JP2015137298A - Thermoplastic resin composition and molded product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thermoplastic resin composition for providing a molded product which reduces squeak noise (friction noise) occurred when in dynamic contact with other members and is excellent in balance among impact resistance, heat resistance and surface impact resistance.SOLUTION: There is provided a thermoplastic resin composition which comprises: a polycarbonate resin; a rubbery polymer reinforced resin having a polymer part composed of an ethylene-α-olefin based rubber and a vinyl-based copolymer part containing a structural unit derived from a vinyl cyanide compound and an aromatic vinyl compound; and a rubbery polymer reinforced resin having a polymer part composed of a diene rubber, an acrylic rubber and a silicone rubber and a vinyl-based copolymer part containing a structural unit derived from a vinyl cyanide compound and an aromatic vinyl compound and has a melting point (JIS K 7121) in the range of 0°C to 100°C, where both of the two types of rubbery polymer reinforced resins are composed of at least three types of rubbery polymer reinforced resins having different contents of structural units derived from a vinyl cyanide compound.

Description

  The present invention provides a molded article that is excellent in impact resistance, heat resistance, and surface impact resistance, and that has reduced squeaking noise generated when it is dynamically contacted with a member made of the same or another material. The present invention relates to a thermoplastic resin composition.

  Polycarbonate resins are excellent in transparency, heat resistance and mechanical properties, and are used in vehicles, OA (office automation) devices, home appliances, electrical / electronic devices, building materials and the like. And in order to improve the fluidity | liquidity etc. when a polycarbonate resin is used independently, many polymer alloys with other thermoplastic resins are developed. Among them, for example, Patent Documents 1 to 4 disclose polymer alloys with rubbery polymer reinforced resins represented by ABS resins having excellent fluidity (molding processability), and improved impact resistance and the like. Therefore, it is expected to be used for vehicles, OA equipment, electrical / electronic equipment, and the like.

  By the way, among the thermoplastic resin parts (referred to as “parts made of the thermoplastic resin composition X”) used in the above fields, thermoplastic resins made of the same or different material as the thermoplastic resin composition X are used. Some of them are used in combination with other parts such as parts made of cured resin, parts made of cured resin, or parts made of an inorganic material made of metal or an inorganic compound. For example, a thermoplastic resin part and other parts are placed in contact with each other, or these parts are placed at a predetermined interval. In recent years, in particular, thermoplastic resin parts are adjacent to each other (both are in contact with each other, or both are in contact with each other, or both are disposed at a predetermined interval). In such a case, it is known that one or both of them are moved or deformed by vibration, rotation, torsion, sliding, impact, or the like and dynamically contacted to generate a squeaking sound (friction sound). For example, an air conditioner or audio casing component disposed in an automobile and a fitting component disposed on the periphery or inside thereof rub against each other due to vibrations or the like, thereby generating an unpleasant sound. This squeaking sound is a sound caused by a stick-slip phenomenon that occurs when two objects rub against each other, and is said to be different from the sliding property between the objects.

  For example, Patent Document 5 discloses an ethylene / α-olefin rubbery polymer having a melting point of 0 ° C. or more as a resin part (automobile interior part, office equipment, house interior part, etc.) to which squeak noise is taken. Content of an ethylene / α-olefin rubber polymer comprising a thermoplastic resin composition containing a rubber reinforced vinyl resin obtained by polymerizing a vinyl monomer in the presence of a polycarbonate resin and a polycarbonate resin However, the contact component which is 5-30 mass% with respect to 100 mass% of the thermoplastic resin composition is disclosed.

  In addition, as a resin member disposed in the vehicle, a member made of a material that is less likely to generate pointed fragments due to breakage is used from the viewpoint of safety in the event of a collision or contact. As an evaluation of various performances for such materials, not only the evaluation of “impact resistance” by Izod impact strength, Charpy impact strength, etc., but also “surface impact resistance” by drop weight impact strength, etc. Evaluation of practical impact strength has attracted attention. In particular, since the vehicle is used in a wide temperature range from a temperate region to a cold region, a material that is not brittle fractured at a low temperature but a material that is susceptible to ductile fracture is desired. ing.

  The “brittle fracture” means, for example, that after the falling weight test, the material is broken by the weight and the fragments are scattered. In addition, “ductile fracture” means a fracture mode in which fragments are not scattered by a weight, although accompanied by significant elongation of the material and deformation due to drawing.

JP 2000-26713 A JP 2000-204234 A JP 2001-288354 A JP 2006-83240 A JP 2012-46669 A

  The present invention includes a polycarbonate resin and a rubber reinforced resin, and gives a molded product that is easily subjected to ductile fracture in which a brittle fracture is suppressed in a drop weight impact test at a low temperature of 0 ° C. or lower, for example, −30 ° C. Provided is a thermoplastic resin composition that provides a molded article that has excellent heat resistance and surface impact resistance, and has reduced squeaking noise (friction noise) generated when it is dynamically contacted with a member made of the same or another material. For the purpose.

The present invention is as follows.
1. [A] a polymer part derived from at least one rubber polymer selected from polycarbonate resin, [B] diene rubber polymer, acrylic rubber polymer and silicone rubber polymer, and cyanide A rubbery polymer reinforced vinyl resin comprising a structural unit (mx) derived from a vinyl compound and a vinyl copolymer part containing a structural unit (my) derived from an aromatic vinyl compound, and [C] A vinyl-based copolymer comprising a polymer part derived from an ethylene / α-olefin rubbery polymer, a structural unit (nx) derived from a vinyl cyanide compound, and a structural unit (ny) derived from an aromatic vinyl compound A thermoplastic resin composition comprising an ethylene / α-olefin rubbery polymer reinforced vinyl resin comprising a polymer part, wherein the rubbery polymer reinforced vinyl resin [B] is (B-1) a rubbery polymer reinforced vinyl resin comprising a vinyl copolymer part in which the content of the structural unit (mx) is 5% by mass or more and s ₁ % by mass or less, and (B-2) A rubbery polymer reinforced vinyl resin comprising a vinyl copolymer part in which the content of the structural unit (mx) exceeds s ₁ % by mass and is s ₂ % by mass or less; and (B-3) the structural unit. It consists of a rubbery polymer reinforced vinyl resin having a vinyl copolymer part whose content of (mx) exceeds s ₂ % by mass and is 60% by mass or less, and (s ₂ −s ₁ ) ≧ 3 (mass%), and the content ratios of the resins (B-1), (B-2), and (B-3) are 1 to 95, respectively, when the total of these is 100 mass%. It is a mixed resin having a mass%, 1 to 98 mass% and 0.1 to 90 mass%. The vinyl rubber polymer reinforced vinyl resin [C] includes (C-1) a vinyl copolymer portion in which the content of the structural unit (nx) is 5 mass% or more and t ₁ mass% or less. ethylene · alpha-olefin rubbery polymer-reinforced vinyl-based resin, (C-2) a vinyl copolymer content is t ₂ wt% or less than ₁ wt% t of the structural units (nx) ethylene · alpha-olefin rubbery polymer-reinforced vinyl-based resin with a part, (C-3) the structural units (nx) vinyl copolymers content is 60 wt% or less than ₂ mass% t of An ethylene / α-olefin rubbery polymer reinforced vinyl resin having a polymer portion, and (t ₂ -t ₁ ) ≧ 3 (% by mass), wherein the resin (C-1), The content ratio of (C-2) and (C-3) is 100% by mass of these totals. In this case, the mixed resin is 1 to 95% by mass, 1 to 98% by mass, and 0.1 to 90% by mass, respectively, and the melting point of the thermoplastic resin composition (JIS K 7121-1987) is 0 ° C. A thermoplastic resin composition having a temperature range of -100 ° C.
2. The thermoplastic resin according to 1 above, wherein s ₁ is 10 to 30% by mass, s ₂ is 15 to 45% by mass, t ₁ is 10 to 30% by mass, and t ₂ is 15 to 45% by mass. Resin composition.
3. The content ratio of the polycarbonate resin [A], the rubber polymer reinforced vinyl resin [B], and the ethylene / α-olefin rubber polymer reinforced vinyl resin [C] is 100% of the total. 3. The thermoplastic resin composition according to 1 or 2 above, which is 5 to 99% by mass, 0.5 to 70% by mass, and 0.5 to 70% by mass, respectively.
4). 4. The thermoplastic resin composition according to any one of 1 to 3, wherein the ethylene / α-olefin-based rubbery polymer has a melting point (JIS K 7121-1987) in the range of 0 ° C. to 100 ° C.
5. In the presence of at least one rubber polymer selected from diene rubber polymers, acrylic rubber polymers, and silicone rubber polymers, the rubber polymer reinforced vinyl resin [B] is cyanide. When the vinyl monomer containing a vinyl halide compound and an aromatic vinyl compound is graft-polymerized, the above-mentioned vinyl cyanide compound and the above-mentioned aromatic vinyl compound are used in a mass ratio of 5-25: 95-75 to 27-60: 73 to 40, or 27 to 60: 73 to 40 and 5 to 25: 95 to 75. Any one of the above 1 to 4 which is a resin obtained by graft polymerization while changing the charged amount. The thermoplastic resin composition according to Item.
6). The vinyl monomer containing the ethylene / α-olefin rubbery polymer reinforced vinyl resin [C] containing a vinyl cyanide compound and an aromatic vinyl compound in the presence of the ethylene / α-olefin rubbery polymer. In the graft polymerization, the vinyl cyanide compound and the aromatic vinyl compound are mixed in a mass ratio from 5 to 25:95 to 75 to 27 to 60:73 to 40, or from 27 to 60:73 to 40. The thermoplastic resin composition according to any one of 1 to 5 above, which is a resin obtained by graft polymerization while changing the charged amount to 5 to 25:95 to 75.
7). A polymer portion derived from at least one rubber polymer selected from a diene rubber polymer, an acrylic rubber polymer, and a silicone rubber polymer; and the ethylene / α-olefin rubber heavy The content ratio with the polymer part derived from the coalescence is 10 to 90% by mass and 10 to 90% by mass, respectively, when the total of these is 100% by mass. The thermoplastic resin composition as described.
8). Furthermore, [D] a copolymer containing a structural unit (dx) derived from a vinyl cyanide compound and a structural unit (dy) derived from an aromatic vinyl compound (provided that the above components [B] and [C] The copolymer [D] includes (D-1) a copolymer containing the structural unit (dx) in an amount of 5% by mass or more and ₁ % by mass or less, and (D-2) the above. A copolymer containing the structural unit (dx) in an amount exceeding ₁ mass% r and ₂ mass% or less; and (D-3) the structural unit (dx) in an amount exceeding ₂ mass% and 60 mass% or less. And (r ₂ -r ₁ ) ≧ 3 (mass%), wherein the copolymers (D-1), (D-2) and (D-3) When the total content is 100% by mass, these are 1 to 80% by mass, 3 to 80% by mass, and 1 to 80% by mass, respectively. The thermoplastic resin composition according to any one of the serial 1 to 7.
9. r ₂ is the thermoplastic resin composition according to the above 8, which is a 15 to 45 wt%.
10. 10. The thermoplastic resin composition according to any one of 1 to 9 above, which is used for forming a molded product that reduces the squeaking sound that is generated when it dynamically contacts another member.
11. A molded article comprising the thermoplastic resin composition according to any one of 1 to 10 above.
12 12. Said 11 which is at least one of the member used for insertion in this hole or this recessed part in the other member which has a hole or a recessed part, and the member which has a hole or a recessed part. Molding.
13. 13. The molded article according to 11 or 12 used as a vehicle interior part.

In this specification, “(meth) acryl” refers to acryl and methacryl, “(meth) acrylate” refers to acrylate and methacrylate, “(meth) acryloyl group” refers to acryloyl group or methacryloyl group, “Polymer” means homopolymers and copolymers.
The melting point (hereinafter referred to as “Tm”) according to JIS K 7121-1987 was obtained by measuring endothermic changes at a constant temperature increase rate of 20 ° C. per minute using DSC (differential scanning calorimeter). It is a value obtained by reading the peak temperature of the obtained endothermic pattern.
Furthermore, the “composite” is composed of at least two members, and at least one of them is a molded product composed of a thermoplastic resin composition. It is done.
(A) A mode in which both are in direct contact with each other if necessary (either one or both may be capable of free movement such as sliding)
(B) A mode in which an adhesive layer is provided at a part of the interface between the two and both are in direct contact with each other at the other interface (c) both are integrated using a connector if necessary. A mode in which either one or both of them are moved or deformed by a force from another place and can be contacted dynamically by a force from other places.

  According to the thermoplastic resin composition of the present invention, the balance of impact resistance, heat resistance and surface impact resistance is excellent, and brittle fracture is suppressed in a drop weight impact test at a low temperature of 0 ° C. or lower, for example, −30 ° C. Thus, a molded product that is easily ductile broken is given, and can be suitably used in the fields of vehicles, OA (office automation) equipment, home appliances, electrical / electronic equipment, building materials, and the like. In such a field, the molded article containing the thermoplastic resin composition of the present invention is particularly adjacent to a member made of the same or other material (both are in contact with each other or have an adhesive portion in part). In the case of forming a structure in which both are in contact with each other, or both are arranged at a predetermined interval), one or both of them are moved or deformed by vibration, rotation, torsion, sliding, impact, etc. Even if contact is made (surface contact, line contact or point contact), the squeaking noise (friction) generated is reduced or the generation of squeaking noise is suppressed. In particular, the molded product of the present invention is at least one of a member used for insertion into the hole or the recess in another member having a hole or a recess and a member having the hole or the recess. Is preferable and suitable as a vehicle interior part.

It is a schematic sectional drawing which shows an example of the composite_body | complex which combines two members. It is a schematic sectional drawing which shows the other examples of the composite_body | complex which combines two members. It is a schematic sectional drawing which shows the other examples of the composite_body | complex which combines two members. It is a schematic sectional drawing which shows the other examples of the composite_body | complex which combines two members. It is a schematic sectional drawing which shows the other examples of the composite_body | complex which combines two members. It is a schematic sectional drawing which shows the other examples of the composite_body | complex which combines two members. It is a schematic perspective view which shows one member 12 used for formation of the composite_body | complex of the structure of FIG. It is the schematic which shows the other example of the composite_body | complex which combines two members, (A) is a top view, (B) is a side view, (C) is a YY 'sectional view taken on the line in (A). is there. It is the schematic which shows the other example of the composite_body | complex which combines two members, (A) is a top view, (B) is a side view, (C) is a YY 'sectional view taken on the line in (A). is there. It is the schematic which shows the other example of the composite_body | complex which combines two members, (A) is a top view, (B) is a side view, (C) is a YY 'sectional view taken on the line in (A). is there. It is a schematic perspective view which shows one member 18 used for formation of the composite_body | complex of the structure of FIG. It is the schematic which shows the other example of the composite_body | complex which combines two members, (A) is a top view, (B) is a side view, (C) is a YY 'sectional view taken on the line in (A). is there.

As described above, the thermoplastic resin composition of the present invention comprises [A] polycarbonate resin (hereinafter also referred to as “component [A]”), [B] diene rubber polymer, acrylic rubber polymer, and A polymer part derived from at least one rubbery polymer selected from silicone rubbery polymers, a structural unit derived from a vinyl cyanide compound (mx), and a structural unit derived from an aromatic vinyl compound ( my) -containing vinyl-based copolymer part (hereinafter also referred to as “vinyl-based copolymer part (BX)”), and three specific rubbery polymer-reinforced vinyl resins (hereinafter referred to as “component [ B] ”), and [C] a polymer part derived from an ethylene / α-olefin rubber polymer (hereinafter referred to as“ ethylene / α-olefin rubber polymer part ”), and cyanation Derived from vinyl compounds And a vinyl copolymer part (hereinafter also referred to as “vinyl copolymer part (CX)”) including a structural unit (nx) and a structural unit (ny) derived from an aromatic vinyl compound. It is a composition containing a specific three kinds of ethylene / α-olefin rubbery polymer reinforced vinyl resin (hereinafter also referred to as “component [C]”). The thermoplastic resin composition of the present invention may contain other thermoplastic resins and additives (both described later).
The molded article containing the thermoplastic resin composition of the present invention has, for example, one member (10, 12, 14, 16 as shown in FIGS. 1 to 6, 8, 9, 10, and 12). Or 18) and other members (20, 22, 24, 26, or 28), which are suitably used as at least one of the molded articles constituting the composite. In particular, when the member containing the thermoplastic resin composition of the present invention and other members are dynamically contacted, or when the members containing the thermoplastic resin composition of the present invention are dynamically contacted, It can be set as the composite_body | complex with which generation | occurrence | production of a squeaking sound (rubbing sound) is suppressed.

  The component [A] is not particularly limited as long as it is a polycarbonate resin having a carbonate bond in the main chain, and may be an aromatic polycarbonate or an aliphatic polycarbonate. Moreover, you may use combining these. In the present invention, an aromatic polycarbonate is preferable from the viewpoint of impact resistance, heat resistance, and the like. In addition, this component [A] may have a terminal modified with an R—CO— group or an R′—O—CO— group (R and R ′ each represents an organic group). Good.

  Examples of the aromatic polycarbonate include those obtained by melting a transesterification (transesterification reaction) of an aromatic dihydroxy compound and a carbonic acid diester, those obtained by an interfacial polycondensation method using phosgene, and pyridine and phosgene. What was obtained by the pyridine method using a reaction product etc. can be used.

  The aromatic dihydroxy compound may be any compound having two hydroxyl groups in the molecule, such as dihydroxybenzene such as hydroquinone and resorcinol, 4,4′-biphenol, 2,2-bis (4-hydroxyphenyl) propane ( Hereinafter, referred to as “bisphenol A”), 2,2-bis (3,5-dibromo-4-hydroxyphenyl) propane, 2,2-bis (4-hydroxyphenyl-3-methylphenyl) propane, 2,2- Bis (3-tert-butyl-4-hydroxyphenyl) propane, 2,2-bis (3,5-dimethyl-4-hydroxyphenyl) propane, bis (4-hydroxyphenyl) methane, 1,1-bis (p -Hydroxyphenyl) ethane, 2,2-bis (p-hydroxyphenyl) butane, 2,2-bis (p Hydroxyphenyl) pentane, 1,1-bis (p-hydroxyphenyl) cyclohexane, 1,1-bis (p-hydroxyphenyl) -4-isopropylcyclohexane, 1,1-bis (p-hydroxyphenyl) -3,3 , 5-trimethylcyclohexane, 1,1-bis (p-hydroxyphenyl) -1-phenylethane, 9,9-bis (p-hydroxyphenyl) fluorene, 9,9-bis (p-hydroxy-3-methylphenyl) ) Fluorene, 4,4 '-(p-phenylenediisopropylidene) diphenol, 4,4'-(m-phenylenediisopropylidene) diphenol, bis (p-hydroxyphenyl) oxide, bis (p-hydroxyphenyl) ) Ketone, bis (p-hydroxyphenyl) ether, bis (p-hydroxy) Enyl) ester, bis (p-hydroxyphenyl) sulfide, bis (p-hydroxy-3-methylphenyl) sulfide, bis (p-hydroxyphenyl) sulfone, bis (3,5-dibromo-4-hydroxyphenyl) sulfone, Examples thereof include bis (p-hydroxyphenyl) sulfoxide. These can be used alone or in combination of two or more.

  Of the aromatic hydroxy compounds, compounds having a hydrocarbon group between two benzene rings are preferred. In this compound, the hydrocarbon group may be a halogen-substituted hydrocarbon group. Further, the benzene ring may be one in which one or two or more hydrogen atoms bonded to the carbon atoms constituting the benzene ring are substituted with halogen atoms. Therefore, the above compounds include bisphenol A, 2,2-bis (3,5-dibromo-4-hydroxyphenyl) propane, 2,2-bis (4-hydroxyphenyl-3-methylphenyl) propane, 2,2 -Bis (3-tert-butyl-4-hydroxyphenyl) propane, 2,2-bis (3,5-dimethyl-4-hydroxyphenyl) propane, bis (4-hydroxyphenyl) methane, 1,1-bis ( p-hydroxyphenyl) ethane, 2,2-bis (p-hydroxyphenyl) butane and the like. Of these, bisphenol A is particularly preferred.

  Examples of the carbonic acid diester used for obtaining the aromatic polycarbonate by transesterification include dimethyl carbonate, diethyl carbonate, di-tert-butyl carbonate, diphenyl carbonate, and ditolyl carbonate. These can be used alone or in combination of two or more.

The average molecular weight and molecular weight distribution of the component [A] are not particularly limited as long as the composition has moldability. The polystyrene equivalent weight average molecular weight (Mw) measured by gel permeation chromatography (GPC) is preferably 15,000 to 40,000, more preferably 16,000 to 30,000, and even more preferably 17,000. ~ 28,000. As the weight average molecular weight increases, the notched impact strength increases. On the other hand, the fluidity is not sufficient and the moldability tends to be inferior.
Further, the molecular weight of the component [A] is a viscosity average molecular weight (Mv) converted from a solution viscosity measured at 25 ° C. using methylene chloride as a solvent, preferably 10,000 to 50,000, more preferably 15 , 3,000 to 30,000, more preferably 17,500 to 27,000. When the viscosity average molecular weight is 10,000 to 50,000, the moldability and mechanical strength are excellent.
The MFR (temperature 240 ° C., load 10 kg) of the component [A] is preferably 1 to 70 g / 10 minutes, more preferably 2.5 to 50 g / 10 minutes, and further preferably 4 to 30 g / 10 minutes. is there.

  The thermoplastic resin composition of the present invention may contain only one kind of the component [A], or may contain two or more kinds.

The component [B] includes a specific three types of rubber polymer reinforced vinyl resins, that is, a vinyl copolymer portion in which the content of the structural unit (mx) is 5% by mass or more and s ₁ % by mass or less. Rubber polymer comprising a rubber polymer reinforced vinyl resin (B-1) and a vinyl copolymer part having a structural unit (mx) content of more than s ₁ % by mass and s ₂ % by mass or less Reinforced vinyl resin (B-2) and a rubbery polymer reinforced vinyl resin having a vinyl copolymer part in which the content of the structural unit (mx) exceeds s ₂ mass% and is 60 mass% or less ( B-3), and all three types of resins are polymer parts derived from diene rubber polymers (hereinafter referred to as “diene rubber polymer parts”), acrylic rubber heavy Polymer part derived from coalescence (hereinafter referred to as “acrylic rubbery polymer part”) Or a polymer part derived from a silicone rubber polymer (hereinafter referred to as “silicone rubber polymer part”), a structural unit (mx) derived from a vinyl cyanide compound, and an aromatic vinyl compound. A rubbery polymer reinforced vinyl resin comprising a vinyl copolymer part containing a structural unit derived from (my), and the rubber polymer part and the vinyl copolymer part are chemically bonded to each other. It is a composite. The rubbery polymer reinforced vinyl resins (B-1), (B-2) and (B-3) are resins (diene graft resins, acrylics) having different structural unit (mx) contents. A graft resin or a silicone-based graft resin), which is a resin in which the content of the structural unit (mx) increases in order.
The component [B] according to the present invention is a kind selected from diene rubbery polymer reinforced vinyl resin, acrylic rubbery polymer reinforced vinyl resin and silicone rubbery polymer reinforced vinyl resin. May be used alone, or two or three of them may be used in combination.

  Content ratio (average value) of diene rubber polymer part, acrylic rubber polymer part or silicone rubber polymer part and vinyl copolymer part (BX) constituting component [B] ) Is not particularly limited, but from the viewpoint of impact resistance and appearance of the molded product, when the total of both is 100% by mass, preferably 10 to 90% by mass and 10 to 90% by mass, more preferably It is 20-80 mass% and 20-80 mass%, More preferably, it is 35-75 mass% and 25-65 mass%.

The diene rubber polymer, acrylic rubber polymer and silicone rubber polymer are not particularly limited as long as they are rubbery at 25 ° C.
Both the diene rubber polymer and the acrylic rubber polymer may be a homopolymer or a copolymer. Each rubber polymer may be a crosslinked polymer or a non-crosslinked polymer. Furthermore, each rubber polymer can be used alone or in combination of two or more.

  Examples of the diene rubber polymer include homopolymers such as polybutadiene, polyisoprene, and polychloroprene; styrene / butadiene copolymer, styrene / butadiene / styrene copolymer, acrylonitrile / butadiene copolymer, acrylonitrile / styrene / Styrene / butadiene copolymer rubber such as butadiene copolymer; styrene / isoprene copolymer, styrene / isoprene / styrene copolymer, styrene / isoprene copolymer rubber such as acrylonitrile / styrene / isoprene copolymer, etc. Is mentioned. These copolymers may be block copolymers or random copolymers. These copolymers may be hydrogenated. However, the hydrogenation rate is usually less than 50%, preferably less than 20%. In the present invention, the diene rubbery polymer is preferably a (co) polymer containing a structural unit derived from 1,3-butadiene or isoprene or a hydrogenated polymer thereof.

  The acrylic rubbery polymer is a polymer containing a structural unit derived from a (meth) acrylic acid alkyl ester compound, and is preferably a copolymer. In this case, it may be a copolymer containing two or more structural units derived from a (meth) acrylic acid alkyl ester compound, a structural unit derived from a (meth) acrylic acid alkyl ester compound, and another vinyl. A copolymer containing a structural unit derived from a system compound may be used.

  Examples of the (meth) acrylic acid alkyl ester compound include methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, and n-butyl (meth) acrylate. , Isobutyl (meth) acrylate, tert-butyl (meth) acrylate, sec-butyl (meth) acrylate, pentyl (meth) acrylate, hexyl (meth) acrylate, heptyl (meth) acrylate, (meth) Examples include 2-ethylhexyl acrylate, octyl (meth) acrylate, nonyl (meth) acrylate, decyl (meth) acrylate, dodecyl (meth) acrylate, cyclohexyl (meth) acrylate, and the like. These compounds can be used alone or in combination of two or more. Of these, compounds having 1 to 14 carbon atoms in the alkyl group in the ester moiety are preferred, and n-butyl acrylate and 2-ethylhexyl acrylate are particularly preferred.

  The other vinyl compound is a compound having one carbon-carbon double bond or a compound having two or more carbon-carbon double bonds, excluding the (meth) acrylic acid alkyl ester compound. Can do.

  Examples of the compound having one carbon-carbon double bond include aromatic vinyl compounds, vinyl cyanide compounds, amide group-containing unsaturated compounds, alkyl vinyl ethers, and vinylidene chloride. In addition, these compounds can be used individually or in combination of 2 or more.

  In addition, as a compound having two or more carbon-carbon double bonds, a bifunctional aromatic vinyl compound, a bifunctional (meth) acrylic ester, a trifunctional (meth) acrylic ester, a tetrafunctional (meta ) Acrylic acid ester, pentafunctional (meth) acrylic acid ester, hexafunctional (meth) acrylic acid ester, polyhydric alcohol (meth) acrylic acid ester, and the like. In addition, these compounds can be used individually or in combination of 2 or more.

Examples of the bifunctional aromatic vinyl compound include divinylbenzene and divinyltoluene.
Examples of the bifunctional (meth) acrylic acid ester include 1,6-hexanediol diacrylate, ethylene glycol dimethacrylate, neopentyl glycol diacrylate, allyl (meth) acrylate, neopentyl glycol dimethacrylate, and triethylene glycol diacrylate. Examples include acrylate and triethylene glycol dimethacrylate.
Examples of the trifunctional (meth) acrylic acid ester include trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, pentaerythritol triacrylate, pentaerythritol trimethacrylate, and the like.
Examples of the tetrafunctional (meth) acrylic acid ester include pentaerythritol tetraacrylate and pentaerythritol tetramethacrylate.
Examples of the pentafunctional (meth) acrylic acid ester include pentaerythritol pentaacrylate and pentaerythritol pentamethacrylate.
Examples of the hexafunctional (meth) acrylic acid ester include dipentaerythritol hexaacrylate and dipentaerythritol hexamethacrylate.
Examples of the (meth) acrylic acid ester of the polyhydric alcohol include (poly) ethylene glycol dimethacrylate.
In addition, allyl methacrylate, diallyl phthalate, diallyl malate, diallyl fumarate, triallyl cyanurate, triallyl isocyanurate, bis (acryloyloxyethyl) ether of bisphenol A, and the like can be used.
Of these, allyl methacrylate and triallyl cyanurate are preferred.

  As the acrylic rubbery polymer, a copolymer containing a structural unit derived from a (meth) acrylic acid alkyl ester compound is preferable as described above. In this case, when the total of all the structural units constituting the copolymer is 100% by mass, the content of the structural unit derived from the (meth) acrylic acid alkyl ester compound is preferably 60 to 99.99% by mass, More preferably, it is 75-99.9 mass%, More preferably, it is 90-99.5 mass%.

The silicone rubber polymer is preferably a polyorganosiloxane polymer having a polymerizable unsaturated bond (carbon-carbon double bond), and has a structural unit represented by the following general formula (1). Particularly preferred is a modified polyorganosiloxane rubber obtained by cocondensation of at least one organosiloxane (i) having a graft crossing agent (ii).
[R ¹ _n SiO] _{(4-n) / 2} (1)
(In the formula, R ¹ represents a substituted or unsubstituted monovalent hydrocarbon group, and n represents an integer of 0 to 3. When there are a plurality of R ^{1 s} , they may be the same as or different from each other.)

R ¹ in the general formula (1), that is, the monovalent hydrocarbon group includes an alkyl group such as a methyl group, an ethyl group, a propyl group, and a butyl group; an aryl group such as a phenyl group and a tolyl group; a vinyl group; An alkenyl group such as an allyl group; and a group in which a part of hydrogen atoms bonded to carbon atoms in these hydrocarbon groups is substituted with a halogen atom, a cyano group, or the like; and at least one hydrogen atom of an alkyl group is a mercapto group And a group substituted with.

The organosiloxane (i) is linear, branched or cyclic and preferably has a cyclic structure. Specifically, hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, trimethyltriphenylcyclotrisiloxane, tetramethyltetraphenylcyclotetrasiloxane, octaphenylcyclotetrasiloxane, etc. Is mentioned. These can be used alone or in combination of two or more.
In addition, the said organosiloxane (i) was condensed beforehand using 1 or more types of the compound represented by the said General formula (1), for example, the weight average molecular weight (Mw) is about 500-10,000. Polyorganosiloxane may be used. The polyorganosiloxane may be a polyorganosiloxane whose molecular chain end is sealed with a functional group such as a hydroxyl group, an alkoxy group, a trimethylsilyl group, or a methyldiphenylsilyl group.

Examples of the graft crossing agent (ii) include vinylmethyldimethoxysilane, p-vinylphenylmethyldimethoxysilane, 1- (p-vinylphenyl) methyldimethylisopropoxysilane, 2- (p-vinylphenyl) ethylenemethyldimethoxysilane, 3- (p-vinylphenoxy) propylmethyldiethoxysilane, 1- (o-vinylphenyl) -1,1,2-trimethyl-2,2-dimethoxydisilane, allylmethyldimethoxysilane, γ-methacryloxypropylmethyldimethoxy A compound having a carbon-carbon unsaturated bond and an alkoxysilyl group, such as silane; a silane compound having a mercapto group (thiol group), such as γ-mercaptopropylmethylmethyldimethoxysilane; a silane compound having an amino group; tetravinyl Tetramethyl And cyclosiloxane.
When the organosiloxane (i) contains a polymerizable unsaturated bond, the graft crossing agent (ii) to be used may or may not have a polymerizable unsaturated bond.

In the case of producing the modified polyorganosiloxane rubber, the organosiloxane (i) and the graft crossing agent (ii) are subjected to shear mixing in the presence of an emulsifier such as alkylbenzene sulfonic acid using a homomixer or the like to condense. It can be a method or the like. The upper limit of the amount of the graft crossing agent (ii) used is preferably 50% by mass, more preferably 10% by mass, and still more preferably 5% when the total amount with the organosiloxane (i) is 100% by mass. % By mass.
In the production of the modified polyorganosiloxane rubber, a crosslinking agent may be added in order to improve impact resistance. Examples of the crosslinking agent include trifunctional crosslinking agents such as methyltrimethoxysilane, phenyltrimethoxysilane, and ethyltriethoxysilane, and tetrafunctional crosslinking agents such as tetraethoxysilane. When a crosslinking agent is used, the upper limit of the amount used is usually 10 parts by mass, preferably 5 parts by mass when the total amount of the organosiloxane (i) and the graft crossing agent (ii) is 100 parts by mass. .
The weight average molecular weight (Mw) of the modified polyorganosiloxane rubber is preferably 30,000 to 1,000,000, more preferably 50,000 to 300,000. Within this range, the thermoplastic resin composition of the present invention has an excellent balance between impact resistance and fluidity.

  Next, the vinyl copolymer part (BX) is a resin part including a structural unit (mx) derived from a vinyl cyanide compound and a structural unit (my) derived from an aromatic vinyl compound.

  Examples of the vinyl cyanide compound include acrylonitrile, methacrylonitrile, ethacrylonitrile, α-ethylacrylonitrile, α-isopropylacrylonitrile and the like. These compounds can be used alone or in combination of two or more. Of these, acrylonitrile is preferred.

  The aromatic vinyl compound is not particularly limited as long as it is a compound having at least one vinyl bond and at least one aromatic ring. However, it shall not have a substituent such as a functional group. Examples thereof include styrene, α-methylstyrene, o-methylstyrene, p-methylstyrene, β-methylstyrene, ethylstyrene, p-tert-butylstyrene, vinyltoluene, vinylxylene, vinylnaphthalene and the like. These compounds can be used alone or in combination of two or more. Of these, styrene and α-methylstyrene are preferable, and styrene is particularly preferable.

  The ratio of the total amount of the structural units (mx) and (my) constituting the vinyl copolymer part (BX) is not particularly limited, but the lower limit is from the viewpoints of rigidity and chemical resistance. Preferably it is 80 mass% with respect to the whole copolymer part (BX), More preferably, it is 90 mass%, More preferably, it is 100 mass%.

  In addition to the structural units (mx) and (my), the vinyl-based copolymer part (BX) is not limited to the structural unit (mx) and (my). May also be included. Monomers that give the structural unit (mz) include (meth) acrylic acid ester compounds, maleimide compounds, unsaturated acid anhydrides, carboxyl group-containing unsaturated compounds, amino group-containing unsaturated compounds, amide group-containing unsaturated compounds. Examples include saturated compounds, hydroxyl group-containing unsaturated compounds (except for (meth) acrylic acid ester compounds in which the ester moiety contains a hydroxyalkyl group), epoxy group-containing unsaturated compounds, oxazoline group-containing unsaturated compounds, and the like. These can be used individually by 1 type or in combination of 2 or more types.

The (meth) acrylic acid ester compound is not particularly limited as long as it is a compound having a (meth) acryloyl group. However, carboxylic acid is not included. Examples thereof include compounds in which the ester moiety contains a hydrocarbon group, and compounds in which the ester moiety contains a hydroxyalkyl group. These compounds can be used alone or in combination of two or more.
Examples of the (meth) acrylic acid ester compound in which the ester portion contains a hydrocarbon group include methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, (meth ) N-butyl acrylate, isobutyl (meth) acrylate, sec-butyl (meth) acrylate, tert-butyl (meth) acrylate, n-hexyl (meth) acrylate, n-octyl (meth) acrylate, Examples include 2-ethylhexyl (meth) acrylate, cyclohexyl (meth) acrylate, phenyl (meth) acrylate, benzyl (meth) acrylate, and the like.
Moreover, as a compound in which an ester part contains a hydroxyalkyl group, (meth) acrylic acid hydroxymethyl, (meth) acrylic acid 2-hydroxyethyl, (meth) acrylic acid 2-hydroxypropyl, (meth) acrylic acid 3-hydroxy Propyl, 2-hydroxybutyl (meth) acrylate, 3-hydroxybutyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) acrylate, etc. It is done.

  Examples of the maleimide compound include maleimide, N-methylmaleimide, N-isopropylmaleimide, N-butylmaleimide, N-dodecylmaleimide, N-phenylmaleimide, N- (2-methylphenyl) maleimide, N- (4-methyl). Phenyl) maleimide, N- (2,6-dimethylphenyl) maleimide, N- (2,6-diethylphenyl) maleimide, N- (2-methoxyphenyl) maleimide, N-benzylmaleimide, N- (4-hydroxyphenyl) ) Maleimide, N-naphthylmaleimide, N-cyclohexylmaleimide and the like. Of these, N-phenylmaleimide is preferred. These compounds can be used alone or in combination of two or more. In addition, as another method for introducing a structural unit derived from a maleimide compound into a polymer chain, for example, an unsaturated dicarboxylic anhydride of maleic anhydride is copolymerized and then imidized.

Examples of the unsaturated acid anhydride include maleic anhydride, itaconic anhydride, citraconic anhydride, and the like. These compounds can be used alone or in combination of two or more.
Examples of the carboxyl group-containing unsaturated compound include (meth) acrylic acid, ethacrylic acid, maleic acid, fumaric acid, itaconic acid, crotonic acid, cinnamic acid and the like. These compounds can be used alone or in combination of two or more.

Examples of the amino group-containing unsaturated compound include aminoethyl acrylate, propylaminoethyl acrylate, dimethylaminomethyl acrylate, diethylaminomethyl acrylate, 2-dimethylaminoethyl acrylate, aminoethyl methacrylate, and propylaminoethyl methacrylate. , Dimethylaminomethyl methacrylate, diethylaminomethyl methacrylate, 2-dimethylaminoethyl methacrylate, phenylaminoethyl methacrylate, p-aminostyrene, N-vinyldiethylamine, N-acetylvinylamine, acrylicamine, methacrylamine, N- Examples include methylacrylamine. These compounds can be used alone or in combination of two or more.
Examples of the amide group-containing unsaturated compound include acrylamide, N-methylacrylamide, methacrylamide, N-methylmethacrylamide and the like. These compounds can be used alone or in combination of two or more.

  Examples of the hydroxyl group-containing unsaturated compound include o-hydroxystyrene, m-hydroxystyrene, p-hydroxystyrene, o-hydroxy-α-methylstyrene, m-hydroxy-α-methylstyrene, and p-hydroxy-α-methyl. Styrene, 2-hydroxymethyl-α-methylstyrene, 3-hydroxymethyl-α-methylstyrene, 4-hydroxymethyl-α-methylstyrene, 4-hydroxymethyl-1-vinylnaphthalene, 7-hydroxymethyl-1-vinyl Naphthalene, 8-hydroxymethyl-1-vinylnaphthalene, 4-hydroxymethyl-1-isopropenylnaphthalene, 7-hydroxymethyl-1-isopropenylnaphthalene, 8-hydroxymethyl-1-isopropenylnaphthalene, p-vinylbenzyl alcohol 3 Hydroxy-1-propene, 4-hydroxy-1-butene, cis-4-hydroxy-2-butene, trans-4-hydroxy-2-butene, 3-hydroxy-2-methyl-1-propene, and the like. These compounds can be used alone or in combination of two or more.

Examples of the epoxy group-containing unsaturated compound include glycidyl (meth) acrylate, 3,4-oxycyclohexyl (meth) acrylate, vinyl glycidyl ether, allyl glycidyl ether, and methallyl glycidyl ether. These compounds can be used alone or in combination of two or more.
Examples of the unsaturated compound containing an oxazoline group include vinyl oxazoline, 4-methyl-2-vinyl-2-oxazoline, 5-methyl-2-vinyl-2-oxazoline, 2-vinyl-4,4-dimethyl-2-oxazoline. 2-isopropenyl-2-oxazoline, 4-methyl-2-isopropenyl-2-oxazoline, 5-methyl-2-isopropenyl-2-oxazoline, 2-isopropenyl-4,4-dimethyl-2-oxazoline Etc.

  As the monomer that gives the structural unit (mz), a (meth) acrylic acid ester compound and a maleimide compound are preferable.

  The component [B] is composed of three kinds of rubbery polymer reinforced vinyl resins (B-1), (B-2) and (B-3) each including the structural units (mx) and (my). It is a mixed resin. These rubbery polymer reinforced vinyl resins (B-1), (B-2) and (B-3) contain structural units (mx) and (my), but the component [B] When a structural unit (mz) derived from a vinyl monomer is included, this structural unit (mz) may be included in all rubbery polymer reinforced vinyl resins, either one or It may be included in only two.

In the present invention, preferred examples of the rubbery polymer reinforced vinyl resin (B-1), (B-2) or (B-3) constituting the component [B] are as follows.
(1) Diene rubber polymer part, acrylic rubber polymer part or silicone rubber polymer part, structural unit derived from vinyl cyanide compound (mx) and structural unit derived from aromatic vinyl compound A rubbery polymer reinforced vinyl resin having a vinyl copolymer part (BX) made of (my) (2) a diene rubbery polymer part, an acrylic rubbery polymer part or a silicone rubbery polymer And a vinyl copolymer part (BX) comprising a structural unit (mx) derived from a vinyl cyanide compound, a structural unit (my) derived from an aromatic vinyl compound, and a structural unit derived from a maleimide compound. (3) a diene rubber polymer part, an acrylic rubber polymer part or a silicone rubber polymer part, and a structure derived from a vinyl cyanide compound. Rubber polymer reinforced vinyl having a unit (mx), a structural unit (my) derived from an aromatic vinyl compound, and a vinyl copolymer part (BX) composed of a structural unit derived from a (meth) acrylic ester compound Resin

  The rubbery polymer reinforced vinyl resins (B-1), (B-2) and (B-3) are the same in the above (1) to (3). The resin may be a different resin, that is, a resin containing all of the above (1) to (3). In the rubbery polymer reinforced vinyl resins (B-1), (B-2), and (B-3), the type of the structural unit (mx) may be the same or different. . The type of the structural unit (my) may also be the same or different. The type of the structural unit (mz) may also be the same or different.

The vinyl copolymer constituting the vinyl copolymer part of the rubber polymer reinforced vinyl resin (B-1) includes a structural unit (mx) in an amount of 5 mass% to s ₁ mass%. As described above, it may be a copolymer composed of structural units (mx) and (my), or a copolymer composed of structural units (mx), (my) and (mz). Further, as described above, the vinyl copolymer constituting the vinyl copolymer part may be composed of at least one copolymer including a predetermined amount of the structural unit (mx). For example, when it is composed of two kinds of copolymers and 5 ≦ s ₁₁ <s ₁₂ ≦ s ₁ , a copolymer containing s ₁₁ mass% of structural units (mx) and structural units (mx) And a rubber polymer reinforced vinyl resin including a vinyl copolymer portion made of ₁₂ mass% of s.
s ₁ is preferably 10 to 30% by mass, more preferably 15 to 30% by mass, still more preferably 17 to 28% by mass, and particularly preferably 22 to 28% by mass. When two or more kinds of copolymers having a structural unit (mx) content of 5% by mass or more and s ₁ % by mass or less are contained, “a vinyl copolymer of rubbery polymer reinforced vinyl resin (B-1)” The value shown as “content of structural unit (mx) contained in vinyl copolymer constituting part” is the value of structural unit (mx) contained in each vinyl copolymer constituting vinyl copolymer part. It is an average value calculated from the content.
The vinyl copolymer constituting the vinyl copolymer portion of the rubber polymer reinforced vinyl resin (B-2) has a structural unit (mx) exceeding s ₁ % by mass and s ₂ % by mass or less. A copolymer containing structural units (mx) and (my), and may be a copolymer comprising structural units (mx) and (my) as described above, or a structural unit (mx) , (My) and (mz). Further, as described above, the vinyl copolymer constituting the vinyl copolymer part may be composed of at least one copolymer including a predetermined amount of the structural unit (mx). For example, when it is composed of two kinds of copolymers and s ₁ <s ₂₁ <s ₂₂ ≦ s ₂ , a copolymer containing s ₂₁ mass% of structural units (mx) and structural units (mx ) can be used to s _22% by weight comprising a copolymer and a rubber polymer reinforced vinyl resin containing a vinyl copolymer portion consisting of.
s ₂ is preferably 15 to 45 wt%, more preferably 20 to 42 wt%, more preferably 22 to 40 wt%, even more preferably 25 to 35% by weight, particularly preferably 27 to 33 wt% . When the content of the structural unit (mx) exceeds ₂ % by mass of s ₁ % by mass and s ₂ % by mass or less of the vinyl copolymer, the “rubber polymer reinforced vinyl resin (B-2) The value shown as “content of the structural unit (mx) contained in the copolymer constituting the vinyl copolymer part” is the structural unit contained in each vinyl copolymer constituting the vinyl copolymer part ( mx) is an average value calculated from the content.
In the present invention, since the effect of balance between impact resistance and appearance of the molded product becomes remarkable, the relationship between s ₁ and s ₂ is (s ₂ −s ₁ ) ≧ 3 (mass%). Preferably, (s ₂ −s ₁ ) ≧ 4 (mass%), more preferably (s ₂ −s ₁ ) ≧ 4.5 (mass%). However, usually (s ₂ −s ₁ ) ≦ 10 (mass%), preferably (s ₂ −s ₁ ) ≦ 9 (mass%), more preferably (s ₂ −s ₁ ) ≦ 7 (mass%). It is. When (s ₂ −s ₁ ) <3 (mass%), the effect of the present invention cannot be sufficiently obtained.
The vinyl copolymer constituting the vinyl copolymer portion of the rubber polymer reinforced vinyl resin (B-3) has a structural unit (mx) of more than ₂ mass% and not more than 60 mass%. , Preferably a copolymer containing more than ₂ % by mass and not more than 60% by mass. As described above, the copolymer may be a copolymer comprising the structural units (mx) and (my), and the structural unit ( A copolymer composed of (mx), (my) and (mz) may be used. Further, as described above, the vinyl copolymer constituting the vinyl copolymer part may be composed of at least one copolymer including a predetermined amount of the structural unit (mx). For example, when it is composed of two kinds of copolymers and s ₂ <s ₃₁ <s ₃₂ ≦ 60, a copolymer containing s ₃₁ % by mass of a structural unit (mx) and a structural unit (mx) And a rubbery polymer reinforced vinyl resin containing a vinyl copolymer part composed of ₃₂ % by mass of s.
When two or more vinyl copolymers having a structural unit (mx) content of more than ₂ % by mass and not more than 60% by mass are contained, “vinyl of rubbery polymer reinforced vinyl resin (B-3)” The value shown as “content of the structural unit (mx) contained in the copolymer constituting the copolymer-based copolymer part” is the structural unit contained in each vinyl-based copolymer constituting the vinyl-based copolymer part (mx ) Is an average value calculated from the content.

The content ratio of the rubbery polymer reinforced vinyl resin (B-1), (B-2) and (B-3) constituting the component [B] is from the viewpoint of impact resistance and appearance of the molded product. When the total of these is 100% by mass, they are 1 to 95% by mass, 1 to 98% by mass and 0.1 to 90% by mass, respectively, preferably 3 to 90% by mass and 5 to 90% by mass. And 2 to 70% by mass, more preferably 7 to 65% by mass, 20 to 80% by mass and 3 to 55% by mass, still more preferably 10 to 50% by mass, 30 to 70% by mass and 4 to 40% by mass. .
In addition, the molding processability (fluidity) and impact resistance of the composition are remarkable when s ₁ is 15 to 30% by mass and s ₂ is 22 to 40% by mass. When the content ratios of the reinforced vinyl resins (B-1), (B-2) and (B-3) are 100% by mass of these, preferably 3 to 90% by mass, 5% to 5%, respectively. 90% by weight and 2 to 70% by weight, more preferably 7 to 65% by weight, 20 to 80% by weight and 3 to 55% by weight, still more preferably 10 to 50% by weight, 30 to 70% by weight and 4 to 40% by weight. % Combination.

  Further, the structural unit (mx) with respect to the total amount of the vinyl copolymer part (BX) contained in the rubber polymer reinforced vinyl resin (B-1), (B-2) and (B-3). The content ratio (average value) of the total amount is preferably 5 to 60% by mass, more preferably 10 to 45% by mass, and further preferably 15 to 35% by mass from the viewpoints of rigidity and chemical resistance.

  Content ratio of structural units (mx) and (my) constituting the vinyl copolymer part (BX) contained in the component [B], that is, the rubbery polymer reinforced vinyl resin (B-1), The content ratio (average value) of the structural units (mx) and (my) constituting all the vinyl copolymer parts (BX) included in (B-2) and (B-3) is the molding of the composition. From the viewpoints of workability (fluidity), heat resistance, chemical resistance, and mechanical strength, when these are 100% by mass, preferably 5 to 50% by mass and 50 to 95% by mass, respectively, more preferably. Is 10 to 40% by mass and 60 to 90% by mass, more preferably 15 to 35% by mass and 65 to 85% by mass.

  Since the component [B] is a mixed resin composed of the rubbery polymer reinforced vinyl resin (B-1), (B-2) and (B-3), the three types prepared in advance are used. The method of mixing these resins, the method of obtaining a mixed resin containing three types of resins by the power feed method described later, and the like can be used. The rubber polymer reinforced vinyl resin is a vinyl cyanide compound and an aromatic vinyl in the presence of at least one selected from a diene rubber polymer, an acrylic rubber polymer, and a silicone rubber polymer. A rubber reinforced resin (hereinafter referred to as “rubber reinforced resin (BR)”) obtained by polymerizing (grafting) a vinyl monomer containing a compound (hereinafter referred to as “vinyl monomer (bm)”). In general, this method is applied when producing a rubbery polymer reinforced vinyl resin.

  In order to produce the rubber-reinforced resin (BR), the polymerization method (graft polymerization) of the vinyl monomer (bm) in the presence of a rubbery polymer includes emulsion polymerization, suspension polymerization, and solution polymerization. , Bulk polymerization, or a polymerization method combining these.

  When performing emulsion polymerization, a polymerization initiator, a chain transfer agent (molecular weight regulator), an emulsifier, water, and the like are used.

  Examples of the polymerization initiator include organic peroxides, azo compounds, inorganic peroxides, and redox polymerization initiators.

  Examples of the organic peroxide include tert-butyl hydroperoxide, tert-amyl-tert-butyl peroxide, tert-butyl-tert-hexyl peroxide, tert-amyl-tert-hexyl peroxide, di (tert-hexyl). ) Peroxide, cyclohexanone peroxide, 3,3,5-trimethylcyclohexanone peroxide, methylcyclohexanone peroxide, 1,1-bis (tert-butylperoxy) -3,3,5-trimethylcyclohexane, 1,1- Bis (tert-butylperoxy) cyclohexane, n-butyl-4,4-bis (tert-butylperoxy) valerate, cumene hydroperoxide, 2,5-dimethylhexane-2,5-dihydropa Oxide, 1,3-bis (tert-butylperoxy) -m-isopropyl) benzene, 2,5-dimethyl-2,5-di (tert-butylperoxy) hexane, diisopropylbenzene peroxide, tert-butyl kumi Ruperoxide, decanoyl peroxide, lauroyl peroxide, benzoyl peroxide, 2,4-dichlorobenzoyl peroxide, tert-butylperoxylaurate, tert-butylperoxymonocarbonate, bis (tert-butylcyclohexyl) peroxy Examples include dicarbonate, tert-butyl peroxybenzoate, 2,5-dimethyl-2,5-di (benzoylperoxy) hexane, and the like.

  Examples of the azo compound include 2,2′-azobis (isobutyronitrile), 1,1-azobis (cyclohexane-1-carbonitrile), azocumene, and 2,2′-azobis (2-methylbutyronitrile). 2,2'-azobisdimethylvaleronitrile, 4,4'-azobis (4-cyanovaleric acid), 2- (tert-butylazo) -2-cyanopropane, 2,2'-azobis (2,4,4) 4-trimethylpentane), 2,2'-azobis (2-methylpropane), dimethyl 2,2'-azobis (2-methylpropionate) and the like.

Examples of the inorganic peroxide include potassium persulfate, sodium persulfate, and ammonium persulfate.
The redox polymerization initiator includes sodium sulfite, sodium thiosulfate, sodium formaldehyde sulfoxylate, ascorbic acid, ferrous sulfate, etc. as a reducing agent, potassium peroxodisulfate, hydrogen peroxide, cumene hydroperoxide. , Tert-butyl hydroperoxide or the like as an oxidizing agent can be used.

  Examples of the chain transfer agent include mercaptans such as octyl mercaptan, n-dodecyl mercaptan, tert-dodecyl mercaptan, n-hexyl mercaptan, n-hexadecyl mercaptan, n-tetradecyl mercaptan, tert-tetradecyl mercaptan; Examples include α-methylstyrene dimers. These can be used individually by 1 type or in combination of 2 or more types.

  Examples of the emulsifier include anionic surfactants and nonionic surfactants. Anionic surfactants include higher alcohol sulfates; alkylbenzene sulfonates such as sodium dodecylbenzene sulfonate; aliphatic sulfonates such as sodium lauryl sulfate; higher aliphatic carboxylates, aliphatic phosphates, etc. Is mentioned. Examples of nonionic surfactants include polyethylene glycol alkyl ester compounds and alkyl ether compounds. These can be used individually by 1 type or in combination of 2 or more types.

The production conditions for the emulsion polymerization are not particularly limited. The polymerization initiator or the chain transfer agent can be supplied to the reaction system all at once or continuously.
For the latex obtained by emulsion polymerization, the resin component is usually coagulated with a coagulant to form a powder or the like. Thereafter, it is purified by washing with water, etc., dried and collected. For coagulation, conventionally known coagulants are used, and inorganic salts such as calcium chloride, magnesium sulfate, magnesium chloride, and sodium chloride; inorganic acids such as sulfuric acid and hydrochloric acid; organic acids such as acetic acid and lactic acid are used.

  The rubber reinforced resin (BR) produced by graft polymerization using each of the above rubber polymers is mainly a diene rubber which is a graft resin (diene graft resin, acrylic graft resin or silicone graft resin). A vinyl copolymer containing a polymer-reinforced vinyl resin and further containing a structural unit derived from a vinyl monomer (bm) that is not chemically bonded to the rubber polymer itself or the rubber polymer part. And a polymer (vinyl cyanide / aromatic vinyl copolymer). The latter vinyl copolymer (vinyl cyanide / aromatic vinyl copolymer) is included in other thermoplastic resins (described later).

  On the other hand, when the power feed method is used, in the graft polymerization of the vinyl monomer (bm) containing the vinyl cyanide compound and the aromatic vinyl compound in the presence of the rubbery polymer, the vinyl cyanide compound and the aromatic compound are used. The amount of the vinyl group compound charged is from 5-25: 95 to 75 to 27 to 60:73 to 40 or from 27 to 60:73 to 40 to 5 to 25:95 to 75 by mass ratio, respectively. Graft polymerization is preferred while changing. Since the rubber reinforced resin obtained by this method contains the rubbery polymer reinforced vinyl resin (B-1), (B-2) and (B-3), the rubbery polymer part as a whole The composition (type and ratio) of the vinyl copolymer part (BX) has a wide distribution.

  In the case where the vinyl monomer (bm) further contains other monomers in addition to the vinyl cyanide compound and aromatic vinyl compound, the vinyl cyanide compound and (aromatic vinyl compound and other vinyl compounds) The charging amount of the monomer mixture) is 5 to 25:95 to 75 to 27 to 60:73 to 40, or 27 to 60:73 to 40 to 5 to 25:95, respectively, by mass ratio. Graft polymerization is preferably performed while changing to -75.

  The graft ratio in the rubbery polymer reinforced vinyl resin contained in the rubber reinforced resin (BR) produced by the graft polymerization is preferably 10 to 150% from the viewpoint of impact resistance and molding processability. Preferably it is 25 to 120%, more preferably 35 to 100%.

The graft ratio can be determined by the following formula.
Graft rate (%) = {(S−T) / T} × 100
In the above formula, 1 g of rubber reinforced resin (BR) is added to 20 ml of acetone, shaken with a shaker for 2 hours under a temperature condition of 25 ° C., and then centrifuged under a temperature condition of 5 ° C. This is the mass (g) of the insoluble matter obtained by centrifuging for 1 hour in a machine (number of revolutions: 23,000 rpm) and separating the insoluble content and the soluble content, and T is 1 gram of rubber reinforced resin (BR). It is the mass (g) of the rubbery polymer contained. The mass of the rubbery polymer can be obtained by a method of calculating from the polymerization prescription and the polymerization conversion rate, infrared spectroscopic analysis, pyrolysis gas chromatography, CHN elemental analysis and the like.

The rubbery polymer reinforced vinyl resins (B-1), (B-2) and (B-3) are grafts having different content ratios of the structural unit (mx) in the vinyl copolymer part (BX). A vinyl resin containing a structural unit derived from a vinyl monomer (bm), which is a resin, a synthetic formulation of a rubber reinforced resin (BR), a polymerization conversion rate, and not chemically bonded to a rubbery polymer part Utilizing the ratio of copolymer and unreacted raw material, etc., and having substantially the same structure as the vinyl copolymer part (BX), the vinyl monomer is not chemically bonded to the rubbery polymer part. By subjecting the vinyl copolymer containing the structural unit derived from the body (bm) to liquid chromatography, the vinyl copolymer constituting the vinyl copolymer part (BX) (the structural unit (mx) Containing copolymer), between 5 and 60% by weight By setting the content of _{t 1} and _{t 2} of the forming unit (mx), rubbery polymer-reinforced vinyl-based resin (B-1), determining the ratio of (B-2) and (B-3) Can do. In the production of rubber reinforced resin (BR), if a multi-step addition method of vinyl monomer (bm) such as the power feed method is applied, sampling is performed at regular intervals to determine the composition of the reaction system. It is preferable to do.
In addition, after performing the decomposition | disassembly or removal previously by the kind of rubber-like polymer part, it can also use for a liquid chromatography.

Hereinafter, when the component [B] is composed of a diene rubbery polymer reinforced vinyl resin, the vinyl copolymer (including the structural unit (mx)) constituting all the vinyl copolymer parts (BX). A method for obtaining the distribution of the copolymer) will be described.
In a container containing about 0.4 g of the component [B], 20 mL of ethyl acetate and 20 mL of methanol are added and stirred. Next, with the container immersed in dry ice / ethanol and cooled, ozone gas is passed through the container to decompose the diene rubber. The end of the decomposition reaction can be judged by blue coloration due to excess ozone in the liquid in the container. Thereafter, nitrogen gas is supplied at room temperature until the blue color in the liquid in the container disappears. Next, the vessel is immersed in ice water, 0.5 g of sodium borohydride is added and stirred for 1 hour, and acetic acid is added dropwise. Since bubbles are generated by the dropwise addition of acetic acid, acetic acid is added until the generation of bubbles is completed (about 2 mL). Then, after adding methanol 20mL and stirring for 1 hour, it concentrates to about 5mL under pressure reduction. The obtained concentrated solution is dissolved in 100 mL of methyl ethyl ketone, and is filtered off using a fluororesin filter having a pore diameter of 1 μm, and the precipitate is collected. When this precipitate is dried and then weighed, each vinyl copolymer part (BX) in the diene rubbery polymer reinforced vinyl resin (B-1), (B-2) and (B-3) is obtained. The total mass of the vinyl copolymer constituting is obtained.
Next, when the precipitate is subjected to a gradient analysis of liquid chromatography using n-heptane, 1,2-dichloroethane, acetonitrile or the like, the ratio of structural units (mx) is taken as the horizontal axis, and a specific amount of structural units ( It is possible to obtain a distribution in which the amount of the copolymer containing mx) (the vinyl copolymer constituting the vinyl copolymer part (BX)) is the vertical axis.

  As described above, the graft polymerization forms a vinyl copolymer that is not chemically bonded to the rubbery polymer portion. Therefore, even when the power feed method is applied, the same vinyl copolymer is formed. A polymer is obtained. In the case of the power feed method, there are three types of vinyl copolymers corresponding to the component [D] (other thermoplastic resin) described later, which are different from each other in the proportion of structural units derived from the vinyl cyanide compound. May be obtained.

The component [C] is a specific three types of ethylene / α-olefin rubbery polymer reinforced vinyl resin, that is, a vinyl-based resin having a structural unit (nx) content of 5 mass% or more and t ₁ mass% or less. The ethylene / α-olefin rubbery polymer reinforced vinyl resin (C-1) having a copolymer part and an ethylene / α-olefin rubbery polymer part, and the content of the structural unit (nx) is t ₁ An ethylene / α-olefin rubbery polymer reinforced vinyl resin (C-2) comprising a vinyl copolymer part and an ethylene / α-olefin rubbery polymer part that are more than% by mass and not more than ₂ % by mass And an ethylene / α-olefin comprising a vinyl copolymer part and an ethylene / α-olefin rubbery polymer part having a structural unit (nx) content of more than ₂ % by mass and not more than 60% by mass -Based rubbery polymer reinforced plastic The resin is a mixed resin composed of a resin (C-3), and all three types of resins are an ethylene / α-olefin rubber polymer part, a structural unit (nx) derived from a vinyl cyanide compound, and A rubber polymer reinforced vinyl resin comprising a vinyl copolymer part containing a structural unit (ny) derived from an aromatic vinyl compound, and an ethylene / α-olefin rubber polymer part and a vinyl copolymer The polymer part is chemically combined and combined. The ethylene / α-olefin rubbery polymer reinforced vinyl resins (C-1), (C-2), and (C-3) are resins having different structural unit (nx) contents. Yes, it is a resin in which the content of the structural unit (nx) increases in sequence.

  The content ratio (average value) of the ethylene / α-olefin rubber polymer part and the vinyl copolymer part (CX) constituting the component [C] is not particularly limited, From the viewpoint of impact resistance and appearance of the molded article, when the total of both is 100% by mass, preferably 10 to 90% by mass and 10 to 90% by mass, more preferably 20 to 80% by mass and 20 to 20%. 80 mass%, More preferably, it is 35-75 mass% and 25-65 mass%.

The ethylene / α-olefin rubbery polymer is not particularly limited as long as it is a rubbery material at 25 ° C. and is a copolymer containing a structural unit derived from ethylene and a structural unit derived from α-olefin. .
Examples of the α-olefin include propylene, 1-butene, 1-pentene, 1-hexene, 4-methyl-1-pentene, 1-heptene, 1-octene, 1-decene, 1-dodecene, 1-hexadecene, 1-hexadecene, Eikosen etc. are mentioned. These α-olefins can be used alone or in combination of two or more. The number of carbon atoms of the α-olefin is preferably 3 to 20, more preferably 3 to 12, and still more preferably 3 to 8, from the viewpoint of the effect of reducing stagnation noise and impact resistance.

  The content ratios of the structural unit derived from ethylene and the structural unit derived from α-olefin contained in the ethylene / α-olefin rubber polymer part are both from the viewpoint of the effect of reducing squeaking noise and impact resistance. Is preferably 5 to 95% by mass and 5 to 95% by mass, more preferably 50 to 95% by mass and 5 to 50% by mass, and still more preferably 60 to 95% by mass and 5%. -40 mass%.

  In the present invention, a preferable ethylene / α-olefin rubber polymer part is derived from an ethylene / α-olefin copolymer having a Tm in the range of 0 ° C. to 100 ° C. It may contain structural units derived from the body. Other monomers include non-conjugated diene compounds such as alkenyl norbornenes, cyclic dienes, and aliphatic dienes, preferably 5-ethylidene-2-norbornene and dicyclopentadiene. These non-conjugated diene compounds can be used alone or in combination of two or more. The upper limit of the content ratio of structural units derived from other monomers is preferably 10% by mass, more preferably 5% by mass, and still more preferably with respect to the whole ethylene / α-olefin rubbery polymer part. Is 3% by weight.

  By using an ethylene / α-olefin rubbery polymer having a Tm in the range of 0 ° C. to 100 ° C., an effect of reducing squeaking noise can be obtained. The ethylene / α-olefin rubbery polymer has a Tm of preferably 10 ° C. to 90 ° C., more preferably 20 ° C. to 80 ° C., and Tm of 20 ° C. to 80 ° C. When an olefin-based rubbery polymer is included, the effect of reducing squeaking noise is further improved, and impact resistance is further improved, which is preferable. The Tm of the ethylene / α-olefin rubber polymer in the range of 0 ° C. to 100 ° C. means that the ethylene / α-olefin rubber polymer has a crystalline component. If a crystalline part is present in the ethylene / α-olefin-based rubbery polymer, the occurrence of stick-slip phenomenon is suppressed, so that it is considered that the generated squeaking noise is reduced.

  The ethylene / α-olefin-based rubbery polymer part is derived from an ethylene / α-olefin copolymer composed of a structural unit derived from ethylene and a structural unit derived from α-olefin from the viewpoint of reducing squeaking noise. It is preferable to do. Among these, an ethylene / propylene copolymer, an ethylene / 1-butene copolymer, and an ethylene / 1-octene copolymer are preferable, and an ethylene / propylene copolymer is particularly preferable.

  Next, the vinyl copolymer part (CX) is a resin part including a structural unit (nx) derived from a vinyl cyanide compound and a structural unit (ny) derived from an aromatic vinyl compound.

  The proportion of the total amount of the structural units (nx) and (ny) constituting the vinyl copolymer part (CX) is not particularly limited, but the lower limit is from the viewpoint of rigidity and chemical resistance. Preferably it is 80 mass% with respect to the whole copolymer part (CX), More preferably, it is 90 mass%, More preferably, it is 100 mass%.

  In addition to the structural units (nx) and (ny), the vinyl-based copolymer part (CX) is not limited to the structural units (nx) and (ny). May also be included. Monomers that give the structural unit (nz) include (meth) acrylic acid ester compounds, maleimide compounds, unsaturated acid anhydrides, carboxyl group-containing unsaturated compounds, amino group-containing unsaturated compounds, amide group-containing unsaturated compounds. Examples include saturated compounds, hydroxyl group-containing unsaturated compounds (except for (meth) acrylic acid ester compounds in which the ester moiety contains a hydroxyalkyl group), epoxy group-containing unsaturated compounds, oxazoline group-containing unsaturated compounds, and the like. These can be used individually by 1 type or in combination of 2 or more types.

Examples of the vinyl monomer used for the formation of the vinyl copolymer part (CX) include a vinyl cyanide compound, an aromatic vinyl compound used for the formation of the vinyl copolymer part (BX), ) Acrylic ester compounds, maleimide compounds, unsaturated acid anhydrides, carboxyl group-containing unsaturated compounds, amino group-containing unsaturated compounds, amide group-containing unsaturated compounds, hydroxyl group-containing unsaturated compounds, epoxy group-containing unsaturated compounds In the oxazoline group-containing unsaturated compound, the exemplified compounds can be used. Each compound can be used alone or in combination of two or more.
As the vinyl cyanide compound, acrylonitrile is preferable, and as the aromatic vinyl compound, styrene is preferable.
Moreover, as a monomer which gives the said structural unit (nz), a (meth) acrylic acid ester compound and a maleimide type compound are preferable.

  The component [C] is composed of three types of ethylene / α-olefin rubbery polymer reinforced vinyl resins (C-1), (C-2) and (C) containing the structural units (nx) and (ny). C-3). These ethylene / α-olefin rubbery polymer reinforced vinyl resins (C-1), (C-2) and (C-3) contain structural units (nx) and (ny), C] includes a structural unit (nz) derived from another vinyl monomer, the structural unit (nz) is included in all ethylene / α-olefin rubbery polymer reinforced vinyl resins. It may be included, and may be included only in any one or two.

In the present invention, preferred examples of the ethylene / α-olefin rubbery polymer reinforced vinyl resin (C-1), (C-2) or (C-3) constituting the component [C] are as follows: Street.
(1) A vinyl copolymer part composed of an ethylene / α-olefin rubbery polymer part and a structural unit (nx) derived from a vinyl cyanide compound and a structural unit (ny) derived from an aromatic vinyl compound ( CX) ethylene / α-olefin rubber polymer reinforced vinyl resin (2) ethylene / α-olefin rubber polymer part, structural unit (nx) derived from vinyl cyanide compound, aromatic Ethylene / α-olefin rubber polymer reinforced vinyl resin (3) having a structural unit (ny) derived from a vinyl compound and a vinyl copolymer part (CX) composed of a structural unit derived from a maleimide compound Ethylene / α-olefin rubbery polymer part, structural unit derived from vinyl cyanide compound (nx), structural unit derived from aromatic vinyl compound (ny) and ( Ethylene / α-olefin rubbery polymer reinforced vinyl resin having a vinyl copolymer part (CX) composed of a structural unit derived from a (meth) acrylate compound

  Note that two or three of the ethylene / α-olefin rubbery polymer reinforced vinyl resins (C-1), (C-2) and (C-3) are the above (1) to (3 ) May be the same, or may be different resins, that is, resins including all of the above (1) to (3). In the ethylene / α-olefin rubbery polymer reinforced vinyl resins (C-1), (C-2) and (C-3), the types of the structural units (nx) may be the same. And may be different. The type of the structural unit (ny) may also be the same or different. The type of the structural unit (nz) may also be the same or different.

The vinyl copolymer constituting the vinyl copolymer portion of the ethylene / α-olefin rubber polymer reinforced vinyl resin (C-1) has a structural unit (nx) of 5 mass% or more t _1. It may be a copolymer composed of structural units (nx) and (ny) as described above, or a copolymer composed of structural units (nx), (ny) and (nz). There may be. Further, as described above, the vinyl copolymer constituting the vinyl copolymer part may be composed of at least one copolymer including a predetermined amount of the structural unit (nx). For example, when it is composed of two kinds of copolymers and 5 ≦ t ₁₁ <t ₁₂ ≦ t ₁ , a copolymer containing t ₁₁ mass% of structural units (nx) and structural units (nx) And an ethylene / α-olefin rubbery polymer reinforced vinyl resin containing a vinyl copolymer part comprising t ₁₂ % by mass of a copolymer.
t ₁ is preferably 10 to 30% by mass, more preferably 15 to 30% by mass, still more preferably 17 to 28% by mass, and particularly preferably 22 to 28% by mass. When two or more types of copolymers having a structural unit (nx) content of 5% by mass or more and t ₁ % by mass or less are contained, “ethylene / α-olefin rubbery polymer reinforced vinyl resin (C-1) The value shown as “content of the structural unit (nx) contained in the vinyl copolymer constituting the vinyl copolymer part” is included in each vinyl copolymer constituting the vinyl copolymer part. It is an average value calculated from the content of the structural unit (nx).
The vinyl copolymer constituting the vinyl copolymer portion of the ethylene / α-olefin rubber polymer reinforced vinyl resin (C-2) has a structural unit (nx) exceeding t ₁ % by mass. T ₂ % by mass or less and a copolymer containing structural units (nx) and (ny), and may be a copolymer comprising structural units (nx) and (ny) as described above. , A copolymer composed of structural units (nx), (ny) and (nz) may be used. Further, as described above, the vinyl copolymer constituting the vinyl copolymer part may be composed of at least one copolymer including a predetermined amount of the structural unit (nx). For example, when it is composed of two types of copolymers and t ₁ <t ₂₁ <t ₂₂ ≦ t ₂ , a copolymer containing t ₂₁ mass% of structural units (nx) and structural units (nx ) can be used to t ₂₂ wt% including a copolymer and a vinyl-based copolymer of ethylene · alpha-olefin rubbery polymer-reinforced vinyl-based resin containing a consisting.
t ₂ is preferably 15 to 45 wt%, more preferably 20 to 42 wt%, more preferably 22 to 40 wt%, even more preferably 25 to 35% by weight, particularly preferably 27 to 33 wt% . When two or more vinyl copolymers having a structural unit (nx) content of more than t ₁ mass% and not more than t ₂ mass% are contained, “ethylene / α-olefin rubber polymer reinforced vinyl resin” The value shown as “content of structural unit (nx) contained in copolymer constituting vinyl copolymer part of (C-2)” is the value of each vinyl copolymer constituting vinyl copolymer part. It is the average value computed from content of the structural unit (nx) contained in.
Further, in the present invention, since the effect of reducing the squeaking noise, the impact resistance, and the balance of the appearance of the molded product become significant, the relationship between t ₁ and t ₂ is (t ₂ −t ₁ ) ≧ 3. (% By mass), preferably (t ₂ -t ₁ ) ≧ 4 (% by mass), more preferably (t ₂ -t ₁ ) ≧ 4.5 (% by mass). However, usually (t ₂ -t ₁ ) ≦ 10 (mass%), preferably (t ₂ -t ₁ ) ≦ 9 (mass%), more preferably (t ₂ -t ₁ ) ≦ 7 (mass%). It is. When (t ₂ -t ₁ ) <3 (mass%), the effect of the present invention cannot be sufficiently obtained.
The vinyl copolymer constituting the vinyl copolymer portion of the ethylene / α-olefin rubber polymer reinforced vinyl resin (C-3) has a structural unit (nx) exceeding t ₂ mass%. 60% by mass or less, preferably more than ₂ % by mass and 60% by mass or less, and a copolymer composed of structural units (nx) and (ny) as described above. Alternatively, it may be a copolymer composed of structural units (nx), (ny), and (nz). Further, as described above, the vinyl copolymer constituting the vinyl copolymer part may be composed of at least one copolymer including a predetermined amount of the structural unit (nx). For example, in the case of two types of copolymers, where t ₂ <t ₃₁ <t ₃₂ ≦ 60, a copolymer containing t ₃₁ mass% of the structural unit (nx) and the structural unit (nx) And an ethylene / α-olefin rubbery polymer reinforced vinyl resin containing a vinyl copolymer part composed of ₃₂ % by mass of t.
When containing vinyl copolymer content is 60 wt% or less than ₂ mass% t of the structural units (nx) two or more, "ethylene · alpha-olefin rubbery polymer-reinforced vinyl-based resin ( The value shown as “content of structural unit (nx) contained in the copolymer constituting the vinyl copolymer part of C-3)” is the value indicated for each vinyl copolymer constituting the vinyl copolymer part. It is an average value calculated from the content of the structural unit (nx) contained.

The content ratio of the ethylene / α-olefin rubbery polymer reinforced vinyl resin (C-1), (C-2) and (C-3) constituting the component [C] is an effect of reducing squeaking noise, From the viewpoint of impact resistance and appearance of the molded product, when these totals are 100% by mass, they are 1 to 95% by mass, 1 to 98% by mass, and 0.1 to 90% by mass, respectively, preferably Is 3 to 90% by mass, 5 to 90% by mass and 2 to 70% by mass, more preferably 7 to 65% by mass, 20 to 80% by mass and 3 to 55% by mass, still more preferably 10 to 50% by mass, 30%. -70 mass% and 5-40 mass%.
Furthermore, moldability of the composition (flowability), the reduction effect and the impact resistance of the squeak is remarkable, _{t 1} is 15 to 30 wt%, _{t 2} is 22 to 40 wt% When the content ratio of the ethylene / α-olefin rubbery polymer reinforced vinyl resin (C-1), (C-2) and (C-3) is 100% by mass, Each is preferably 3-90 mass%, 5-90 mass% and 2-70 mass%, more preferably 7-65 mass%, 20-80 mass% and 3-55 mass%, still more preferably 10-50 mass%. %, 30 to 70% by mass, and 5 to 40% by mass.

  Moreover, with respect to the total amount of the vinyl copolymer part (CX) contained in the ethylene / α-olefin rubbery polymer reinforced vinyl resin (C-1), (C-2) and (C-3), The content ratio (average value) of the total amount of the structural unit (nx) is preferably 5 to 60% by mass, more preferably 10 to 45% by mass, and still more preferably 15 to 35% by mass, from the viewpoint of rigidity and chemical resistance. %.

  Content ratio of structural units (nx) and (ny) constituting the vinyl copolymer part (CX) contained in the component [C], that is, the ethylene / α-olefin rubbery polymer reinforced vinyl resin. Content ratio (average value) of structural units (nx) and (ny) constituting all vinyl copolymer parts (CX) included in (C-1), (C-2) and (C-3) Are preferably 5 to 50% by mass and 50 to 50% by mass, respectively, from the viewpoint of molding processability (fluidity), heat resistance, chemical resistance and mechanical strength of the composition, when the total of these is 100% by mass. It is 95 mass%, More preferably, it is 10-40 mass% and 60-90 mass%, More preferably, it is 15-35 mass% and 65-85 mass%.

The component [C] is a mixed resin composed of an ethylene / α-olefin rubbery polymer reinforced vinyl resin (C-1), (C-2) and (C-3). Further, a method of mixing each prepared resin in advance, a method of obtaining a mixed resin by the power feed method as described above, and the like can be used. The ethylene / α-olefin rubbery polymer reinforced vinyl resin is a vinyl monomer containing a vinyl cyanide compound and an aromatic vinyl compound in the presence of an ethylene / α-olefin rubbery polymer (hereinafter referred to as “vinyl monomer”). , “Vinyl monomer (cm)”), which is contained in a rubber reinforced resin (hereinafter referred to as “rubber reinforced resin (CR)”) obtained by polymerization (graft polymerization). This method is also usually applied to the production of an olefin rubbery polymer reinforced vinyl resin.
When the rubber reinforced resin (CR) is produced by graft polymerization, the same method as that for the rubber reinforced resin (BR) can be applied.

  In the case of using the power feed method, in the presence of an ethylene / α-olefin rubber polymer, a cyanide compound (cm) containing a vinyl cyanide compound and an aromatic vinyl compound is grafted. The amount of the vinyl compound and aromatic vinyl compound charged is, by mass ratio, 5-25: 95-75 to 27-60: 73-40, or 27-60: 73-40 to 5-25: 95, respectively. Graft polymerization is preferably performed while changing to -75. The rubber reinforced resin obtained by this method contains ethylene / α-olefin rubbery polymer reinforced vinyl resins (C-1), (C-2) and (C-3), The composition (type and ratio) of the vinyl copolymer part (CX) with respect to the rubbery polymer part has a wide distribution.

  When the vinyl monomer (cm) further contains other monomers in addition to the vinyl cyanide compound and the aromatic vinyl compound, the vinyl cyanide compound and (the aromatic vinyl compound and other vinyl The charging amount of the monomer mixture) is 5 to 25:95 to 75 to 27 to 60:73 to 40, or 27 to 60:73 to 40 to 5 to 25:95, respectively, by mass ratio. Graft polymerization is preferably performed while changing to -75.

  The graft ratio in the ethylene / α-olefin rubbery polymer reinforced vinyl resin contained in the rubber reinforced resin (CR) produced by the graft polymerization is preferably from the viewpoint of impact resistance and appearance of the molded product. It is 10 to 150%, more preferably 25 to 120%, still more preferably 35 to 100%. This graft ratio can be determined by the same method as the graft ratio in the rubbery polymer reinforced vinyl resin contained in the rubber reinforced resin (BR).

The ethylene / α-olefin rubbery polymer reinforced vinyl resins (C-1), (C-2) and (C-3) are structural units (nx) of the vinyl copolymer part (CX). It is a graft resin with different content ratios, and is derived from a vinyl-based monomer (cm) that is not chemically bonded to a rubber-reinforced resin (CR) synthesis formulation, polymerization conversion rate, and rubbery polymer part. Utilizing the proportion of the vinyl copolymer containing structural units and unreacted raw materials, it is chemically bonded to the rubbery polymer part, which is substantially the same configuration as the vinyl copolymer part (CX). A vinyl copolymer containing a structural unit derived from a vinyl monomer (cm), for example, by subjecting it to liquid chromatography, thereby forming a vinyl copolymer part (CX). Compound (copolymer containing structural unit (nx)) To obtain a distribution, by setting the content of t ₁ and t ₂ of the structural units (nx) between 5 to 60 wt%, ethylene · alpha-olefin rubbery polymer-reinforced vinyl-based resin (C-1 ), (C-2) and (C-3) can be determined. In the production of rubber reinforced resin (CR), when a multi-step addition method of vinyl monomer (cm) such as the power feed method is applied, sampling at regular intervals to understand the composition of the reaction system It is preferable to do.
In addition, after performing the decomposition | disassembly or removal previously by the kind of rubber-like polymer part, it can also use for a liquid chromatography.

  The rubber reinforced resin (CR) produced by the graft polymerization is, like the rubber reinforced resin (BR), mainly an ethylene / α-olefin rubbery polymer reinforced vinyl which is an ethylene / α-olefin graft resin. Derived from vinyl-based monomer (cm) that is not chemically bonded to ethylene / α-olefin-based rubbery polymer itself or ethylene / α-olefin-based rubbery polymer And a vinyl copolymer (vinyl cyanide / aromatic vinyl copolymer) containing a structural unit. The latter vinyl copolymer (vinyl cyanide / aromatic vinyl copolymer) is included in other thermoplastic resins (described later). When the power feed method is applied, a similar vinyl copolymer may be obtained.

  In the thermoplastic resin composition of the present invention, a rubbery polymer part (diene rubbery polymer part, acrylic rubbery polymer part or silicone rubbery polymer part) derived from the component [B], and The content ratio with the ethylene / α-olefin rubber polymer part derived from the component [C] is 100% in total from the viewpoint of the effect of reducing squeaking noise, impact resistance and appearance of the molded product. %, Preferably 10 to 90% by mass and 10 to 90% by mass, more preferably 20 to 80% by mass and 20 to 80% by mass, still more preferably 40 to 65% by mass and 35 to 60% by mass, respectively. %.

  In the thermoplastic resin composition of the present invention, the components [A], [B] and [C] are excellent in impact resistance, heat resistance and surface impact resistance, and are made of the same or other materials. When the total of these is 100% by mass, preferably 5 to 99% by mass, respectively, since a molded product with reduced squeaking noise (frictional sound) generated when they are in dynamic contact with each other is obtained. 0.5 to 70 mass% and 0.5 to 70 mass%, more preferably 20 to 95 mass%, 2 to 55 mass% and 2 to 55 mass%, still more preferably 35 to 90 mass%, 4 to 40 mass% % And 5-45% by mass, particularly preferably 50-85% by mass, 5-25% by mass and 7-30% by mass.

The thermoplastic resin composition of the present invention contains the above-mentioned components [A], [B] and [C], and is in dynamic contact with other members when Tm is in the range of 0 ° C to 100 ° C. Although it is possible to give a molded product in which the squeaking noise generated at the time is reduced, other thermoplastic resins may be further contained depending on the application.
Other thermoplastic resins include rubber polymer reinforced vinyl resins having a different structure from the above components [B] and [C], and (co) polymers (aromatics) containing structural units derived from vinyl monomers. Vinyl (co) polymer, acrylic (co) polymer, polyvinyl chloride resin, polyvinylidene chloride resin, fluororesin, etc.), polyolefin resin, polyester resin, polyamide resin, and the like. These may be used alone or in combination of two or more.

  When the thermoplastic resin composition of the present invention contains other thermoplastic resin, the upper limit of the content is preferably based on 100 parts by mass of the total of the above components [A], [B] and [C]. Is 150 parts by mass, more preferably 100 parts by mass.

  The other thermoplastic resin preferably includes a structural unit (dx) derived from a vinyl cyanide compound and a structural unit (dy) derived from an aromatic vinyl compound, and other vinyls copolymerizable with these compounds. It is a copolymer which may further contain a structural unit (dz) derived from a monomer, that is, a vinyl cyanide / aromatic vinyl copolymer. This vinyl cyanide / aromatic vinyl-based copolymer may be derived from the copolymer by-produced during the production of the components [B] and [C] as described above, and is prepared separately. It may be.

In the present invention, a particularly preferred vinyl cyanide / aromatic vinyl copolymer is a mixed resin comprising the following copolymers (D-1), (D-2) and (D-3) (hereinafter referred to as “component”). [D] ”).
(D-1) Copolymer (D-2) containing structural unit (dx) at 5% by mass or more and r ₁ % by mass or less, r ₂ % by mass or more exceeding r ₁ % by mass of structural unit (dx) Copolymer (D-3) containing the structural unit (dx) in an amount of more than 60 mass% and exceeding ₂ mass%, where (r ₂ −r ₁ ) ≧ 3 (mass%). . In the above structure, the structural unit (dx) is derived from the same structural unit derived from the vinyl cyanide compound as the structural unit (mx) or (nx), but the structural unit (dx) The structural unit (mx) or (nx) may be the same as or different from each other. Further, the structural unit (dy) is derived from the same structural unit derived from the vinyl cyanide compound as the structural unit (my) or (ny), but the structural unit (dy) and the structural unit (my) ) Or (ny) may be the same as or different from each other.

The copolymers (D-1), (D-2) and (D-3) are copolymers having different contents of the structural unit (dx) from each other, and sequentially contain the structural unit (dx). It is a vinyl cyanide / aromatic vinyl copolymer having a large amount.
The component [D] is composed of the copolymers (D-1), (D-2), and (D-3) having the above-described configuration, so that the component [A] is separated from the component [B]. Compatibility (when component [C] is included, compatibility between component [A] and components [B] and [C]) is high, and further, the effect of reducing squeaking noise, heat resistance and resistance It is possible to efficiently produce a molded product having an excellent impact balance.

The copolymer (D-1) is a copolymer containing the structural unit (dx) in an amount of 5% by mass or more and r ₁ % by mass or less, and as described above, from the structural units (dx) and (dy). The copolymer which consists of a structural unit (dx), (dy), and (dz) may be sufficient. Moreover, as mentioned above, this copolymer (D-1) can consist of at least 1 type of the copolymer containing the predetermined amount of a structural unit (dx). For example, when it is composed of two kinds of copolymers and 5 ≦ r ₁₁ <r ₁₂ ≦ r ₁ , a copolymer containing ₁₁ mass% of structural units (dx) and structural units (dx) And a copolymer (D-1) consisting of a copolymer containing ₁₂ % by mass of r.
r ₁ is preferably 10 to 30% by mass, more preferably 15 to 30% by mass, still more preferably 17 to 28% by mass, and particularly preferably 22 to 27% by mass. When two or more types of copolymers having a structural unit (dx) content of 5% by mass or more and r ₁ % by mass or less are contained, “the content of the structural unit (dx) contained in the copolymer (D-1)” The value shown as “is an average value calculated from the content of the structural unit (dx) contained in each copolymer.
The copolymer (D-2) is a copolymer containing structural units (dx) and (dy) containing the structural unit (dx) in an amount exceeding ₁ mass% and ₂ mass% or less. As described above, it may be a copolymer composed of the structural units (dx) and (dy), or may be a copolymer composed of the structural units (dx), (dy), and (dz). Moreover, as mentioned above, this copolymer (D-2) can consist of at least 1 type of the copolymer containing the predetermined amount of a structural unit (dx). For example, when it is composed of two types of copolymers and r ₁ <r ₂₁ <r ₂₂ ≦ r ₂ , the copolymer containing the structural unit (dx) of r ₂₁ % by mass and the structural unit (dx ) And a copolymer (D-2) comprising ₂₂ % by mass of r.
r ₂ is preferably 15 to 45% by mass, more preferably 20 to 42% by mass, still more preferably 22 to 40% by mass, still more preferably 25 to 35% by mass, and particularly preferably 27 to 33% by mass. . If the copolymer is r ₂ wt% or less content of more than ₁ wt% r of the structural unit (dx) including two or more, "copolymer (D-2) to include structural units (dx) The value shown as “content of” is an average value calculated from the content of the structural unit (dx) contained in each copolymer.
In the present invention, when r ₂ is 15 to 45% by mass, particularly in the composition of the present invention, component [B] (when component [C] is included, component [A], component [B] and [B] C] both) and the copolymer (D-2) are improved, and the compatibility of the component [A] with the copolymers (D-1) and (D-3) is also improved. As a result, the compatibility between the component [A] and the components [B] and [C] is improved, and the resulting molded article has an excellent balance between impact resistance and heat resistance.
In the present invention, the relationship between r ₁ and r ₂ where the effect of the balance between heat resistance and impact resistance becomes significant is (r ₂ −r ₁ ) ≧ 3 (mass%), preferably (r ₂ −r ₁ ) ≧ 4 (mass%), more preferably (r ₂ −r ₁ ) ≧ 4.5 (mass%). However, usually (r ₂ −r ₁ ) ≦ 10 (mass%), preferably (r ₂ −r ₁ ) ≦ 9 (mass%), more preferably (r ₂ −r ₁ ) ≦ 7 (mass%). It is. When (r ₂ −r ₁ ) <3 (mass%), the excellent effect of the present invention by the component [D] cannot be sufficiently obtained.
The copolymer (D-3) is a copolymer containing the structural unit (dx) in an amount exceeding 60% by mass and exceeding ₂ % by mass, and as described above, the structural units (dx) and (dy) ) Or a copolymer consisting of structural units (dx), (dy) and (dz). Moreover, as mentioned above, this copolymer (D-3) can consist of at least 1 type of the copolymer containing the predetermined amount of a structural unit (dx). For example, when it is composed of two kinds of copolymers and r ₂ <r ₃₁ <r ₃₂ ≦ 60, a copolymer containing ₃₁ % by mass of structural unit (dx) and structural unit (dx) And a copolymer (D-3) comprising ₃₂ % by mass of r.
When the content of the structural unit (dx) exceeds ₂ % by mass and contains two or more types of copolymers of 60% by mass or less, “the structural unit (dx) contained in the copolymer (D-3) The value shown as “content” is an average value calculated from the content of the structural unit (dx) contained in each copolymer.

The content ratio of the copolymers (D-1), (D-2) and (D-3) constituting the component [D] is the sum of these from the viewpoint of impact resistance and appearance of the molded product. When it is 100% by mass, preferably 1 to 80% by mass, 3 to 80% by mass and 1 to 80% by mass, more preferably 5 to 70% by mass, 10 to 70% by mass and 2 to 55% by mass, respectively. More preferably, they are 10-50 mass%, 20-65 mass%, and 3-40 mass%, Most preferably, they are 15-50 mass%, 25-60 mass%, and 3-35 mass%.
In addition, the effect of the fluidity of the composition and the balance between the heat resistance and impact resistance of the molded product obtained is significant when r ₁ is 10 to 30% by mass and r ₂ is 20 to 40%. When the content of the copolymers (D-1), (D-2) and (D-3) is 100% by mass, the content is preferably 5 to 70%. Mass%, 10-70 mass% and 2-55 mass%, more preferably 10-55 mass%, 20-65 mass% and 3-40 mass%, still more preferably 15-50 mass%, 25-60 mass% And 3 to 35% by mass, particularly preferably 20 to 50% by mass, 35 to 60% by mass, and 3 to 30% by mass.

The copolymer (D-1) is preferably a copolymer composed of structural units (dx) and (dy), and the copolymer is composed of structural units (dx), (dy), and (dz). You may use together with the copolymer which consists of. As the monomer for forming the structural unit (dz), maleimide compounds such as N-phenylmaleimide and (meth) acrylic acid ester compounds such as methyl methacrylate are preferable.
The copolymer (D-2) is preferably a copolymer composed of structural units (dx) and (dy), and the copolymer is composed of structural units (dx), (dy) and (dz). You may use together with the copolymer which consists of. As the monomer for forming the structural unit (dz), maleimide compounds such as N-phenylmaleimide and (meth) acrylic acid ester compounds such as methyl methacrylate are preferable.
The copolymer (D-3) is preferably a copolymer composed of structural units (dx) and (dy), and the copolymer includes structural units (dx), (dy) and ( You may use together with the copolymer which consists of dz). As the monomer for forming the structural unit (dz), maleimide compounds such as N-phenylmaleimide and (meth) acrylic acid ester compounds such as methyl methacrylate are preferable.

  The intrinsic viscosity [η] (in methyl ethyl ketone, 30 ° C.) of the component [D] is preferably 0.2 to 0.9 dl / g, more preferably 0.25 to 0.5 from the viewpoint of moldability and impact resistance. 0.85 dl / g, more preferably 0.3 to 0.8 dl / g. The intrinsic viscosity [η] of the vinyl cyanide / aromatic vinyl copolymer was prepared by dissolving 5 copolymers having different structural units in methyl ethyl ketone, and preparing Ubbelohde viscosity tubes. And can be determined by measuring the reduced viscosity of each concentration at 30 ° C.

Since the component [D] is a mixed resin comprising the copolymers (D-1), (D-2) and (D-3), the prepared copolymers are mixed in advance. And a method of obtaining a mixed resin by a power feed method described later. The vinyl cyanide / aromatic vinyl copolymer can be usually produced by subjecting a vinyl monomer to emulsion polymerization, solution polymerization, bulk polymerization or the like in the absence of a rubbery polymer. it can.
As described above, the vinyl cyanide / aromatic vinyl copolymer produced as a by-product when the component [B] or [C] is produced using a vinyl monomer containing a vinyl cyanide compound and an aromatic vinyl compound. The polymer (ungrafted polymer contained in the rubber-reinforced resin) may be contained in the polymer (D-1), (D-2) or (D-3). Graft polymers can be used as appropriate.

  In one reaction system, when producing two or three kinds of the polymers (D-1), (D-2) and (D-3), each monomer for the reaction system A method of proceeding polymerization while changing the charged amount (feed amount, feed rate, etc.) of the vinyl cyanide compound and the aromatic vinyl compound (for example, power feed method disclosed in JP-A-50-63085) Etc. can be applied. According to this power feed method, since a plurality of monomers can be sequentially polymerized at different ratios, while changing the charged amount (feed amount, feed rate) of all monomers, Containing a collection of copolymers in which the content of the structural unit (dx) is in a wide range of 5 to 60% by mass by continuously or intermittently supplying the vinyl cyanide compound to the reaction system It can be. The copolymer aggregate obtained by this power feed method may contain the polymers (D-1), (D-2), and (D-3) at a predetermined ratio. Since it is possible, it is suitable as a copolymer for component [D].

  The component [D] is obtained by polymerization while changing the charged amount of the vinyl cyanide compound and the aromatic vinyl compound from 5 to 25:95 to 75 to 25 to 60:75 to 40 by mass ratio. Polymerization while changing the mass of the aggregate of the copolymer and / or the charged amount of the vinyl cyanide compound and the aromatic vinyl compound from 25 to 60:75 to 40 to 5 to 25:95 to 75 It is preferable to use an aggregate of the copolymer obtained as described above. In addition, changing the charge amount means increasing or decreasing the supply amount of the vinyl cyanide compound or the aromatic vinyl compound, and changing the use amount in the middle, 25:75 to 25:75 This method is not included.

  In addition, when a monomer (other monomer) other than the vinyl cyanide compound and the aromatic vinyl compound is used, the above-mentioned vinyl cyanide compound and (mixture of the aromatic vinyl compound and the other monomer) are charged. Aggregates of copolymers obtained by polymerization while changing the amount from 5 to 25:95 to 75 to 25 to 60:75 to 40 by mass ratio, and / or the vinyl cyanide compound and ( Copolymer obtained by polymerizing the mixture of the aromatic vinyl compound and other monomers) while changing the mass ratio from 25-60: 75-40 to 5-25: 95-75. It is preferable to use an assembly of

When obtaining the distribution of the copolymer containing the structural unit (dx) from the component [D] consisting of the copolymers (D-1), (D-2) and (D-3), the component [B] The same method as in the case of the vinyl copolymer constituting the vinyl copolymer part in can be applied. That is, after performing a gradient analysis of liquid chromatography using n-heptane, 1,2-dichloroethane, acetonitrile and the like, the contents r ₁ and r ₂ of the structural unit (dx) are changed between 5 to 60% by mass. By setting, the copolymers (D-1), (D-2) and (D-3) can be determined.

  When the thermoplastic resin composition of the present invention contains the above component [D], its content is excellent in impact resistance, heat resistance and surface impact resistance, and is in dynamic contact with members made of the same or other materials. When the total of the above components [A], [B] and [C] is 100 parts by mass, a molded product with reduced squeaking noise (friction noise) generated when Is 5 to 150 parts by mass, more preferably 10 to 100 parts by mass, still more preferably 15 to 85 parts by mass, and particularly preferably 20 to 80 parts by mass.

  The resin component contained in the thermoplastic resin composition of the present invention is the above components [A], [B] and [C], or the above components [A], [B], [C] and [D]. In this case, the content of the ethylene / α-olefin-based rubbery polymer part derived from the component [C] is based on the effect of reducing the squeaking noise and the impact resistance, with respect to the entire thermoplastic resin composition. Preferably it is 0.5-25 mass%, More preferably, it is 1.5-18 mass%, More preferably, it is 3-12 mass%. Also, the rubbery polymer part (diene rubbery polymer part, acrylic rubbery polymer part or silicone rubbery polymer part) derived from the component [B] and the component [C]. The content ratio of the ethylene / α-olefin-based rubbery polymer part is preferably 10 to 90% by mass, when the total is 100% by mass, from the viewpoint of the effect of reducing stagnation noise and impact resistance. % And 10 to 90% by mass, more preferably 20 to 80% by mass and 20 to 80% by mass, still more preferably 30 to 70% by mass and 30 to 70% by mass, particularly preferably 35 to 60% by mass and 40 to 65%. % By mass. Further, the ratio of the total content of the rubbery polymers derived from the components [B] and [C] is preferably 0 with respect to the whole composition from the viewpoint of molding processability and impact resistance of the molded product. 0.5 to 30% by mass, more preferably 1 to 25% by mass, and still more preferably 1.5 to 20% by mass.

  The thermoplastic resin composition of the present invention may further comprise a filler, a plasticizer, an antioxidant, an ultraviolet absorber, an anti-aging agent, a flame retardant, a lubricant, a stabilizer, a weathering agent, light depending on the purpose and application. Stabilizers, heat stabilizers, antistatic agents, mold release agents, antibacterial agents, preservatives, colorants (pigments, dyes, etc.), fluorescent brighteners, conductivity-imparting agents and the like can be included.

  Examples of the filler include heavy calcium carbonate, colloidal calcium carbonate, light calcium carbonate, magnesium carbonate, zinc carbonate, aluminum hydroxide, magnesium hydroxide, carbon black, clay, talc, fumed silica, calcined silica, precipitated silica, Ground silica, fused silica, kaolin, diatomaceous earth, zeolite, titanium oxide, quicklime, iron oxide, zinc oxide, barium oxide, aluminum oxide, magnesium oxide, aluminum sulfate, glass fiber, carbon fiber, glass balloon, shirasu balloon, saran Examples include balloons and phenol balloons. These can be used alone or in combination of two or more.

  Examples of the plasticizer include phthalic acid ester, trimellitic acid ester, pyromellitic acid ester, aliphatic monobasic acid ester, aliphatic dibasic acid ester, phosphoric acid ester, polyhydric alcohol ester, epoxy plasticizer, high Examples include molecular plasticizers and chlorinated paraffins. These can be used alone or in combination of two or more.

  Examples of the antioxidant include hindered amine compounds, hydroquinone compounds, hindered phenol compounds, sulfur-containing compounds, and phosphorus-containing compounds. These can be used alone or in combination of two or more.

  Examples of the ultraviolet absorber include benzophenone compounds, benzotriazole compounds, and triazine compounds. These can be used alone or in combination of two or more.

  Examples of the anti-aging agent include naphthylamine compounds, diphenylamine compounds, p-phenylenediamine compounds, quinoline compounds, hydroquinone derivative compounds, monophenol compounds, bisphenol compounds, trisphenol compounds, polyphenol compounds, thiols. Examples thereof include bisphenol compounds, hindered phenol compounds, phosphite compounds, imidazole compounds, nickel dithiocarbamate salts, phosphoric compounds, and the like. These can be used alone or in combination of two or more.

Examples of the flame retardant include halogen-containing compounds, phosphorus-containing compounds, guanidine compounds, and silicone compounds. These can be used alone or in combination of two or more.
In addition, aluminum hydroxide, antimony oxide, magnesium hydroxide, zinc borate, zirconium-based compound, molybdenum-based compound, zinc stannate, and the like can be used.

  Examples of the mold release agent include olefin wax, silicone oil, higher fatty acid, higher fatty acid ester of monohydric or polyhydric alcohol, natural animal wax such as beeswax, natural plant wax such as carnauba wax, and natural oil such as paraffin wax. Examples thereof include natural coal-based waxes such as petroleum wax and montan wax. These can be used alone or in combination of two or more.

The olefin wax is usually a (co) polymer containing structural units derived from olefins. The structure of the olefin wax is not particularly limited, and may be linear or branched.
Examples of the olefin wax include polyethylene wax, polypropylene wax, and olefin copolymer wax (for example, ethylene copolymer wax), and these may be partial oxides. When the olefin wax is a copolymer, for example, olefin such as ethylene, propylene, 1-butene, 1-hexene, 1-decene, 4-methyl-1-butene, 4-methyl-1-pentene, etc. A copolymer containing two or more structural units derived from olefin; at least one of structural units derived from olefin and a monomer copolymerizable with olefin (unsaturated carboxylic acid or acid anhydride thereof, (meth) acrylic acid) And a copolymer composed of a structural unit derived from an alkyl ester or the like). These copolymers may be any of random copolymers, block copolymers, and graft copolymers.

The number average molecular weight of the olefin wax is preferably 100 to 10,000, more preferably 1,000 to 6,000, and still more preferably 1,200 to 5,500 from the viewpoint of releasability.
The viscosity (140 ° C.) of the olefin wax is preferably 100 to 10,000 cps, more preferably 100 to 5,000 cps from the viewpoint of releasability.

The silicone oil preferably has a polyorganosiloxane structure, and may be, for example, a non-modified silicone oil such as dimethyl silicone oil, methylphenyl silicone oil, methyl hydrogen silicone oil, or the polyorganosiloxane structure. Examples thereof include a modified silicone oil in which various organic groups are introduced into a part of the side chain and / or one terminal part of the polyorganosiloxane structure, or both terminal parts of the polyorganosiloxane structure.
Examples of the modified silicone oil include alkyl-modified silicone oil, alkyl-aralkyl-modified silicone oil, polyether-modified silicone oil, fluorine-modified silicone oil, higher alkoxy-modified silicone oil, higher fatty acid-modified silicone oil, methylstyryl-modified silicone oil, and methylchlorine. Phenyl silicone oil, methyl hydrogenated silicone oil, amino modified silicone oil, epoxy modified silicone oil, carboxyl modified silicone oil, acrylic modified silicone oil, methacryl modified silicone oil, mercapto modified silicone oil, phenol modified silicone oil, carbinol modified silicone An oil etc. are mentioned.

  The kinematic viscosity (25 ° C.) of the silicone oil is preferably 10 to 100,000 cSt, more preferably 10 to 50,000 cSt, still more preferably 15 to 50,000 cSt, and particularly preferably 20 from the viewpoint of releasability. ~ 30,000 cSt. The kinematic viscosity can be measured by an Ubbelohde viscometer according to ASTM D445-46T (JIS 8803 is acceptable).

  The higher fatty acid is preferably a compound having 10 to 30 carbon atoms, and examples thereof include myristic acid, lauric acid, palmitic acid, stearic acid, and behenic acid.

  The higher fatty acid ester is preferably a partial ester or a total ester of a monovalent or polyhydric alcohol having 1 to 20 carbon atoms and a saturated fatty acid having 10 to 30 carbon atoms, such as stearic acid monoglyceride or stearic acid. Diglyceride, stearic acid triglyceride, stearic acid monosorbate, stearyl stearate, behenic acid monoglyceride, behenyl behenate, pentaerythritol monostearate, pentaerythritol tetrastearate, pentaerythritol tetrapelargonate, propylene glycol monostearate, stearyl stearate Rate, palmityl palmitate, butyl stearate, methyl laurate, isopropyl palmitate, biphenyl biphenate, sorbitan monostearate, 2 Ethylhexyl stearate and the like.

  Tm of the thermoplastic resin composition of the present invention is in the range of 0 ° C. to 100 ° C., preferably 10 ° C. to 80 ° C., more preferably 20 ° C. to 70 ° C., from the viewpoint of the effect of reducing squeaking noise and mechanical strength. It is in the range of ° C. As described above, Tm is obtained according to JIS K 7121-1987, but the number of endothermic patterns in the range of 0 ° C. to 100 ° C. is not limited to one and may be two or more. . Moreover, Tm seen in the range of 0 ° C. to 100 ° C. may be derived from the above component [C], and may be released from other thermoplastic resins blended as necessary, polyolefin wax or the like. It may be derived from an agent or the like.

  The composition of this invention can be manufactured by kneading | mixing a raw material component using an extruder, a Banbury mixer, a kneader, a roll, etc. In kneading, the raw material components may be kneaded all at once, or may be kneaded by a multistage addition method. The kneading temperature is preferably 230 ° C to 280 ° C, more preferably 240 ° C to 270 ° C.

  The molded product of the present invention comprises the above thermoplastic resin composition of the present invention, or the raw material components that will form its constituent components, an injection molding device, a sheet extrusion molding device, a profile extrusion molding device, a hollow molding device, It can be manufactured by processing with a known molding apparatus such as a compression molding apparatus, a vacuum molding apparatus, a foam molding apparatus, a blow molding apparatus, an injection compression molding apparatus, a gas assist molding apparatus, or a water assist molding apparatus. That is, the molded article of the present invention contains the thermoplastic resin composition of the present invention.

  When manufacturing a molded article using the molding apparatus, the molding temperature and the mold temperature are appropriately selected depending on the type of raw material components (including other thermoplastic resins and the like) used.

  The shape of the molded article of the present invention is not particularly limited, and can be plate-like, linear, spherical, annular, tubular, net-like or a modified form thereof, or an indefinite shape, and can be solid or hollow. Either is acceptable. Further, the molded product may be provided with a through hole, a groove, a concave portion, a convex portion, and the like at an arbitrary position according to the purpose and application.

The molded article of the present invention is not only susceptible to ductile fracture in a drop weight impact test at a low temperature of 0 ° C. or lower, for example, −30 ° C. It has the property that generation of squeaking noise (friction noise) is suppressed when it is in dynamic contact with the member. Since this property suppresses the occurrence of the stick-slip phenomenon when a molded article containing a thermoplastic resin composition having a Tm in the range of 0 ° C. to 100 ° C. and other members are dynamically contacted, It is considered that the generation of itching sound is reduced.
The other member may be the same as the thermoplastic resin composition of the present invention, or may be made of another material different from that. In the latter case, other thermoplastic resin compositions, cured resin compositions, crosslinked rubber (including vulcanized rubber), fiber aggregate (including wood), metal (including alloy), glass, ceramics, etc. These can be used alone or in combination of two or more.
Examples of other thermoplastic resin compositions include compositions containing the above component [A] or component [B], compositions containing polyvinyl chloride, polyolefin, PMMA, polystyrene, EVA, polyamide, polyester, polylactic acid, etc. It can be.
As the cured resin composition, a raw material composition containing a curable resin such as a phenol resin, an epoxy resin, a urea resin, a melamine resin, or an unsaturated polyester resin may be cured by heat, light, or the like. .
As the crosslinked rubber (vulcanized rubber), a crosslinked rubber composition obtained by using a raw material composition containing chloroprene rubber, polybutadiene rubber, ethylene / propylene rubber, synthetic rubber such as SEBS, SBS, SIS, natural rubber, etc. ( Vulcanized rubber composition) and the like.

1 to 6, 8 to 10, and 12 show examples (cross-sectional views) in which a composite is formed by combining two members. Of these, FIGS. 1 to 5, FIG. 8 to FIG. 10 and FIG. 12 are in contact with one member (10, 12, 14, 16 or 18) and the other member (20, 22, 24, 26 or 28). FIG. 6 shows a mode in which one member 10 and another member 20 are not in contact with each other (including partial adhesion). In the present invention, at least one of one member and the other member is made of the thermoplastic resin composition of the present invention.
FIG. 1 shows a mode in which one member 10 and another member 20 are adjacent to each other. FIGS. 2 and 3 show a mode in which one member 10 is inserted into a recess formed in another member 20. FIG. 4 is a mode in which another member 20 is inserted into a recess formed in one member 10. FIG. 5 is a mode in which another member 20 is disposed so as to be in close contact with the inner wall surface of one cylindrical member 10.
FIG. 6 shows a mode in which one member 10 and another member 20 are arranged with a predetermined gap. In such a case, one or both of them are moved or deformed by vibration, twist, impact, or the like. Thus, even if contact is made dynamically (surface contact, line contact or point contact), the generation of the squeaking noise is suppressed.

8, as shown in FIG. 7, a composite is formed using the member 12 having the convex portion 13 for snap-fitting the member 22 having the hole portion on one surface side and the other surface side, respectively. It is an aspect. For example, even if a load is applied to the composite in the directions of the arrows shown on the left and right sides of FIG. . The direction of the load is not limited to the direction of the arrow. FIG. 8 is an example of snap fitting with the rectangular convex portion 13 in the member 12 of FIG. 7, but the cross-sectional shape of the convex portion 13 and the shape of the hole portion in the member 22 are changed to press fit. It can also be used as an example.
FIG. 9 shows a composite in which the outer surface of the member 14 not shown in FIG. 7 and the inner surface of the member 24 are joined by a partial adhesive layer 25 formed using an adhesive. As an aspect similar to FIG. 9, a part of the outer surface of the member 14 may be welded to the member 24. The same applies to the case where the member 24 is made of a thermoplastic resin composition.
FIG. 10 shows that a part of the outer surface of the member 16 not shown in FIG. 7 and the inner surface of the member 26 are fixed and integrated with a bolt 27 using a through hole formed in both. It is a complex. In addition, things other than a bolt can also be used as a connection tool, and a screw, a pin, a screw, a rivet, a bush, a bracket, a hinge, a nail, etc. can be utilized.

Further, as shown in FIG. 11, FIG. 12 shows a projecting portion using members 18 each having a projecting portion 19 having a plate-like outer shape and a circular section in the vicinity of the center of both end faces in the longitudinal direction. 19 is inserted into the hole portion of the member 28 having the hole portion to form a composite. When the member 18 is rotated about the protrusion 19, the squeaking sound generated from the protrusion 19 and the inner surface of the hole in the member 28 is suppressed.
As can be seen from FIGS. 12A and 12B, since the member 28 includes a plurality of openings 29, the composite shown in FIG. 12 can be used, for example, when supplying or discharging gas in a desired direction. It has a function of adjusting the direction (angle). Therefore, for example, the member of FIG. 11 can be used as a fin in an air conditioner, an air purifier, a blower or the like, and is suitable as a member for an apparatus having the configuration shown in FIG.

  The molded article of the present invention is suitable for forming a composite material that is made of a member (other member) made of the same or other material and hardly generates a squeaking noise, according to the above-illustrated embodiment or an embodiment to which it is applied. is there. In particular, it is used as a shape body having a hole or a concave portion, and another member having a convex portion or the like is fitted into the hole portion or the concave portion to form a composite, or as a shape body having a convex portion, It is also a preferable aspect that a composite is formed by being inserted into another member having a hole or a recess. And since the brittle fracture is suppressed in the drop weight impact test at a low temperature of 0 ° C. or lower, for example, −30 ° C. and the material is easily ductile fracture, other materials are widely selected depending on the application. The molded product of the present invention is suitable as a member of a composite product that constitutes a vehicle, OA (office automation) equipment, home electrical appliance, electrical / electronic equipment, building material, and the like.

Hereinafter, specific examples of molded products will be shown.
Molded parts for vehicles include door trims, door linings, pillar garnishes, consoles, door pockets, ventilators, ducts, air conditioners, instrument visors, instrument panel upper garnishes, instrument panel garnishes, A / T indicators, on / off switches (slide parts, slides) Plate), grill front defroster, grill side defroster, lid cluster, cover intro, masks (mask switch, mask radio, etc.), glove box, pockets (pocket deck, pocket card, etc.), steering wheel horn pad, switch, Examples include a car navigation device casing.

Examples of molded products for office automation equipment include composite printers, inkjet printers, laser beam printers, copiers, fax machines, casings, structural members (movable parts, etc.), switches, and the like.
Examples of molded articles for electric / electronic devices include connectors, switches, relays, printed wiring boards, casings for electronic components, outlets, and the like.
Examples of the molded article for building materials include drawers arranged on desks, sorting shelves, desk lock parts, shelf doors, chair dampers, table folding leg movable parts, door opening / closing dampers, sliding door rails, curtain rails, and the like.

  Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded. In the following, “part” and “%” are based on mass unless otherwise specified.

1. Production Raw Materials The raw materials (resin component and polymer component) used for the production of the thermoplastic resin composition are as follows. The measurement of the graft ratio, intrinsic viscosity [η], etc. was performed according to the method described above.

1-1. Raw material [P]
As the polycarbonate resin (P1), polycarbonate “NOVAREX 7022PJ” (trade name) manufactured by Mitsubishi Engineering Plastics Co., Ltd. was used. The viscosity average molecular weight (Mv) is 22,000, and the MFR (temperature 240 ° C., load 98 N) is 9 g / 10 min.

1-2. Raw material [Q]
The raw material [Q] is rubber reinforced resins (Q1) to (Q5) containing rubbery polymer reinforced vinyl resins obtained by the following Synthesis Examples 1 to 5, all of which are diene rubbery polymers. Alternatively, a vinyl copolymer (acrylonitrile / styrene copolymer) containing a part composed of an acrylic rubber polymer and a structural unit derived from a vinyl cyanide compound (acrylonitrile) and a structural unit derived from an aromatic vinyl compound (styrene). And a resin mixture composed of an ungrafted vinyl copolymer (acrylonitrile / styrene copolymer). Synthesis Examples 1 to 4 are synthesis examples of a resin mixture mainly composed of a diene rubber polymer reinforced vinyl resin (diene graft resin), and Synthesis Example 5 is an acrylic rubber polymer reinforced vinyl resin. This is a synthesis example of a resin mixture mainly composed of (acrylic graft resin).

Synthesis Example 1 (Synthesis of raw material Q1)
In a glass flask equipped with a stirrer, in a nitrogen stream, 92 parts of ion-exchanged water, 0.3 part of potassium rosinate, 0.18 part of tert-dodecyl mercaptan, polybutadiene rubber having an average particle diameter of 300 nm (gel content: 80% ) 70 parts of latex containing 40 parts, 9.6 parts of styrene and 5.4 parts of acrylonitrile were accommodated and heated with stirring. When the internal temperature reached 38 ° C., a solution in which 0.2 parts of sodium pyrophosphate, 0.004 parts of ferrous sulfate heptahydrate and 0.25 parts of glucose were dissolved in 8 parts of ion-exchanged water was added. . Thereafter, 0.066 part of cumene hydroperoxide was added to initiate polymerization.
After polymerization for 1 hour, 21.6 parts of ion-exchanged water, 0.7 part of potassium rosinate, 36 parts of styrene, 9 parts of acrylonitrile, 0.12 part of tert-dodecyl mercaptan and 0.11 part of cumene hydroperoxide, Added continuously over 3 hours. Thereafter, 0.1 part of cumene hydroperoxide was added, and the polymerization was continued for another hour to complete the polymerization.
Next, an aqueous sulfuric acid solution was added to the latex containing the reaction product, and the resin component was coagulated and washed with water. Then, it dried and obtained rubber reinforced resin (Q1). The graft ratio of the diene rubber polymer reinforced vinyl resin contained in this resin (Q1) is 76%, and the cyan content in the vinyl copolymer part constituting this diene rubber polymer reinforced vinyl resin is cyan. The content ratio (average value) of the structural unit (mx) derived from the vinyl fluoride compound and the structural unit (my) derived from the aromatic vinyl compound is 24% and 76%, respectively, when the total of both is 100%. %, The content of ungrafted vinyl copolymer (hereinafter referred to as “acetone-soluble matter”) is 30%, and the intrinsic viscosity [η] of this acetone-soluble matter (30 ° C. in methyl ethyl ketone) Was 0.36 dl / g. In addition, Tm of this rubber reinforced resin (Q1) was not observed.

Synthesis example 2 (synthesis of raw material Q2)
In a glass flask equipped with a stirrer, in a nitrogen stream, 92 parts of ion-exchanged water, 0.3 part of potassium rosinate, 0.18 part of tert-dodecyl mercaptan, polybutadiene rubber having an average particle diameter of 300 nm (gel content: 80% ) 70 parts of latex containing 40 parts, 10.95 parts of styrene and 4.05 parts of acrylonitrile were accommodated and heated with stirring. When the internal temperature reached 38 ° C., a solution in which 0.2 parts of sodium pyrophosphate, 0.004 parts of ferrous sulfate heptahydrate and 0.25 parts of glucose were dissolved in 8 parts of ion-exchanged water was added. . Thereafter, 0.066 part of cumene hydroperoxide was added to initiate polymerization.
After polymerization for 1 hour, 21.6 parts of ion-exchanged water, 0.7 part of potassium rosinate, 36 parts of styrene, 9 parts of acrylonitrile, 0.12 part of tert-dodecyl mercaptan and 0.11 part of cumene hydroperoxide, Added continuously over 3 hours. Thereafter, 0.1 part of cumene hydroperoxide was added, and the polymerization was continued for another hour to complete the polymerization.
Next, an aqueous sulfuric acid solution was added to the latex containing the reaction product, and the resin component was coagulated and washed with water. Then, it dried and obtained rubber reinforced resin (Q2). The graft ratio of the diene rubber polymer reinforced vinyl resin contained in this resin (Q2) is 74%, and the cyan content in the vinyl copolymer part constituting this diene rubber polymer reinforced vinyl resin is cyan. The content ratio (average value) of the structural unit (mx) derived from the vinyl fluoride compound and the structural unit (my) derived from the aromatic vinyl compound is 22% and 78%, respectively, when the total of both is 100%. The acetone-soluble content was 30%, and the intrinsic viscosity [η] (30 ° C. in methyl ethyl ketone) of this acetone-soluble component was 0.35 dl / g. In addition, Tm of this rubber reinforced resin (Q2) was not observed.

Synthesis Example 3 (Synthesis of raw material Q3)
In a glass flask equipped with a stirrer, in a nitrogen stream, 92 parts of ion-exchanged water, 0.3 part of potassium rosinate, 0.18 part of tert-dodecyl mercaptan, polybutadiene rubber having an average particle diameter of 300 nm (gel content: 80% ) 70 parts of latex containing 40 parts, 8.25 parts of styrene and 6.75 parts of acrylonitrile were placed and heated with stirring. When the internal temperature reached 38 ° C., a solution in which 0.2 parts of sodium pyrophosphate, 0.004 parts of ferrous sulfate heptahydrate and 0.25 parts of glucose were dissolved in 8 parts of ion-exchanged water was added. . Thereafter, 0.066 part of cumene hydroperoxide was added to initiate polymerization.
After polymerization for 1 hour, 21.6 parts of ion-exchanged water, 0.7 parts of potassium rosinate, 24.75 parts of styrene, 20.25 parts of acrylonitrile, 0.13 part of tert-dodecyl mercaptan and 0. 3 cumene hydroperoxide. 1 part was added continuously over 3 hours. Thereafter, the polymerization was further continued for 1 hour to complete the polymerization.
Next, an aqueous sulfuric acid solution was added to the latex containing the reaction product, and the resin component was coagulated and washed with water. Thereafter, it was washed and neutralized with an aqueous potassium hydroxide solution, further washed with water, and then dried to obtain a rubber-reinforced resin (Q3). The graft ratio of the diene rubber polymer reinforced vinyl resin contained in this resin (Q3) is 80%. In the vinyl copolymer part constituting this diene rubber polymer reinforced vinyl resin, cyan The content ratio (average value) of the structural unit (mx) derived from the vinyl fluoride compound and the structural unit (my) derived from the aromatic vinyl compound is 45% and 55%, respectively, when the total of both is 100%. The acetone-soluble content was 28%, and the intrinsic viscosity [η] (30 ° C. in methyl ethyl ketone) of this acetone-soluble component was 0.40 dl / g. In addition, Tm of this rubber reinforced resin (Q3) was not observed.

Synthesis example 4 (synthesis of raw material Q4)
In a glass flask equipped with a stirrer, in a nitrogen stream, 92 parts of ion-exchanged water, 0.3 part of potassium rosinate, 0.18 part of tert-dodecyl mercaptan, polybutadiene rubber having an average particle diameter of 300 nm (gel content: 80% ) 70 parts of latex containing 40 parts, 12 parts of styrene and 3 parts of acrylonitrile were accommodated and heated with stirring. When the internal temperature reached 38 ° C., a solution in which 0.2 parts of sodium pyrophosphate, 0.004 parts of ferrous sulfate heptahydrate and 0.25 parts of glucose were dissolved in 8 parts of ion-exchanged water was added. . Thereafter, 0.066 part of cumene hydroperoxide was added to initiate polymerization.
After polymerization for 1 hour, 21.6 parts of ion-exchanged water, 0.7 part of potassium rosinate, 36 parts of styrene, 9 parts of acrylonitrile, 0.12 part of tert-dodecyl mercaptan and 0.11 part of cumene hydroperoxide, Added continuously over 3 hours. Thereafter, 0.1 part of cumene hydroperoxide was added, and the polymerization was continued for another hour to complete the polymerization.
Next, an aqueous sulfuric acid solution was added to the latex containing the reaction product, and the resin component was coagulated and washed with water. Then, it dried and obtained rubber reinforced resin (Q4). The graft ratio of the diene rubbery polymer reinforced vinyl resin contained in this resin (Q4) is 59%. In the vinyl copolymer part constituting this diene rubbery polymer reinforced vinyl resin, cyan The content ratio (average value) of the structural unit (mx) derived from the vinyl fluoride compound and the structural unit (my) derived from the aromatic vinyl compound is 20% and 80%, respectively, when the total of both is 100%. The acetone-soluble content was 36%, and the intrinsic viscosity [η] (30 ° C. in methyl ethyl ketone) of this acetone-soluble component was 0.32 dl / g. In addition, Tm of this rubber reinforced resin (Q4) was not observed.

Synthesis Example 5 (Synthesis of raw material Q5)
In a glass flask equipped with a stirrer, 85 parts of ion-exchanged water, 0.7 parts of potassium rosinate, 0.45 parts of sodium bicarbonate, 0.15 parts of sodium carbonate, sodium naphthalenesulfonate formalin condensation in a nitrogen stream 0.5 parts of salt and 0.03 parts of sodium dithionite were added. As a monomer, 5 parts of n-butyl acrylate was added, and the temperature was increased while stirring. Polymerization was started by adding 0.12 part of potassium persulfate at an internal temperature of 75 ° C.
After polymerizing for 1 hour, 0.06 part of potassium persulfate, 44.5 parts of n-butyl acrylate and 0.5 part of allyl methacrylate were continuously added over 3 hours, and the polymerization was further continued for 1 hour. Latex containing rubber was obtained. The latex is then cooled to 65 ° C., 33 parts of ion exchange water, 0.8 part of potassium rosinate, 0.07 part of tert-butyl hydroperoxide, 0.4 parts of sodium pyrophosphate, sulfuric acid A solution prepared by dissolving 0.01 part of ferrous heptahydrate and 0.3 part of glucose in 15 parts of ion-exchanged water, 9.6 parts of styrene, and 5.4 parts of acrylonitrile were added, and the temperature was raised to 75 ° C. After polymerization for 1 hour, 28 parts of styrene, 7 parts of acrylonitrile, 0.1 part of tert-dodecyl mercaptan and 0.2 part of tert-butyl hydroperoxide were continuously added over 4 hours. Then, the polymerization was continued for another hour to complete the polymerization.
Next, an aqueous magnesium sulfate solution was added to the latex containing the reaction product, and the resin component was coagulated and washed with water. Then, it dried and obtained rubber reinforced resin (Q5). The graft ratio of the acrylic rubber polymer reinforced vinyl resin contained in this resin (Q5) is 42%. In the vinyl copolymer part constituting this acrylic rubber polymer reinforced vinyl resin, cyan The content ratio (average value) of the structural unit (mx) derived from the vinyl fluoride compound and the structural unit (my) derived from the aromatic vinyl compound is 25% and 75%, respectively, when the total of both is 100%. %, The content of the ungrafted vinyl copolymer (acetone soluble component) is 29%, and the intrinsic viscosity [η] (30 ° C. in methyl ethyl ketone) of this acetone soluble component is 0.45 dl. / G. In addition, Tm of this rubber reinforced resin (Q5) was not observed.

1-3. Raw material [R]
The raw materials [R] are rubber reinforced resins (R1) to (R4) containing ethylene / α-olefin rubbery polymer reinforced vinyl resins obtained by Synthesis Examples 6 to 9 below. A vinyl copolymer (acrylonitrile, containing a part composed of an ethylene / α-olefin rubber polymer, a structural unit derived from a vinyl cyanide compound (acrylonitrile) and a structural unit derived from an aromatic vinyl compound (styrene) And a resin mixture composed of an ungrafted vinyl copolymer (acrylonitrile / styrene copolymer). As the ethylene / α-olefin rubbery polymer, the content ratios of ethylene units and propylene units are 78% and 22%, Tm is 40 ° C., and the glass transition temperature is −50 ° C. An ethylene / propylene copolymer rubber having a Mooney viscosity (ML _{1 + 4} , 100 ° C.) of 20 was used.

Synthesis Example 6 (Synthesis of raw material R1)
In a stainless steel autoclave equipped with a ribbon-type stirrer blade, an auxiliary agent continuous addition device, a thermometer, etc., 25 parts of ethylene / α-olefin rubber polymer, 9.6 parts of styrene, 5.4 parts of acrylonitrile, tert-dodecyl Mercaptan (0.5 part) and toluene (110 parts) were charged, the internal temperature was raised to 75 ° C., and the contents of the autoclave were stirred for 1 hour to obtain a uniform solution. Thereafter, 0.09 part of tert-butylperoxyisopropyl monocarbonate was added, the internal temperature was further raised, and after reaching 100 ° C., the polymerization reaction was carried out at a stirring speed of 100 rpm while maintaining this temperature. went. After polymerization for 1 hour, 48 parts of styrene, 12 parts of acrylonitrile, and 0.36 part of tert-butyl peroxyisopropyl monocarbonate were continuously added over 3 hours. From 4 hours after the start of the polymerization reaction, the reaction solution was heated to 120 ° C., and the reaction was further continued for 2 hours while maintaining this temperature to complete the polymerization reaction. The polymerization conversion rate was 97%. Thereafter, the reaction solution was cooled to 100 ° C., and 0.2 part of octadecyl-3- (3,5-di-tert-butyl-4-hydroxyphenol) -propionate was added. Next, the reaction mixture is extracted from the autoclave, unreacted substances and the solvent are distilled off by steam distillation, and the volatile matter is substantially degassed using an extruder with a 40 mmφ vent (cylinder temperature 220 ° C., vacuum degree 760 mmHg). Thus, a pellet made of a rubber reinforced resin (R1) containing an ethylene / α-olefin rubbery polymer reinforced vinyl resin was obtained. The graft ratio of the ethylene / α-olefin rubbery polymer reinforced vinyl resin contained in this resin (R1) is 50%, and the structural unit derived from the vinyl cyanide compound constituting the vinyl copolymer part ( nx) and the content ratio of the structural unit (ny) derived from the aromatic vinyl compound is 23% and 77%, respectively, when the total of both is 100%, derived from the ethylene / propylene copolymer rubber The ethylene / α-olefin rubber polymer part content was 25% (calculated from the polymerization prescription and polymerization conversion). The content of the ungrafted vinyl copolymer (hereinafter referred to as “acetone soluble component”) contained in the rubber-reinforced resin (R1) extracted with acetone is 63%. The intrinsic viscosity [η] of minutes (in methyl ethyl ketone, 30 ° C.) was 0.47 dl / g. Then, when Tm of rubber reinforced resin (R1) was measured using this pellet, it was 40 degreeC.

Synthesis Example 7 (Synthesis of raw material R2)
In a stainless steel autoclave equipped with a ribbon-type stirrer blade, auxiliary agent addition device, thermometer, etc., 25 parts of ethylene / α-olefin rubber polymer, 10.9 parts of styrene, 4.1 parts of acrylonitrile, tert-dodecyl Mercaptan (0.5 part) and toluene (110 parts) were charged, the internal temperature was raised to 75 ° C., and the contents of the autoclave were stirred for 1 hour to obtain a uniform solution. Thereafter, 0.09 part of tert-butylperoxyisopropyl monocarbonate was added, the internal temperature was further raised, and after reaching 100 ° C., the polymerization reaction was carried out at a stirring speed of 100 rpm while maintaining this temperature. went. After polymerization for 1 hour, 48 parts of styrene, 12 parts of acrylonitrile, and 0.36 part of tert-butyl peroxyisopropyl monocarbonate were continuously added over 3 hours. From 4 hours after the start of the polymerization reaction, the internal temperature was raised to 120 ° C., and the reaction was further continued for 2 hours while maintaining this temperature to complete the polymerization reaction. The polymerization conversion rate was 97%. Thereafter, the reaction solution was cooled to 100 ° C., and 0.2 part of octadecyl-3- (3,5-di-tert-butyl-4-hydroxyphenol) -propionate was added. Next, the reaction mixture is extracted from the autoclave, unreacted substances and the solvent are distilled off by steam distillation, and the volatile matter is substantially degassed by using an extruder with a 40 mmφ vent (cylinder temperature 220 ° C., vacuum degree 760 mmHg). Thus, a pellet made of a rubber reinforced resin (R2) containing an ethylene / α-olefin rubbery polymer reinforced vinyl resin was obtained. The graft ratio of the ethylene / α-olefin rubbery polymer reinforced vinyl resin contained in this resin (R2) is 48%, and the structural unit derived from the vinyl cyanide compound constituting the vinyl copolymer part ( nx) and the content ratio of the structural unit (ny) derived from the aromatic vinyl compound is 21% and 79%, respectively, when the total of both is 100%, derived from the ethylene / propylene copolymer rubber The ethylene / α-olefin rubber polymer part content was 25% (calculated from the polymerization prescription and polymerization conversion). The content of the ungrafted vinyl copolymer (acetone soluble component) contained in the rubber reinforced resin (R2) is 63%, and the intrinsic viscosity [η] of this acetone soluble component (30 in methyl ethyl ketone) C) was 0.46 dl / g. Then, when Tm of rubber reinforced resin (R2) was measured using this pellet, it was 40 degreeC.

Synthesis Example 8 (Synthesis of raw material R3)
In a stainless steel autoclave equipped with a ribbon-type stirrer blade, auxiliary agent addition device, thermometer, etc., 25 parts of ethylene / α-olefin rubber polymer, 8.2 parts of styrene, 6.8 parts of acrylonitrile, tert-dodecyl Mercaptan (0.5 part) and toluene (110 parts) were charged, the internal temperature was raised to 75 ° C., and the contents of the autoclave were stirred for 1 hour to obtain a uniform solution. Thereafter, 0.09 part of tert-butylperoxyisopropyl monocarbonate was added, the internal temperature was further raised, and after reaching 100 ° C., the polymerization reaction was carried out at a stirring speed of 100 rpm while maintaining this temperature. went. After polymerization for 1 hour, 33 parts of styrene, 27 parts of acrylonitrile and 0.36 part of tert-butylperoxyisopropyl monocarbonate were continuously added over 3 hours. From 4 hours after the start of the polymerization reaction, the reaction solution was heated to 120 ° C., and the reaction was further continued for 2 hours while maintaining this temperature to complete the polymerization reaction. The polymerization conversion rate was 97%. Thereafter, the reaction solution was cooled to 100 ° C., and 0.2 part of octadecyl-3- (3,5-di-tert-butyl-4-hydroxyphenol) -propionate was added. Next, the reaction mixture is extracted from the autoclave, unreacted substances and the solvent are distilled off by steam distillation, and the volatile matter is substantially degassed by using an extruder with a 40 mmφ vent (cylinder temperature 220 ° C., vacuum degree 760 mmHg). Thus, a pellet made of a rubber reinforced resin (R3) containing an ethylene / α-olefin rubbery polymer reinforced vinyl resin was obtained. The graft ratio of the ethylene / α-olefin rubbery polymer reinforced vinyl resin contained in this resin (R3) is 55%, and the structural unit derived from the vinyl cyanide compound constituting the vinyl copolymer part ( nx) and the content ratio of the structural unit (ny) derived from the aromatic vinyl compound is 45% and 55%, respectively, when the total of both is 100%, derived from the ethylene / propylene copolymer rubber The ethylene / α-olefin rubber polymer part content was 25% (calculated from the polymerization prescription and polymerization conversion). Further, the content of the ungrafted vinyl copolymer (acetone soluble component) contained in the rubber reinforced resin (R3) is 61%, and the intrinsic viscosity [η] of this acetone soluble component (30 in methyl ethyl ketone) C) was 0.49 dl / g. Then, when Tm of rubber reinforced resin (R3) was measured using this pellet, it was 40 degreeC.

Synthesis Example 9 (synthesis of raw material R4)
In a stainless steel autoclave equipped with a ribbon stirrer blade, an auxiliary agent continuous addition device, a thermometer, etc., 25 parts of an ethylene / α-olefin rubber polymer, 12 parts of styrene, 3 parts of acrylonitrile, tert-dodecyl mercaptan 0.5 And 110 parts of toluene were charged, the internal temperature was raised to 75 ° C., and the contents of the autoclave were stirred for 1 hour to obtain a uniform solution. Thereafter, 0.09 part of tert-butylperoxyisopropyl monocarbonate was added, the internal temperature was further raised, and after reaching 100 ° C., the polymerization reaction was carried out at a stirring speed of 100 rpm while maintaining this temperature. went. After polymerization for 1 hour, 48 parts of styrene, 12 parts of acrylonitrile, and 0.36 part of tert-butyl peroxyisopropyl monocarbonate were continuously added over 3 hours. From 4 hours after the start of the polymerization reaction, the reaction solution was heated to 120 ° C., and the reaction was further continued for 2 hours while maintaining this temperature to complete the polymerization reaction. The polymerization conversion rate was 97%. Thereafter, the reaction solution was cooled to 100 ° C., and 0.2 part of octadecyl-3- (3,5-di-tert-butyl-4-hydroxyphenol) -propionate was added. Next, the reaction mixture is extracted from the autoclave, unreacted substances and the solvent are distilled off by steam distillation, and the volatile matter is substantially degassed using an extruder with a 40 mmφ vent (cylinder temperature 220 ° C., vacuum degree 760 mmHg). Thus, a pellet made of a rubber reinforced resin (R4) containing an ethylene / α-olefin rubbery polymer reinforced vinyl resin was obtained. The graft ratio of the ethylene / α-olefin rubbery polymer reinforced vinyl resin contained in this resin (R4) is 45%, and the structural unit derived from the vinyl cyanide compound constituting the vinyl copolymer part ( nx) and the content ratio of the structural unit (ny) derived from the aromatic vinyl compound is 20% and 80%, respectively, when the total of both is 100%, derived from the ethylene / propylene copolymer rubber The ethylene / α-olefin rubber polymer part content was 25% (calculated from the polymerization prescription and polymerization conversion). Further, the content of the ungrafted vinyl copolymer (acetone-soluble component) contained in the rubber-reinforced resin (R4) is 64%, and the intrinsic viscosity [η] of this acetone-soluble component (30 in methyl ethyl ketone) C) was 0.44 dl / g. Then, when Tm of rubber reinforced resin (R4) was measured using this pellet, it was 40 degreeC.

1-4. Raw material [S]
As the raw material [S], resin mixtures (S1) to (S2) each comprising a plurality of acrylonitrile / styrene copolymers obtained in Synthesis Examples 10 and 11 below were used. Each raw material contains a plurality of acrylonitrile / styrene copolymers in which the content ratio of the structural units derived from the vinyl cyanide compound (acrylonitrile) is in a wide range.

Synthesis Example 10 (Synthesis of raw material S1)
A synthesis apparatus in which two jacketed polymerization reactors equipped with ribbon blades were connected was used. After purging nitrogen gas into each reactor, the first reactor was charged with a mixture of 76 parts of styrene, 24 parts of acrylonitrile and 25 parts of toluene, and 0.40 part of tert-dodecyl mercaptan as a molecular weight regulator. And a solution prepared by dissolving 0.1 part of 1,1′-azobis (cyclohexane-1-carbonitrile), which is a polymerization initiator, in 5 parts of toluene, are continuously supplied. Polymerization was carried out at 0 ° C. The average residence time of the supplied monomers and the like was 2 hours, and the polymerization conversion after 2 hours was 56%.
Next, the obtained polymer solution was continuously taken out by a pump provided outside the first reactor and supplied to the second reactor. The amount continuously taken out is the same as the amount supplied to the first reactor. In the second reactor, polymerization was carried out at 140 ° C. for 2 hours, and the polymerization conversion after 2 hours was 83%.
Thereafter, the polymer solution was recovered from the second reactor, and this was introduced into an extruder with a biaxial three-stage vent. Then, the unreacted monomer and toluene (polymerization solvent) were directly devolatilized, and an acrylonitrile / styrene copolymer (S1) including a plurality of acrylonitrile / styrene copolymers having different compositions was recovered.
The content (average value) of the structural unit (dx) derived from the vinyl cyanide compound constituting the acrylonitrile / styrene copolymer (S1) and the structural unit (dy) derived from the aromatic vinyl compound is the sum of both. Was 100%, and the intrinsic viscosity [η] (in methyl ethyl ketone, 30 ° C.) was 0.42 dl / g, respectively. In addition, Tm of this raw material S1 was not observed.

Synthesis Example 11 (Synthesis of raw material S2)
In this synthesis example, a first monomer consisting of a mixture of 0.1 part diisopropylbenzene hydroperoxide, 0.13 part tert-dodecyl mercaptan, 36.5 parts styrene and 13.5 parts acrylonitrile (at the start of synthesis, 1 source) and a second monomer consisting of a mixture of 0.1 part diisopropylbenzene hydroperoxide, 0.13 part tert-dodecyl mercaptan, 40 parts styrene and 10 parts acrylonitrile. Polymerization was carried out in the following manner.
A glass flask equipped with a stirrer was charged with 184 parts of ion-exchanged water, 2.0 parts of sodium dodecylbenzenesulfonate, and 0.5 part of sodium hydrogen carbonate in a nitrogen stream and heated with stirring. When the internal temperature reached 45 ° C., 0.06 part of ethylenediaminetetraacetic acid / tetrasodium / dihydrate, 0.002 part of ferrous sulfate heptahydrate and 0.12 part of sodium formaldehyde sulfoxylate were ionized. A solution dissolved in 16 parts of exchange water was added. Thereafter, the temperature was further raised, and when the internal temperature reached 50 ° C., continuous supply of the first monomer was performed from the first supply source to the reaction system at a rate of 33.3 parts per hour. Initiated and polymerized. Simultaneously with the supply of the first monomer, the second monomer was continuously supplied from the second supply source to the first supply source at a rate of 16.7 parts per hour. As a result, the composition of the monomer in the first supply source changed with time, and the composition of the monomer supplied from the first supply source to the reaction system was also changed sequentially. The time required to supply all the monomers is about 3 hours.
Simultaneously with the completion of the monomer supply, the polymerization was completed to obtain a latex containing a polymer mixture mainly composed of a plurality of acrylonitrile / styrene copolymers having different compositions.
Thereafter, a magnesium sulfate solution was added to the latex to coagulate the polymer and washed with water. Then, it dried and collect | recovered the acrylonitrile styrene copolymer (S2).
The content (average value) of the structural unit (dx) derived from the vinyl cyanide compound constituting the acrylonitrile / styrene copolymer (S2) and the structural unit (dy) derived from the aromatic vinyl compound is the sum of both. Was 100%, and the intrinsic viscosity [η] (in methyl ethyl ketone, 30 ° C.) was 0.51 dl / g, respectively. In addition, Tm of this raw material S2 was not observed.

Since the raw materials S1 and S2 obtained by the synthesis examples 10 and 11 may satisfy the constitution of the component [D], the copolymer having a structural unit (dx) content in the range of 5 to 60%. , A polymer (D-1) containing 5% or more and ₁ % or less of structural units (dx), and a polymer ( _b ) containing structural units (dx) of more than ₁ % and ₂ % or less. and D-2), the structural unit (dx), select _r 1 = 25 and _r 2 = 30 as it consists of a polymer containing 60% or less exceed _{2% r (D-3)} , the polymer The content ratio of each polymer when the total of (D-1), (D-2) and (D-3) was 100% was analyzed by the following method.

<Composition analysis of polymers (D-1), (D-2) and (D-3) contained in raw material [S]>
10 mg of each raw material [S] was put into 10 mL of a mixture of acetonitrile and 1,2-dichloroethane (volume ratio 6: 4), and shaken with a shaker at 25 ° C. for 2 to 3 hours. Thereafter, insoluble matters (contaminants) were removed, and the soluble matters were subjected to liquid chromatography. The apparatus was a super system controller “SC8020” (model name) manufactured by Tosoh Corporation, and “TSK Silica-60” (trade name) manufactured by Tosoh Corporation was used as a column. The sample was developed with a mobile phase having a gradient from an n-heptane / 1,2-dichloroethane mixture (volume ratio 7: 3) to an acetonitrile / 1,2-dichloroethane mixture (volume ratio 6: 4). The distribution of the composition was measured from the absorption value at a wavelength of 260 nm with a detector. The column temperature is 35 ° C. The determination of the polymer composition and distribution in the sample was made by preparing a calibration curve in advance using an acrylonitrile / styrene copolymer containing structural units of known types and contents.

2. Production and Evaluation of Thermoplastic Resin Composition Examples 1-7 and Comparative Examples 1-6
The raw materials [P], [Q], [R] and [S] were mixed at a ratio shown in Tables 1 and 2 using a Henschel mixer, and this mixture was then mixed with a twin screw extruder manufactured by Nippon Steel Co., Ltd. “TEX44αII” (model name) was supplied and melt-kneaded to obtain pellets made of the thermoplastic resin compositions (X1) to (X13). In addition, the cylinder preset temperature in the case of melt-kneading was 180 degreeC-260 degreeC. And Tm was measured about these thermoplastic resin compositions (X1)-(X13).
The raw material [Q] is composed of the rubbery polymer reinforced vinyl resins (B-1), (B-2) and (B-3) constituting the component [B] according to the present invention, depending on the synthesis method. May include some or all. Therefore, s ₁ = 25 and s ₂ = 30 are selected, and each of the rubbery polymer reinforced vinyl resins (B-1), (B-2), and (B-3) is defined as 100%. Method of combining ozonolysis and liquid chromatography for the ratio of rubber polymer reinforced vinyl resin and the ratio of structural units (mx) and (my) constituting vinyl copolymer part (BX) (above The values are shown in each table. The measurement conditions by liquid chromatography are the same as the above <Composition analysis of polymers (D-1), (D-2) and (D-3) contained in raw material [S]>.
In addition, the raw material [R] is composed of the ethylene / α-olefin rubbery polymer reinforced vinyl resin (C-1), (C-2) and the component [C] according to the present invention, depending on the synthesis method. Some or all of (C-3) may be included. Therefore, t ₁ = 25 and t ₂ = 30 are selected, and the total of ethylene / α-olefin rubbery polymer reinforced vinyl resins (C-1), (C-2) and (C-3) is set to 100. % Of each rubber polymer reinforced vinyl resin and the proportion of structural units (nx) and (ny) constituting the vinyl copolymer part (CX) The composition of the reaction system (structural units derived from vinyl monomers (raw materials) that are not chemically bonded to the ethylene / α-olefin rubber polymer) at regular intervals with continuous addition of the raw materials) Analyze vinyl copolymer (acrylonitrile / styrene copolymer) and unreacted raw materials) by liquid chromatography, etc., or use polymerization conversion rate, and show the values in each table It was. The measurement conditions by liquid chromatography are the same as the above <Composition analysis of polymers (D-1), (D-2) and (D-3) contained in raw material [S]>.
Furthermore, the rubber-reinforced resins (Q1) to (Q5) used as the raw material [Q] and the rubber-reinforced resins (R1) to (R4) used as the raw material [R] both have a structural unit content derived from acrylonitrile. Since it contains acrylonitrile / styrene copolymer in the range of 5 to 60%, using the graft ratio in each rubber polymer reinforced vinyl resin, the composition of acetone soluble component (acrylonitrile / styrene copolymer), etc., The content ratios of these components with respect to the total amount of the components [A], [B] and [C] according to the present invention were calculated, and the values are shown in each table. The raw material [Q] and raw material [R] containing an acetone-soluble component (acrylonitrile / styrene copolymer) and the raw material [S] which is an acrylonitrile / styrene copolymer correspond to other thermoplastic resins. However, some of the acrylonitrile / styrene copolymers may satisfy the constitution of the component [D], so that the content of the structural unit (dx) is in the range of 5 to 60%. About coalescence, since it is composed of the polymers (D-1), (D-2) and (D-3), r ₁ = 25 and r ₂ = 30 are selected, and the total of these is 100% The ratio of each polymer was analyzed by the following method. Moreover, the ratio with respect to the total amount of component [A], [B], and [C] was computed about this component [D].
For the raw materials [Q] and [R] in each table, the acetone-soluble content in the rubber-reinforced resins (Q1) to (Q5) and the acetone-soluble content in the rubber-reinforced resins (R1) to (R4) Is the component [D], that is, the acrylonitrile / styrene copolymer, the following analysis was performed on each acetone soluble component, and the polymer (D D) was set to r ₁ = 25 and r ₂ = 30. -1), the ratio of (D-2) and (D-3) was written together.

<Composition analysis of polymers (D-1), (D-2) and (D-3)>
10 mg of the component [D] contained in the thermoplastic resin composition was put into 10 mL of a mixture of acetonitrile and 1,2-dichloroethane (volume ratio 6: 4), and shaken at 25 ° C. for 2 to 3 hours using a shaker. I went. Thereafter, insoluble matters (contaminants) were removed, and the soluble matters were subjected to liquid chromatography. The apparatus was a super system controller “SC8020” (model name) manufactured by Tosoh Corporation, and “TSK Silica-60” (trade name) manufactured by Tosoh Corporation was used as a column. The sample was developed with a mobile phase having a gradient from an n-heptane / 1,2-dichloroethane mixture (volume ratio 7: 3) to an acetonitrile / 1,2-dichloroethane mixture (volume ratio 6: 4). The distribution of the composition was measured from the absorption value at a wavelength of 260 nm with a detector. The column temperature is 35 ° C. The determination of the polymer composition and distribution in the sample was made by preparing a calibration curve in advance using a styrene / acrylonitrile copolymer containing a structural unit of known type and content.

Thereafter, the following items were evaluated. In evaluating the composition, a physical property evaluation composition containing an additive corresponding to the evaluation item was prepared in advance and used.
<Composition for evaluating physical properties>
As described above, after supplying the raw materials [P], [Q], [R] and [S] to the Henschel mixer at the ratios shown in Tables 1 and 2, with respect to a total of 100 parts thereof, Tris (2,4-di-tert-butylphenyl) phosphite (trade name “ADK STAB 2112”, manufactured by ADEKA) as an antioxidant and 2- [1- (2- Hydroxy-3,5-di-tert-pentylphenyl) ethyl] -4,6-di-tert-pentylphenyl acrylate (trade name “Sumilyzer GS (F)”, manufactured by Sumitomo Chemical Co., Ltd.) 0.2 part was added. And mixed at 25 ° C. Next, this mixture was supplied to a twin-screw extruder “TEX44αII” (model name) manufactured by Nippon Steel Co., Ltd. and melt-kneaded to obtain a pellet (a composition for evaluating physical properties). In addition, the cylinder preset temperature in the case of melt-kneading was 180 degreeC-260 degreeC.
Thereafter, after sufficiently drying the pellets, an injection molding machine “EC60” (model name) or “J35AD” (model name) manufactured by Toshiba Machine Co., Ltd. with a cylinder set temperature of 240 ° C. to 260 ° C. and a mold temperature of 60 ° C. Name) was used to prepare a test piece suitable for the evaluation item.
(1) Impact resistance In accordance with ISO 179, Charpy impact strength was measured at a temperature of 23 ° C and -30 ° C. The unit is “kJ / m ² ”.
(2) Heat resistance According to ISO 75, the deflection temperature under load was measured at a bending stress of 1.8 MPa. The unit is “° C.”.
(3) Fluidity In accordance with ISO 1133, the melt flow rate was measured at a temperature of 240 ° C. and a load of 98N. The unit is “g / 10 minutes”.

(4) Surface impact resistance A test piece having a size of 80 mm × 55 mm × 2.4 mm was set on a high-speed impact tester “HITS-P10” (model name) manufactured by Shimadzu Corporation, and a falling weight test (weight Punch tip diameter: 12.7 mm, cradle hole diameter: 43 mm, test speed: 6.7 m / sec, test temperature: −30 ° C.), and the impact portion of the test piece was visually observed. The test was performed 5 times, and the total score was calculated from the observation results.
“3 points”: Ductile destruction and depression.
“2 points”: Ductile fracture and orientation cracking (cracks in the resin flow direction).
“1 point”: Brittle fracture occurred, and sharp pieces were scattered.
An average score was calculated from the total score, and surface impact resistance was determined according to the following criteria.
“A”: The average score is 2.8 or more.
“B”: The average score is 2.0 to 2.7.
“C”: The average score is 1.9 points or less.

(5) Itching sound evaluation I (abnormal noise risk index)
The thermoplastic resin composition was subjected to injection molding (cylinder temperature: 250 ° C., injection pressure: 50 MPa, mold temperature: 60 ° C.) using an injection molding machine “IS-170FA” (model name) manufactured by Toshiba Machine Co., Ltd., A plate-like molded product was obtained. Next, this molded article was cut using a disc saw, and two types of test pieces of 60 mm × 100 mm × 4 mm and 50 mm × 25 mm × 4 mm were cut out. Then, the edge part of the test piece was chamfered with the sandpaper of count # 100, the fine burr | flash was removed, and the test piece for evaluation of the squeaking sound of two large and small was produced.
Next, these squeak noise evaluation test pieces were left in an oven adjusted to 80 ° C. ± 5 ° C. for 300 hours, then taken out, left to stand at 25 ° C. for 24 hours, and subjected to heat aging (aging). I got a piece. Then, set two large and small masticatory sound evaluation test pieces on a stick slip tester “SSP-02” (model name) manufactured by Ziegler, and rub them together three times to obtain the noise risk index. It was measured. The measurement conditions are temperature: 23 ° C., humidity: 50% RH, load: 40 N, speed: 10 mm / second, and amplitude: 20 mm.
The smaller the abnormal noise risk index, the lower the risk of itching.

(6) Itching sound evaluation II (practical evaluation)
The thermoplastic resin composition was subjected to injection molding using an injection molding machine “J-100E” (model name) manufactured by Nippon Steel Works, and 10 ISO dumbbell test pieces were obtained. Of these, five test pieces were left in a gear oven adjusted to 80 ° C. for 400 hours.
Next, a heat-treated test piece and a non-heat-treated test piece were alternately overlapped to form a composite, and the both ends were twisted by hand to check for the occurrence of squeaking noise. This test was performed 5 times and judged based on the following criteria.
“◯”: In all five evaluations, the occurrence of itching was slight.
“Δ”: The case where the occurrence of the squeaking sound was remarkable was included in the five evaluations (except for the case where the sneezing sound was remarkable in all the five evaluations).
“×”: The occurrence of itching was significant in all five evaluations.

From Table 2, it is clear that: That is, Comparative Example 1 is an example in which the resins (C-1) and (C-2) constituting the component [C] according to the present invention are not included, and is inferior in impact resistance and surface impact resistance. The comparative example 2 is an example in which the resin (C-3) constituting the component [C] according to the present invention is not included, and is inferior in impact resistance and surface impact resistance. Comparative Example 3 is an example in which the resins (B-1) and (B-2) constituting the component [B] according to the present invention are not included, and is inferior in impact resistance and surface impact resistance. Comparative Example 4 is an example in which the resin (B-3) constituting Component [B] according to the present invention is not included, and is inferior in impact resistance and surface impact resistance. Since Comparative Example 5 did not contain the component [B] according to the present invention and Tm was not observed, the effect of reducing the squeaking noise could not be obtained. Moreover, since the comparative example 6 does not contain the component [A] which concerns on this invention, it is inferior to impact resistance, heat resistance, and surface impact resistance.
On the other hand, from Table 1, Examples 1 to 7, which are compositions having the configuration of the present invention, have an excellent balance of impact resistance, heat resistance, and surface impact resistance, and have a configuration in which squeaking noise is unlikely to occur. it is obvious.

3. Manufacture of molded products Example 8
The thermoplastic resin composition (X1) obtained in Example 1 was subjected to injection molding to obtain a member 12 shown in FIG. This member 12 has a rectangular parallelepiped shape (30 mm × 60 mm × 15 mm), and is a structure in which all of the lower surface side is opened in FIG. Further, a convex portion 13 having a square cross section is formed in the vicinity of the center on the other side. The thickness of the member 12 is set to 1.5 mm so that the member 12 can be deformed with one hand.
On the other hand, a member 22 shown in FIG. 8 was obtained by using ABS / PC alloy resin “Excelloy CK20” (trade name) manufactured by Techno Polymer Co., Ltd. This member 22 has a rectangular parallelepiped shape and is a structure in which one of the large-area surfaces is opened, and a through-hole having a square cross section near the center of each of the one side surface and the other surface side of the side surface. Is formed. The thickness of this member 22 was also set to 1.5 mm so that it could be deformed with one hand.
Next, the member 12 was accommodated in the concave portion of the member 22 and snap-fitted so that the convex portion 13 was fitted into the through hole of the member 22 to obtain a composite (see FIG. 8).
Thereafter, the composite was deformed and it was confirmed whether or not itchy sound was generated. That is, when it was deformed by applying a load in the direction of the arrow from the outside to the inside of the two convex portions 13 as shown in FIG.

Examples 9-14
A composite is produced in the same manner as in Example 8, except that the thermoplastic resin compositions (X2) to (X7) obtained in Examples 2 to 7 are used instead of the thermoplastic resin composition (X1). did. After that, generation of stagnation was confirmed, but no stagnation was confirmed in any of the examples.

Example 15
A composite is produced in the same manner as in Example 8, except that the materials of the member 12 and the member 22 prepared in Example 8 are changed to the ABS / PC alloy resin and the thermoplastic resin composition (X1), respectively. did. After that, the generation of stagnation was confirmed, but no stagnation was confirmed.

Example 16
A composite is produced in the same manner as in Example 8, except that the materials of the member 12 and the member 22 prepared in Example 8 are changed to the ABS / PC alloy resin and the thermoplastic resin composition (X2), respectively. did. After that, the generation of stagnation was confirmed, but no stagnation was confirmed.

Example 17
A composite was produced in the same manner as in Example 8, except that the materials of the member 12 and the member 22 produced in Example 8 were changed to the ABS / PC alloy resin and the thermoplastic resin composition (X3), respectively. did. After that, the generation of stagnation was confirmed, but no stagnation was confirmed.

Example 18
A composite is produced in the same manner as in Example 8, except that the materials of the member 12 and the member 22 prepared in Example 8 are changed to the ABS / PC alloy resin and the thermoplastic resin composition (X4), respectively. did. After that, the generation of stagnation was confirmed, but no stagnation was confirmed.

Example 19
A composite is produced in the same manner as in Example 8, except that the materials of the member 12 and the member 22 prepared in Example 8 are changed to the ABS / PC alloy resin and the thermoplastic resin composition (X5), respectively. did. After that, the generation of stagnation was confirmed, but no stagnation was confirmed.

Example 20
A composite is produced in the same manner as in Example 8, except that the materials of the member 12 and the member 22 prepared in Example 8 are changed to the ABS / PC alloy resin and the thermoplastic resin composition (X6), respectively. did. After that, the generation of stagnation was confirmed, but no stagnation was confirmed.

Example 21
A composite is produced in the same manner as in Example 8, except that the materials of the member 12 and the member 22 prepared in Example 8 are changed to the ABS / PC alloy resin and the thermoplastic resin composition (X7), respectively. did. After that, the generation of stagnation was confirmed, but no stagnation was confirmed.

Example 22
A composite was produced in the same manner as in Example 8, except that the material of the member 22 produced in Example 8 was changed to the thermoplastic resin composition (X1). After that, the generation of stagnation was confirmed, but no stagnation was confirmed.

Example 23
A composite was produced in the same manner as in Example 9, except that the material of the member 22 produced in Example 9 was changed to the thermoplastic resin composition (X2). After that, the generation of stagnation was confirmed, but no stagnation was confirmed.

Example 24
A composite was produced in the same manner as in Example 10 except that the material of the member 22 produced in Example 10 was changed to the thermoplastic resin composition (X3). After that, the generation of stagnation was confirmed, but no stagnation was confirmed.

Example 25
A composite was produced in the same manner as in Example 11 except that the material of the member 22 produced in Example 11 was changed to the thermoplastic resin composition (X4). After that, the generation of stagnation was confirmed, but no stagnation was confirmed.

Example 26
A composite was produced in the same manner as in Example 12 except that the material of the member 22 produced in Example 12 was changed to the thermoplastic resin composition (X5). After that, the generation of stagnation was confirmed, but no stagnation was confirmed.

Example 27
A composite was produced in the same manner as in Example 13 except that the material of the member 22 produced in Example 13 was changed to the thermoplastic resin composition (X6). After that, the generation of stagnation was confirmed, but no stagnation was confirmed.

Example 28
A composite was produced in the same manner as in Example 14 except that the material of the member 22 produced in Example 14 was changed to the thermoplastic resin composition (X7). After that, the generation of stagnation was confirmed, but no stagnation was confirmed.

  When the molded product containing the thermoplastic resin composition of the present invention has other members disposed around or in contact with the periphery thereof, one or both of them may be caused by vibration, rotation, twisting, sliding, impact, etc. Even if the two are moved or deformed to dynamically contact each other (surface contact, line contact or point contact), it is possible to reduce the squeaking sound that occurs. Accordingly, the molded article of the present invention is not only a member constituting a vehicle, OA equipment, home appliance, electrical / electronic equipment or building material, but also a member constituting a ship, daily goods, sports equipment, stationery, etc. You can also. In the present invention, a vehicle interior part is particularly preferable because brittle fracture is suppressed in a drop weight impact test at a low temperature of 0 ° C. or lower, for example, −30 ° C., and is easily ductile fracture. , Door lining, pillar garnish, console, console box, center panel, door pocket, ventilator, duct, air conditioner, meter visor, instrument panel upper garnish, instrument panel garnish, A / T indicator, on / off switch (slide part, slide plate) Suitable for switch bezels, grill front defrosters, grill side defrosters, lid clusters, cover introsers, masks (mask switches, mask radios, etc.), glove boxes and the like.

10, 12, 14, 16, 18: 1 member 13: convex part 19: protrusion part 20, 22, 24, 26, 28: other member 25: (partial) adhesive layer 27: bolt 29: opening part

Claims (13)

[A] polycarbonate resin,
[B] Polymer part derived from at least one rubber polymer selected from diene rubber polymer, acrylic rubber polymer and silicone rubber polymer, and structure derived from vinyl cyanide compound A rubbery polymer reinforced vinyl resin comprising a unit (mx) and a vinyl copolymer part containing a structural unit (my) derived from an aromatic vinyl compound,
And
[C] A polymer part derived from an ethylene / α-olefin rubber polymer, a structural unit (nx) derived from a vinyl cyanide compound, and a structural unit (ny) derived from an aromatic vinyl compound An ethylene / α-olefin rubbery polymer reinforced vinyl resin comprising a vinyl copolymer part,
In a thermoplastic resin composition containing
The rubbery polymer reinforced vinyl resin [B] includes (B-1) a rubbery material having a vinyl copolymer part in which the content of the structural unit (mx) is 5% by mass or more and s ₁ % by mass or less. Reinforced rubbery polymer comprising a polymer reinforced vinyl resin and (B-2) a vinyl copolymer part in which the content of the structural unit (mx) exceeds s ₁ % by mass and is s ₂ % by mass or less. A vinyl-based resin, and (B-3) a rubbery polymer reinforced vinyl-based resin including a vinyl-based copolymer portion in which the content of the structural unit (mx) exceeds s ₂ % by mass and is 60% by mass or less; And (s ₂ −s ₁ ) ≧ 3 (mass%), and the content ratio of the resin (B-1), (B-2) and (B-3) is the sum of these. When it is 100% by mass, it is 1 to 95% by mass, 1 to 98% by mass, and 0.1 to 90% by mass, respectively. A mixed resin,
The ethylene / α-olefin rubbery polymer reinforced vinyl resin [C] is (C-1) a vinyl copolymer having a content of the structural unit (nx) of 5 mass% or more and t ₁ mass% or less. An ethylene / α-olefin rubbery polymer reinforced vinyl resin provided with a coalescing part, and (C-2) vinyl having a content of the structural unit (nx) of more than t ₁ mass% and not more than t ₂ mass% ethylene · alpha-olefin rubbery polymer-reinforced vinyl-based resin comprising a system copolymer unit, (C-3) the content of the structural units (nx) is t ₂ mass% beyond 60 wt% or less An ethylene / α-olefin rubbery polymer reinforced vinyl resin having a vinyl copolymer portion, and (t ₂ -t ₁ ) ≧ 3 (% by mass), wherein the resin (C -1), the content ratio of (C-2) and (C-3) When the total is 100% by mass, the mixed resins are 1 to 95% by mass, 1 to 98% by mass, and 0.1 to 90% by mass, respectively.
A thermoplastic resin composition, wherein the thermoplastic resin composition has a melting point (JIS K 7121-1987) in the range of 0 ° C to 100 ° C. s ₁ is 10 to 30 mass%, _{s 2} is 15 to 45 wt%, _{t 1} is 10 to 30 mass%, heat of claim 1 _{t 2} is 15 to 45 wt% Plastic resin composition.   The content ratio of the polycarbonate resin [A], the rubber polymer reinforced vinyl resin [B], and the ethylene / α-olefin rubber polymer reinforced vinyl resin [C] is 100% of the total. The thermoplastic resin composition according to claim 1 or 2, wherein the thermoplastic resin composition is 5 to 99 mass%, 0.5 to 70 mass%, and 0.5 to 70 mass%, respectively.   The thermoplastic resin composition according to any one of claims 1 to 3, wherein a melting point (JIS K 7121-1987) of the ethylene / α-olefin rubbery polymer is in a range of 0 ° C to 100 ° C.   In the presence of at least one rubber polymer selected from diene rubber polymers, acrylic rubber polymers, and silicone rubber polymers, the rubber polymer reinforced vinyl resin [B] is cyanide. When the vinyl monomer containing a vinyl halide compound and an aromatic vinyl compound is graft-polymerized, the above-mentioned vinyl cyanide compound and the above-mentioned aromatic vinyl compound are used in a mass ratio of 5-25: 95-75 to 27-60: The resin obtained by graft polymerization while changing the charged amount to 73 to 40, or from 27 to 60:73 to 40 to 5 to 25:95 to 75. The thermoplastic resin composition according to one item.   The vinyl monomer containing the ethylene / α-olefin rubbery polymer reinforced vinyl resin [C] containing a vinyl cyanide compound and an aromatic vinyl compound in the presence of the ethylene / α-olefin rubbery polymer. In the graft polymerization, the vinyl cyanide compound and the aromatic vinyl compound are mixed in a mass ratio from 5 to 25:95 to 75 to 27 to 60:73 to 40, or from 27 to 60:73 to 40. The thermoplastic resin composition according to any one of claims 1 to 5, wherein the thermoplastic resin composition is a resin obtained by graft polymerization while changing a charge amount to 5 to 25:95 to 75.   A polymer portion derived from at least one rubber polymer selected from a diene rubber polymer, an acrylic rubber polymer, and a silicone rubber polymer; and the ethylene / α-olefin rubber heavy The content ratio with the polymer part derived from the coalescence is 10 to 90% by mass and 10 to 90% by mass, respectively, when these totals are 100% by mass. The thermoplastic resin composition described in 1. Furthermore, [D] a copolymer containing a structural unit (dx) derived from a vinyl cyanide compound and a structural unit (dy) derived from an aromatic vinyl compound (provided that the above components [B] and [C] Excluding)
The copolymer [D] comprises (D-1) a copolymer containing the structural unit (dx) at 5% by mass or more and ₁ % by mass or less, and (D-2) the structural unit (dx). , a copolymer comprising at _{r 2} mass% or less beyond the _{r 1} wt%, and a copolymer comprising (D-3) the structural units (dx), beyond the _{r 2} wt% to 60 wt% or less And (r ₂ -r ₁ ) ≧ 3 (mass%), and the content ratios of the copolymers (D-1), (D-2) and (D-3) are as follows: The thermoplastic resin composition according to any one of claims 1 to 7, which is 1 to 80 mass%, 3 to 80 mass%, and 1 to 80 mass%, respectively, when the total is 100 mass%. The thermoplastic resin composition according to claim 8 r ₂ is 15 to 45 mass%.   The thermoplastic resin composition according to any one of claims 1 to 9, wherein the thermoplastic resin composition is used for forming a molded article in which a squeaking sound generated when dynamically contacting with another member is reduced.   A molded article comprising the thermoplastic resin composition according to any one of claims 1 to 10.   The molded product according to claim 11, wherein the molded product is at least one of a member having a hole or a recess and a member used for fitting into the hole or the recess.   The molded article according to claim 11 or 12, which is used as a vehicle interior part.

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