WO2009119536A1 - 樹脂組成物およびその用途 - Google Patents
樹脂組成物およびその用途 Download PDFInfo
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- WO2009119536A1 WO2009119536A1 PCT/JP2009/055740 JP2009055740W WO2009119536A1 WO 2009119536 A1 WO2009119536 A1 WO 2009119536A1 JP 2009055740 W JP2009055740 W JP 2009055740W WO 2009119536 A1 WO2009119536 A1 WO 2009119536A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
Definitions
- the present invention relates to a resin composition and its use. More specifically, the present invention relates to a resin composition that contains a general-purpose engineering plastic, a polypropylene resin, and a specific modified propylene resin, and can be molded into a molded article such as an automobile part or a household appliance part, and its use.
- Polyamide is widely used as an engineering plastic because of its excellent heat resistance and chemical resistance.
- polyamide since polyamide has high water absorption, it has the disadvantages that the elastic modulus decreases due to water absorption and the dimensional stability deteriorates.
- polypropylene which is a nonpolar resin having low water absorption and excellent heat resistance
- compatibilizers are used because they are not mixed with each other simply by mixing them by kneading or the like.
- a modified polymer obtained by introducing an acid anhydride group into a copolymer of polyamide, polypropylene, polypropylene and / or vinyl aromatic compound and olefin, and a liquid olefin oligomer or vinyl aromatic compound containing an acid anhydride group There has been proposed an automobile connector formed by molding a polyamide composition containing a copolymer oligomer of olefin and olefin (see, for example, Patent Document 1).
- Patent Document 1 describes that the heat resistance and dimensional stability of the obtained polyamide composition are improved by adding a modified propylene resin and oligomer to polyamide and polypropylene.
- the polyamide composition described in Patent Document 1 contains an oligomer containing an acid anhydride group as an essential component, there is room for improvement in terms of strength and the like in the polyamide composition.
- thermoplastic polypropylene-polyamide molding material containing at least a polypropylene homopolymer and / or a polypropylene copolymer, a polyamide, and an olefinically unsaturated carboxylic acid and / or an olefinically unsaturated carboxylic acid derivative.
- a thermoplastic polypropylene-polyamide molding material containing at least a polypropylene homopolymer and / or a polypropylene copolymer, a polyamide, and an olefinically unsaturated carboxylic acid and / or an olefinically unsaturated carboxylic acid derivative.
- Patent Document 2 describes that the thermoplastic polypropylene-polyamide molding material has high toughness, rigidity and thermoforming stability. However, the thermoplastic polypropylene-polyamide molding material described in Patent Document 2 has room for improvement from the viewpoint of compatibility between polypropylene and polyamide.
- Patent Document 3 describes that the polyamide / polyolefin resin composition is excellent in impact resistance and weld strength.
- the modified polyolefin resin described in Patent Document 3 is a resin obtained by adding an acid anhydride to a mixture of a polypropylene resin and a polyethylene resin, and the resin lacks compatibility between the polyamide resin and the polypropylene resin. Therefore, there is room for improvement in terms of appearance and tensile elongation. JP-A-1-311580 JP-A-3-1099452 JP-A-4-252264
- the present invention uses a specific modified propylene resin as a compatibilizer between a general engineering plastic and a polypropylene resin, thereby reducing tensile strength and impact resistance without impairing the properties of the general engineering plastic or propylene resin. It aims at providing the resin composition which is excellent and is excellent in an external appearance, and its use.
- the resin composition of the present invention is (A) General-purpose engineering plastic 20 to 80% by weight, (B) Polypropylene resin 10 to 50% by weight and (C) Modified propylene resin 1 to 30% by weight (provided that (A), (B) and (C ) Is 100% by weight)
- the (C) modified propylene-based resin has a melting point (Tm) measured by differential scanning calorimetry (DSC) of polypropylene (C-1) of 0 to 40% by weight of 120 ° C. or higher, and a melting point measured by DSC.
- the (A) general-purpose engineering plastic is preferably at least one selected from the group consisting of polyamide, polyethylene terephthalate and polybutylene terephthalate.
- the (B) polypropylene resin is a propylene homopolymer or a copolymer of propylene and an ⁇ -olefin having 2 or 4 to 10 carbon atoms, and has a melting point (Tm) measured by differential scanning calorimetry (DSC). ) Is preferably 120 ° C. or higher.
- the heat of fusion ⁇ H of the copolymer of propylene and ⁇ -olefin (C-2) preferably exceeds 40 J / g.
- the propylene / ⁇ -olefin copolymer (C-2) is preferably a propylene / 1-butene copolymer, (1) containing 50 to 95 mol% of structural units derived from propylene and 5 to 50 mol% of structural units derived from 1-butene, (2)
- Mw / Mn obtained by gel permeation chromatography (GPC) is 3.0 or less, (3) It is more preferable that the melting point (Tm) measured by differential scanning calorimetry (DSC) is 110 ° C.
- Tm melting point
- M constituent unit content
- the (C) modified propylene-based resin is preferably one obtained by graft-modifying the resin composition (C-3) with an unsaturated carboxylic acid or a derivative thereof.
- the present invention includes a molded body obtained by molding the resin composition.
- the molded body is preferably an automobile part or a home appliance part.
- (A) general-purpose engineering plastic and (B) polypropylene resin are well compatibilized by using (C) modified propylene resin as a compatibilizing agent.
- the resin composition is excellent in tensile strength and impact resistance and excellent in appearance.
- the physical property which (A) general-purpose engineering plastic and (B) polypropylene resin originally have, for example, low water absorption, heat resistance, chemical resistance, and bending elasticity is not impaired. For this reason, the resin composition can be molded into molded articles such as automobiles and home appliances.
- the resin composition of the present invention comprises (A) 20 to 80% by weight of general-purpose engineering plastic, (B) 10 to 50% by weight of polypropylene resin, and (C) 1 to 30% by weight of modified propylene resin (provided that (A ), (B) and (C) is 100% by weight), and the (C) modified propylene resin has a melting point (Tm) measured by differential scanning calorimetry (DSC) of 120 ° C. or higher. Polypropylene (C-1) of 0 to 40% by weight, and a melting point (Tm) measured by DSC of less than 120 ° C.
- a resin composition comprising 60 to 100% by weight of a copolymer (C-2) (provided that the sum of (C-1) and (C-2) is 100% by weight) Characterized in that it is a resin obtained by modifying -3).
- the general-purpose engineering plastic used in the present invention is not particularly limited, but usually at least one selected from the group consisting of polyamide, polyethylene terephthalate and polybutylene terephthalate is used. In the present invention, general-purpose engineering plastics may be used alone or in combination of two or more.
- the polyamide used in the present invention is not particularly limited, and any of aliphatic polyamide, aromatic polyamide, and semi-aromatic polyamide may be used. Among these polyamides, it is preferable to use polyamide 6 that can be easily obtained from the market and has high heat resistance.
- the polyamide used in the present invention can be produced, for example, by ring-opening polymerization such as lactam.
- ring-opening polymerization such as lactam.
- ⁇ -caprolactam is preferably used because the polyamide 6 is obtained by the ring-opening polymerization.
- a method of producing by polycondensation of a dicarboxylic acid having 4 to 12 carbon atoms and a diamine having 2 to 13 carbon atoms can be mentioned.
- dicarboxylic acids used for producing polyamides include terephthalic acid, isophthalic acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid and dodecanedicarboxylic acid. These derivatives, such as esters, acid chlorides or amine salts, can also be used. These can be used individually by 1 type, and can also be used in combination of 2 or more type.
- typical diamines used for producing polyamides include p-phenylenediamine, m-phenylenediamine, hexamethylenediamine, octamethylenediamine and derivatives thereof. These can be used individually by 1 type, and can also be used in combination of 2 or more type.
- the melting point (Tm) of the polyamide measured by differential scanning calorimetry (DSC) is usually 175 to 330 ° C., preferably 210 to 330 ° C.
- the resin composition of the present invention containing the polyamide in the above range is preferable because of excellent heat resistance.
- the polyethylene terephthalate used in the present invention is a copolymer of ethylene glycol and terephthalic acid, and conventionally known polyethylene terephthalate can be used in the present invention.
- polyethylene terephthalate a commercially available product having a melting point (Tm) measured by differential scanning calorimetry (DSC) of 245 to 255 ° C. can be used.
- Tm melting point measured by differential scanning calorimetry
- the polybutylene terephthalate used in the present invention is a copolymer of 1,4-butanediol and terephthalic acid, and conventionally known polybutylene terephthalate can be used in the present invention.
- the (B) polypropylene-based resin used in the present invention is not particularly limited, but usually the melting point (Tm) measured by differential scanning calorimetry (DSC) is 120 ° C. or higher, preferably 120 to 170 ° C., more preferably Is from 120 to 160 ° C., particularly preferably from 130 to 155 ° C.
- the (B) polypropylene-based resin has crystallinity and has an isotactic index I.D. I. It is desirable to use polypropylene having a (boiling n-heptane insoluble component) of preferably 75% by weight or more, more preferably 75 to 99% by weight.
- the density of the (B) polypropylene resin is usually 890 to 920 kg / m 3 , and the melt flow rate (ASTM D1238, temperature 230 ° C.) is usually 0.1 to 20 g / 10 minutes, preferably 1 to 10 g / 10. Minutes.
- the melt flow rate is 1 g / 10 min or more, the resin composition of the present invention is excellent in moldability at the time of melt molding, and when it is 10 g / 10 min or less, the strength is not impaired in the resin composition. Therefore, it is preferable.
- the (B) polypropylene resin is preferably a propylene homopolymer or a copolymer of propylene and an ⁇ -olefin having 2 or 4 to 10 carbon atoms.
- the ⁇ -olefin having 2 or 4 to 10 carbon atoms in the copolymer Is usually 10 mol% or less, preferably less than 5 mol%.
- ⁇ -olefin examples include ethylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-decene, 4-methyl-1-pentene, and the like. These may be one kind or two or more kinds.
- the copolymer may be random polypropylene or block polypropylene, but random polypropylene is more preferable.
- Such (B) polypropylene resin can be manufactured using a solid titanium catalyst (Ziegler catalyst) component or a metallocene compound catalyst component.
- a commercially available product may be used as the (B) polypropylene-based resin. Examples of the commercially available product include “Prime Polypro F113G” (trade name; manufactured by Prime Polymer Co., Ltd.), “Prime Polypro CJ700” (trade name). ; Prime Polymer Co., Ltd.).
- the (C) modified propylene resin used in the present invention is 0 to 40% by weight of polypropylene (C-1) having a melting point (Tm) measured by differential scanning calorimetry (DSC) of 120 ° C. or higher, and measured by DSC. Resin containing 60 to 100% by weight of a copolymer (C-2) of propylene and an ⁇ -olefin having 2 or 4 to 10 carbon atoms whose melting point (Tm) is less than 120 ° C. or whose melting point peak is not observed by DSC This resin is obtained by modifying the composition (C-3).
- ((C-1) Polypropylene) As the (C-1) polypropylene, the (B) polypropylene resin except that the melting point (Tm) measured by differential scanning calorimetry (DSC) is 120 ° C. or more is an essential condition. Can be used.
- (C-2) Copolymer of propylene and ⁇ -olefin The copolymer of propylene and an ⁇ -olefin having 2 or 4 to 10 carbon atoms (C-2) (hereinafter also referred to as propylene / ⁇ -olefin copolymer (C-2)) is measured by DSC. There is no particular limitation except that the melting point (Tm) is less than 120 ° C. or no melting point peak is observed by DSC, and various copolymers can be used as the copolymer (C-2).
- Examples of the ⁇ -olefin having 2 or 4 to 10 carbon atoms include ethylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-decene, 4-methyl-1-pentene, etc. Is mentioned. Of these, 1-butene is preferred from the viewpoint of economy and compatibility with polypropylene. That is, the propylene / ⁇ -olefin copolymer (C-2) is preferably a propylene / 1-butene copolymer.
- the heat of fusion ( ⁇ H) of the propylene / ⁇ -olefin copolymer (C-2) is preferably more than 40 J / g, more preferably 41 J / g or more, particularly preferably 46 J / g or more, preferably Is 70 J / g or less, more preferably 60 J / g or less, and particularly preferably 50 J / g or less.
- the propylene / 1-butene copolymer preferably satisfies the following requirements (1) to (3), and more preferably satisfies the following requirement (4).
- (2) The molecular weight distribution (Mw / Mn) obtained by gel permeation chromatography (GPC) is 3.0 or less.
- the melting point (Tm) measured by differential scanning calorimetry (DSC) is 110 ° C. or lower, or no melting point peak is observed by DSC.
- Requirement (1) is that propylene / 1-butene copolymer contains 50 to 95 mol% of structural units derived from propylene, preferably 55 to 93 mol%, more preferably 60 to 90 mol%, particularly preferably 60 An amount of 5 to 50 mol%, preferably 7 to 45 mol%, more preferably 10 to 40 mol%, particularly preferably 21 to 40 mol% of structural units derived from 1-butene in an amount of ⁇ 79 mol% It is supposed to be contained in.
- (A) general-purpose engineering plastics and (B) polypropylene resins can be satisfactorily compatibilized, and tensile strength, impact resistance, and appearance It is preferable that the amount is 50 mol% or less because it is excellent in handling properties when producing the resin composition of the present invention.
- the propylene / 1-butene copolymer may contain a structural unit derived from an ⁇ -olefin other than propylene and 1-butene, for example, in an amount of 10 mol% or less, as long as the object of the present invention is not impaired. Good.
- the requirement (2) is that the molecular weight distribution (Mw / Mn) of the propylene / 1-butene copolymer determined by gel permeation chromatography (GPC) is 3.0 or less, preferably 2.0 to 3 0.0, more preferably 2.0 to 2.5.
- Mw / Mn in terms of polypropylene is within the above range, the content of low molecular weight components in the propylene / 1-butene copolymer can be reduced.
- Requirement (3) is that the melting point (Tm) measured with a differential scanning calorimeter of propylene / 1-butene copolymer is 110 ° C. or lower, or no melting point peak is observed by DSC, preferably the melting point is 50 to The temperature is 110 ° C., more preferably 60 to 100 ° C., still more preferably 65 to 90 ° C., particularly preferably 76 to 90 ° C.
- the melting point (Tm) is 50 ° C. or higher, the handleability when producing the resin composition of the present invention is excellent, and when it is 110 ° C. or lower, (A) general-purpose engineering plastic and (B) polypropylene resin It is particularly preferred because it can be satisfactorily compatibilized and a resin composition excellent in tensile strength, impact resistance and appearance can be obtained.
- the melting point was determined by using a differential scanning calorimeter (DSC). About 5 mg of a sample was packed in an aluminum pan, heated to 200 ° C., held at 200 ° C. for 5 minutes, and then ⁇ 40 ° C. at 10 ° C./min. It can be obtained from an endothermic curve when the temperature is raised to 10 ° C./min after cooling to ⁇ 40 ° C. for 5 minutes.
- DSC differential scanning calorimeter
- the propylene / 1-butene copolymer preferably further satisfies the following requirement (4), and more preferably satisfies any of the requirements (5) to (8).
- Requirement (4) includes the melting point (Tm) (° C.) of the propylene / 1-butene copolymer measured by a differential scanning calorimeter, the constituent unit content (M) (mol%) derived from 1-butene, -2.6M + 130 ⁇ Tm ⁇ ⁇ 2.3M + 155 It is assumed that the relational expression represented by
- Requirement (5) is that the melt flow rate (MFR) of propylene / 1-butene copolymer measured at a temperature of 230 ° C. and a load of 2.16 kg in accordance with ASTM D1238 is 0.01 to 1000 g / 10 minutes, preferably 0.1 to 100 g / 10 minutes, more preferably 1 to 20 g / 10 minutes.
- MFR melt flow rate
- the MFR is 0.01 g / 10 min or more, the moldability at the time of melt molding of the resin composition of the present invention is good, and when the MFR is 1000 g / 10 min or less, the mechanical properties of the resin composition are It is preferable without being damaged.
- Requirement (6) is that the parameter B value indicating the randomness of the copolymerization monomer chain distribution of the propylene / 1-butene copolymer is 1.0 to 1.5, preferably 1.0 to 1.3, more preferably Is assumed to be 1.0 to 1.2.
- the parameter B value is proposed by Coleman et al. (BDCole-man and TGFox, J. Polym. Sci., Al, 3183 (1963)) and is defined as follows.
- B P 12 / (2P 1 ⁇ P 2 )
- P 1 and P 2 are the first monomer content and the second monomer content fraction, respectively
- P 12 is the ratio of the (first monomer)-(second monomer) linkage in all the bimolecular linkages.
- the B value is in accordance with Bernoulli statistics when 1, and the copolymer is block-like when B ⁇ 1, and is alternating when B> 1.
- Requirement (7) is the degree of crystallinity (C) [%] of propylene / 1-butene copolymer measured by X-ray diffraction method and the content of structural unit (M) [mol%] derived from 1-butene. The relationship between the two values satisfies C ⁇ ⁇ 1.5M + 75.
- the crystallinity (C) of the propylene / 1-butene copolymer is usually 65% or less, preferably 15 to 65%, more preferably 20 to 60%.
- the degree of crystallinity (C) is 15% or more, the handleability when producing the resin composition of the present invention is excellent.
- (B) It is preferable because a resin composition excellent in tensile strength, impact resistance, and appearance can be obtained because the (B) polypropylene resin can be satisfactorily compatibilized.
- Requirement (8) is that propylene / 1-butene copolymer is composed of (i) a triple chain of structural units derived from head-to-tail bonded propylene, or (ii) a structural unit derived from head-to-tail bonded propylene and butene. And a side chain methyl group of the structural unit derived from propylene of the second unit in the third chain, wherein the third unit includes a structural unit derived from propylene and the structural unit derived from propylene in the second unit.
- the total area of the peak appearing in 19.5 to 21.9 ppm is taken as 100%, and 21.0 to The area of the peak appearing at 21.9 ppm is 90% or more, preferably 92% or more, more preferably 94% or more.
- the peak area is within the above range, the content of the low melting point component having low stereoregularity can be reduced.
- the stereoregularity of the propylene / 1-butene copolymer according to the present invention can be evaluated by triad tacticity (mm fraction).
- mm fraction triad tacticity
- this mm fraction is determined by the branching of the methyl group when the three head-to-tail bonded propylene unit chains existing in the polymer chain are represented by a surface zigzag structure. It is defined as the proportion of the same direction and is determined from the 13 C-NMR spectrum as follows.
- this mm fraction is determined from a 13 C-NMR spectrum, specifically, (i) three chains including propylene units present in the polymer chain, and (ii) The mm fraction is measured for a propylene unit / ⁇ -olefin unit triple chain composed of a propylene unit and an ⁇ -olefin unit bonded head-to-tail and the second unit being a propylene unit.
- the mm fraction is determined from the peak intensity of the side chain methyl group of the second unit (propylene unit) in these three chains (i) and (ii). This will be described in detail below.
- the 13 C-NMR spectrum of the propylene / 1-butene copolymer was completely dissolved in hexachlorobutadiene containing a small amount of deuterated benzene using the propylene / 1-butene copolymer as a lock solvent in a sample tube. It is measured at 120 ° C. by the proton complete decoupling method. Measurement conditions, a flip angle was 45 °, the pulse interval 3.4T 1 or more (T 1 is the longest value among spin-lattice relaxation time of methyl groups) and.
- the methyl carbon region (about 19.5 to 21.9 ppm) in which the side chain methyl group of the propylene unit is observed is It is classified into 1 peak region (about 21.0 to 21.9 ppm), 2nd peak region (about 20.2 to 21.0 ppm), and 3rd peak region (about 19.5 to 20.2 ppm).
- P represents a unit derived from propylene
- B represents a unit derived from an ⁇ -olefin such as butene.
- ⁇ -olefin such as butene.
- methyl groups for PPP mm
- PPP mr
- PPP rr
- the direction is illustrated below in a surface zigzag structure.
- the mm, mr, and rr bonds of the three-chain (PPB, BPB) containing ⁇ -olefin units conform to this PPP.
- the methyl group of the second unit (propylene unit) in the mm-bonded PPP, PPB, BPB3 chain resonates.
- the methyl group of the second unit (propylene unit) in the mr-bonded PPP, PPB, BPB3 chain and the methyl group of the second unit (propylene unit) in the rr-bonded PPB, BPB3 chain are resonant. To do.
- the triad tacticity (mm fraction) of the propylene-based elastomer consists of (i) three-chain propylene units bonded to the head-to-tail, or (ii) propylene units bonded to the head-to-tail and an ⁇ -olefin unit, and Propylene / ⁇ -olefin 3 chain containing propylene unit in the second unit, and 13 C-NMR spectrum (hexachlorobutadiene solution, tetramethylsilane for the side chain methyl group of the second unit propylene unit in the 3 chain)
- the ratio (percentage) of the peak area appearing in 21.0-21.9ppm (first region) Is obtained from the following equation.
- the mm fraction thus determined is usually 90% or more, preferably 92% or more, more preferably 94% or more.
- the peak area based on the methyl group C can be obtained from the peak area of the adjacent methine group (resonance at around 31.3 ppm).
- the peak area based on the methyl group D can be obtained from 1/2 of the sum of the peak areas of the peaks based on the ⁇ methylene carbon of the structure (iv) (resonance at resonance around 34.3 ppm and around 34.5 ppm).
- the peak area based on the methyl group D ′ can be determined from the area of the peak (resonance at around 33.3 ppm) based on the methine group adjacent to the methyl group of the structure (v) methyl group E ′.
- the peak area based on the methyl group E can be obtained from the peak area of the adjacent methine carbon (resonance at around 33.7 ppm), and the peak area based on the methyl group E ′ is calculated at the adjacent methine carbon (around 33.3 ppm). Resonance) peak area.
- the peak area of the methyl group based on the head-to-tail three-linked propylene units (i) and (ii) can be obtained.
- the mm fraction can be determined according to the above formula.
- Each carbon peak in the spectrum can be assigned with reference to literature (Polymer, 30, 1350 (1989)).
- Such a propylene / ⁇ -olefin copolymer (C-2), preferably a propylene / 1-butene copolymer, contains propylene and an ⁇ -olefin having 2 or 4 to 10 carbon atoms, preferably 1-butene, If necessary, a small amount of other olefins can be suitably obtained by copolymerization in the presence of a Ziegler catalyst or a catalyst containing a metallocene compound.
- a metallocene compound catalyst component for example, WO2004 / 088775 or WO01 / 27124 It can be produced by the method described in the publication.
- the propylene / ⁇ -olefin copolymer (C-2) used in the present invention contains propylene in the presence of a catalyst containing a transition metal compound (1a) represented by the following general formula (1a). It is desirable to be obtained by copolymerization of olefin and ⁇ -olefin.
- the catalyst containing the transition metal compound (1a) comprises (2a) an organometallic compound, (2b) an organoaluminum oxy compound, and (2c) a compound that reacts with the transition metal compound (1a) to form an ion pair. It is desirable that the catalyst contains at least one compound selected from the group together with the transition metal compound (1a).
- R 1 and R 3 are hydrogen, and R 2 and R 4 are selected from a hydrocarbon group and a silicon-containing group, and may be the same or different.
- R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 and R 14 are selected from hydrogen, a hydrocarbon group, and a silicon-containing group, and may be the same or different, and R 5 to R 12 R 13 and R 14 may be the same as or different from each other, and may be bonded to each other to form a ring, and M is the fourth.
- a transition metal, Y is a carbon atom
- Q may be selected from the same or different combinations from halogens, hydrocarbon groups, anionic ligands or neutral ligands capable of coordinating with lone pairs, j Is an integer from 1 to 4.
- hydrocarbon group include methyl group, ethyl group, n-propyl group, allyl group, n-butyl group, n-pentyl group, n-hexyl group, n-heptyl group, n-octyl group, and n-nonyl.
- Group linear hydrocarbon group such as n-decanyl group; isopropyl group, tert-butyl group, amyl group, 3-methylpentyl group, 1,1-diethylpropyl group, 1,1-dimethylbutyl group, 1- Branched hydrocarbon groups such as methyl-1-propylbutyl, 1,1-propylbutyl, 1,1-dimethyl-2-methylpropyl, 1-methyl-1-isopropyl-2-methylpropyl; cyclopentyl Group, cyclohexyl group, cycloheptyl group, cyclooctyl group, norbornyl group, adamantyl group and other cyclic saturated hydrocarbon groups; phenyl group, tolyl group, naphthyl group, biphenyl Cyclic unsaturated hydrocarbon groups such as benzene, phenanthryl and anthracenyl groups; saturated hydrocarbon groups substituted by cyclic unsaturated hydrocarbon groups
- Examples of the silicon-containing group include a trimethylsilyl group, a triethylsilyl group, a dimethylphenylsilyl group, a diphenylmethylsilyl group, and a triphenylsilyl group.
- R 5 to R 12 may be bonded to each other to form a ring.
- substituted fluorenyl groups include benzofluorenyl group, dibenzofluorenyl group, octahydrodibenzofluorenyl group, octamethyloctahydrodibenzofluorenyl group, octamethyltetrahydrodicyclopentafluorenyl group, etc. Can be mentioned.
- R 13 and R 14 may be the same or different, and may be bonded to each other to form a ring.
- R 2 and R 4 substituted on the cyclopentadienyl ring are preferably hydrocarbon groups having 1 to 20 carbon atoms.
- the hydrocarbon group having 1 to 20 carbon atoms include the aforementioned hydrocarbon groups.
- R 2 is more preferably a bulky substituent such as a tert-butyl group, an adamantyl group, or a triphenylmethyl group
- R 4 is more preferable than R 2 such as a methyl group, an ethyl group, or an n-propyl group. It is more preferably a sterically small substituent.
- the term “sterically small” as used herein refers to the volume occupied by the substituent.
- any two or more of R 6 , R 7 , R 10 and R 11 are hydrocarbon groups having 1 to 20 carbon atoms. It is preferable. Examples of the hydrocarbon group having 1 to 20 carbon atoms include the aforementioned hydrocarbon groups.
- the fluorene ring is preferably bilaterally symmetrical, that is, R 6 and R 11 and R 7 and R 10 are the same group. Among such preferred embodiments, R 6 and R 7 form an aliphatic ring (AR-1), and R 10 and R 11 are the same aliphatic ring (AR-1). The case where (AR-2) is formed is also included.
- crosslinks a cyclopentadienyl ring and a fluorenyl ring is a carbon atom.
- M is a Group 4 transition metal, and specific examples thereof include Ti, Zr, and Hf.
- Q is selected from the same or different combinations from halogen, a hydrocarbon group, an anionic ligand, or a neutral ligand capable of coordinating with a lone pair of electrons.
- j is an integer of 1 to 4, and when j is 2 or more, Qs may be the same or different from each other.
- halogen include fluorine, chlorine, bromine and iodine
- hydrocarbon group include the same as described above.
- anionic ligand include alkoxy groups such as methoxy, tert-butoxy and phenoxy, carboxylate groups such as acetate and benzoate, and sulfonate groups such as mesylate and tosylate.
- transition metal compound (1a) examples include dimethylmethylene (3-tert-butyl-5-methylcyclopentadienyl) fluorenylzirconium dichloride, isopropylidene (3-tert-butyl-5-methylcyclopenta).
- the catalyst suitably used for producing the propylene / ⁇ -olefin copolymer (C-2) used in the present invention includes (2a) an organometallic compound, (2b) together with the above-mentioned transition metal compound (1a). And (2c) at least one compound selected from the group consisting of compounds that react with the transition metal compound (1a) to form ion pairs.
- These (2a), (2b), and (2c) compounds are not particularly limited, but are preferably compounds described in WO2004 / 088775 or WO01 / 27124, and examples thereof include the following. Can be mentioned.
- organometallic compound the following Group 1, 2 and Group 12, 13 organometallic compounds are used.
- Specific examples of such compounds include trimethylaluminum, triethylaluminum, triisobutylaluminum, diisobutylaluminum hydride and the like.
- M 2 AlR a 4 (Wherein M 2 represents Li, Na or K, and R a represents a hydrocarbon group having 1 to 15 carbon atoms, preferably 1 to 4 carbon atoms). Alkylates. Examples of such a compound include LiAl (C 2 H 5 ) 4 and LiAl (C 7 H 15 ) 4 .
- R a and R b may be the same or different from each other, and each represents a hydrocarbon group having 1 to 15, preferably 1 to 4 carbon atoms, and M 3 is Mg, Zn or Cd)
- organometallic compounds (2a) organoaluminum compounds are preferred. Moreover, such an organometallic compound (2a) may be used individually by 1 type, and may be used in combination of 2 or more type.
- the organoaluminum oxy compound may be a conventionally known aluminoxane or a benzene-insoluble organoaluminum oxy compound as exemplified in JP-A-2-78687.
- a conventionally well-known aluminoxane can be manufactured, for example with the following method, and is normally obtained as a solution of a hydrocarbon solvent.
- An organoaluminum compound such as trialkylaluminum is added to a hydrocarbon medium suspension and the adsorbed water or crystal water reacts with the organoaluminum compound.
- the aluminoxane may contain a small amount of an organometallic component.
- the solvent or unreacted organoaluminum compound may be removed by distillation from the recovered aluminoxane solution, and the obtained aluminoxane may be redissolved in a solvent or suspended in a poor solvent for aluminoxane.
- Specific examples of the organoaluminum compound used in the preparation of the aluminoxane include the same organoaluminum compounds as those exemplified as the organoaluminum compound belonging to the above (2a-1). Of these, trialkylaluminum and tricycloalkylaluminum are preferable, and trimethylaluminum is particularly preferable.
- the above organoaluminum compounds are used singly or in combination of two or more.
- an Al component dissolved in benzene at 60 ° C. is usually 10% or less, preferably 5% or less, particularly preferably 2% or less in terms of Al atom, that is, benzene Those that are insoluble or sparingly soluble are preferred.
- These organoaluminum oxy compounds (2b) are used singly or in combination of two or more.
- Examples of compounds that react with the transition metal compound (1a) to form ion pairs include JP-A-1-501950, JP-A-1-502036, JP-A-3-179005, and JP-A-3- And Lewis acids, ionic compounds, borane compounds and carborane compounds described in JP-A No. 179006, JP-A-3-207703, JP-A-3-207704, USP-5321106, and the like. Furthermore, heteropoly compounds and isopoly compounds can also be mentioned. Such a compound of (2c) is used individually by 1 type or in combination of 2 or more types.
- the copolymer (C-2) used in the present invention when a catalyst is used in combination with the transition metal compound (1a) and an organoaluminum oxy compound (2b) such as methylaluminoxane.
- the copolymer (C-2) can be obtained with a high polymerization activity.
- the polymerization catalyst used in the production of the propylene / ⁇ -olefin copolymer (C-2) used in the present invention may be one using a carrier if necessary, and other promoter components. May be included.
- Such a catalyst may be prepared by mixing each component in advance or by supporting it on a carrier, or may be used by adding each component simultaneously or sequentially to the polymerization system.
- the propylene / ⁇ -olefin copolymer (C-2) used in the present invention is preferably propylene and an ⁇ -olefin having 2 or 4 to 10 carbon atoms, particularly preferably in the presence of the above-mentioned catalyst. Is obtained by copolymerizing 1-butene with a small amount of other olefins if necessary.
- each monomer may be used in such an amount that the amount of each constituent unit in the produced propylene / ⁇ -olefin copolymer (C-2) becomes a desired ratio.
- propylene / ⁇ The molar ratio of olefin is 50/50 to 95/5, preferably 55/45 to 93/7, more preferably 60/40 to 90/10.
- the copolymerization conditions are not particularly limited.
- the polymerization temperature is usually in the range of ⁇ 50 to + 200 ° C., preferably 0 to 170 ° C.
- the polymerization pressure is usually normal pressure to 10 MPa gauge pressure, preferably normal pressure. Pressure to 5 MPa gauge pressure.
- the polymerization reaction can be carried out in any of batch, semi-continuous and continuous methods. Furthermore, the polymerization can be carried out in two or more stages having different reaction conditions.
- the molecular weight of the propylene / ⁇ -olefin copolymer (C-2) can also be adjusted by allowing hydrogen to be present in the polymerization system or changing the polymerization temperature, and (2a), (2b) ) Or (2c). When hydrogen is added, the amount is suitably about 0.001 to 100 NL per kg of monomer.
- the resin composition (C-3) used in the present invention comprises 0 to 40% by weight of the polypropylene (C-1) and 60 to 100% by weight of the propylene / ⁇ -olefin copolymer (C-2). It is a resin composition containing.
- polypropylene (C-1) is 0 to 40% by weight, preferably 0 to 35% by weight, more preferably 0 to 30% by weight in 100% by weight of the resin composition. %, More preferably 5 to 30% by weight, and the propylene / ⁇ -olefin copolymer (C-2) is 60 to 100% by weight, preferably 65 to 100% by weight, more preferably 70 to 100% by weight. More preferably, it is contained in an amount of 70 to 95% by weight.
- the resin composition of the present invention containing (A) a general-purpose engineering plastic, (B) a polypropylene resin, and (C) a modified propylene resin. It is preferable because of excellent tensile strength, impact resistance, and appearance, and excellent continuous productivity when the resin composition (C-3) is modified using an extruder described later.
- any conventionally known method can be employed.
- a method of mixing with a mixer such as a V-type blender, a ribbon blender, or a Henschel mixer.
- a method of kneading with a kneader such as an extruder, mixing roll, Banbury mixer, kneader, etc., or a single method, and adopting polypropylene (C-1) and a propylene / ⁇ -olefin copolymer (C— 2) may be mixed.
- the resin composition (C-3) obtained by mixing may be once modified into pellets or granules using an extruder or the like and then modified to obtain (C) a modified propylene resin. Alternatively, modification may be performed as it is to obtain (C) a modified propylene resin.
- the (C) modified propylene resin used in the present invention is a resin obtained by modifying the resin composition (C-3).
- the method for modifying the resin composition (C-3) is usually performed by grafting a polar monomer to the resin composition (C-3).
- Polar monomer examples include a hydroxyl group-containing ethylenically unsaturated compound, an amino group-containing ethylenically unsaturated compound, an epoxy group-containing ethylenically unsaturated compound, an unsaturated carboxylic acid, or a derivative thereof.
- hydroxyl group-containing ethylenically unsaturated compound examples include hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 2-hydroxy-3-phenoxy-propyl (meth) acrylate, 3-chloro-2-hydroxypropyl (meth) acrylate, glycerin mono (meth) acrylate, pentaerythritol mono (meth) acrylate, trimethylolpropane mono (meth) acrylate, tetramethylolethane mono (meth) acrylate, butanediol mono ( (Meth) acrylate, polyethylene glycol mono (meth) acrylate, 2- (6-hydroxyhexanoyloxy) ethyl acrylate and other (meth) acrylic acid esters, 10-undecen-1-ol, 1-octen-3-o , 2-methanol norbornene, hydroxyst
- amino group-containing ethylenically unsaturated compound examples include vinyl monomers having at least one amino group or substituted amino group represented by the following formula.
- R 1 is a hydrogen atom, a methyl group or an ethyl group
- R 2 is a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, preferably 1 to 8 carbon atoms, preferably 6 to 12 carbon atoms, preferably A cycloalkyl group of 6 to 8.
- the above alkyl group and cycloalkyl group may further have a substituent.
- amino group-containing ethylenically unsaturated compounds include aminoethyl (meth) acrylate, propylaminoethyl (meth) acrylate, dimethylaminoethyl methacrylate, aminopropyl (meth) acrylate, and phenylamino methacrylate.
- Alkyl ester derivatives of acrylic acid or methacrylic acid such as ethyl and cyclohexylaminoethyl methacrylate N-vinyldiethylamine, vinylamine derivatives such as N-acetylvinylamine Allylamine, methacrylamine, N-methylacrylamine, N, N -Allylamine derivatives such as dimethylacrylamide, N, N-dimethylaminopropylacrylamide, acrylamide derivatives such as N-methylacrylamide, and aminostyrenes such as p-aminostyrene.
- Hexyl succinimide such as 2-aminoethyl succinimide and the like.
- epoxy group-containing ethylenically unsaturated compound a monomer having at least one unsaturated bond polymerizable in one molecule and at least one epoxy group is used.
- examples of such epoxy group-containing ethylenically unsaturated compounds include glycidyl acrylate and glycidyl methacrylate, maleic acid mono and diglycidyl esters, fumaric acid mono and diglycidyl esters, crotonic acid mono and diglycidyl esters, Mono and diglycidyl esters of tetrahydrophthalic acid, mono and diglycidyl esters of itaconic acid, mono and diglycidyl esters of butenetricarboxylic acid, mono and diglycidyl esters of citraconic acid, endo-cis-bicyclo [2.2.1] hept- Mono- and diglycidyl esters of 5-ene-2,3-dicarboxylic acid (Nadic acid TM ), endo-cis
- unsaturated carboxylic acids include acrylic acid, methacrylic acid, maleic acid, fumaric acid, tetrahydrophthalic acid, itaconic acid, citraconic acid, crotonic acid, isocrotonic acid, norbornene dicarboxylic acid, bicyclo [2,2,1] hept- And 2-ene-5,6-dicarboxylic acid.
- the derivatives include acid anhydrides, acid halides, amides, imides, and esters.
- unsaturated carboxylic acid derivative examples include, for example, maleenyl chloride, maleenylimide, maleic anhydride, itaconic anhydride, citraconic anhydride, tetrahydrophthalic anhydride, bicyclo [2,2,1] hept-2-ene-5,6 -Dicarboxylic anhydride, dimethyl maleate, monomethyl maleate, diethyl maleate, diethyl fumarate, dimethyl itaconate, diethyl citraconic acid, dimethyl tetrahydrophthalate, bicyclo [2,2,1] hept-2-ene-5 , 6-Dicarboxylate, hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, glycidyl (meth) acrylate, aminoethyl methacrylate and aminopropyl methacrylate.
- (meth) acrylic acid, maleic anhydride, hydroxyethyl (meth) acrylate, glycidyl methacrylate, and aminopropyl methacrylate are preferable.
- the polar monomer an unsaturated carboxylic acid or a derivative thereof is preferably used because it can be easily obtained from the market and is inexpensive. That is, the (C) modified propylene resin used in the present invention is preferably one obtained by graft-modifying the resin composition (C-3) with an unsaturated carboxylic acid or a derivative thereof.
- the (C) modified propylene resin used in the present invention is obtained by modifying a resin composition (C-3) containing polypropylene (C-1) and a propylene / ⁇ -olefin copolymer (C-2). However, it is usually prepared by graft polymerization of a polar monomer to the resin composition (C-3).
- the polar monomer as described above is graft-polymerized to the resin composition (C-3)
- the polar monomer is usually 0.1 to 100% by weight with respect to 100% by weight of the resin composition (C-3). %, Preferably 5 to 80% by weight.
- This graft polymerization is usually carried out in the presence of a radical initiator.
- a radical initiator an organic peroxide or an azo compound can be used.
- the organic peroxide include dicumyl peroxide, di-t-butyl peroxide, 2,5-dimethyl-2,5-bis (t-butylperoxy) hexane, 2,5-dimethyl-2,5 -Bis (t-butylperoxy) hexyne-3,1,3-bis (t-butylperoxyisopropyl) benzene, 1,1-bis (t-butylperoxy) valerate, benzoyl peroxide, t-butylperoxide Oxybenzoate, acetyl peroxide, isobutyryl peroxide, octanoyl peroxide, decanoyl peroxide, lauroyl peroxide, 3,5,5-trimethylhexanoyl peroxide and 2,4-
- azo compound examples include azoisobutyronitrile and dimethylazoisobutyronitrile.
- the radical initiator is desirably used in an amount of about 0.001 to 10% by weight with respect to 100% by weight of the resin composition (C-3).
- the radical initiator can be used as it is mixed with the resin composition (C-3) and the polar monomer, but can also be used after being dissolved in a small amount of an organic solvent.
- Any organic solvent that can dissolve the radical initiator can be used without particular limitation.
- the organic solvent include aromatic hydrocarbon solvents such as benzene, toluene and xylene, aliphatic hydrocarbon solvents such as pentane, hexane, heptane, octane, nonane and decane, and fats such as cyclohexane, methylcyclohexane and decahydronaphthalene.
- Cyclic hydrocarbon solvents chlorobenzene, dichlorobenzene, trichlorobenzene, chlorinated hydrocarbons such as methylene chloride, chloroform, carbon tetrachloride and tetrachloroethylene, methanol, ethanol, n-propinol, iso-propanol, n- Alcohol solvents such as butanol, sec-butanol and tert-butanol, ketone solvents such as acetone, methyl ethyl ketone and methyl isobutyl ketone, ester solvents such as ethyl acetate and dimethyl phthalate, dimethyl Ether, diethyl ether, di -n- amyl ether, can be used ether solvents such as tetrahydrofuran and dioxy anisole.
- a reducing substance may be used.
- the graft amount of the polar monomer can be improved.
- Reducing substances include iron (II) ion, chromium ion, cobalt ion, nickel ion, palladium ion, sulfite, hydroxylamine, hydrazine, and further —SH, SO 3 H, —NHNH 2 , —COCH (OH) And compounds containing a group such as-.
- reducing substances include ferrous chloride, potassium dichromate, cobalt chloride, cobalt naphthenate, palladium chloride, ethanolamine, diethanolamine, N, N-dimethylaniline, hydrazine, and ethyl mercaptan.
- the reducing substance can be used in an amount of usually 0.001 to 5% by weight, preferably 0.1 to 3% by weight, based on 100% by weight of the resin composition (C-3).
- Graft modification of the resin composition (C-3) with a polar monomer can be carried out by a conventionally known method.
- the resin composition (C-3) is dissolved in an organic solvent, and then the polar monomer and radical initiator, etc. Can be added to the solution and reacted at a temperature of 70 to 200 ° C., preferably 80 to 190 ° C., for 0.5 to 15 hours, preferably 1 to 10 hours.
- the organic solvent is not particularly limited as long as it is an organic solvent that can dissolve the resin composition (C-3).
- aromatic hydrocarbon solvents such as benzene, toluene, and xylene, pentane, hexane, heptane, and the like.
- An aliphatic hydrocarbon solvent or the like can be used as the organic solvent.
- the modified propylene resin (C) can be produced by reacting the resin composition (C-3) and the polar monomer in the absence of a solvent using an extruder or the like. This reaction is desirably carried out at a temperature equal to or higher than the melting point of the resin composition (C-3), specifically 120 to 250 ° C., usually for 0.5 to 10 minutes.
- the modified amount of the modified propylene resin (C) thus obtained (the graft amount of the polar monomer) is usually 0.05 to 50% by weight, preferably 0.5% per 100% by weight of the modified propylene resin (C). It is desirable that the content be 1 to 20% by weight, more preferably 0.1 to 10% by weight, and particularly preferably 0 to 5% by weight.
- the melt flow rate obtained by measuring the (C) modified propylene-based resin prepared as described above at a temperature of 230 ° C. and a load of 2.16 kg in accordance with ASTM D1238 is usually from 0.1 to It is 2000 g / 10 minutes, preferably 1.0 to 1000 g / 10 minutes.
- Density of The (C) modified propylene resin is usually 875 ⁇ 900kg / m 3, is preferably 880 ⁇ 895kg / m 3.
- the intrinsic viscosity [ ⁇ ] of this (C) -modified propylene resin measured in decalin at 135 ° C. is usually 0.01 to 6 dl / g, preferably 0.1 to 5 dl / g.
- the melting point of the (C) modified propylene resin is usually in the range of 60 to 160 ° C., and the crystallinity is usually 20 to 60%, preferably 30 to 55%.
- the resin composition of the present invention comprises (A) general-purpose engineering plastic 20 to 80% by weight, preferably 30 to 70% by weight, (B) polypropylene resin 10 to 50% by weight, preferably 20 to 45% by weight and ( C) 1 to 30% by weight, preferably 3 to 25% by weight of the modified propylene-based resin (provided that the total of (A), (B) and (C) is 100% by weight).
- the resin composition of the present invention contains the (C) modified propylene resin as a compatibilizing agent, (A) general-purpose engineering plastic and (B) polypropylene resin are well compatibilized in the resin composition.
- the resin composition is excellent in tensile strength and impact resistance and excellent in appearance.
- the physical property which (A) general-purpose engineering plastic and (B) polypropylene resin originally have, for example, low water absorption, heat resistance, chemical resistance, and bending elasticity is not impaired.
- the resin composition of the present invention includes a heat resistance stabilizer, an ultraviolet absorber, an anti-blocking agent, a slip agent, a charging agent. Additives such as inhibitors may be included.
- Such an additive is usually 0.01 to 1% by weight, preferably 0.02 to 0.6% by weight, based on the total of 100% by weight of the above (A), (B) and (C). Included in range.
- the method for preparing the resin composition of the present invention is not particularly limited, and any conventionally known method can be employed. For example, a method of mixing with a mixer such as a V-type blender, ribbon blender, Henschel mixer, and / or a method of kneading with a kneader such as an extruder, mixing roll, Banbury mixer, kneader, etc. may be used in combination or independently.
- the (A) general-purpose engineering plastic, the (B) polypropylene resin, and the (C) modified propylene resin may be mixed.
- the resin composition of the present invention obtained by mixing may be prepared into pellets or granules using an extruder or the like, or may be molded as it is to obtain a molded body.
- ⁇ Molded body> The molded body of the present invention is obtained by molding the resin composition.
- the resin composition is excellent in tensile strength and impact resistance and excellent in appearance. It also has excellent dimensional stability. Further, in the resin composition, (A) general-purpose engineering plastics and (B) polypropylene-based resins have inherently no physical properties such as low water absorption, heat resistance, chemical resistance, and flexural elasticity. For this reason, the molded object obtained by shape
- automobile parts and home appliance parts are preferable because they require heat resistance and chemical resistance.
- automobile parts include an outlet for window-washer liquid and a knob part of a door knock
- household appliance parts include a connector for electric wires.
- the present invention includes a method of using (C) a modified propylene resin as a compatibilizing agent for (A) general-purpose engineering plastic and (B) polypropylene resin. More specifically, the method is measured by differential scanning calorimetry (DSC) as a compatibilizer of (A) general-purpose engineering plastic 20 to 80% by weight and (B) polypropylene resin 10 to 50% by weight. 0 to 40% by weight of polypropylene (C-1) having a melting point (Tm) of 120 ° C. or higher, and a melting point (Tm) measured by DSC of less than 120 ° C.
- DSC differential scanning calorimetry
- the (C) modified propylene-based resin used in the present invention can be suitably used as a compatibilizer for a resin composition comprising a general-purpose engineering resin typified by polyamide, polyethylene terephthalate, and polybutylene terephthalate and polypropylene. .
- General-purpose engineering resins especially polyamides, have high heat resistance, but have high water absorption, resulting in a decrease in elastic modulus and poor dimensional stability due to water absorption.
- a non-polar resin and a relatively heat-resistant polypropylene are blended with polyamide and used as a resin composition.
- both are hardly mixed and water absorption of the resin composition can be suppressed, but there is a problem that the characteristics of the general-purpose engineering resin are greatly impaired.
- (C) modified propylene resin as a compatibilizer for (A) general-purpose engineering plastic and (B) polypropylene-based resin as in the present invention
- heat resistance and chemical resistance possessed by general-purpose engineering plastic Water absorption can be suppressed without impairing mechanical properties such as bending elasticity, tensile strength, and tensile elongation. Therefore, a resin composition having excellent dimensional stability can be obtained.
- the good compatibility is achieved, the molded object with a favorable surface state can be obtained from the resin composition of this invention.
- melt flow rate (MFR) The melt flow rate (MFR) [g / 10 min] of the propylene / 1-butene copolymer was measured at a temperature of 230 ° C. and a load of 2.16 kg according to ASTM D1238.
- the separation column is TSK GNH HT, the column size is 27 mm in diameter and 600 mm in length, the column temperature is 140 ° C., and o-dichlorobenzene (manufactured by Wako Pure Chemical Industries, Ltd.) and antioxidant are used as the mobile phase.
- BHT manufactured by Takeda Pharmaceutical Co., Ltd.
- the sample concentration is 0.1% by weight
- the sample injection amount is 500 ⁇ l
- a differential refractometer is used as a detector.
- Tm melting point
- ⁇ H heat of fusion
- the sample was pre-heated for 4 minutes with a heating press set at 200 ° C. and pressed for 3 minutes to a thickness of 1 mm.
- the sheet plasticized to a thickness of 1 mm was sandwiched in a cooling press set at 20 ° C. for 4 minutes to be cooled and solidified. After solidifying the sheet-like sample, it was allowed to stand at room temperature for one week or longer, and 5 mg was collected from the center of the sheet, packed in an aluminum pan, and set in the DSC measuring apparatus. From the endothermic curve observed under the condition of increasing the temperature from 20 ° C. to 200 ° C. at 10 ° C./min in a nitrogen atmosphere, the peak position is the melting point (Tm) and the peak area divided by the sample weight is the heat of fusion ( ⁇ H ).
- a test piece of 100 mm ⁇ 100 mm and thickness 2 mm was molded with an injection molding machine with a clamping force of 50 t with a cylinder temperature of 245 ° C. and a mold temperature of 80 ° C., and a temperature of 23 ° C. and a bending speed in accordance with ASTM D790.
- the bending elastic modulus and bending strength of the test piece were measured at 5 mm / min.
- a square plate having a size of 100 mm ⁇ 100 mm and a thickness of 3 mm was molded by an injection molding machine having a cylinder temperature of 245 ° C. and a mold temperature of 80 ° C. and a clamping force of 50 t. The surface state of this square plate was confirmed visually.
- “Smooth” means that the color of the square plate is uniform and the surface of the square plate is not caught even if you trace it with a nail. Those with a certain state were evaluated as “Yes”.
- the desiccant was filtered and the solvent was distilled off from the filtrate to obtain a liquid.
- This liquid was distilled under reduced pressure (45-47 ° C./10 mmHg) to obtain 14.6 g of a pale yellow liquid. Analytical values are shown below.
- the organic layer was separated, and the organic layer was washed with 0.5N aqueous hydrochloric acid solution (150 ml ⁇ 4), water (200 ml ⁇ 3) and saturated brine (150 ml), and then dried over anhydrous magnesium sulfate.
- the desiccant was filtered and the solvent was distilled off from the filtrate to obtain a liquid.
- This liquid was distilled under reduced pressure (70 to 80 ° C./0.1 mmHg) to obtain 10.5 g of a yellow liquid. Analytical values are shown below.
- Zirconium tetrachloride (0.77 g, 3.3 mmol) was added to this slurry at ⁇ 78 ° C., and the mixture was stirred at ⁇ 78 ° C. for several hours and then at room temperature for 65 hours. The resulting black-brown slurry was filtered, and the residue was washed with 10 ml of diethyl ether and extracted with dichloromethane to obtain a red solution. The solvent of this solution was distilled off under reduced pressure to obtain 0.53 g of reddish orange solid metallocene catalyst dimethylmethylene (3-tert-butyl-5-methylcyclopentadienyl) fluorenylzirconium dichloride. Analytical values are shown below.
- the obtained polymer 1 was 15.2 g.
- Polymer 1 has a 1-butene content (M) of 27.1 mol%, a melt flow rate (MFR) of 6.5 g / 10 min, a molecular weight distribution (Mw / Mn) of 2.11 and a melting point (Tm). : 76.2 ° C., heat of fusion ( ⁇ H): 48 J / g.
- M is 27.1 for the requirement (4) formula: ⁇ 2.6M + 130 ⁇ Tm ⁇ ⁇ 2.3M + 155, the above formula is 59.5 ⁇ Tm ⁇ 92.7, and Tm: Satisfies 76.2.
- the obtained polymer 2 was 15.2 g.
- Polymerized polymer 2 has a 1-butene content (M) of 22.4 mol%, a melt flow rate (MFR) of 6.5 g / 10 min, a molecular weight distribution (Mw / Mn) of 2.11 and a melting point (Tm). : 83.2 ° C., heat of fusion ( ⁇ H): 51 J / g.
- MFR melt flow rate
- Mw / Mn molecular weight distribution
- Tm melting point
- ⁇ H melting point
- Example 1 [Preparation of Modified Propylene Resin (C1)] Polymeric polymer 1 obtained by repeating the production example 1; 5 kg, maleic anhydride; 25 g, and as a reaction initiator, Perhexin 25B manufactured by Nippon Oil & Fats Co., Ltd. (half-temperature after 1 minute is 180 ° C.) 12.5 g Were blended using a Henschel mixer. Next, the blended product is melt-kneaded at a temperature of 230 ° C. using a 30 mm ⁇ twin-screw extruder, so that a modified propylene resin (C1) composed of a modified propylene / 1-butene copolymer (C-2) is obtained.
- Table 2 shows the MFR, density, and maleic acid content of the resulting modified propylene resin (C1).
- A1 General-purpose engineering plastic
- the resin composition (1) containing the general-purpose engineering plastic (A1), the propylene-based resin (B1), and the modified propylene-based resin (C1) is obtained by melt-kneading them using a 30 mm ⁇ twin-screw extruder. Obtained.
- Table 2 shows the results of evaluating the tensile yield strength, tensile elongation, bending strength, bending elastic modulus, Izod impact strength, and appearance of the obtained resin composition (1).
- C-2 Preparation of Modified Propylene Resin (C2)] Polymerized polymer 1 obtained by repeating the production example 1; 4.75 kg, maleic anhydride; 25 g, a polypropylene resin (C-1) manufactured by Prime Polymer, Prime Poly
- Modified propylene resin (C2) was obtained.
- Table 2 shows the MFR, density, and maleic acid content of the resulting modified propylene resin (C2).
- general-purpose engineering plastic (A1) Amilan CM1017 manufactured by Toray Industries, Inc .; 2.9 kg, as propylene resin (B1), manufactured by Prime Polymer Co., Ltd., Prime Polypro CJ700; 1.5 kg, and modified propylene resin ( C2) 0.6 kg was blended using a Henschel mixer.
- the resin composition (2) containing the general-purpose engineering plastic (A1), the propylene-based resin (B1), and the modified propylene-based resin (C2) is obtained by melt-kneading them using a 30 mm ⁇ twin-screw extruder. Obtained.
- Table 2 shows the results of evaluating the tensile yield strength, tensile elongation, bending strength, bending elastic modulus, Izod impact strength, and appearance of the obtained resin composition (2).
- Example 3 [Preparation of Modified Propylene Resin (C3)] A modified polypropylene (modified polypropylene 2) was used in the same manner as in Example 2 except that the polymer 2 obtained by repeating the production example 2 was used and the amount of each component used was changed to the amount shown in Table 2. A modified propylene resin (C3) containing C-1) and a modified propylene / 1-butene copolymer (C-2) was obtained. Table 2 shows the MFR, density, and maleic acid content of the resulting modified propylene resin (C3).
- Table 2 shows the results of evaluating the tensile yield strength, tensile elongation, bending strength, bending elastic modulus, Izod impact strength, and appearance of the obtained resin composition (3).
- Examples 4 to 12 [Preparation of Modified Propylene Resins (C4) to (C12)] A modified polypropylene (C-1) and a modified propylene / 1-butene copolymer (modified propylene / 1-butene copolymer) were prepared in the same manner as in Example 2 except that the amount of each component used was changed to the amount shown in Table 2 or 3. Modified propylene resins (C4) to (C12) containing C-2) were obtained. Tables 2 and 3 show the MFR, density, and maleic acid content of the resulting modified propylene resins (C4) to (C12).
- Table 3 shows the results of evaluation of the tensile yield strength, tensile elongation, bending strength, bending elastic modulus, Izod impact strength, and appearance of the obtained resin compositions (4) to (12).
- a modified polypropylene (C-1) and a modified propylene / 1-butene copolymer (C—) were prepared in the same manner as in Example 2 except that the amount used of each component was changed to the amount shown in Table 3.
- a modified propylene resin (C13) containing 2) was obtained.
- Table 3 shows the MFR, density, and maleic acid content of the modified propylene resin (C13). Moreover, except having changed the modified propylene-type resin (C2) into the modified propylene-type resin (C13), it carries out similarly to Example 2, general-purpose engineering plastic (A1), propylene-type resin (B1), and modified propylene-type resin ( A resin composition (13) containing C13) was obtained.
- Table 3 shows the results of evaluating the tensile yield strength, tensile elongation, bending strength, bending elastic modulus, Izod impact strength, and appearance of the obtained resin composition (13).
- [Comparative Example 2] A modified propylene-based resin (C14) was obtained in the same manner as in Example 1 except that the polymer polymer 1 obtained in Production Example 1 was changed to Prime Polymer Co., Ltd. polypropylene resin, Prime Polypro F113G; 5 kg. Table 3 shows the MFR, density, and maleic acid content of the resulting modified propylene resin (C14).
- a resin composition containing general-purpose engineering plastic (A1), propylene-based resin (B1), and modified propylene-based resin (C14) is performed in the same manner as in Example 1 except that the modified propylene-based resin (C14) is used. (14) was obtained.
- Table 3 shows the results of evaluating the tensile yield strength, tensile elongation, bending strength, bending elastic modulus, Izod impact strength, and appearance of the obtained resin composition (14).
- a resin composition (15) containing a general-purpose engineering plastic (A1) and a propylene-based resin (B1) was obtained by melt-kneading using a 30 mm ⁇ twin-screw extruder.
- Table 3 shows the results of evaluating the tensile yield strength, tensile elongation, bending strength, flexural modulus, Izod impact strength, and appearance of the obtained resin composition (15).
- the general-purpose engineering plastic (A1), the propylene-based resin (B1), and the modified resin were used in the same manner as in Example 1 except that the modified ethylene / 1-butene copolymer was used instead of the modified propylene-based resin (C1).
- a resin composition (16) containing an ethylene / 1-butene copolymer was obtained.
- Table 3 shows the results of evaluating the tensile yield strength, tensile elongation, bending strength, flexural modulus, Izod impact strength, and appearance of the obtained resin composition (16).
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Abstract
Description
特許文献3には、前記ポリアミド/ポリオレフィン樹脂組成物は、耐衝撃性、ウエルド強度に優れることが記載されている。特許文献3に記載の変性ポリオレフィン樹脂は、ポリプロピレン樹脂とポリエチレン樹脂との混合物に酸無水物を付加させて得られる樹脂であり、該樹脂には、ポリアミド樹脂とポリプロピレン樹脂との相溶性が不足していることから、外観や引張伸び等の観点から改善の余地がある。
(A)汎用エンジニアリングプラスチック20~80重量%、(B)ポリプロピレン系樹脂10~50重量%および(C)変性プロピレン系樹脂1~30重量%(ただし、前記(A)、(B)および(C)の合計を100重量%とする)を含み、
前記(C)変性プロピレン系樹脂が、示差走査熱量測定(DSC)により測定される融点(Tm)が120℃以上であるポリプロピレン(C-1)0~40重量%、およびDSCにより測定される融点(Tm)が120℃未満またはDSCにより融点ピークが観測されないプロピレンと炭素原子数2または4~10のα-オレフィンとの共重合体(C-2)60~100重量%(ただし、前記(C-1)および(C-2)の合計を100重量%とする)を含む樹脂組成物(C-3)を変性して得られる樹脂であることを特徴とする。
前記プロピレンとα-オレフィンとの共重合体(C-2)が、プロピレン・1-ブテン共重合体であることが好ましく、
(1)プロピレンから導かれる構成単位を50~95モル%および1-ブテンから導かれる構成単位を5~50モル%含有し、
(2)ゲルパーミエーションクロマトグラフィー(GPC)により求められる分子量分布(Mw/Mn)が3.0以下であり、
(3)示差走査熱量測定(DSC)により測定される融点(Tm)が110℃以下であるかまたはDSCにより融点ピークが観測されないことがより好ましく、さらに、
(4)示差走査熱量測定(DSC)により測定される融点(Tm)(℃)と1-ブテンから導かれる構成単位含量(M)(モル%)との関係が
-2.6M+130≦Tm≦-2.3M+155であることが特に好ましい。
本発明には、前記樹脂組成物を成形して得られる成形体が含まれる。
さらに本発明には、(A)汎用エンジニアリングプラスチック20~80重量%および(B)ポリプロピレン系樹脂10~50重量%の相溶化剤として、
示差走査熱量測定(DSC)により測定される融点(Tm)が120℃以上であるポリプロピレン(C-1)0~40重量%、およびDSCにより測定される融点(Tm)が120℃未満またはDSCにより融点ピークが観測されないプロピレンと炭素原子数2または4~10のα-オレフィンとの共重合体(C-2)60~100重量%(ただし、前記(C-1)および(C-2)の合計を100重量%とする)を含む樹脂組成物(C-3)を変性して得られる、
(C)変性プロピレン系樹脂1~30重量%を使用する方法(ただし、前記(A)、(B)および(C)の合計を100重量%とする)が含まれる。
本発明の樹脂組成物は、(A)汎用エンジニアリングプラスチック20~80重量%、(B)ポリプロピレン系樹脂10~50重量%および(C)変性プロピレン系樹脂1~30重量%(ただし、前記(A)、(B)および(C)の合計を100重量%とする)を含み、前記(C)変性プロピレン系樹脂が、示差走査熱量測定(DSC)により測定される融点(Tm)が120℃以上であるポリプロピレン(C-1)0~40重量%、およびDSCにより測定される融点(Tm)が120℃未満またはDSCにより融点ピークが観測されないプロピレンと炭素原子数2または4~10のα-オレフィンとの共重合体(C-2)60~100重量%(ただし、前記(C-1)および(C-2)の合計を100重量%とする)を含む樹脂組成物(C-3)を変性して得られる樹脂であることを特徴とする。
本発明で用いられる汎用エンジニアリングプラスチックとしては、特に限定はないが、通常は、ポリアミド、ポリエチレンテレフタレートおよびポリブチレンテレフタレートからなる群から選択される少なくとも1種が用いられる。本発明においては、汎用エンジニアリングプラスチックは、一種単独で用いても、二種以上を用いてもよい。
本発明に用いる、ポリブチレンテレフタレートは、1,4-ブタンジオールと、テレフタル酸との共重合体であり、本発明には従来公知のポリブチレンテレフタレートを用いることができる。
<(B)ポリプロピレン系樹脂>
本発明に用いられる(B)ポリプロピレン系樹脂に特に限定はないが、通常はその示差走査熱量測定(DSC)により測定される融点(Tm)が120℃以上、好ましくは120~170℃、より好ましくは120~160℃、特に好ましくは130~155℃である。
このような(B)ポリプロピレン系樹脂は、固体状チタン触媒(チーグラー触媒)成分またはメタロセン化合物触媒成分を用いて製造することができる。また、(B)ポリプロピレン系樹脂として、市販品を用いてもよく、市販品としては、例えば、「プライムポリプロ F113G」(商品名;プライムポリマー(株)製)、「プライムポリプロ CJ700」(商品名;プライムポリマー(株)製)が挙げられる。
本発明に用いる(C)変性プロピレン系樹脂は、示差走査熱量測定(DSC)により測定される融点(Tm)が120℃以上であるポリプロピレン(C-1)0~40重量%、およびDSCにより測定される融点(Tm)が120℃未満またはDSCにより融点ピークが観測されないプロピレンと炭素原子数2または4~10のα-オレフィンとの共重合体(C-2)60~100重量%を含む樹脂組成物(C-3)を変性して得られる樹脂である。
前記(C-1)ポリプロピレンとしては、示差走査熱量測定(DSC)により測定される融点(Tm)が120℃以上であることが必須の条件であることを除いて、前記(B)ポリプロピレン系樹脂で記載したポリプロピレン系樹脂を用いることができる。
前記プロピレンと炭素原子数2または4~10のα-オレフィンとの共重合体(C-2)(以下プロピレン・α-オレフィン共重合体(C-2)とも記す)には、DSCにより測定される融点(Tm)が120℃未満またはDSCにより融点ピークが観測されないことを除いて特に限定は無く、該共重合体(C-2)として種々の共重合体を用いることができる。
(1)プロピレンから導かれる構成単位を50~95モル%および1-ブテンから導かれる構成単位を5~50モル%含有する。
(2)ゲルパーミエーションクロマトグラフィー(GPC)により求められる分子量分布(Mw/Mn)が3.0以下である。
(3)示差走査熱量測定(DSC)により測定される融点(Tm)が110℃以下であるかまたはDSCにより融点ピークが観測されない。
(4)示差走査熱量測定(DSC)により測定される融点(Tm)(℃)と1-ブテンから導かれる構成単位含量(M)(モル%)との関係が-2.6M+130≦Tm≦-2.3M+155である。
以下各要件について説明する。
要件(1)は、プロピレン・1-ブテン共重合体が、プロピレンから導かれる構成単位を50~95モル%、好ましくは55~93モル%、より好ましくは60~90モル%、特に好ましくは60~79モル%の量で、1-ブテンから導かれる構成単位を5~50モル%、好ましくは7~45モル%、より好ましくは10~40モル%、特に好ましくは21~40モル%の量で含有するとするものである。
要件(2)は、プロピレン・1-ブテン共重合体の、ゲルパーミエーションクロマトグラフィー(GPC)により求められる、分子量分布(Mw/Mn)が3.0以下であり、好ましくは2.0~3.0、より好ましくは2.0~2.5であるとするものである。ポリプロピレン換算のMw/Mnが上記範囲内であると、プロピレン・1-ブテン共重合体における低分子量成分の含有量を少なくできる。
[要件(3)]
要件(3)は、プロピレン・1-ブテン共重合体の示差走査熱量計で測定される融点(Tm)が110℃以下であるかまたはDSCにより融点ピークが観測されず、好ましくは融点が50~110℃、より好ましくは60~100℃、さらに好ましくは65~90℃、特に好ましくは76~90℃であるとするものである。
[要件(4)]
要件(4)は、プロピレン・1-ブテン共重合体の、示差走査型熱量計で測定される融点(Tm)(℃)と1-ブテンから導かれる構成単位含量(M)(モル%)とが
-2.6M+130≦Tm≦-2.3M+155
で表される関係式を満たすとするものである。
要件(5)は、プロピレン・1-ブテン共重合体の、ASTM D1238に準拠して、温度230℃、2.16kg荷重で測定して得られるメルトフローレート(MFR)が0.01~1000g/10分、好ましくは0.1~100g/10分、より好ましくは1~20g/10分であるとするものである。MFRが0.01g/10分以上であると、本発明の樹脂組成物の溶融成形時の成形性が良好であり、MFRが1000g/10分以下であると、前記樹脂組成物の機械物性が損なわれることがなく好ましい。
要件(6)は、プロピレン・1-ブテン共重合体の、共重合モノマー連鎖分布のランダム性を示すパラメータB値が1.0~1.5、好ましくは1.0~1.3、より好ましくは1.0~1.2であるとするものである。
B=P12/(2P1・P2)
式中、P1およびP2は、それぞれ第1モノマー、第2モノマー含量分率であり、P12は全二分子中連鎖中の(第1モノマー)-(第2モノマー)連鎖の割合である。なお、このB値は、1のときベルヌ-イ統計に従い、B<1のとき共重合体はブロック的であり、B>1のとき交互的である。
要件(7)は、プロピレン・1-ブテン共重合体の、X線回折法により測定される結晶化度(C)[%]と1-ブテンから導かれる構成単位含量(M)[モル%]との関係が、C≧-1.5M+75を満たすとするものである。
要件(8)は、プロピレン・1-ブテン共重合体が、(i)頭-尾結合したプロピレンから導かれる構成単位3連鎖、または(ii)頭-尾結合したプロピレンから導かれる構成単位とブテンから導かれる構成単位とからなり、かつ第2単位目にプロピレンから導かれる構成単位を含むプロピレン・ブテン3連鎖を、3連鎖中の第2単位目のプロピレンから導かれる構成単位の側鎖メチル基について、13C-NMRスペクトル(ヘキサクロロブタジエン溶液、テトラメチルシランを基準)で測定したとき、19.5~21.9ppmに表れるピ-クの全面積を100%とした場合に、21.0~21.9ppmに表れるピ-クの面積が90%以上、好ましくは92%以上、より好ましくは94%以上であるとするものである。このようなピ-ク面積が上記範囲内であると、立体規則性が低い低融点成分の含有量を少なくできる。
例えば、プロピレン・ブテン-1ランダム共重合体において、このmm分率は、ポリマー鎖中に存在する3個の頭-尾結合したプロピレン単位連鎖を表面ジグザグ構造で表したとき、そのメチル基の分岐方向が同一である割合として定義され、下記のように13C-NMRスペクトルから求められる。
プロピレン・1-ブテン共重合体の13C-NMRスペクトルは、サンプル管中でプロピレン・1-ブテン共重合体をロック溶媒として少量の重水素化ベンゼンを含むヘキサクロロブタジエンに完全に溶解させた後、120℃においてプロトン完全デカップリング法により測定される。測定条件は、フリップアングルを45゜とし、パルス間隔を3.4T1以上(T1はメチル基のスピン格子緩和時間のうち最長の値)とする。メチレン基およびメチン基のT1は、メチル基のそれより短いので、この条件では試料中のすべての炭素の磁化の回復は99%以上である。ケミカルシフトは、テトラメチルシランを基準として頭-尾結合したプロピレン単位5連鎖(mmmm)の第3単位目のメチル基炭素ピークを21.593ppmとして、他の炭素ピークはこれを基準とする。
表1に示される頭-尾結合3連鎖(i)および(ii)のうち、(i)3連鎖がすべてプロピレン単位からなるPPP(mm)、PPP(mr)、PPP(rr)についてメチル基の方向を下記に表面ジグザグ構造で図示するが、(ii)α-オレフィン単位を含む3連鎖(PPB、BPB)のmm、mr、rr結合は、このPPPに準ずる。
第2領域では、mr結合したPPP、PPB、BPB3連鎖中の第2単位(プロピレン単位)目のメチル基およびrr結合したPPB、BPB3連鎖中の第2単位(プロピレン単位)目のメチル基が共鳴する。
したがってプロピレン系エラストマーのトリアドタクティシティ(mm分率)は、 (i)頭-尾結合したプロピレン単位3連鎖、または (ii)頭-尾結合したプロピレン単位とα-オレフィン単位とからなり、かつ第2単位目にプロピレン単位を含むプロピレン・α-オレフィン3連鎖を、3連鎖中の第2単位目のプロピレン単位の側鎖メチル基について、13C-NMRスペクトル(ヘキサクロロブタジエン溶液、テトラメチルシランを基準)で測定したとき、 19.5~21.9ppm(メチル炭素領域)に表れるピークの全面積を100%とした場合に、 21.0~21.9ppm(第1領域)に表れるピークの面積の割合(百分率)として、下記式から求められる。
メチル基Cに基づくピーク面積は、隣接するメチン基(31.3ppm付近で共鳴)のピーク面積より求めることができる。メチル基Dに基づくピーク面積は、前記構造(iv)のαβメチレン炭素に基づくピーク(34.3ppm付近および34.5ppm付近で共鳴で共鳴)のピーク面積の和の1/2より求めることができ、メチル基D'に基づくピーク面積は、前記構造(v)メチル基E'のメチル基の隣接メチン基に基づくピーク(33.3ppm付近で共鳴)の面積より求めることができる。メチル基Eに基づくピーク面積は、隣接するメチン炭素(33.7ppm付近で共鳴)のピーク面積より求めることができ、メチル基E'に基づくピーク面積は、隣接するメチン炭素(33.3ppm付近で共鳴)のピーク面積より求めることができる。
上述の炭化水素基としては、メチル基、エチル基、n-プロピル基、アリル基、n-ブチル基、n-ペンチル基、n-ヘキシル基、n-ヘプチル基、n-オクチル基、n-ノニル基、n-デカニル基などの直鎖状炭化水素基;イソプロピル基、tert-ブチル基、アミル基、3-メチルペンチル基、1,1-ジエチルプロピル基、1,1-ジメチルブチル基、1-メチル-1-プロピルブチル基、1,1-プロピルブチル基、1,1-ジメチル-2-メチルプロピル基、1-メチル-1-イソプロピル-2-メチルプロピル基などの分岐状炭化水素基;シクロペンチル基、シクロヘキシル基、シクロヘプチル基、シクロオクチル基、ノルボルニル基、アダマンチル基などの環状飽和炭化水素基;フェニル基、トリル基、ナフチル基、ビフェニル基、フェナントリル基、アントラセニル基などの環状不飽和炭化水素基;ベンジル基、クミル基、1,1-ジフェニルエチル基、トリフェニルメチル基などの環状不飽和炭化水素基の置換した飽和炭化水素基;メトキシ基、エトキシ基、フェノキシ基、フリル基、N-メチルアミノ基、N,N-ジメチルアミノ基、N-フェニルアミノ基、ピリル基、チエニル基などのヘテロ原子含有炭化水素基等を挙げることができる。
前記一般式(1a)において、シクロペンタジエニル環に置換するR2、R4は炭素数1~20の炭化水素基であることが好ましい。炭素数1~20の炭化水素基としては、前述の炭化水素基を例示することができる。中でも、R2はtert-ブチル基、アダマンチル基、トリフェニルメチル基のような嵩高い置換基であることがより好ましく、R4はメチル基、エチル基、n-プロピル基のようにR2より立体的に小さい置換基であることがより好ましい。ここでいう立体的に小さいとは、その置換基が占有する体積を指す。
前記一般式(1a)において、Mは第4族遷移金属であり、具体的にはTi、Zr、Hf等が挙げられる。また、Qはハロゲン、炭化水素基、アニオン配位子または孤立電子対で配位可能な中性配位子から同一または異なる組合せで選ばれる。jは1~4の整数であり、jが2以上の時は、Qは互いに同一でも異なっていてもよい。ハロゲンの具体例としては、フッ素、塩素、臭素、ヨウ素が挙げられ、炭化水素基の具体例としては前述と同様のものなどが挙げられる。アニオン配位子の具体例としては、メトキシ、tert-ブトキシ、フェノキシなどのアルコキシ基、アセテート、ベンゾエートなどのカルボキシレート基、メシレート、トシレートなどのスルホネート基等が挙げられる。孤立電子対で配位可能な中性配位子の具体例としては、トリメチルホスフィン、トリエチルホスフィン、トリフェニルホスフィン、ジフェニルメチルホスフィンなどの有機リン化合物、テトラヒドロフラン、ジエチルエーテル、ジオキサン、1,2-ジメトキシエタンなどのエーテル類等が挙げられる。Qは少なくとも1つがハロゲンまたはアルキル基であることが好ましい。
(2a-1)一般式:Ra mAl(ORb)nHpXq
(式中、RaおよびRbは、互いに同一でも異なっていてもよく、炭素数が1~15、好ましくは1~4の炭化水素基を示し、Xはハロゲン原子を示し、mは0<m≦3、nは0≦n<3、pは0≦p<3、qは0≦q<3の数であり、かつm+n+p+q=3である)で表される有機アルミニウム化合物。このような化合物の具体例として、トリメチルアルミニウム、トリエチルアルミニウム、トリイソブチルアルミニウム、ジイソブチルアルミニウムハイドライドなどを例示することができる。
(式中、M2はLi、NaまたはKを示し、Raは炭素数が1~15、好ましくは1~4の炭化水素基を示す)で表される第1族金属とアルミニウムとの錯アルキル化物。このような化合物としては、LiAl(C2H5)4、LiAl(C7H15)4などを例示することができる。
(式中、RaおよびRbは、互いに同一でも異なっていてもよく、炭素数が1~15、好ましくは1~4の炭化水素基を示し、M3はMg、ZnまたはCdである)で表される第2族または第12族金属のジアルキル化合物。
1)吸着水を含有する化合物または結晶水を含有する塩類、たとえば塩化マグネシウム水和物、硫酸銅水和物、硫酸アルミニウム水和物、硫酸ニッケル水和物、塩化第1セリウム水和物などの炭化水素媒体懸濁液に、トリアルキルアルミニウムなどの有機アルミニウム化合物を添加して、吸着水または結晶水と有機アルミニウム化合物とを反応させる方法。
2)ベンゼン、トルエン、ジエチルエーテル、テトラヒドロフランなどの媒体中で、トリアルキルアルミニウムなどの有機アルミニウム化合物に直接水、氷または水蒸気を作用させる方法。
3)デカン、ベンゼン、トルエンなどの媒体中でトリアルキルアルミニウムなどの有機アルミニウム化合物に、ジメチルスズオキシド、ジブチルスズオキシドなどの有機スズ酸化物を反応させる方法。
本発明に使用されるプロピレン・α-オレフィン共重合体(C-2)は、好適には、上述の触媒の存在下に、プロピレンと、炭素数2または4~10のα-オレフィン、特に好ましくは1-ブテンと、必要に応じて少量のその他のオレフィンとを共重合して得られる。共重合に際し、各モノマーは、製造するプロピレン・α-オレフィン共重合体(C-2)中の各構成単位量が所望の比率となる量で用いられればよく、具体的には、プロピレン/α-オレフィンのモル比で50/50~95/5、好ましくは55/45~93/7、より好ましくは60/40~90/10の割合で用いることが望ましい。
<樹脂組成物(C-3)>
本発明に使用される樹脂組成物(C-3)は、前記ポリプロピレン(C-1)0~40重量%、および前記プロピレン・α-オレフィン共重合体(C-2)60~100重量%を含む樹脂組成物である。
前記樹脂組成物(C-3)の変性方法としては、通常は、前記樹脂組成物(C-3)に極性モノマーをグラフト反応させることにより行われる。
前記変性に用いる極性モノマーとしては、水酸基含有エチレン性不飽和化合物、アミノ基含有エチレン性不飽和化合物、エポキシ基含有エチレン性不飽和化合物、不飽和カルボン酸あるいはその誘導体などが挙げられる。
前記極性モノマーとしては、市場から容易に入手することができ、且つ安価であることから不飽和カルボン酸またはその誘導体を用いることが好ましい。すなわち、本発明に使用される(C)変性プロピレン系樹脂は、前記樹脂組成物(C-3)が不飽和カルボン酸またはその誘導体によりグラフト変性されたものであることが好ましい。
本発明に用いる(C)変性プロピレン系樹脂は、ポリプロピレン(C-1)およびプロピレン・α-オレフィン共重合体(C-2)を含む樹脂組成物(C-3)を変性することにより得られるが、通常は、前記樹脂組成物(C-3)に極性モノマーをグラフト重合することにより調製される。
有機過酸化物としては、たとえばジクミルパーオキサイド、ジ-t-ブチルパーオキサイド、2,5-ジメチル-2,5-ビス(t-ブチルパーオキシ)ヘキサン、2,5-ジメチル-2,5-ビス(t-ブチルパーオキシ)ヘキシン-3、1,3-ビス(t-ブチルパーオキシイソプロピル)ベンゼン、1,1-ビス(t-ブチルパーオキシ)バラレート、ベンゾイルパーオキサイド、t-ブチルパーオキシベンゾエート、アセチルパーオキサイド、イソブチリルパーオキサイド、オクタノイルパーオキサイド、デカノイルパーオキサイド、ラウロイルパーオキサイド、3,5,5-トリメチルヘキサノイルパーオキサイドおよび2,4-ジクロロベンゾイルパーオキサイド、m-トルイルパーオキサイドなどが挙げられる。
ラジカル開始剤は、樹脂組成物(C-3)100重量%に対して、0.001~10重量%程度の量で使用されることが望ましい。
樹脂組成物(C-3)の極性モノマーによるグラフト変性は、従来公知の方法で行うことができ、たとえば樹脂組成物(C-3)を有機溶媒に溶解し、次いで極性モノマーおよびラジカル開始剤などを溶液に加え、70~200℃、好ましくは80~190℃の温度で、0.5~15時間、好ましくは1~10時間反応させることにより行うことができる。
この反応は、樹脂組成物(C-3)の融点以上、具体的には120~250℃の温度で、通常0.5~10分間行なわれることが望ましい。
この(C)変性プロピレン系樹脂の、135℃、デカリン中で測定される極限粘度[η]は、通常は0.01~6dl/g、好ましくは0.1~5dl/gである。さらに(C)変性プロピレン系樹脂の融点は、通常は60~160℃の範囲にあり、結晶化度は、通常は20~60%、好ましくは30~55%であることが望ましい。
)変性プロピレン系樹脂を含む樹脂組成物>
本発明の樹脂組成物は、前記(A)汎用エンジニアリングプラスチック20~80重量%、好ましくは30~70重量%、(B)ポリプロピレン系樹脂10~50重量%、好ましくは20~45重量%および(C)変性プロピレン系樹脂1~30重量%、好ましくは3~25重量%を含む(ただし、前記(A)、(B)および(C)の合計を100重量%とする)。
本発明の樹脂組成物の調製方法としては特に限定はなく、従来公知の任意の方法を採用することができる。例えば、V型ブレンダー、リボンブレンダー、ヘンシェルミキサー等の混合機により混合する方法、および/または押出機、ミキシングロール、バンバリーミキサー、ニーダー等の混練機により混練する方法を組み合わせて、あるいは単独で採用し、上記(A)汎用エンジニアリングプラスチック、(B)ポリプロピレン系樹脂および(C)変性プロピレン系樹脂を混合すればよい。
<成形体>
本発明の成形体は、前記樹脂組成物を成形して得られる。
以下の実施例および比較例において、各種性状の測定あるいは評価は次の方法により行った。
プロピレン・1-ブテン共重合体に含まれる、1-ブテンから導かれる構成単位の量である1-ブテン含有量(M)[モル%]を、13C-NMRにより求めた。
プロピレン・1-ブテン共重合体のメルトフローレート(MFR)[g/10分]を、ASTM D1238に準拠し、温度230℃、2.16kg荷重にて測定した。
プロピレン・1-ブテン共重合体の分子量分布(Mw/Mn)を、ミリポア社製GPC-150Cを用い、以下のようにして測定した。
プロピレン・1-ブテン共重合体の融点(Tm)および融解熱量(ΔH)を、パーキンエルマー(株)製DSC-7型装置(示差走査型熱量計(DSC))を用いて測定した。
ASTM D1505に準拠して密度勾配管を用いて温度23℃で測定した。
[マレイン酸変性量]
エレメンタール社製元素分析装置Vario EL IIIにより酸素含有量を求めて、マレイン酸含有量に換算した。
シリンダー温度245℃、金型温度80℃とした50t型締力の射出成形機にて、ASTMIV号ダンベル114mm×18.3mm、厚さ2mmの試験片を成形し、ASTM D638に準拠して、温度23℃、引張速度50mm/分で前記試験片の引張降伏強さ、及び引張伸びを測定した。
シリンダー温度245℃、金型温度80℃とした50t型締力の射出成形機にて、100mm×100mm、厚さ2mmの試験片を成形し、ASTM D790に準拠して、温度23℃、曲げ速度5mm/分で前記試験片の曲げ弾性率、及び曲げ強さを測定した。
シリンダー温度245℃、金型温度80℃とした50t型締力の射出成形機にて、62.3mm×12.4mm、厚さ3mmのIzod衝撃試験用ノッチ付き試験片を成形し、ASTM D256に準拠して温度0℃、及び23℃で前記試験片のIzod衝撃強度を測定した。
シリンダー温度245℃、金型温度80℃とした50t型締力の射出成形機にて、100mm×100mm、厚さ3mmの角板を成形した。この角板の表面状態を目視で確認した。
(1)1-tert-ブチル-3-メチルシクロペンタジエンの調製
窒素雰囲気下でtert-ブチルマグネシウムクロライド/ジエチルエーテル溶液(450ml、0.90mol、2.0mol/l溶液)に脱水ジエチルエーテル(350ml)を加えた。得られた溶液に、氷冷下で0℃を保ちながら3-メチルシクロペンテノン(43.7g、0.45mmol)の脱水ジエチルエーテル(150ml)溶液を滴下し、さらに室温で15時間攪拌した。反応溶液に塩化アンモニウム(80.0g、1.50mol)の水(350ml)溶液を、氷冷下で0℃を保ちながら滴下した。この溶液に水(2500ml)を加え攪拌した後、有機層を分離して水で洗浄した。この有機層に、氷冷下で0℃を保ちながら10%塩酸水溶液(82ml)を加えた後、室温で6時間攪拌した。この反応液の有機層を分離し、水、飽和炭酸水素ナトリウム水溶液、水、飽和食塩水で洗浄した後、無水硫酸マグネシウムで乾燥した。乾燥剤を濾過し、濾液から溶媒を留去して液体を得た。この液体を減圧蒸留(45-47℃/10mmHg)することにより14.6gの淡黄色の液体を得た。分析値を以下に示す。
窒素雰囲気下で1-tert-ブチル-3-メチルシクロペンタジエン(13.0g、95.6mmol)の脱水メタノール(130ml)溶液に、氷冷下で0℃を保ちながら脱水アセトン(55.2g、950.4mmol)を滴下し、さらにピロリジン(68.0g、956.1mmol)を滴下した後、室温で4日間攪拌した。反応液をジエチルエーテル(400ml)で希釈後、水(400ml)を加えた。有機層を分離し、該有機層を0.5Nの塩酸水溶液(150ml×4)、水(200ml×3)飽和食塩水(150ml)で洗浄した後、無水硫酸マグネシウムで乾燥した。乾燥剤を濾過し、濾液から溶媒を留去して液体を得た。この液体を減圧蒸留(70~80℃/0.1mmHg)することにより10.5gの黄色の液体を得た。分析値を以下に示す。
フルオレン(10.1g、60.8mmol)のTHF(300ml)溶液に、氷冷下でn-ブチルリチウムのヘキサン溶液(40ml、61.6mmol)を窒素雰囲気下で滴下し、さらに室温で5時間攪拌した(濃褐色溶液)。この溶液を再度氷冷し、3-tert-ブチル-1,6,6-トリメチルフルベン(11.7g、66.5mmol)のTHF(300ml)溶液を窒素雰囲気下で滴下した。反応溶液を室温で14時間攪拌した後に得られた褐色溶液を氷冷し、水(200ml)を加えた。得られた溶液をジエチルエーテルで抽出、分離した有機相を硫酸マグネシウムで乾燥した後、濾過し、濾液から溶媒を減圧下で除去して橙褐色オイルを得た。このオイルをシリカゲルカラムクロマトグラフィー(展開溶媒:ヘキサン)で精製して3.8gの黄色オイルを得た。分析値を以下に示す。
氷冷下で2-(3-tert-ブチル-5-メチルシクロペンタジエニル)-2-フルオレニルプロパン(1.14g、3.3mmol)のジエチルエーテル(25ml)溶液にn-ブチルリチウムのヘキサン溶液(5.0ml、7.7mmol)を窒素雰囲気下で滴下し、さらに室温で14時間攪拌して桃色スラリーを得た。このスラリーに-78℃でジルコニウムテトラクロライド(0.77g、3.3mmol)を加え、-78℃で数時間攪拌し、室温で65時間撹拌した。得られた黒褐色スラリーを濾過し、濾物をジエチルエーテル10mlで洗浄した後、ジクロロメタンで抽出して赤色溶液を得た。この溶液の溶媒を減圧留去して0.53gの赤橙色の固体状のメタロセン触媒であるジメチルメチレン(3-tert-ブチル-5-メチルシクロペンタジエニル)フルオレニルジルコニウムジクロリドを得た。分析値を以下に示す。
充分に窒素置換した2000mlの重合装置に、875mlの乾燥ヘキサン、1-ブテン75gとトリイソブチルアルミニウム(1.0mmol)を常温で仕込んだ後、重合装置内温を65℃に昇温し、プロピレンで0.7MPaに加圧した。次いで、合成例2で得られたメタロセン触媒であるジメチルメチレン(3-tert-ブチル-5-メチルシクロペンタジエニル)フルオレニルジルコニウムジクロライド0.002mmolと、アルミニウム換算で0.6mmolのメチルアルミノキサン(東ソー・ファインケム社製)とを接触させたトルエン溶液を重合器内に添加した。重合器の内温65℃、プロピレン圧0.7MPaを保ちながら30分間重合し、20mlのメタノールを添加し重合を停止した。脱圧後、2lのメタノール中で重合溶液からポリマーを析出し、真空下130℃、12時間乾燥し、重合ポリマー1を得た。
充分に窒素置換した2000mlの重合装置に、875mlの乾燥ヘキサン、1-ブテン75gとトリイソブチルアルミニウム(1.0mmol)を常温で仕込んだ後、重合装置内温を60℃に昇温し、プロピレンで0.7MPaに加圧した。次いで、合成例2で得られたメタロセン触媒であるジメチルメチレン(3-tert-ブチル-5-メチルシクロペンタジエニル)フルオレニルジルコニウムジクロライド0.002mmolと、アルミニウム換算で0.6mmolのメチルアルミノキサン(東ソー・ファインケム社製)とを接触させたトルエン溶液を重合器内に添加した。重合器の内温65℃、プロピレン圧0.7MPaを保ちながら30分間重合し、20mlのメタノールを添加し重合を停止した。脱圧後、2lのメタノール中で重合溶液からポリマーを析出し、真空下130℃、12時間乾燥し、重合ポリマー2を得た。
[変性プロピレン系樹脂(C1)の調製]
前記製造例1を繰り返し行う事で得られた重合ポリマー1;5kg、無水マレイン酸;25g、及び反応開始剤として、日本油脂株式会社製パーヘキシン25B(1分後半減温度が180℃)12.5gをヘンシェルミキサーを用いてブレンドした。次いで、該ブレンド物を30mmφの二軸押出機を用いて温度230℃で溶融混練することで、変性されたプロピレン・1-ブテン共重合体(C-2)からなる変性プロピレン系樹脂(C1)を得た。得られた変性プロピレン系樹脂(C1)のMFR、密度、及びマレイン酸含有量を 表2に示す。
汎用エンジニアリングプラスチック(A1)として、東レ(株)製 アミランCM1017(ポリアミド6 Tm=225℃);2.9kg、プロピレン系樹脂(B1)として、プライムポリマー(株)社製、プライムポリプロ CJ700(ホモポリマー、Tm=160℃);1.5kg、及び変性プロピレン系樹脂(C1)0.6kgを、ヘンシェルミキサーを用いてブレンドした。その後、30mmφの二軸押出機を用いてそれらを溶融混練することで、汎用エンジニアリングプラスチック(A1)、プロピレン系樹脂(B1)、及び変性プロピレン系樹脂(C1)を含む樹脂組成物(1)を得た。
[実施例2]
[変性プロピレン系樹脂(C2)の調製]
前記製造例1を繰り返し行う事で得られた重合ポリマー1;4.75kg、無水マレイン酸;25g、プライムポリマー社製ポリプロピレン樹脂(C-1)、プライムポリプロ F113G(ホモポリマー、Tm=160℃);0.25kg、及び反応開始剤として、日本油脂株式会社製パーヘキシン25B(1分後半減温度が180℃)12.5gをヘンシェルミキサーを用いてブレンドした。
汎用エンジニアリングプラスチック(A1)として、東レ(株)製 アミランCM1017;2.9kg、プロピレン系樹脂(B1)として、プライムポリマー(株)社製、プライムポリプロ CJ700;1.5kg、および変性プロピレン系樹脂(C2)0.6kgとを、ヘンシェルミキサーを用いてブレンドした。その後、30mmφの二軸押出機を用いてそれらを溶融混練することで、汎用エンジニアリングプラスチック(A1)、プロピレン系樹脂(B1)、及び変性プロピレン系樹脂(C2)を含む樹脂組成物(2)を得た。
[実施例3]
[変性プロピレン系樹脂(C3)の調製]
前記製造例2を繰り返し行う事で得られた重合ポリマー2を使用し、各成分の使用量を 表2に示す量に変更した以外は、実施例2と同様にして行い、変性されたポリプロピレン(C-1)及び変性されたプロピレン・1-ブテン共重合体(C-2)を含む変性プロピレン系樹脂(C3)を得た。得られた変性プロピレン系樹脂(C3)のMFR、密度、及びマレイン酸含有量を表2に示す。
前記変性プロピレン系樹脂(C2)を、前記変性プロピレン系樹脂(C3)に変え、前記汎用エンジニアリングプラスチック(A1)、プロピレン系樹脂(B1)および変性プロピレン系樹脂(C3)の量比を表2に示す量に変更した以外は、実施例2と同様に行い、汎用エンジニアリングプラスチック(A1)、プロピレン系樹脂(B1)、及び変性プロピレン系樹脂(C3)を含む樹脂組成物(3)を得た。
[実施例4~12]
[変性プロピレン系樹脂(C4)~(C12)の調製]
各成分の使用量を表2または3に示す量に変更した以外は、実施例2と同様にして行い、変性されたポリプロピレン(C-1)及び変性されたプロピレン・1-ブテン共重合体(C-2)を含む変性プロピレン系樹脂(C4)~(C12)を得た。得られた変性プロピレン系樹脂(C4)~(C12)のMFR、密度、及びマレイン酸含有量を表2および3に示す。
前記変性プロピレン系樹脂(C2)を、前記変性プロピレン系樹脂(C4)~(C12)に変え、前記汎用エンジニアリングプラスチック(A1)、プロピレン系樹脂(B1)および変性プロピレン系樹脂(C4)~(C12)の量比を表3に示す量に変更した以外は、実施例2と同様に行い、汎用エンジニアリングプラスチック(A1)、プロピレン系樹脂(B1)、及び変性プロピレン系樹脂(C4)~(C12)を含む樹脂組成物(4)~(12)を得た。
[比較例1]
各成分の使用量を表3に示す量に変更した以外は、実施例2と同様にして行い、変性されたポリプロピレン(C-1)及び変性されたプロピレン・1-ブテン共重合体(C-2)を含む変性プロピレン系樹脂(C13)を得た。
また、変性プロピレン系樹脂(C2)を変性プロピレン系樹脂(C13)に変えた以外は実施例2と同様に行い、汎用エンジニアリングプラスチック(A1)、プロピレン系樹脂(B1)、及び変性プロピレン系樹脂(C13)を含む樹脂組成物(13)を得た。
[比較例2]
前記製造例1で得られた重合ポリマー1を、プライムポリマー社製ポリプロピレン樹脂、プライムポリプロ F113G;5kgに変えた以外は、実施例1と同様にして変性プロピレン系樹脂(C14)を得た。得られた変性プロピレン系樹脂(C14)のMFR、密度、及びマレイン酸含有量を表3に示す。
[比較例3]
汎用エンジニアリングプラスチック(A1)である、東レ(株)製 アミランCM1017;3.5kgおよび、プロピレン系樹脂(B1)である、プライムポリマー(株)社製、プライムポリプロ CJ700;1.5kg、を、ヘンシェルミキサーを用いてブレンドした後、30mmφの二軸押出機を用い溶融混練することで、汎用エンジニアリングプラスチック(A1)および、プロピレン系樹脂(B1)を含む樹脂組成物(15)を得た。得られた樹脂組成物(15)の、引張降伏強さ、引張伸び、曲げ強さ、曲げ弾性率、Izod衝撃強度、及び外観を評価した結果を表3に示す。
製造例1で得られた重合ポリマー1の代わりに、エチレン・1-ブテン共重合体(三井化学(株)製、タフマーA-4090)(MFR(190℃、2.16kg)=3.6g/10分、密度=890kg/m3、Tm=77℃)を使用した以外は、実施例1と同様にして変性エチレン・1-ブテン共重合体を得た。得られた変性エチレン・1-ブテン共重合体のMFR、密度、及びマレイン酸含有量を表3に示す。
Claims (11)
- (A)汎用エンジニアリングプラスチック20~80重量%、(B)ポリプロピレン系樹脂10~50重量%および(C)変性プロピレン系樹脂1~30重量%(ただし、前記(A)、(B)および(C)の合計を100重量%とする)を含み、
前記(C)変性プロピレン系樹脂が、示差走査熱量測定(DSC)により測定される融点(Tm)が120℃以上であるポリプロピレン(C-1)0~40重量%、およびDSCにより測定される融点(Tm)が120℃未満またはDSCにより融点ピークが観測されないプロピレンと炭素原子数2または4~10のα-オレフィンとの共重合体(C-2)60~100重量%(ただし、前記(C-1)および(C-2)の合計を100重量%とする)を含む樹脂組成物(C-3)を変性して得られる樹脂であることを特徴とする樹脂組成物。 - 前記(A)汎用エンジニアリングプラスチックが、ポリアミド、ポリエチレンテレフタレートおよびポリブチレンテレフタレートからなる群から選択される少なくとも1種であることを特徴とする請求項1に記載の樹脂組成物。
- 前記(B)ポリプロピレン系樹脂が、プロピレンホモポリマーまたはプロピレンと炭素原子数2または4~10のα-オレフィンとの共重合体であって、示差走査熱量測定(DSC)により測定される融点(Tm)が120℃以上であることを特徴とする請求項1または2に記載の樹脂組成物。
- 前記プロピレンとα-オレフィンとの共重合体(C-2)の融解熱量ΔHが40J/gを超えることを特徴とする請求項1~3のいずれかに記載の樹脂組成物。
- 前記プロピレンとα-オレフィンとの共重合体(C-2)が、プロピレン・1-ブテン共重合体であることを特徴とする請求項1~4のいずれかに記載の樹脂組成物。
- 前記プロピレン・1-ブテン共重合体が、
(1)プロピレンから導かれる構成単位を50~95モル%および1-ブテンから導かれる構成単位を5~50モル%含有し、
(2)ゲルパーミエーションクロマトグラフィー(GPC)により求められる分子量分布(Mw/Mn)が3.0以下であり、
(3)示差走査熱量測定(DSC)により測定される融点(Tm)が110℃以下である かまたはDSCにより融点ピークが観測されないことを特徴とする請求項5に記載の 樹脂組成物。 - 前記プロピレン・1-ブテン共重合体が、
(4)示差走査熱量測定(DSC)により測定される融点(Tm)(℃)と1-ブテンから導かれる構成単位含量(M)(モル%)との関係が
-2.6M+130≦Tm≦-2.3M+155であることを特徴とする請求項6に記載の樹脂組成物。 - 前記(C)変性プロピレン系樹脂が、前記樹脂組成物(C-3)が不飽和カルボン酸またはその誘導体によりグラフト変性されたものであることを特徴とする請求項1~7のいずれかに記載の樹脂組成物。
- 請求項1~8のいずれかに記載の樹脂組成物を成形して得られる成形体。
- 自動車部品または家電部品であることを特徴とする請求項9に記載の成形体。
- (A)汎用エンジニアリングプラスチック20~80重量%および(B)ポリプロピレン系樹脂10~50重量%の相溶化剤として、
示差走査熱量測定(DSC)により測定される融点(Tm)が120℃以上であるポリプロピレン(C-1)0~40重量%、およびDSCにより測定される融点(Tm)が120℃未満またはDSCにより融点ピークが観測されないプロピレンと炭素原子数2または4~10のα-オレフィンとの共重合体(C-2)60~100重量%(ただし、前記(C-1)および(C-2)の合計を100重量%とする)を含む樹脂組成物(C-3)を変性して得られる、
(C)変性プロピレン系樹脂1~30重量%を使用する方法(ただし、前記(A)、(B)および(C)の合計を100重量%とする)。
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JP2015010100A (ja) * | 2013-06-26 | 2015-01-19 | 三井化学株式会社 | ポリアミド樹脂組成物およびそれからなる成形体 |
JP2015071674A (ja) * | 2013-10-02 | 2015-04-16 | 三井化学株式会社 | 樹脂組成物および成形体 |
JPWO2015125802A1 (ja) * | 2014-02-19 | 2017-03-30 | 三井化学株式会社 | グラフト変性プロピレン・α−オレフィン共重合体およびその製造方法 |
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ES2407851T3 (es) | 2013-06-14 |
EP2275493A4 (en) | 2012-01-04 |
JP5473898B2 (ja) | 2014-04-16 |
CN101970579B (zh) | 2014-07-16 |
WO2009119536A9 (ja) | 2010-06-17 |
CN101970579A (zh) | 2011-02-09 |
EP2275493B1 (en) | 2013-02-27 |
EP2275493A1 (en) | 2011-01-19 |
US8609769B2 (en) | 2013-12-17 |
KR101280685B1 (ko) | 2013-07-01 |
JPWO2009119536A1 (ja) | 2011-07-21 |
US20110021706A1 (en) | 2011-01-27 |
KR20100123926A (ko) | 2010-11-25 |
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