WO2001048079A1 - Compositions thermoplastiques de caoutchouc reticule - Google Patents
Compositions thermoplastiques de caoutchouc reticule Download PDFInfo
- Publication number
- WO2001048079A1 WO2001048079A1 PCT/JP2000/009248 JP0009248W WO0148079A1 WO 2001048079 A1 WO2001048079 A1 WO 2001048079A1 JP 0009248 W JP0009248 W JP 0009248W WO 0148079 A1 WO0148079 A1 WO 0148079A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- weight
- crosslinked rubber
- thermoplastic
- rubber composition
- thermoplastic crosslinked
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L15/00—Compositions of rubber derivatives
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
Definitions
- the present invention relates to a thermoplastic crosslinked rubber composition. More specifically, the present invention relates to a thermoplastic crosslinked rubber composition having excellent appearance, feel, heat and light stability, scratch resistance, oil resistance and mechanical strength.
- Radical crosslinkable elastomers and non-radical crosslinkable resins such as polypropylene (PP), and thermoplastic elastomers are crosslinked by melt-kneading in an extruder in the presence of a radical initiator in a so-called dynamic crosslinker.
- PP polypropylene
- dynamic crosslinker One composition is a known technique and is widely used for applications such as automobile parts.
- a olefin-based elastomer produced from ethylene-propylene-gen rubber (Japanese Patent Application Laid-open No. Hei 8-120201, Japanese Patent Laid-Open No. Hei 9-137701) Is known by using a dynamic cross-linking technology using the method described in US Pat.
- a dynamic cross-linking technique using a saturated rubber for example, an olefin-based copolymer rubber is mainly used, a hydrogenated gen-based rubber is additionally used, and a crystalline ⁇ -olefin polymer, an ethylene-based polymer, A dynamically crosslinked elastomer composition containing a softener (Japanese Patent Application Laid-Open No.
- thermoplastic elastomer obtained by melt-mixing in the presence of a cross-linking agent Japanese Patent Application Laid-Open No. 3-22040. Since the above composition does not always have sufficient mechanical strength, scratch resistance, appearance, and heat / light stability, a rubber composition that can withstand practical use is required. Disclosure of the invention
- the present invention has no such problems as described above, that is, a thermoplastic crosslinked rubber excellent in appearance, feel, heat and light stability, scratch resistance, oil resistance and mechanical strength. It is intended to provide a composition.
- the present inventors have surprisingly found that using a hydrogenated rubber having specific crystallinity, the appearance, feel, heat and light stability, scratch resistance, and oil resistance are surprising. It has been found that properties and mechanical strength are dramatically improved.
- the present invention relates to (A) a homopolymer rubber of at least one conjugated gen-based monomer or a random copolymer rubber composed of a conjugated gen-based monomer unit and an aromatic vinyl monomer unit. 1 to 99 parts by weight of a hydrogenated rubber obtained by hydrogenating 50% or more of heavy bonds, and 1 to 99 parts by weight of (B) a thermoplastic resin [The total amount of (A) and (B) is 10 0 parts by weight], wherein the crystallization temperature of (A) by differential scanning calorimetry (DSC) is 150 to 70 ° C.
- the present invention provides the above-mentioned thermoplastic crosslinked rubber composition having a crystallization peak calorie in the range of 3 to 100 JZ g.
- composition of the present invention is a thermoplastic crosslinked rubber composition obtained by crosslinking (A) a hydrogenated rubber having specific crystallinity and (B) a thermoplastic resin.
- the chain structure of ethylene, aromatic vinyl monomer units or other constituent units formed by hydrogenating a conjugated diene monomer unit is random, and (A) is, for example, aromatic vinyl.
- (A) is, for example, aromatic vinyl.
- the block unit and the hydrogenated conjugated gen block unit are used, the crosslinking reaction is suppressed due to the aromatic bulblock unit, and the mechanical strength of the obtained elastomer composition is inferior.
- the bridging reaction proceeds rapidly, and the crosslinked rubber is agglomerated. Appearance and mechanical strength are reduced.
- the crystallization temperature of (A) is in the range of 150 to 70 ° C., and preferably in the range of 130 to 50. It is in the range of C, more preferably 20 to 50. It is in the range of C.
- the crystallization peak calorie of (A) is in the range of 3 to 100 J / g, preferably in the range of 3 to 50 jZg, and more preferably. Or between 5 and 40 J / g.
- a hydrogenated rubber having a crystallization temperature and a crystallization peak calorie in the above ranges it has been found that the rubber composition has an excellent feel and improves appearance, scratch resistance, oil resistance and mechanical strength, and has completed the present invention.
- (A) is a hydrogenated rubber of at least one kind of conjugated homopolymer or a random copolymer rubber composed of a covalent monomer unit and an aromatic vinyl monomer unit. And, if necessary, include units of monomers that can be copolymerized with conjugated gens, such as, for example, olefin-based, methacrylate-based, acrylate-based, unsaturated nitrile-based, and vinyl chloride-based monomers. Can be made.
- the conjugated diene monomers include 1,3-butadiene, isoprene, 2,3
- aromatic vinyl monomer examples include styrene, ⁇ -methylstyrene, ⁇ -methinolestyrene, t-butylinolestyrene, divininolebenzene, N, N-dimethinole p-aminoethylstyrene, and vinylpyridine. Styrene, ct-methylstyrene is preferred.
- the above aromatic monomers can be used alone or in combination of two or more.
- the amount of the aromatic vinyl monomer in (A) is preferably 0 to 80% by weight, more preferably 0 to 50% by weight, and most preferably 0 to 30% by weight.
- the vinyl bond in the (A-conjugated diene monomer portion before hydrogenation may be uniformly present in the molecule, may be increased or decreased along the molecular chain, or In the case where an aromatic vinyl monomer unit or a unit of a monomer copolymerizable with the conjugated diene monomer is included, these blocks may be included. Are randomly bonded in the conjugated diene monomer portion, but the block-like aromatic vinyl monomer unit or May contain other monomer units: Block The content of the aromatic vinyl polymer unit in the form is preferably 20% by weight or less, more preferably 10% by weight or less, based on the total aromatic vinyl monomer units.
- the double bond is 5% or less
- the residual double bond in the side chain is 5% or less.
- a rubber include a gen-based rubber such as polybutadiene, polyisoprene, and polychloroprene, or a copolymer-like rubber such as poly (styrene-butadiene) partially or completely hydrogenated.
- the polymer include a hydrogenated butadiene rubber, a hydrogenated poly (styrene-butadiene) rubber, and a hydrogenated isoprene rubber.
- the hydrogenation of the double bond in the present invention is for a conjugated diene monomer unit and is not applied to an aromatic vinyl monomer unit.
- Such a hydrogenated rubber (A) can be obtained by partially hydrogenating the aforementioned rubber by a known hydrogenation method.
- a hydrogenation method for example, F. Shi Ramp, etal, J. Amer. Chem.
- the crystallization temperature or crystallization peak calorie which is an index of the crystallinity of (A), is controlled by adding a polar compound such as tetrahydrofuran or controlling the polymerization temperature. Reduction of the crystallization peak calorie can be achieved by increasing the amount of polar compound or decreasing the polymerization temperature to increase the 1,2-vinyl bond.
- 100 of hydrogenated rubber (A) 100 of hydrogenated rubber (A).
- the Mooney viscosity (ML) measured at C is 20 to 150, 5 weight at 25 ° C / 0 .
- the styrene solution viscosity (5% SV) is in the range of 20-300 centivoise (cps). A particularly preferred range is 25 to 150 cps.
- hydrogenated rubber (A1) in which the amount of aromatic vinyl monomer units is 5% by weight or less and hydrogen in which the amount of aromatic vinyl monomer units is 5% by weight or more and 90% by weight or less
- A-1 and (A-2) in which the amount of aromatic vinyl monomer units is 5% by weight or more, the appearance and heat ⁇ Improvement of light stability, scratch resistance, oil resistance and mechanical strength.
- (A-2) in the hydrogenated rubber consisting of (A-1) and (A-2) has a weight of 1-99 weights 0 /. And more preferably 10 to 99 weight. /. Most preferably, it is 20 to 80% by weight.
- thermoplastic resin (B) is not particularly limited as long as it can be uniformly dispersed in (A).
- polystyrene, polyphenylene ether, polyolefin, polyvinyl chloride, polyamide, polyester, polyphenylene sulfide, polycarbonate, polymethacrylate, etc., or a mixture of two or more of them Can be used.
- a propylene-based random copolymer resin such as a random copolymer resin of airlene and propylene alone, or ( ⁇ -1) and ( ⁇ -2) a propylene-based block.
- a combination with a copolymer resin or a homopolypropylene resin is preferred.
- the appearance and the mechanical strength are further improved by combining the two types of the olefinic resins, ie, the (II-1) cross-linked olefin resin and the (II-2) degradable olefin resin.
- ( ⁇ -1) is, for example, a random copolymer resin of ethylene and propylene.
- the ethylene component When the ethylene component is present in the polymer main chain, it becomes a cross-linking reaction cross-linking point, exhibiting the properties of a cross-linked olefin resin.
- (B-2) contains ctrefin as a main component and does not contain an ethylene unit in the polymer main chain.
- an ethylene- ⁇ -olefin copolymer is present as a dispersed phase, such as a propylene-based block copolymer resin, it exhibits the properties of a degradable olefin resin.
- ( ⁇ ) may be a combination of a plurality of ( ⁇ -1) and ( ⁇ -2) components.
- the most preferred random copolymer resin with propylene units mainly composed of propylene units can be produced by a high pressure method, a slurry method, a gas phase method, a bulk method, a solution method, or the like.
- a polymerization catalyst a Ziegler-Natta catalyst, a single-site catalyst, and a metallocene catalyst are preferable.
- a random copolymerization method using a meta-mouth catalyst is preferred.
- a specific method for producing a random copolymer resin is disclosed in EP0969043A1 or US Pat. No. 5,1984,801. After introducing liquid propylene into a reactor equipped with a stirrer, a catalyst is added from a nozzle to a gas phase or a liquid phase. Next, ethylene gas or ⁇ -olefin is introduced into the gas phase or liquid phase of the reactor, and the reaction temperature and the reaction pressure are controlled so that propylene is refluxed. The polymerization rate is controlled by the catalyst concentration and the reaction temperature, and the copolymer composition is controlled by the amount of ethylene or ⁇ -olefin.
- the melt index of the olefin resin preferably used in the present invention is from 0.1 to :! Those in the range of O O gZl O (230 ° C, 2.16 kg load) are preferably used. If the amount exceeds 100 g / 1 ⁇ min, the heat resistance and mechanical strength of the thermoplastic elastomer composition will be insufficient, and if it is less than 0.1 g Z 10 minutes, the flowability will be poor and the moldability will be poor. Decreased hope 3; Not good.
- (B) is 1 to 99 parts by weight, preferably 10 to 90 parts by weight, more preferably 20 to 80 parts by weight. Parts, most preferably 30 to 70 parts by weight. If the amount is less than 1 part by weight, the fluidity and processability of the composition tend to decrease, while if it exceeds 99 parts by weight, the flexibility of the composition tends to decrease.
- one of the preferable thermoplastic resins (B) is a styrene resin.
- a styrene resin Is a rubber-unmodified styrene resin and / or a rubber-modified styrene resin.
- the rubber-unmodified styrenic resin is a homopolymer or a copolymer of two or more aromatic vinyl monomers described in (A).
- atalylonitrile, metatarilyl Unsaturated nitrile monomers such as nitriles, acrylates or methacrylates consisting of an alkyl group having 1 to 8 carbon atoms, some are acrylic acid, methacrylic acid, maleic anhydride, N-substituted maleimide And the like.
- the rubber-modified styrene-based resin is a resin in which a rubber-like polymer is dispersed in a matrix composed of a rubber-unmodified styrene-based resin, and an aromatic vinyl monomer is present in the presence of the rubber-like polymer. It can be obtained by adding a monomer and, if necessary, a vinyl monomer copolymerizable therewith, and subjecting the monomer mixture to known polymerization such as bulk polymerization, emulsion polymerization and suspension polymerization.
- Examples of such rubber-modified styrenic resins include impact-resistant polystyrene (HIPS), ABS resin (acrylonitrile-butadiene-styrene copolymer), AAS resin (acrylonitrile-acrylic rubber-styrene copolymer), AES tree month (acrylonitrile-ethylene propylene rubber-styrene copolymer).
- HIPS impact-resistant polystyrene
- ABS resin acrylonitrile-butadiene-styrene copolymer
- AAS resin acrylonitrile-acrylic rubber-styrene copolymer
- AES tree month acrylonitrile-ethylene propylene rubber-styrene copolymer
- Preferred combinations as (B) include polyethylene alone, polypropylene alone, polystyrene alone, a combination of polypropylene and polyethylene, a combination of polypropylene and polystyrene, and a hydrogenation as a compatibilizer mainly in a blend of polypropylene and polystyrene.
- a thermoplastic resin blended with a styrene-conjugated diene monomer block copolymer may be used.
- the rubber composition of the present invention is preferably crosslinked with a crosslinking agent (C).
- C contains (C-1) a crosslinking initiator as an essential component, and contains (C-12) a multifunctional monomer and (C-13) a monofunctional monomer as necessary.
- the above (C) is used in an amount of 0.01 to 10 parts by weight, preferably 0.05 to 3 parts by weight, based on 100 parts by weight of the total of (A) and (B). If the amount is less than 0.01 part by weight, the crosslinking is insufficient, and if it exceeds 10 parts by weight, the appearance and mechanical strength of the composition tend to decrease.
- examples of the (C-11) crosslinking initiator include radical initiators such as organic peroxides and organic azo compounds, and specific examples thereof include 1,1-bis (t-butylbenzyloxy).
- hydroperoxides such as t-butyl hydroperoxide, tamenhydr dropoperoxide, diisopropylbenzene hydroperoxide, 2,5-dimethylhexane-1,2,5-dihydroperoxide and 1,1,3,3-tetramethylbutyl hydroperoxide. And the like.
- the (C-1) is used preferably 1 to 8 0 wt 0/0, more preferably in an amount of 1 0-5 0% by weight (C) component. If it is less than 1% by weight, crosslinking is insufficient, and if it exceeds 80% by weight, the mechanical strength decreases.
- one of the (C 2) polyfunctional monomers of the (C) crosslinking agent is preferably a radically polymerizable functional group as a functional group, and particularly preferably a vinyl group.
- the number of functional groups is 2 or more, it is effective especially when the compound has three or more functional groups in combination with (C 3).
- divinylbenzene triallyl isocyanurate, triaryl cyanurate, diacetone diacrylamide, polyethylene glycol diacrylate, polyethylene glycolone resin methacrylate, trimethylolpropane trimethacrylate, trimethylolpropane triacrylate, Ethylene glycol dimethacrylate, triethylene glyconoresin methacrylate, diethyleneglyconoresin methacrylate, diisopropininolebenzene, p-quinonedioxime, p, p'-dibenzoylquinonedioxime, phenylmaleimide, arylmethacrylate, N , ⁇ '-m phenylene bismaleide, diarylphthalate, tetraaryloxetane, 1,2-polybutadiene, etc. are preferably used.
- triaryl isocyanurate is preferable.
- These polyfunctional monomers may be used in combination of two or more.
- (C 2) is preferably used in an amount of 1 to 80% by weight, more preferably 10 to 50% by weight, in the component (C). If it is less than 1% by weight, crosslinking is insufficient, and if it exceeds 80% by weight, the mechanical strength decreases.
- the (C 3) used in the present invention is a vinyl monomer added for controlling the rate of a crosslinking reaction, and is preferably a radical polymerizable vinyl monomer, and is preferably an aromatic vinyl monomer or acrylonitrile. , Methacrylonitrile and other unsaturated nitrile monomers, acrylate monomers, methacrylate monomers, acrylate monomers, methacrylate monomers, maleic anhydride monomers, N-substituted maleimi Do single quantity And the like.
- (C-3) is preferably 1 to 80% by weight of the component (C). /. More preferably, an amount of from 10 to 50% by weight is used. If it is less than 1% by weight, crosslinking is insufficient, and if it exceeds 80% by weight, the mechanical strength decreases.
- the above (D) is preferably a paraffinic or naphthenic process oil. These are used for adjusting the hardness and flexibility of the composition, and 5 to 500 parts by weight, preferably 10 to 150 parts by weight, based on 100 parts by weight of the total of (A) and (B). Use parts. If the amount is less than 5 parts by weight, flexibility and workability are insufficient, and if it exceeds 500 parts by weight, oil bleeding becomes remarkable, which is not desirable.
- a rubbery polymer other than (A) can be compounded, if necessary, with (A) as a main component, and its compounding amount is a total of 100% by weight of (A) and (B).
- the amount is preferably 1 to 100 parts by weight, more preferably 1 to 50 parts by weight, and most preferably 5 to 50 parts by weight with respect to parts.
- a method of compounding the rubber-like polymer a method of mixing and crosslinking simultaneously with (A) and (B), or after the crosslinking reaction of (A) and (B), adding a rubber-like polymer other than (A) There is a method of mixing.
- Such a rubber-like polymer is, for example, a copolymer of ethylene and ⁇ -olefin containing ethylene and ⁇ -olefin having 3 to 20 carbon atoms, and as a monoolefin having 3 to 20 carbon atoms.
- Examples include propylene, butene-1, pentene1, octene1, and the like. It is preferable to produce such an ethylene-diolefin copolymer using a known metallocene catalyst.
- a polystyrene-based thermoplastic elastomer is preferable, and a block copolymer comprising an aromatic phenyl unit and a conjugated gen unit, or the above conjugated polymer Block copolymers in which the gen unit is partially hydrogenated or epoxy-modified are mentioned.
- the aromatic vinyl monomer constituting the block copolymer is, for example, styrene, monomethyl styrene, ⁇ -methyl styrene, ⁇ -chlorostyrene, ⁇ -bromostyrene, 2,4,5 tribromostyrene. Styrene is most preferred, but the above-mentioned other aromatic vinyl monomers may be copolymerized mainly with styrene. Further, examples of the conjugated diene monomer constituting the block copolymer include 1,3-butadiene and isoprene.
- a polymer block composed of aromatic vinyl units is represented by S
- a polymer block composed of conjugated gen and Z or a partially hydrogenated unit thereof is represented by B.
- (Star) It is preferably a block copolymer. Above all, preferred are linear block copolymers of type 2 of SB, type 3 of SBS, and type 4 of SBSB.
- a polyorganosiloxane having a kinematic viscosity of 5000 centistokes or more at 25 ° C. specified by JIS-K 2410 can be added as necessary.
- the polyorganosiloxane has a viscous syrup-like to gum-like form, and is not particularly limited as long as it is a polymer containing an alkyl, vinyl and / or aryl-substituted siloxane unit. Among them, polydimethylsiloxane is most preferred.
- the kinematic viscosity (25 ° C) of the polyorganosiloxane used in the present invention is 5000 CS or more, more preferably 10,000 CS or more and less than 100,000, and most preferably 50,000 CS or more and less than 100,000. .
- the addition amount of the polyorganosiloxane is preferably 0.01 to 20 parts by weight, more preferably 0 to 20 parts by weight, based on 100 parts by weight of the total of (A) and (B). It is 1 to 10 parts by weight, most preferably 0.5 to 5 parts by weight.
- the composition of the present invention can contain an inorganic filler and a plasticizer to such an extent that the characteristics thereof are not impaired.
- the inorganic filler used here includes, for example, calcium carbonate, magnesium carbonate, silica, carbon black, glass fiber, titanium oxide, clay, Myriki, Tanorek, magnesium hydroxide, aluminum hydroxide and the like.
- the plasticizer include phthalic acid esters such as polyethylene glycol and octyl phthalate (DOP).
- DOP octyl phthalate
- Other additives such as organic and inorganic pigments, heat stabilizers, antioxidants, ultraviolet absorbers, light stabilizers, flame retardants, silicone oils, antiblocking agents, foaming agents, antistatic agents, antibacterial agents, etc. are also suitable. Used for
- a general method such as a Banbury mixer, a kneader, a single-screw extruder, a twin-screw extruder and the like used in the production of an ordinary resin composition and an elastomer composition should be employed. Is possible.
- a twin-screw extruder is preferably used. The twin-screw extruder disperses (A) and (B) uniformly and finely, and further adds other components to cause a crosslinking reaction, thereby continuously producing the composition of the present invention. Are suitable.
- the composition of the present invention can be produced through the following processing steps. That is, (A) and (B) are mixed well and put into a hopper of an extruder. (C) The crosslinking agent may be added together with (A) and (B) from the beginning, or may be added from the middle of the extruder. Further, (D) may be added from the middle of the extruder, or may be added separately from the beginning and the middle. Part of (A) and (C) may be added in the middle of the extruder.
- the above (A) and (C) cross-linking agent undergo a cross-linking reaction, and further (D) and the like are added and melt-kneaded, whereby the cross-linking reaction and kneading dispersion are sufficiently performed. Then, the pellet is taken out of the extruder to obtain a pellet of the composition of the present invention.
- a twin-screw extruder having a length L in the die direction from the raw material addition section and having an L / D of 5 to 100 (where D is a barrel diameter) is used.
- the twin-screw extruder has a plurality of supply portions, a main feed portion and a side feed portion, which are different in distance from the tip portion, and is provided between a plurality of the supply portions and an upper-d tip portion. It is preferable that a kneading portion is provided between the supply portion and a short distance from the distal end portion, and the length of the kneading portion is 3D to 10D, respectively.
- the twin-screw extruder may be a twin-screw co-rotating extruder or a twin-screw different-direction rotating extruder.
- screw engagement there are a non-engagement type, a partial engagement type, and a complete engagement type, and any type may be used.
- a different-direction rotating / partially mating type screw is preferable.
- a co-rotating / completely mating type screw is preferable.
- even larger kneading is required.
- the morphology of the composition comprising the components (A) and (B) is also important, particularly for improving the appearance and the mechanical strength, and the weight average particle diameter of the component (A) is 0.01. 33 ⁇ m, and the number average of the ratio d 1 Z d 2 between the major particle diameter d 1 and the minor particle diameter d 2 is preferably 1 to 3. It is necessary that the component (A) exists as independent particles and the component (B) must be a continuous phase. For this purpose, for example, it is important to suppress the crosslinking rate under high shear force. .
- this can be achieved by reducing the amount of the crosslinking initiator or the crosslinking assistant and performing a reaction at a temperature as low as possible and longer than the decomposition temperature of the crosslinking initiator. It can also be achieved by using a polyfunctional monomer and a monofunctional monomer in combination as a crosslinking aid. Excessive addition of a crosslinking initiator or a crosslinking aid, or excessively high activity of a crosslinking initiator, a crosslinking aid, or a high-temperature reaction condition causes aggregation of the rubber-like polymer and does not satisfy the requirements of the present application.
- a crosslinking initiator and a crosslinking assistant to (A) while preliminarily absorbing a small amount of (D) a softening agent in (A), the crosslinking reaction proceeds gently. Uniform particles can be generated.
- the degree of crosslinking of (A) is preferably 1 to 95%, and the degree of swelling is preferably 3 to 100%.
- the degree of swelling is 3-20, most preferably 3-10.
- the total volume of the particles of 0.01 to 3 ⁇ m in (A) is 10% or less, more preferably 5% or less, most preferably 3% or less.
- (A) is a large particle and a non-uniform particle, and therefore, it is important to increase the melt viscosity ratio of (A) and (B). . It can also be achieved by increasing the rate of crosslinking. Specifically, (B) having a lower molecular weight than that of (A) is used. In addition, this can be achieved by increasing the amount of the crosslinking initiator or the crosslinking assistant and performing the reaction at a temperature as high as possible and for a long time as high as the decomposition temperature of the crosslinking initiator or more. In addition, a polyfunctional monomer is used as a crosslinking aid.
- a trifunctional monomer is more preferable than a bifunctional monomer.
- excessive addition of a crosslinking initiator or a crosslinking aid, or addition of an excessively active crosslinking initiator or a crosslinking aid, or high-temperature reaction conditions may cause aggregation of the rubber-like polymer, and the requirements of the present application may be reduced. May not be satisfied.
- L / D is a D 3 (N / Q) force S 1 0 X 1 0 D ⁇ M ⁇ 1 0 0 0 X 1 0 6.
- M rubber particles fertilizer Dahua less than 1 0 X 1 0 6 appearance is lowered in order to aggregate, whereas M is due to excessive shear forces exceeds 1 0 0 0 X 1 0 ° , mechanical Strength decreases.
- melt extrusion especially with a length L in the die direction raw material addition port as a base point
- T 2 melting temperature
- T 3 melting temperature
- the extruder zone with a length of 0.1 L to 0.5 L from the raw material addition port is first melt-kneaded at the melting temperature T 2 (° C), and then the subsequent extruder zone is melted.
- the temperature is preferably 150 to 250 ° C.
- T or T 2 in each zone of the melt extruder may have a uniform temperature or may have a temperature gradient.
- the rubber composition thus obtained can be used to produce various molded articles by any molding method. Injection molding, extrusion molding, compression molding, blow molding, calender molding, foam molding, etc. Is preferably used.
- test methods used for evaluating various physical properties are as follows.
- the crystallization temperature is the peak top temperature (° C)
- the crystallization peak calorie J / g was calculated from the peak area surrounded by the curve showing the change in calorific value changed from the baseline.
- the curve includes either a broad curve or a sharp curve.
- the peak top temperature refers to the intersection of a straight line parallel to the baseline and the tangent to the curve showing the change in calorific value.
- the composition After measuring the weight W 0 of (A) in the composition in advance, the composition is refluxed in 20 Om 1 of xylene for 20 hours, the solution is filtered with a filter, and the weight of the swollen composition is
- the particle size and particle volume of the rubber-like polymer are calculated by the following method for each particle of the 500 rubber-like polymers in the transmission electron micrograph taken by the ultrathin section method of the composition. It is obtained by doing. That is, for the particle diameter of each particle, the area S of each particle is obtained, and (4S / 7C) ° -3 is used as the particle diameter of each particle using S.
- the weight-average particle diameter is used as the average particle diameter, and the particle shape is represented by a ratio d1Zd2 of the particle major axis d1 and the particle minor axis d2.
- the particle volume defined by S 5 of 3Z2 power of the particle surface area S, the total particle volume is expressed by the sum of the particle volume.
- DSC method differential scanning calorimetry
- the melting point is the peak top temperature (° C)
- the calorific value of the melting point (j / g) was calculated from the peak area surrounded by the curve showing the change in calorific value changed with respect to the baseline.
- the curve includes either a broad curve or a sharp curve.
- the peak top temperature is the intersection of a straight line parallel to the baseline and the tangent to the curve showing the change in calorific value.
- a composition having a weight ratio of polyolefin resin / POX / DVB 100 / 0.67 / 1.33 was used at a set temperature of 200 ° C and a rotational speed of 100 rpm. Melt and knead under the conditions described above for 10 minutes. When a pellet in a pellet state is injected into a Labo Plastomill, it changes from a pellet state to a semi-molten state, and finally to a molten state without retaining its shape. the polypropylene resins having characteristics that there is a higher torque than M 0 after immediately defined as cross-linked, while defining a polypropylene resin having a characteristic in the torque condition of the following Mo since immediately after the melting and decomposition type .
- the sample was kept at 200 ° C for 1 hour under a nitrogen stream, and the retention rate (%) based on the initial weight was used as a measure of thermal stability.
- the appearance was evaluated based on the following criteria from the surface of the extruded sheet or the surface of the injection molded body.
- Weight change rate (Wi -W 0 ) / W 0 X 100 (%)
- ⁇ The oily substance is slightly attached to the surface of the molded product.
- the evaluation was performed using a Gakushin type abrasion tester.
- the evaluation conditions are as follows.
- Evaluation is based on the number of times of reciprocating friction until the surface roughness of the molded product disappears.
- a 1 mm thick sheet is brought into contact with a rectangular mold with a square bottom of 15 cm and a depth of 5 cm, and heated by an infrared heater until the surface of the sheet reaches 140 ° C.
- a molded article was prepared below. The mold reproducibility and transferability of the obtained molded body were visually evaluated according to the following criteria.
- butadiene Zn—Hexane solution (butadiene concentration: 2 ° by weight /.) was converted into n— at a rate of 20 liters / hr using an autoclave equipped with a stirrer and a jacket having an internal volume of 10 liters as a reactor.
- butyllithium / n-hexane solution (concentration 5 by weight. / 0) were introduced in 70 milli liters / hr, respectively, which are also carried out continuous polymerization butadiene polymerization temperature 1 1 0 ° C.
- the obtained active polymer was deactivated with methanol, and 8 liters of the polymer solution was transferred to another 10-liter reactor equipped with a stirrer and jacket, and heated at a temperature of 60 ° C as a hydrogenation catalyst.
- p-Tolylbis (1-cyclopentagenyl) titanium Z cyclohexane solution concentration: 1 milliliter Z liter
- the crystallization peak calorie is controlled by adding the polar compound tetrahydrofuran (THF) or controlling the polymerization temperature. Reduction of the crystallization peak calorie can be achieved by lowering the force for increasing the amount of the polar compound or the polymerization temperature. Then, the hydrogenated styrene-butadiene copolymer is obtained by further adding styrene and performing polymerization in the same manner as in the above production method.
- THF polar compound tetrahydrofuran
- the ethylene / otaten-11 composition ratio of the copolymer is 72Z28 (weight ratio) (referred to as TPE-1).
- TPE-2 Copolymer of ethylene and octene-1 (TPE-2) It was prepared by a method using an ordinary Ziegler catalyst.
- the ethylene / octene-11 composition ratio of the copolymer is 72Z28 (weight ratio) (referred to as TPE-2).
- EOB Ethylene 'propylene' ethylidene norbornene copolymer
- composition ratio of ethylene Z propylene ZENB of the copolymer is 72Z24 / 4 (weight ratio) (referred to as TPE-3).
- Flexural modulus 1 8000 kgf / cm 2 ; Melting point by DSC method: 162 ° C; Heat value of melting point: 81 jZg
- Flexural modulus 12000 kg fZcm 2 ; Melting point by DSC method: 163 ° C; Calorific value of melting point: 67 J / g
- Flexural modulus 6000 kgf / cm 2 ; Melting point by DSC method: 130 ° C; Calorific value of melting point: 45 J / g
- TIC Triallyl isocyanurate
- Methyl methacrylate (referred to as MMA)
- Polyorganosiloxanes having different kinematic viscosities were obtained according to a known technique, for example, Chapter 17 of the Silicone Handbook (edited by Nikkan Kogyo Shimbun, Kunio Ito (1990)).
- thermoplastic resin particularly improves the scratch resistance.
- Example 4 changes the TA IC in Table 5 (C one 1) ⁇ (C- 3), further in accordance with the following definitions, at a melt temperature T 2 (° C), first kneading The same experiment was repeated except that the melt kneading was performed at the melting temperature T 3 (° C). Table 5 shows the results. When (C-12) and (C-13) were used in combination, both were used in equal amounts.
- Example 4 In Example 4, ( ⁇ ) in Table 6 was used, and the quantitative ratio of ⁇ 1, TA IC was determined. The same experiment was repeated except that the degree of crosslinking and the degree of swelling were controlled by changing. Table 6 shows the results.
- Example 4 the same experiment was repeated except that (A) and (B) in Table 7 were used, and that a rubbery polymer other than (A) was added.
- Table 7 shows the results. According to Table 7, when the amount of the rubbery polymer other than (A) is equal to or less than that of (A), the appearance, heat and light stability, scratch resistance, oil resistance and mechanical strength are excellent. You can see that.
- Example 4 the same experiment was repeated except that the two components (A-1) and (A-2) in Table 8 were used. Table 8 shows the results.
- Example 4 the same experiment was repeated except that the (A) component in Tables 9 and 10 was used and the rubber particle shape in (A) was controlled. The results are shown in Tables 9 and 10.
- Example 4 the same experiment was repeated except that the polydimethylsiloxane shown in Table 11 was used. Table 11 shows the results.
- thermoplastic crosslinked rubber composition of the present invention has excellent appearance, feel, heat, light stability, scratch resistance, oil resistance, and mechanical strength, and is used for automobile parts, automobile interior materials, and airbags. It can be widely used for applications such as covers, mechanical parts, electrical parts, cables, hoses, belts, toys, sundries, daily necessities, building materials, sheets, films, etc., and plays a large role in the industrial world.
- table 1
- Weight average particle size ( ⁇ 0.001 0.01 1.0 3.0 3.5 2.0
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001548610A JP3571028B2 (ja) | 1999-12-27 | 2000-12-26 | 熱可塑性架橋ゴム組成物 |
DE60037273T DE60037273T2 (de) | 1999-12-27 | 2000-12-26 | Thermoplastische vernetzte kautschukzusammensetzungen |
EP00987746A EP1243615B1 (en) | 1999-12-27 | 2000-12-26 | Thermoplastic crosslinked rubber compositions |
US09/929,489 US6555624B2 (en) | 1999-12-27 | 2001-08-15 | Thermoplastic crosslinked rubber composition |
US10/390,708 US7488776B2 (en) | 1999-12-27 | 2003-03-19 | Thermoplastic crosslinked rubber composition |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP37042499 | 1999-12-27 | ||
JP11/370424 | 1999-12-27 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/929,489 Continuation-In-Part US6555624B2 (en) | 1999-12-27 | 2001-08-15 | Thermoplastic crosslinked rubber composition |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001048079A1 true WO2001048079A1 (fr) | 2001-07-05 |
Family
ID=18496882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/009248 WO2001048079A1 (fr) | 1999-12-27 | 2000-12-26 | Compositions thermoplastiques de caoutchouc reticule |
Country Status (5)
Country | Link |
---|---|
US (2) | US6555624B2 (ja) |
EP (1) | EP1243615B1 (ja) |
JP (1) | JP3571028B2 (ja) |
DE (1) | DE60037273T2 (ja) |
WO (1) | WO2001048079A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7863378B2 (en) | 2006-08-31 | 2011-01-04 | Asahi Kasei Chemicals Corporation | Thermoplastic elastomer composition and modifier composition using the same |
WO2019111496A1 (ja) * | 2017-12-05 | 2019-06-13 | 株式会社ブリヂストン | 共重合体、ゴム組成物、樹脂組成物、タイヤ及び樹脂製品 |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5443661B2 (ja) * | 2000-08-22 | 2014-03-19 | 中国石油化工股▲分▼有限公司 | 強化されたプラスチック及びその調製 |
US6800693B2 (en) * | 2002-12-13 | 2004-10-05 | Asahi Kasei Kabushiki Kaisha | Olefin polymer composition |
US7291677B2 (en) * | 2003-12-15 | 2007-11-06 | Solvay Engineered Polymers, Inc. | Adherent, modified thermoplastic elastomeric blends, articles, and methods |
JP4449474B2 (ja) * | 2004-02-03 | 2010-04-14 | 住友化学株式会社 | 変性ポリオレフィン樹脂の製造方法及び変性ポリオレフィン樹脂 |
US7612001B2 (en) | 2004-12-22 | 2009-11-03 | Kimberly-Clark Worldwide, Inc. | High performance elastic materials made using styrene block copolymers and mixtures |
US20070021564A1 (en) * | 2005-07-13 | 2007-01-25 | Ellul Maria D | Peroxide-cured thermoplastic vulcanizates |
US7872075B2 (en) * | 2005-10-07 | 2011-01-18 | Exxonmobil Chemical Patents Inc. | Peroxide-cured thermoplastic vulcanizates and process for making the same |
US8399368B2 (en) * | 2007-10-16 | 2013-03-19 | Kimberly-Clark Worldwide, Inc. | Nonwoven web material containing a crosslinked elastic component formed from a linear block copolymer |
US7923391B2 (en) * | 2007-10-16 | 2011-04-12 | Kimberly-Clark Worldwide, Inc. | Nonwoven web material containing crosslinked elastic component formed from a pentablock copolymer |
US7923392B2 (en) * | 2007-10-16 | 2011-04-12 | Kimberly-Clark Worldwide, Inc. | Crosslinked elastic material formed from a branched block copolymer |
US8349963B2 (en) * | 2007-10-16 | 2013-01-08 | Kimberly-Clark Worldwide, Inc. | Crosslinked elastic material formed from a linear block copolymer |
PT104150A (pt) * | 2008-07-31 | 2010-02-01 | Inst Superior Tecnico | Processo de revestimento de grânulos de borracha por filme polimérico e grânulos de borracha revestidos e obtidos por este processo |
TWI385206B (zh) * | 2009-10-28 | 2013-02-11 | Taiwan Textile Res Inst | 無融滴阻燃母粒、用以製備該阻燃母粒的組成物與方法以及包含該阻燃母粒的阻燃物 |
US9169396B2 (en) * | 2011-01-19 | 2015-10-27 | TPS TechnoPartner Samtronic GmbH | Polymer-bound web as well as method for its production |
US11566129B2 (en) * | 2019-11-06 | 2023-01-31 | Kuraray Co., Ltd. | Thermoplastic elastomer composition |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08188700A (ja) * | 1995-01-12 | 1996-07-23 | Kuraray Co Ltd | 熱可塑性樹脂組成物 |
JPH09302456A (ja) * | 1996-03-14 | 1997-11-25 | Daido Hoxan Inc | 高耐蝕性金属製品およびその製法 |
JPH11140298A (ja) * | 1997-11-12 | 1999-05-25 | Mitsubishi Eng Plast Corp | 制振性に優れたoa機器部品用成形体 |
JP2000007904A (ja) * | 1998-06-25 | 2000-01-11 | Mitsubishi Eng Plast Corp | 制振性に優れたoa機器部品用成形体 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4250273A (en) * | 1977-06-13 | 1981-02-10 | The Firestone Tire & Rubber Company | Thermoplastic elastomer blends |
US4197377A (en) * | 1977-06-13 | 1980-04-08 | The Firestone Tire & Rubber Company | Thermoplastic elastomer compositions |
US4226952A (en) * | 1979-08-20 | 1980-10-07 | The Firestone Tire & Rubber Company | Thermoplastic elastomer blends of alpha-olefin polymers and hydrogenated medium and high vinyl butadiene polymers |
JPH0739501B2 (ja) * | 1987-06-23 | 1995-05-01 | 日本スチレンペ−パ−株式会社 | 無架橋直鎖状低密度ポリエチレン予備発泡粒子 |
IT1223262B (it) * | 1987-12-11 | 1990-09-19 | Himont Inc | Composizioni elasto plastiche e procedimento per la loro preparazione |
JP2737251B2 (ja) | 1989-05-30 | 1998-04-08 | ジェイエスアール株式会社 | 熱可塑性エラストマー組成物 |
JPH0332240A (ja) | 1989-06-29 | 1991-02-12 | Nec Corp | 信号線モニタ方式 |
US5216074A (en) * | 1989-07-17 | 1993-06-01 | Japan Synthetic Rubber Co., Ltd. | Thermoplastic elastomer composition |
TW273561B (ja) * | 1993-10-21 | 1996-04-01 | Sumitomo Bakelite Co | |
JPH08120127A (ja) | 1994-10-20 | 1996-05-14 | Mitsui Toatsu Chem Inc | 熱可塑性エラストマー組成物 |
KR100432548B1 (ko) * | 1995-06-20 | 2004-09-10 | 스미또모 가가꾸 고오교오 가부시끼가이샤 | 열가소성엘라스토머조성물과그것의성형체 |
JP3945543B2 (ja) | 1995-11-13 | 2007-07-18 | 三井化学株式会社 | オレフィン系熱可塑性エラストマー組成物 |
JP3601185B2 (ja) | 1996-05-08 | 2004-12-15 | Jsr株式会社 | 熱可塑性エラストマー組成物 |
KR19990029014A (ko) * | 1996-05-15 | 1999-04-15 | 고사이 아끼오 | 열가소성 엘라스토머 조성물 파우더 및 이를 성형하여수득한 성형체 |
WO1999029775A1 (fr) * | 1997-12-11 | 1999-06-17 | Sumitomo Chemical Company, Limited | Composition d'elastomere thermoplastique, poudre, pastilles et articles moules |
-
2000
- 2000-12-26 JP JP2001548610A patent/JP3571028B2/ja not_active Expired - Lifetime
- 2000-12-26 WO PCT/JP2000/009248 patent/WO2001048079A1/ja active IP Right Grant
- 2000-12-26 DE DE60037273T patent/DE60037273T2/de not_active Expired - Lifetime
- 2000-12-26 EP EP00987746A patent/EP1243615B1/en not_active Expired - Lifetime
-
2001
- 2001-08-15 US US09/929,489 patent/US6555624B2/en not_active Expired - Lifetime
-
2003
- 2003-03-19 US US10/390,708 patent/US7488776B2/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08188700A (ja) * | 1995-01-12 | 1996-07-23 | Kuraray Co Ltd | 熱可塑性樹脂組成物 |
JPH09302456A (ja) * | 1996-03-14 | 1997-11-25 | Daido Hoxan Inc | 高耐蝕性金属製品およびその製法 |
JPH11140298A (ja) * | 1997-11-12 | 1999-05-25 | Mitsubishi Eng Plast Corp | 制振性に優れたoa機器部品用成形体 |
JP2000007904A (ja) * | 1998-06-25 | 2000-01-11 | Mitsubishi Eng Plast Corp | 制振性に優れたoa機器部品用成形体 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1243615A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7863378B2 (en) | 2006-08-31 | 2011-01-04 | Asahi Kasei Chemicals Corporation | Thermoplastic elastomer composition and modifier composition using the same |
WO2019111496A1 (ja) * | 2017-12-05 | 2019-06-13 | 株式会社ブリヂストン | 共重合体、ゴム組成物、樹脂組成物、タイヤ及び樹脂製品 |
EP3722339A4 (en) * | 2017-12-05 | 2021-09-08 | Bridgestone Corporation | COPOLYMER, RUBBER COMPOSITION, RESIN COMPOSITION, TIRE AND RESIN PRODUCT |
US11214639B2 (en) | 2017-12-05 | 2022-01-04 | Bridgestone Corporation | Copolymer, rubber composition, resin composition, tire and resin product |
Also Published As
Publication number | Publication date |
---|---|
JP3571028B2 (ja) | 2004-09-29 |
US20020045710A1 (en) | 2002-04-18 |
EP1243615A4 (en) | 2005-01-19 |
DE60037273D1 (de) | 2008-01-10 |
EP1243615B1 (en) | 2007-11-28 |
DE60037273T2 (de) | 2008-10-09 |
US7488776B2 (en) | 2009-02-10 |
EP1243615A1 (en) | 2002-09-25 |
US20030181594A1 (en) | 2003-09-25 |
US6555624B2 (en) | 2003-04-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3571028B2 (ja) | 熱可塑性架橋ゴム組成物 | |
US6800693B2 (en) | Olefin polymer composition | |
US6506839B1 (en) | Elastomer composition | |
JP2006328307A (ja) | 射出成形体 | |
JP4700186B2 (ja) | 複合エラストマー組成物 | |
JP2007191544A (ja) | 発泡性重合体組成物 | |
JP2007254514A (ja) | 軟質重合体組成物 | |
JP2004067798A (ja) | 芳香族ビニル系水素添加ゴム組成物 | |
JP5031174B2 (ja) | ゴム系重合体組成物 | |
JP2004067944A (ja) | 極性熱可塑性エラストマー組成物 | |
JP4948696B2 (ja) | 熱可塑性ゴム組成物 | |
JP2004149709A (ja) | 良外観熱可塑性エラストマー組成物の製法 | |
JP4213995B2 (ja) | 良外観熱可塑性重合体組成物 | |
JP2007153971A (ja) | プロピレン系重合体組成物 | |
JP4489937B2 (ja) | ゴム組成物 | |
JP2006056962A (ja) | 熱可塑性エラストマー組成物 | |
JP2006328306A (ja) | オレフィン系重合体組成物 | |
JP2003034739A (ja) | オレフィン系架橋ゴム組成物 | |
JP2003034738A (ja) | 水素添加ゴム状重合体組成物 | |
JP2006143783A (ja) | 熱可塑性架橋ゴム組成物 | |
JP2006089563A (ja) | 熱可塑性架橋ゴム組成物粉体 | |
JP2006008742A (ja) | 樹脂組成物 | |
JP2002348413A (ja) | 高強度熱可塑性ゴム組成物 | |
JP2002167472A (ja) | 水素添加ゴム組成物 | |
JP2006249312A (ja) | 機能付与方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 09929489 Country of ref document: US |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
ENP | Entry into the national phase |
Ref country code: JP Ref document number: 2001 548610 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2000987746 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2000987746 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 2000987746 Country of ref document: EP |