WO2005105913A1 - ゴム組成物およびその用途 - Google Patents
ゴム組成物およびその用途 Download PDFInfo
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- WO2005105913A1 WO2005105913A1 PCT/JP2005/008244 JP2005008244W WO2005105913A1 WO 2005105913 A1 WO2005105913 A1 WO 2005105913A1 JP 2005008244 W JP2005008244 W JP 2005008244W WO 2005105913 A1 WO2005105913 A1 WO 2005105913A1
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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
- C08L21/00—Compositions of unspecified rubbers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
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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
- C08L23/025—Copolymer of an unspecified olefin with a monomer other than an olefin
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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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
Definitions
- the present invention relates to a novel and useful rubber composition containing a non-conjugated polyene-based copolymer and a gen-based rubber, and uses thereof.
- Patent Document 1 discloses a rubber composition capable of forming a tire having excellent braking performance and fuel efficiency. Is not sufficient in fatigue resistance and mechanical strength.
- Patent Document 2 Japanese Patent Application Laid-Open No. 11-27809
- Patent Document 2 describes a tire component having excellent tear strength by adding a functionalized polyolefin modified with maleic anhydride or the like.
- a specific composition such as the present invention as a composition used for a tire component.
- Patent document 1 Japanese Patent Application Laid-Open No. 2001-114837
- Patent Document 2 Japanese Unexamined Patent Application Publication No. 11-278800
- the present invention is intended to solve the problems associated with the prior art as described above. It is an object of the present invention to provide a rubber composition capable of forming a tire excellent in dynamic performance and fuel efficiency, and also excellent in mechanical strength and fatigue resistance, and its use.
- the inventors of the present invention have conducted intensive studies to solve the above-described problems, and as a result, a rubber composition containing a non-conjugated polyene-based copolymer, a gen-based rubber, and a specific component has been found to improve braking performance and fuel consumption performance. It has been found that an excellent tire can be formed, and that the present invention has excellent mechanical strength and fatigue resistance, and has completed the present invention. Such findings were first discovered by the present inventors.
- a rubber composition (hereinafter, also simply referred to as "rubber composition") containing the non-conjugated polyene-based copolymer (A), the gen-based rubber (B), and the specific component (C) according to the present invention. )
- A a- structural unit 96-70 mole 0/0 derived from Orefuin (A1), a random copolymer containing structural units from 4 to 30 mole% derived from non-conjugated Poryen (A2), Glass transition temperature (Tg) is -25 to 20 ° C
- (C) The following (C1) to (C9) powers: at least one selected from the group consisting of an acrylonitrile-conjugated gen copolymer (C4) )), Component) shall not be an acrylonitrile-conjugated diene copolymer. ];
- (C1) a copolymer of a one-year-old olefin having 2 or more carbon atoms and a vinyl compound having a polar group
- component (Cl) 1 to 15 parts by weight
- component (C2) 1 to 15 parts by weight
- (C3) One or more (X-olefins are polymerized or copolymerized, and the total number of carbon atoms of the a-olefins is 6 or more. Is 2 or more and the carbon number is 5 or less ⁇
- the structural unit derived from at least one ⁇ -olefin is in the range of 5 to 95 mol%.
- component (C3) 1 to 15 parts by weight
- component (C4) 1 to 15 parts by weight
- 1 + 4 is 250, an ethylene content of 70 to 95 mole 0/0 Ethylene 'at Orefuin copolymer 5_2) 95 to 40 wt% and
- Olefin thermoplastic elastomer obtained by dynamically heat-treating in the absence of a crosslinking agent
- component (C5) 1 to 15 parts by weight
- a- Orefuin and the total 100 mole 0/0 of the non-conjugated Poryen a nonconjugated Poryen is 0.1 to 30 mol%
- Glass transition temperature (Tg) is less than 25 ° C
- component (C6) 1 to 15 parts by weight
- n is an integer of 0 to 10
- R 1 is a hydrogen atom or an alkyl group having 1 to 10 carbon atoms
- R 2 is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms.
- R 3 is a hydrogen atom or an alkyl group having 1 to 10 carbon atoms.
- a- Orefuin and the total 100 mole 0/0 of the non-conjugated Poryen a nonconjugated Poryen is 0.1 to 30 mol%
- Glass transition temperature (Tg) is less than 25 ° C
- component (C7) 1 to 15 parts by weight
- f is an integer from 0 to 5 (if both p and q are 1, f is not 0),
- g is an integer from 1 to 6
- R 5 , R 6 and R 7 each independently represent a hydrogen atom or an alkyl group having 3 to 3 carbon atoms
- R 8 is an alkyl group having 1 to 3 carbon atoms
- n is an integer of 1 to 5
- R 1Q and R 11 are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms
- R 12 is an alkyl group having 1 to 3 carbon atoms.
- R 9 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.
- C8 The above (Cl), (C2), (C3) Modified polymer obtained by graft-modifying a polymer of any of (C6) and (C7) with a polar group-containing unsaturated compound
- component (C8) 1 to 15 parts by weight
- component (C9) 1 to 15 parts by weight.
- the rubber composition comprises 1 to 30 parts by weight of a petroleum resin (D) based on 100 parts by weight of the total of the non-conjugated polyene-based copolymer (A) and the gen-based rubber (B).
- the structural unit derived from the ⁇ -branched olefin (A1) contains a structural unit (a) derived from ethylene, and has a structural unit (a) derived from ethylene and a carbon number of 3 or more.
- the molar ratio [(a) / (b)] to the structural unit (b) derived from ⁇ -olefin is preferably 100Z0 to lZ99.
- the non-conjugated polyene copolymer ( ⁇ ) has a viscosity of 1 to 1 [ML (100 ° C), JIS K630
- 0] is preferably from 5 to 200.
- the intrinsic viscosity [7?] Of the non-conjugated polyene-based copolymer (A) measured in decalin at 135 ° C. is preferably 0.01 to: LOdl / g.
- non-conjugated polyene (A2) is a non-conjugated cyclic polyene (A2a).
- the non-conjugated cyclic polyene (A2a) is preferably a non-conjugated cyclic polyene represented by the following formula (11). [0017] [Dani 4]
- n is an integer from 0 to 2
- Ri to R 4 each independently represent a group selected from a hydrogen atom, a halogen atom and a hydrocarbon group, and represent an atom or a group, and the hydrocarbon group may have a double bond.
- Ri to R 4 may be bonded to each other to form a monocyclic or polycyclic ring, and the monocyclic or polycyclic ring may have a double bond
- R 1 and R 2 or R 3 and R 4 may form an alkylidene group
- R 1 and R 3 or R 2 and R 4 may be bonded to each other to form a double bond.
- an alkylidene group is formed at R 1 and R 2 or at R 3 and R 4 ;
- R 1 and R 3 or R 2 and R 4 are bonded to each other to form a double bond.
- Ri ⁇ R 4 is a hydrocarbon group of unsaturated having a double bond 1 or more.
- a rubber material for a tire according to the present invention is characterized by containing the rubber composition described above.
- a tire tread according to the present invention is characterized by being formed using the above rubber material for a tire.
- a tire according to the present invention includes the above-described tire tread.
- the invention's effect [0021]
- the rubber composition according to the present invention can form a tire having excellent braking performance and fuel efficiency, and is also excellent in mechanical strength and fatigue resistance.
- the rubber composition according to the present invention is excellent in mechanical strength and fatigue resistance, and thus can be suitably used particularly for applications such as tires.
- the tire to which the rubber composition according to the present invention is applied has excellent braking performance, fuel consumption performance, mechanical strength, and fatigue resistance.
- the rubber composition according to the present invention is characterized by mixing a non-conjugated polyene-based copolymer (A), a gen-based rubber (B), and a specific compound (C).
- Such a rubber composition of the present invention does not contain the specific compound (C). Compared with the rubber composition, it has excellent mechanical strength and fatigue resistance. Therefore, when the rubber composition of the present invention is applied to, for example, a tire, the tire achieves both excellent braking performance and excellent fuel efficiency, and also has excellent rubber elasticity, weather resistance, and ozone resistance. It also has excellent mechanical properties and fatigue resistance. Further, the tire has excellent wear resistance.
- the non-conjugated polyene copolymer (A) used in the present invention is a random copolymer containing a structural unit derived from oc-olefin (A1) and a structural unit derived from non-conjugated polyene (A2). is there.
- a content of the structural unit derived from Orefuin (A1) is 96 to 70 mole 0/0, preferably 9 5-75 Monore 0/0, still more preferably from 94 to 80 Monore 0/0,
- the content of structural units derived from nonconjugated Poryen (A2) is 4 to 30 mol%, preferably 5 to 25 mol 0/0, more preferably 6 to 20 mol 0/0.
- the content of a-olefin (Al) and non-conjugated polyene (A2) is within this range, the co-vulcanizability of the non-conjugated polyene-based copolymer (A) and the gen-based rubber (C) is improved. From is preferred.
- the glass transition temperature (Tg) of the non-conjugated polyene copolymer (A) is ⁇ 25 to 20 ° C., preferably ⁇ 20 to 15 ° C., and more preferably ⁇ 15 to 10 ° C. is there. It is preferable that the glass transition temperature (Tg) be in this range, since the braking performance of the rubber composition is improved.
- the glass transition temperature (Tg) can also determine the temperature-dependent measuring power of tan ⁇ by a viscoelasticity test.
- a polymer sheet having a thickness of 2 mm was measured using a viscoelasticity tester (viscoelasticity tester manufactured by Rheometrics; model RDS-2) at a measurement temperature of ⁇ 70 to 30 ° C., a frequency of 10 Hz, and a strain of 10%.
- the temperature dependence of the loss tangent tan ⁇ (index of vibration damping) is measured under the conditions of a rate of 0.5% and a heating rate of 4 ° CZ, and the temperature at which tan ⁇ is maximum is the glass transition temperature (Tg).
- non-conjugated polyene-based copolymer (A) has a viscosity of ML (100 ° C), JIS K6
- [300] is not particularly limited, but is preferably 5 to 200, and more preferably 5 to 150.
- the intrinsic viscosity [7?] Of the non-conjugated polyene copolymer ( ⁇ ) measured in decalin at 135 ° C. is preferably 0.01 to LOdlZg, more preferably 0.01 to 7 dlZg, and particularly preferably 0.01 to 7 dlZg. 0.01 to 5 dlZg.
- the non-conjugated polyene copolymer (A) is excellent in mechanical strength and workability, and has a value in the above preferable range, more preferably in the above preferable range. Indeed, these performances are better.
- it is preferable that one of the viscosity and intrinsic viscosity [ ⁇ ] is within the above range. In one embodiment of the present invention, both the viscosity and intrinsic viscosity [ ⁇ ] are within the above ranges.
- the crystallinity is preferably lower.
- the oc-olefin (A1) constituting the non-conjugated polyene copolymer (A) used in the present invention includes ethylene, propylene, 1-butene, 1-hexene, 1-otaten, and 1-decene. And a-olefins having 2 to 20 carbon atoms, preferably 2 to 15 carbon atoms, such as, 1-dodecene and 4-methyl 1-pentene. More preferably, (X-olefins having 4 to 8 carbon atoms, particularly butene, hexene, and otaten are used because of excellent fatigue resistance of the rubber composition. A-olefin (A1) is used alone. Can be used, or two or more can be used in combination.
- the non-conjugated polyene-based copolymer (A) used in the present invention preferably contains a structural unit (a) derived from ethylene as a structural unit derived from oc-olefin (A1), and
- the molar ratio [(a) Z (b)] of the structural unit (a) derived from a to the structural unit (b) derived from a-olefin having 3 or more carbon atoms is 100 ZO to: LZ99, preferably 100 ZO to 50 Z50. It is more preferably from 95 ⁇ 5 to 50 ⁇ 50.
- the non-conjugated polyene ( ⁇ 2) constituting the non-conjugated polyene-based copolymer ( ⁇ ) used in the present invention may be cyclic or chain-like.
- Examples of such a non-conjugated polyene ( ⁇ 2) include the following (A2a) non-conjugated cyclic polyene, (A2b) non-conjugated linear polyene, and the like.
- non-conjugated cyclic polyene (A2a) constituting the non-conjugated polyene-based copolymer (A2) used in the present invention can be used alone or in combination of two or more.
- non-conjugated cyclic polyene (A2a) a cyclic conjugate having two or more non-conjugated unsaturated bonds can be used without limitation, and a non-conjugated cyclic polyene represented by the following formula (11) may be used. I like it. [0031] [Formula 5]
- n is an integer from 0 to 2
- Ri to R 4 each independently represent an atom or a group selected from the group consisting of a hydrogen atom, a halogen atom and a hydrocarbon group, and examples of the halogen atom include a fluorine atom, a chlorine atom, a bromine atom and an iodine atom.
- Hydrocarbon groups may have double bonds
- Ri to R 4 may be bonded to each other to form a monocyclic or polycyclic ring, and the monocyclic or polycyclic ring may have a double bond
- R 1 and R 2 or R 3 and R 4 may form an alkylidene group
- R 1 and R 3 or R 2 and R 4 may be bonded to each other to form a double bond! /.
- an alkylidene group is formed at R 1 and R 2 or at R 3 and R 4 ;
- R 1 and R 3 or R 2 and R 4 are bonded to each other to form a double bond.
- Ri ⁇ R 4 is a hydrocarbon group of unsaturated having a double bond 1 or more.
- examples of the hydrocarbon group represented by Ri to R 4 include an alkyl group having 1 to 20 carbon atoms, a halogenated alkyl group having 1 to 20 carbon atoms, and a cycloalkyl having 3 to 15 carbon atoms. And an aromatic hydrocarbon group having 6 to 20 carbon atoms and an unsaturated hydrocarbon group having at least one double bond.
- examples of the alkyl group include a methyl group, an ethyl group, a propyl group, and an isopropyl group. And a benzyl group, an amyl group, a hexyl group, an octyl group, a decyl group, a dodecyl group and an octadecyl group.
- examples of the halogenated alkyl group include groups in which at least a part of the hydrogen atoms forming the above-mentioned alkyl group has been substituted with a fluorine atom, a chlorine atom, a bromine atom or an iodine atom.
- Examples of the cycloalkyl group include a cyclohexyl group.
- Examples of the aromatic hydrocarbon group include a phenyl group and a naphthyl group.
- Examples of the unsaturated hydrocarbon group include a vinyl group and an aryl group.
- R 1 and R 2 , R 3 and R 4 , R 1 and R 3 , R 2 and R 4 , R 1 and R 4 Or R 2 and R 3 may be bonded to each other (in cooperation with each other) to form a monocyclic or polycyclic ring, and the monocyclic or polycyclic ring thus formed is It may have a double bond.
- R 1 and R 2 or R 3 and R 4 may form an alkylidene group.
- alkylidene group-containing non-conjugated cyclic polyolefin having an alkylidene group in which R 1 and R 2 or R 3 and R 4 form an alkylidene group (A2a-1);
- Ri ⁇ R 4 of at least one double bond Ru monovalent unsaturated hydrocarbon radical der having at least one unsaturated hydrocarbon group-containing non-conjugated cyclic Poryen (A2a- 3),
- alkylidene group-containing non-conjugated cyclic polyene (A2a-1)
- s is an integer of 0 to 2
- R 17 is an alkylidene group
- R 18 and R 19 are each independently a group consisting of a hydrogen atom, a halogen atom and a hydrocarbon group.
- R represents an atom or group selected, and R 18 and R 19 may form an alkylidene group.
- a non-conjugated cyclic polyene containing an alkylidene group is an integer of 0 to 2
- R 17 is an alkylidene group
- R 18 and R 19 are each independently a group consisting of a hydrogen atom, a halogen atom and a hydrocarbon group.
- R represents an atom or group selected
- R 18 and R 19 may form an alkylidene group.
- a non-conjugated cyclic polyene containing an alkylidene group is a non-conjugated cyclic polyene containing an alkylidene group.
- alkylidene group represented by R 17 in the formula (12) include an alkylidene group having 1 to 20 carbon atoms such as a methylene group, an ethylidene group, a propylidene group, and an isopropylidene group.
- s is preferably 0.
- the halogen atom represented by R 18 and R 19 include the same ones as in the above formula (11).
- the hydrocarbon group include an alkyl group having 1 to 20 carbon atoms, a halogenated alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 15 carbon atoms, and an aromatic hydrocarbon group having 6 to 20 carbon atoms. No.
- alkylidene group-containing non-conjugated cyclic polyene (A2a-1) represented by the above formula (1-2) include 5-methylene-12 norbornene, 5-ethylidene-12 norbornene (ENB), 5-isopropylidene-2-norbornene And the following compounds. Of these, 5 ethylidene and 2 norbornene are preferred! [0041]
- the polycyclic non-conjugated cyclic polyene (A2a-2) includes dicyclopentadiene (DCPD
- Non-conjugated cyclic polyene (A2a-1) that is, an alkylidene group-containing non-conjugated cyclic polyene (A2a-1) in which s is 0 in the above formula (1-2), or m is 0 in the above formula (1-1)
- Polycyclic non-conjugated cyclic polyenes (A2a-2) are particularly preferred.
- alkylidene group-containing non-conjugated cyclic polyene (A2a-1) having the formula (12) wherein s is 0, specifically, 5 ethylidene 2 norbornene (ENB) Is most preferred.
- the non-conjugated polyene-based copolymer (A2) used in the present invention may also include a non-conjugated linear polyene (A2b).
- Non-conjugated chain polyene (A2b) is a compound having two or more non-conjugated unsaturated bonds in one molecule.
- As the non-conjugated chain polyene (A2b), a non-covalent gene, a non-conjugated triene or a non-conjugated tetraene may be used.
- Non-conjugated chain polyenes (A2b) can be used alone or in combination of two or more.
- non-conjugated chain polyene A2b
- A2b-1 a non-conjugated triene or tetraene
- A2b-2 a non-conjugated triene represented by the following formula (2-2)
- f is an integer from 0 to 5 (if both p and q are 1, f is not 0),
- g is an integer from 1 to 6
- R 5 , R 6 and R 7 are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms,
- R 8 is an alkyl group having 1 to 3 carbon atoms
- n is an integer of 1 to 5
- R 1Q and R 11 are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms
- R 12 is an alkyl group having 1 to 3 carbon atoms. (However, when both p and q are 1, R 9 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.) 0 ] [0052]
- Ri to R 5 are each independently a hydrogen atom, a methyl group or an ethyl group. However, R 4 and R 5 cannot be hydrogen atoms at the same time. ]
- the non-conjugated triene (A2b-2) represented by the formula (2-2) is represented by the formula (2-1).
- g is 2, p-force, q is 1, and R 5 and R 6 are hydrogen atoms.
- R 3 and R 5 are both methyl groups is preferable.
- the non-conjugated polyene-based copolymer of the present invention obtained by using such a non-conjugated triene (A2b-2) as a monomer material, the braking performance and fuel efficiency of a tire formed from the rubber composition described below can be obtained. Both are compatible in a particularly excellent state.
- non-conjugated chain polyene (A2b) examples include 1,4-hexadiene, 1,3-butadiene, isoprene, 7-methyl-1,6-octactene, 6-methyl-1,6-octactene, and 6, 7-dimethyl-1,6-octadiene, 7-methyl-1,6-decadiene, 6-methyl-1,6-nonadiene, 6,7-dimethyl-1,6-nonadiene, 7-methyl-1,6-nonadiene, 6-methyl — 1, 6-decadiene.
- Examples of the non-conjugated triene or tetraene (A2b-1) represented by the formula (2-1) include the following compounds (excluding the compound included in the formula (2-2)).
- the first exemplified 4-ethylidene-18-methyl-1,7-nonagen is capable of braking the tire formed by the rubber composition described below. It is preferable in terms of excellent performance and fuel efficiency.
- Examples of the non-conjugated triene (A2b-2) represented by the formula (2-2) include the following compounds.
- non-conjugated trienes A2b-2
- the non-conjugated polyene represented by the formulas (2-1) and (2-2) is generally a non-conjugated polyene used as a monomer in the present invention as a monomer having a geometric isomer structure (trans-form, cis-form).
- A2b) may be a mixture of a trans form and a cis form, or may be a trans form alone or a cis form alone.
- the non-conjugated triene (A2b-2) represented by (2-2) can be produced by a known method, for example, a method described in JP-A-2001-114837 (paragraphs [0036] to [0042]). .
- the non-conjugated polyene copolymer (A) used in the present invention can be produced by copolymerizing oc-olefin (A1) and non-conjugated polyene (A2) in the presence of a catalyst. .
- Examples of the catalyst include a transition metal compound such as vanadium (V), zirconium (Zr), and titanium (Ti), an organic aluminum compound or an organic aluminum oxide conjugate, and Z or ionized ionic compound.
- a transition metal compound such as vanadium (V), zirconium (Zr), and titanium (Ti)
- Ti titanium
- Zr zirconium
- Ti titanium
- Zr zirconium
- Ti titanium
- Z or ionized ionic compound Z or ionized ionic compound.
- a well-known catalyst composed of a stilt product for example, a catalyst described in JP-A-2001-114837 (paragraphs [0043] to [0072]) can be used.
- ex-olefin (A1) and non-conjugated polyene (A2) are usually added in the presence of the above-mentioned vanadium-based catalyst or meta-aqueous catalyst. Copolymerize in the liquid phase.
- a hydrocarbon solvent is generally used, but a monomer may be used as the solvent.
- the copolymerization can be performed under known reaction conditions, for example, as described in Japanese Patent Application Laid-Open No. 2001-114487 filed by the present applicant (paragraphs [0074] to [0081]).
- the a-olefin (A1) and the non-conjugated polyene (A2) are supplied to the polymerization system in such an amount as to obtain the non-conjugated polyene-based copolymer having the specific composition.
- a molecular weight regulator such as hydrogen can be used.
- the non-conjugated polyene-based copolymer (A) used in the present invention is usually obtained as a polymerization solution containing the same.
- This polymerization solution is treated by a conventional method to obtain a non-conjugated polyene copolymer.
- the diene rubber (B) used in the present invention a known diene rubber having a double bond in the main chain can be used without limitation, and a polymer or a polymer having a conjugated disulfide as a main monomer can be used. Is preferably a copolymer rubber.
- Gen-based rubber (B) includes natural rubber (NR) and hydrogenated rubber. As the gen-based rubber (B), those having an iodine value of 100 or more, preferably 200 or more, and more preferably 250 or more are desirable.
- Such a gen-based rubber (B) includes natural rubber (NR), isoprene rubber (IR), and styrene.
- SBR styrene-butadiene rubber
- NR natural rubber
- IR isoprene rubber
- SBR styrene-butadiene rubber
- BR butadiene rubber
- Genotype rubber (B) can be used alone or in combination of two or more.
- NR natural rubber
- Isoprene rubber has a specific gravity of 0.91 to 0.94 and a viscosity of 30 to 120 (ML (100 ° C), JIS K6300)
- SBR styrene'butadiene rubber
- BR has a specific gravity of 0.90 to 0.95, mu-viscosity [ML (100 ° C), JIS K63
- the gen-based rubber (B) is obtained by mixing the non-conjugated polyene-based copolymer (A) with the gen-based rubber (B).
- F 60/40 to 0.1 / The amount can be 99.9, preferably 50/50 to 1/99, more preferably 40/60 to 5/95.
- a tire having excellent braking performance and excellent fuel efficiency can be formed at the same time, and a rubber composition excellent in control of weather resistance, damping rate, etc. You can get things.
- Component (C) used in the present invention includes at least one component selected from component (C1) to component (C9), which will be described in detail below (provided that component (C) is acrylonitrile-conjugated gel). In the case where a copolymer (C4) is contained, the component) shall not be an acrylonitrile-conjugated diene copolymer. ].
- the content of each of the components (C1) to (C9) in the rubber composition of the present invention depends on the components used. , The amount is 1 to 15 parts by weight, respectively, based on 100 parts by weight of the total of the non-conjugated polyene copolymer (A) and the gen-based rubber (B).
- the lower limit is preferably 2 parts by weight, and the upper limit is preferably 13 parts by weight, more preferably 10 parts by weight, respectively.
- the copolymer belonging to the component (C1) may be used alone or in combination of two or more.
- the content is 1 to 15 parts by weight. This is the same when the components (C2), (C3), (C4), (C5), (C6), (C7), (C8), and (C9) are used.
- each of the components (C1) to (C9) may be used alone or in combination of two or more.
- the total content of each of the components (C1) to (C9) in the rubber composition of the present invention is not particularly limited, but the non-conjugated polyene copolymer ( It is usually 1 to 50 parts by weight, more preferably 1 to 40 parts by weight, and still more preferably 1 to 30 parts by weight, based on 100 parts by weight of the total of A) and the gen-based rubber (B).
- component (C1) and component (C2) when component (C1) and component (C2) are used in combination, 1 to 15 parts by weight of component (C1) and 1 to 15 parts by weight of component (C2) can be used. Further, for example, when the component (C1), the component (C2), the component (C3) and the component (C4) are used in combination, the component (C1) is 1 to 15 parts by weight, the component (C2) is 1 to 15 parts by weight, The component (C3) can be used in an amount of 1 to 15 parts by weight, and the component (C4) can be used in an amount of 1 to 15 parts by weight.
- the total amount is not particularly limited, but is preferably in the above range of 1 to 50 parts by weight.
- the component (C1) used in the present invention is a copolymer of an oc-olefin having 2 or more carbon atoms and a vinyl conjugate containing a polar group.
- the a-olefin having 2 or more carbon atoms is preferably an a-olefin having 2 to 20 carbon atoms.
- ⁇ -olefins include ethylene, propylene, 1-butene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-otaten, 1-nonene, 1-decene, and 1-decene. ⁇ Ndecene, 1-dodecene and the like. [0073] Among these, ethylene and propylene are preferred, and ethylene is particularly preferred! Bull compound with certain conditions)
- the vinyl aldehyde compound having a polar group is, specifically, a vinyl conjugate containing a hetero atom.
- the hetero atom include an oxygen atom, a nitrogen atom, a zeo atom, and a halogen atom.
- anhydride group COOH group (carboxylic acid group), metal salt of carboxylic acid, OH group, epoxy group, nitrile group, amide group and the like.
- an ester group, a carboxylic acid group, an OH group, an epoxy group, and an acid anhydride group are preferred.
- An ester group having a carbon number of 1 to L0, an carboxylic acid group, and a metal of carboxylic acid Salts are particularly preferred.
- a metal forming this metal salt an alkali metal such as zinc, magnesium, and sodium and an alkaline earth metal are preferable.
- Examples of the vinyl conjugate having a polar group include (meth) acrylic acid; alkyl (meth) acrylates such as methyl (meth) acrylate, ethyl (meth) acrylate, and butyl (meth) acrylate. Butyl acetate, carboxylate, butyl alcohol, maleic anhydride, glycidyl (meth) acrylate, and the like are preferably used.
- the component (C1) is a copolymer of the above-mentioned a-olefin having 2 or more carbon atoms and a vinyl compound having a polar group.
- ethylene Z-butyl acetate copolymer EVA
- ethylene Z methyl phthalate copolymer ethylene Z ethyl acrylate copolymer
- ethylene Z butyl acrylate copolymer ethylene Z methacryl
- examples include an acid copolymer, an ionomer resin obtained by crosslinking the molecules of an ethylene Z methacrylic acid copolymer with metal ions, and an ethylene Z acrylic acid copolymer.
- an ethylene Z methacrylic acid copolymer, an ionomer resin in which the molecules of the ethylene Z methacrylic acid copolymer are crosslinked with metal ions, and an ethylene Z methacrylic acid copolymer are preferred.
- Acid copolymers are particularly preferred.
- Such a component (C1) is obtained by subjecting each of the above monomers to a conventionally known radical polymerization and Ziegler polymerization. It can be obtained by combining.
- the component (C1) may be a ready-made product.
- the content of the structural unit derived from the vinyl group-containing compound having a polar group is usually 5 to 50% by weight, preferably 100% by weight of the total of ⁇ -olefin and the vinyl compound having a polar group. It is preferably from 7 to 40% by weight, more preferably from 10 to 30% by weight.
- the melt flow rate (MFR; ASTM D 1238, 190 ° C, 2.16 kg load) of the component (C1) is not particularly limited, but is usually 0.001 to 1000 gZlO, preferably l to 500 gZlO, more preferably 1 to 400 gZ for 10 minutes.
- the content of the component (C1) is the total of the non-conjugated polyene copolymer (A) and the gen-based rubber (B),
- Component (C2) used in the present invention is a copolymer having an aromatic vinyl polymer block and a conjugated diene polymer block (hereinafter, also referred to as “block copolymer (c2)”), or block copolymer. It is a hydrogenated product of coalescence (c2).
- the block copolymer (c2) is preferably a styrene gen block copolymer (Housen bull polymer block)
- Aromatic vinyl compounds include styrene, OC-methylstyrene, butyltoluene, p-tert-butylstyrene, divinylbenzene, p-methylstyrene, 4-n-propylstyrene, 2,4-dimethylstyrene, 3,5-dimethylstyrene, Examples thereof include 1,1-diphenyl styrene, 2,4,6 trimethylstyrene, 4-cyclohexylstyrene, 3-methyl-5n-hexylstyrene, and among them, styrene is preferred.
- the aromatic vinyl polymer block can be derived by polymerizing one or more of these aromatic vinyl conjugates. (Conjugated diene compound block)
- the conjugated diene compounds include butadiene, isoprene, 1,3-pentadiene, 2,3-dimethyl-1,3-butadiene, piperylene, 3-butyl-1,3-octadiene, 1-phenylene-1,3-butadiene, 1,3-octadiene, Compounds having a conjugated double bond such as 1,3-hexadiene are exemplified.
- the conjugated polymer block can be derived by polymerizing one or more of these conjugated conjugates. Preferably, butadiene, isoprene, and mixtures thereof are polymerized.
- the block copolymer (c2) consists essentially of a polymer block A derived from one or more aromatic vinyl compounds and a polymer block B derived from one or more compounds having conjugated double bonds. Contained in
- the weight ratio of the structural unit derived from the aromatic vinyl compound to the structural unit derived from the conjugated conjugate is 5Z95 ⁇ 70Z30, preferably
- the molecular structure of the block copolymer (c2) may be of any of the linear, branched and radial types, or a combination of these types! /! /.
- the styrene gen block copolymer can be represented by a general arrangement such as (A-B) A or (B-A). However, A and B are as described above, and each A and each B may have different monomers or different molecular weights. X is the number of (A-B) structures in the polymer. is there.
- (A-B) A type copolymer is preferably used.
- X is preferably 1.
- the unsaturated bonds remaining in the block copolymer (c2) may be partially or completely hydrogenated.
- block copolymer (c2) and its water additive used in the present invention commercially available products can be widely used. Further, it can be easily produced by living polymerization.
- component (C2) As the component (C2),
- SEBS a triblock copolymer or a diblock copolymer in which polystyrene and hydrogenated polybutadiene are bonded, for example, trade name: Septon (Kuraray)
- SEPS a triblock copolymer or a diblock copolymer to which polystyrene monohydrogenated polyisoprene is bonded, for example, trade name: Septon (Kuraray)
- SEEPS a triblock copolymer or a diblock copolymer to which polystyrene monohydrogenated polyisoprene is bonded, for example, trade name: Septon (Kuraray)
- SIS Triblock copolymer in which polystyrene and bullet-polyisoprene are combined, such as Hibler (Kuraray)
- SIS is particularly preferred.
- the content of structural units derived from styrene in SIS is preferably from 5 to 70% by weight.
- the SIS melt flow rate (MFR; ASTM D 1238, 230 ° C, 2.16 kg load) is not particularly limited, but is preferably 500 gZlO or less.
- the content of the component (C2) is 1 to 15 parts by weight, preferably 2 to 13 parts by weight, based on a total of 100 parts by weight of the non-conjugated polyene-based copolymer (A) and the gen-based rubber (B). More preferably, it is 2 to 10 parts by weight.
- the component (C3) used in the present invention is obtained by polymerizing or copolymerizing one or more a-olefins, and the total number of carbon atoms of the a-olefin is 6 or more (X-olefin polymer or copolymer).
- Polymers (However, in the case of a copolymer containing two or more types of ⁇ -olefins and containing an ⁇ -olefin having 5 or less carbon atoms, the structural unit derived from at least one type of ⁇ -olefin is In the range of 5 to 95 mol%).
- a monomer other than a-olefin such as non-conjugated polyene is not included in the component (C3).
- the a-olefin in the component (C3) is an a-olefin having 2 or more carbon atoms, preferably an ⁇ -olefin having 2 to 20 carbon atoms.
- Such ⁇ -olefins include ethylene, propylene, 1-butene, 4-methyl-1- ⁇ And 1-hexene, 1-heptene, 1-otathene, 1-nonene, 1-decene, 1-undecene, and 1-dodecene.
- the total carbon number of ⁇ -olefin is the carbon number of ⁇ -olefin when one ⁇ -olefin is used, and is used when two or more ⁇ -olefins are used. It is the sum of all carbon numbers of ⁇ -olefins obtained. For example, in the case of a propylene butene copolymer, the total number of carbon atoms in a-olefin is 7, since propylene has 3 carbon atoms and the carbon number power of butene.
- the total number of carbon atoms in the a-olefin is 6 or more, preferably 7 or more.
- the upper limit of the total carbon number of a-olefin is not particularly limited, but is usually 40 or less, preferably 30 or less.
- component (C3) as a polymer obtained by polymerizing one kind of ⁇ -olefin, poly (4-methyl-1-pentene), poly (1-hexene), poly (1-otaten), poly (1-decene) And the like.
- Butene 'propylene copolymer (propylene content 50 mol 0/0 or less),
- Propylene copolymer (propylene content 50 mol 0/0 or less), an ethylene-1-Otaten copolymer (1 Otaten content of 50 mol% or less) is preferably tool 1 over Bed Ten 'propylene copolymer (propylene content 50 mol 0/0 or less) is particularly preferred.
- the melt flow rate (MFR; ASTM D 1238, 190 ° C, 2.16 kg load), which is a measure of the molecular weight of the component (C3), is usually from 0.01 to 200 gZlO, preferably from 0.01 to LOOgZlO. It is.
- Density of 1-butene 'propylene copolymer (propylene content 50 mol 0/0 or less) is generally 8
- melt flow rate 80 to 930 kgZm 3 , preferably 880 to 930 kgZm 3 , and the melt flow rate (MFR;
- ASTM D 1238, 190 ° C, 2.16 kg load) is usually 0.01 to 200 gZlO min, preferably 0.0
- melt flow rate (MFR; ASTM D 1238, 190 ° C, 2.16 kg load) of ethylene / 1-otaten copolymer is usually 0.01 to 200 gZlO min.
- These polymers or copolymers can be produced by a known method using a meta-mouth catalyst, a solid titanium catalyst, and a vanadium catalyst.
- the content of the component (C3) is 1 to 15 parts by weight, preferably 2 to 15 parts by weight, based on 100 parts by weight in total of the non-conjugated polyene-based copolymer (A) and the gen-based rubber (B). To 13 parts by weight, more preferably 2 to 10 parts by weight.
- the component (C4) used in the present invention i.e., -tolyl-butadiene rubber (NBR) is known, and is described in, for example, "14303 Idani Gakugaku, pl209-1210 (Ii Gakugaku Kogyo, Jan. 2003) 28)).
- NBR -tolyl-butadiene rubber
- Examples of the component (C4) include "Nipol (Zeon Corporation)" as a commercial product.
- the acrylonitrile content in component (C4) is from 10 to 50% by weight, preferably from 10 to 40% by weight.
- the viscosity of the component (C4) is usually 20 [ML (100 ° C), JIS K6300].
- the content of the component (C4) is 1 to 15 parts by weight, preferably 2 to 15 parts by weight, based on 100 parts by weight of the total of the non-conjugated polyene-based copolymer ( ⁇ ) and the gen-based rubber ( ⁇ ). ⁇ 13 parts by weight, more preferred Is from 2 to 10 parts by weight.
- the gen-based rubber (B) is not an Atari-port-tril-conjugated-gen copolymer.
- Component (C5) used in the present invention is
- thermoplastic thermoplastic elastomer obtained by dynamically heat-treating in the absence of a crosslinking agent.
- polyethylene resin (C5-1) known polyethylene resins such as high-density polyethylene, medium-density polyethylene, linear low-density polyethylene and low-density polyethylene can be used without limitation.
- 2.16 kg load is from 0.01 to: LOOgZ10, preferably 0.01 to 50 gZ10.
- melt flow rate (MFR; ASTM D 1238, 190 ° C, 2.16 kg load) is 0.1 to 30 gZlO, preferably 0. a 2 ⁇ 20gZlO min, a density of 0. 88 ⁇ 0. 95gZcm 3, is preferably 0. 91 ⁇ 0. 94gZcm 3.
- Polyethylene ⁇ (C5-1) is, I may be a homopolymer of ethylene, and of ethylene, a copolymer of a small amount, for example 10 mole 0/0 following other monomers Is also good.
- Examples of the other monomers include ⁇ -olefins having 3 to 20, preferably 3 to 8 carbon atoms; and vinyl monomers such as vinyl acetate and ethyl acrylate.
- ⁇ -olefins used as other monomers include, for example, propylene, 1-butene, 4-methyl-1-pentene, 1-hexene and 1-otaten.
- Other monomers are One type can be used alone, or two or more types can be used in combination.
- the polyethylene resin (C5-1) can be used alone, or two or more kinds can be used in combination.
- ethylene- ⁇ -olefin copolymer (C5-2) a known ethylene- ⁇ -olefin copolymer can be used.
- the viscosity of the ethylene- ⁇ -olefin copolymer (C5-2) is ML (100 ° C), JIS
- K6300 is 90 to 250, preferably 100 to 200, and more preferably 110 to 180.
- the content of constituent units derived from ethylene in the ethylene 'a Orefuin copolymer (C5-2) is 70 to 95 Monore 0/0, preferably 70-90 Monore 0/0, more preferably 75 90 mole 0/0, and particularly preferably 75 to 85 mole 0/0.
- the ethylene-a-olefin copolymer (C5-2) may be a copolymer comprising ethylene and ⁇ -olefin having 3 to 20, preferably 3 to 8 carbon atoms, A monomer other than a-olefin may be further copolymerized. Examples of monomers other than a-olefin include non-conjugated polyene.
- ⁇ -olefins copolymerized with ethylene include, for example, propylene, 1-butene, pentene, 4-methyl 1-pentene, and 1- Xen, 1-otaten and the like.
- ⁇ -olefin can be used alone or in combination of two or more.
- examples of the non-conjugated polyene copolymerized with ethylene and ⁇ -olefin include dicyclopentadiene, 1,4-hexadiene, cyclooctadiene, and the like.
- Non-conjugated gens such as methylene norbornene and ethylidene norbornene.
- the non-conjugated polyene can be used alone or in combination of two or more.
- the iodine value of the ethylene / ⁇ -olefin / non-conjugated polystyrene copolymer is usually 0.1 to 50, preferably 5 to 30.
- Ethylene a-olefin copolymer (C5-2) can be used alone or
- Two or more types can be used in combination.
- Ethylene-a-olefin-based copolymer (C5-2) can be obtained by a known method using a known catalyst such as a meta-open catalyst or a vanadium catalyst. Polymer production process (published by the Industrial Research Institute, pp. 309-330) ".
- the ethylene-a-olefin copolymer (C5-2) may be a random copolymer or a block copolymer.
- Component (C5) is an olefinic thermoplastic elastomer obtained by dynamically heat-treating polyethylene resin (C5-1) and an ethylene- ⁇ -olefin copolymer in the absence of a crosslinking agent. is there.
- the contents of the polyethylene resin (C5-1) and the ethylene-ex-olefin copolymer (C5-2) in the component (C5) were determined by comparing the content of the polyethylene resin (C5-1) with the amount of ethylene ⁇ - per 100 wt% of the content of Orefuin copolymer (C5-2), polyethylene ⁇ (C5-1). 5 to 60 weight 0/0, preferably from 10 to 50 weight 0/0, ethylene '
- the a-olefin copolymer (C5-2) is 40 to 95% by weight, preferably 50 to 90% by weight.
- the component (C5) is preferably prepared by treating the elastomer composition containing the polyethylene resin (C5-1) and the ethylene / ⁇ -olefin copolymer (C5-2) with the absence of a crosslinking agent.
- T is the resin temperature (° C) at the die outlet of the twin-screw extruder
- P is the screw diameter (mm) of the twin-screw extruder.
- Q is the maximum shear rate (sec-l) received in the twin-screw extruder
- R is the throughput (kgZh) of the twin-screw extruder.
- Q PX ⁇ X
- S is the screw diameter (mm) of the twin screw extruder
- S is the screw speed per second (rps)
- U is the clearance between the barrel inner wall and the screw kneading segment. Is the distance (mm) of the narrowest part of
- Component (C5) preferably has the following properties (X), (Y) and (Z);
- Pio is the J IS A hardness of the thermoplastic elastomer (measured in accordance with IS K6253 (1997)) (unit: none).
- the tensile strength measured according to JIS K6251 (1993) is 5 to 30 MPa, preferably 8 to 30 MPa, more preferably 12 to 30 MPa.
- the measuring method is as follows;
- JIS A hardness JIS K6253 (1997), instantaneous value using spring type hardness tester A type
- the olefinic thermoplastic elastomer composition which is a raw material for producing the olefinic thermoplastic elastomer (component (C5)) used in the present invention, comprises the polyethylene resin (C5-1) and ethylene. ⁇ alpha-Orefuin series copolymer relative to the total 100 weight 0/0 with (C5-2), polyethylene ⁇ (C5-l) 5 ⁇ 60 weight 0/0, preferably from 10 to 50 weight 0/0 And ethylene- ⁇ -olefin copolymer (C5-2) in an amount of 40 to 95% by weight, preferably 50 to 90% by weight.
- Additional Orefin thermoplastic elastomer first composition based on the total 100 weight 0/0 polyethylene ⁇ and (C5-1) E styrene 'alpha-Orefuin based copolymer (C5-2) , polyethylene emissions ⁇ (C5- 1) 5 to 60 weight 0/0, preferably from 10 to 50 weight 0/0, ethylene 'a Orefuin copolymer (C5-2) 40 to 95 wt%, preferably 50
- the composition is obtained by dynamically heat-treating a mixture containing 9090% by weight in the absence of a crosslinking agent.
- thermoplastic thermoplastic elastomer (component (C5)) used in the present invention and the above-mentioned elastomer composition may contain a polypropylene resin (C5-3).
- a polypropylene resin (C5-3) a known polypropylene resin can be used without limitation. Specific examples include the following polypropylene resins.
- Examples of the above-mentioned other olefins copolymerized with propylene include at olefins having 2 to 20, preferably 2 to 8 carbon atoms, such as ethylene, 1-butene, 4-methyl-1 pentene, 1-hexene, and 1-otaten.
- olefins having 2 to 20, preferably 2 to 8 carbon atoms such as ethylene, 1-butene, 4-methyl-1 pentene, 1-hexene, and 1-otaten.
- the polypropylene resin (C5-3) the propylene homopolymer of 1) and the propylene'a-olefin random copolymer of 2) are particularly preferred, especially the melt flow rate (MFR; ASTM). D 1238, 190 ° C, 2.16 kg load) is preferably from 0.1 to 50 gZlO.
- Polypropylene resin (C5-3) can be used alone or in combination of two or more. Can be used.
- the content of the polypropylene resin (C) in the olefin thermoplastic elastomer (component (C5)) of the present invention and the above-mentioned elastomer composition is determined by comparing the polyethylene resin (C5-1) and the ethylene.
- the amount is preferably 30 parts by weight or less, more preferably 2 to 30 parts by weight, based on 100 parts by weight of the total of the ⁇ -olefin copolymer (C5-2).
- the content of the component (C5) is 1 to 15 parts by weight, preferably 2 to 13 parts by weight based on 100 parts by weight of the total of the non-conjugated polyene copolymer ( ⁇ ) and the gen-based rubber ( ⁇ ). Parts, more preferably 2 to 10 parts by weight.
- the hardness (FIS ⁇ 6253) of the component (C5) is 40 to 90, preferably 50 to 80.
- the polyethylene resin (C5-1) content of the component (C5) is 5 to 60% by weight, preferably 15 to 55% by weight.
- Component (C6) used in the present invention is
- Glass transition temperature is less than 25 ° C
- a-olefin ' is a non-conjugated gen copolymer.
- ⁇ -olefin having 2 to 20 carbon atoms particularly ⁇ -olefin having 2 to 8 carbon atoms is preferable.
- ⁇ -olefins include, but are not limited to, ethylene, propylene, 1-butene, 1-hexene, 1-otaten, and 4-methyl-1pentene.
- ⁇ -olefins may be used alone or in combination of two or more. In particular, it is preferable to use a combination of ethylene and 0 L-olefin having 3 or more carbon atoms. (Non-conjugated polyene)
- the non-conjugated polyene used for the component (C6) is a norbornene compound represented by the following general formula [I] or [ ⁇ ].
- n is an integer of 0 to 10
- R 1 is a hydrogen atom or an alkyl group having 1 to 10 carbon atoms
- R 2 is a hydrogen atom or 1 to 5 carbon atoms. Is an alkyl group.
- R 1 is an alkyl group having 1 to 10 carbon atoms such as methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, sec-butyl, t-butyl, n-pentyl , An isopentyl group, a t-pentyl group, a neopentyl group, a hexyl group, an isohexyl group, a heptyl group, an octyl group, a Noel group, and a decyl group.
- Examples of the alkyl group having 1 to 5 carbon atoms, R 2, among the specific examples of the R 1, include an alkyl group having 1 to 5 carbon atoms.
- R 3 is a hydrogen atom or an alkyl group having 1 to carbon atoms: L0
- alkyl group for R 3 include the same alkyl groups as those described above for the alkyl group for R 1 .
- Examples of the norbornene conjugate represented by the above general formula [I] or [II] include 5-methylene-2-norbornene, 5-bul-2-norbornene, and 5- (2-proberyl) -2- Norbornene, 5- (3-butulyl) -2-norbornene, 5- (1-methyl-2-probyl) -2-norbornene, 5- (4-pentane) -2-norbornene, 5- (1 -Methyl-3-butenyl) -2-norbornene, 5- (5-hexyl) -2-norbornene, 5- (1-methyl-4-pentyl) -2-norbornene, 5- (2 , 3-Dimethyl-3-butenyl) -2-norbornene, 5- (2-ethyl-3-butul) -2-norbornene, 5- (6
- norbornene compounds can be used alone or in combination of two or more.
- the component (C6) used in the present invention is an oc-one-year-old olefin 'non-conjugated gen copolymer, preferably a random copolymer of ethylene and ⁇ -olefin with a non-conjugated polyene.
- the content of the non-conjugated polyene used in the synthesis of the component (C6) in the component (C6) was defined as 100 mol% of the sum of the ⁇ -olefin and the non-conjugated polyenes [I] and [ ⁇ ]. In this case, the content is 0.1 to 30% by mole, preferably 0.1 to 10% by mole, and more preferably 0.1 to 5% by mole.
- the glass transition temperature of the component (C6) is less than ⁇ 25 ° C., preferably ⁇ 28 ° C. or less, and more preferably 30 ° C. or less.
- the glass transition temperature (Tg) was determined by measuring the temperature dependence of tan ⁇ by a viscoelasticity test.
- a polymer sheet having a thickness of 2 mm was measured using a viscoelasticity tester (viscoelasticity tester manufactured by Rheometrics; model RDS-2) at a measurement temperature of ⁇ 70 to 30 ° C., a frequency of 10 Hz, and a strain of 10%.
- the temperature dependence of the loss tangent tan ⁇ (index of vibration damping) is measured under the conditions of a rate of 0.5% and a heating rate of 4 ° CZ, and the temperature at which tan ⁇ is maximum is the glass transition temperature (Tg).
- Tg glass transition temperature
- the iodine value of the component (C6) is 0.5 to 50 (gZ100g), preferably 0.8 to 40 (gZ100g), more preferably 1 to 30 (gZ100g), and particularly preferably 1.5 (gZ100g). 2525 (gZlOOg).
- the intrinsic viscosity [7?] Of the component (C6) measured in decalin at 135 ° C. is 0.01 to: LOdlZg, preferably 0.01 to 7 dlZg, more preferably 0.5 to 5 dlZg.
- the viscosity of the component (C6) is preferably 1 (ML (150 ° C), JIS K6300).
- a-olefin comprises ethylene and a-olefin having 3 or more carbon atoms
- the structural unit derived from ethylene (a) and the structural unit derived from ⁇ -olefin (b) (having 3 or more carbon atoms) are combined with 35/65 to 95/5, preferably 50/50 to 90/10 And more preferably 55Z45 to 85Z15, particularly preferably 60,40 to 80,20 in a molar ratio [(a) / (b)].
- the component (C6) is obtained by reacting the a-olefin and the non-conjugated polyene with VO (OR) X (n3-n, wherein R is a hydrocarbon group, X is a halogen atom, and n is A soluble vanadium compound represented by 0 or an integer from 1 to 3), or VX (X is a halogen atom).
- the content of the component (C6) is 1 to 15 parts by weight, preferably 2 to 15 parts by weight, based on 100 parts by weight of the total of the non-conjugated polyene-based copolymer (A) and the gen-based rubber (B). To 13 parts by weight, more preferably 2 to 10 parts by weight.
- One or two or more (X-olefins having 2 or more carbon atoms) and a non-conjugated polyene represented by the following formula (2-1) are obtained by copolymerization;
- Glass transition temperature is less than 25 ° C
- a-olefin ' is a non-conjugated gen copolymer.
- ⁇ -olefin having 2 to 20 carbon atoms particularly ⁇ -olefin having 2 to 8 carbon atoms is preferable.
- ⁇ -olefins include, but are not limited to, ethylene, propylene, 1-butene, 1-hexene, 1-otaten, and 4-methyl-1pentene.
- ⁇ -olefins may be used alone or in combination of two or more.
- the non-conjugated polyene used for the component (C7) is represented by the following general formula (2-1).
- p and q are 0 or 1 (however, p and q are not 0 at the same time), f is an integer from 0 to 5 (if both p and q are 1, f is not 0),
- g is an integer from 1 to 6
- R 5 , R 6 and R 7 are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms,
- R 8 is an alkyl group having 1 to 3 carbon atoms
- n is an integer of 1 to 5
- R 1Q and R 11 are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms
- R 12 is an alkyl group having 1 to 3 carbon atoms.
- R 9 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.
- Ri to R 5 are each independently a hydrogen atom, a methyl group or an ethyl group. However, R 4 and R 5 cannot be hydrogen atoms at the same time. ]
- the non-conjugated triene represented by the above formula (2-2) may be a non-conjugated triene or tetraene represented by the above formula (2-1) wherein f is 0, g is 2, p is 0, q is 1, R 5 and R 6 are non-conjugated trienes which are hydrogen atoms.
- Examples of the non-conjugated triene or tetraene (A2b-1) represented by the formula (2-1) include the following compounds (excluding the compound included in the formula (2-2)).
- H 2 C CH— [CH 2 -C Three
- Examples of the non-conjugated triene (A2b-2) represented by the above formula (2-2) include the following compounds. [0139] [Formula 24]
- non-conjugated trienes (A2b-2) 4,8-dimethyl-1,4,8-decatriene, which is the first exemplified, is preferable.
- the non-conjugated polyene represented by the formulas (2-1) and (2-2) is generally a non-conjugated polyene used as a monomer in the present invention as a monomer having a geometric isomer structure (trans-form, cis-form).
- A2b) may be a mixture of trans form and cis form, or may be trans form alone or cis form alone.
- the component (C7) used in the present invention is a thiolein 'non-conjugated gen copolymer, preferably a random copolymer of ethylene and ⁇ -olefin with a non-conjugated polyene.
- the content of the non-conjugated polyene used in the synthesis of the component (C7) is as follows. Assuming that the total of polyene [I] and [100] is 100 mol%, it is 0.1 to 30 mol%, preferably 0.5 to 10 mono%, and more preferably 0.5 to 7 mono%. .
- the glass transition temperature of the component (C7) is less than ⁇ 25 ° C., preferably ⁇ 28 ° C. or less, and more preferably 30 ° C. or less.
- the glass transition temperature (Tg) can be determined by measuring the temperature dependence of tan ⁇ by a viscoelasticity test.
- a polymer sheet having a thickness of 2 mm was measured using a viscoelasticity tester (viscoelasticity tester manufactured by Rheometrics; model RDS-2) at a measurement temperature of ⁇ 70 to 30 ° C., a frequency of 10 Hz, and a strain of 10%.
- the temperature dependence of the loss tangent tan ⁇ (index of vibration damping) is measured under the conditions of a rate of 0.5% and a heating rate of 4 ° CZ, and the temperature at which tan ⁇ is maximum is the glass transition temperature (Tg).
- Tg glass transition temperature
- the iodine value of the component (C7) is 0.5 to 60 (gZlOOg), preferably 1 to 60 (gZl00g), and more preferably 5 to 50 (gZlOOg).
- the intrinsic viscosity [7?] Of the component (C7) measured in decalin at 135 ° C. is 0.01 to: LOdlZg, preferably 0.01 to 7 dlZg, more preferably 0.5 to 5 dlZg.
- the component (C7) preferably has a viscosity of 1 to 1 [ML (100 ° C), JIS K6300].
- the component (C7) has a structural unit (a) derived from ethylene and ⁇ -olefin (b) (carbon number Is 3 or more) and 35 / 65-95 / 5, preferably 50-90 / 10, more preferably 60 / 40-85 / 15, and particularly preferably Also contained at a molar ratio of 65/35 to 85/15 [(a) / (b)]!
- the component (C7) is obtained by reacting the a-olefin and the non-conjugated polyene with VO (OR) X (n3-n, wherein R is a hydrocarbon group, X is a halogen atom, and n is A soluble vanadium compound represented by 0 or an integer from 1 to 3), or VX (X is a halogen atom).
- the content of the component (C7) is 1 to 15 parts by weight, preferably 2 to 15 parts by weight, based on 100 parts by weight of the total of the non-conjugated polyene-based copolymer (A) and the gen-based rubber (B). To 13 parts by weight, more preferably 2 to 10 parts by weight.
- the component (C8) used in the present invention is a modified polymer obtained by modifying any of the components (Cl), (C2), (C3), (C6) and (C7) with a polar group-containing unsaturated compound. It is.
- the polar group-containing unsaturated compound is specifically an unsaturated compound having a group containing a hetero atom.
- Heteroatoms include, for example, oxygen, nitrogen, zeolite, halogen, and the like.
- an acid anhydride group which is preferably an ester group, a carboxylic acid group, an OH group, an epoxy group, or an acid anhydride group, is particularly preferable.
- Examples of the polar group-containing unsaturated compound 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, a vinyl ester compound, and a salt. ⁇ ⁇ ⁇ and others.
- hydroxyl group-containing ethylenically unsaturated compound examples include hydroxyethyl (meth) acrylate, 2-hydroxy-3-phenoxymonopropyl (meth) acrylate, 3-chloro-2-hydroxypropyl Pill (meta) acrylate, glycerin mono (meta) acrylate, pentaerythritol mono (meta) acrylate, trimethylolpropane mono (meth) acrylate, tetramethylolethane mono (meth) acrylate, butanediol mono ( (Meth) acrylates, polyethylene glycol mono (meth) acrylates, (meth) acrylates such as 2- (6-hydroxyhexanoyloxy) ethyl acrylate, 10-pandene-1-ol, 1-otaten-3- All, 2-methanol norbornene, hydroxystyrene, hydroxyethyl vinyl ether , Hydroxy Buchirubi -
- Examples of the amino group-containing ethylenically unsaturated compound include vinyl monomers having at least one amino group or substituted amino group.
- Examples of such an amino group-containing ethylenically unsaturated compound include aminoethyl (meth) acrylate, propylaminoethyl (meth) acrylate, dimethylaminoethyl methacrylate, aminopropyl (meth) acrylate, and phenyl methacrylate.
- Alkyl or methacrylic acid alkyl ester derivatives such as aminoaminoethyl, cyclohexylaminoethyl methacrylate, etc.Bulamine derivatives such as N-bil-ethylethylamine, N-acetylbi-luamine, etc.Arylamine, methacrylamine, N-methyl Acrylamine derivatives such as acrylamine, ⁇ , ⁇ -dimethylacrylamide, ⁇ , ⁇ -dimethylaminopropyl acrylamide, acrylamide derivatives such as acrylamide, ⁇ -methylacrylamide, and aminostyrenes such as ⁇ -aminostyrene , Kishirukohaku acid imide to 6 Amino, 2-aminoethyl succinimide and the like.
- epoxy group-containing ethylenically unsaturated compound a monomer having at least one polymerizable unsaturated bond and at least one epoxy group in one molecule is used.
- Such epoxy group-containing ethylenically unsaturated compounds include, for example, mono- and diglycidyl esters of maleic acid, mono- and diglycidyl esters of fumaric acid, mono- and diglycidyl esters of fumaric acid, such as glycidyl atalylate and glycidyl methacrylate.
- Examples of the 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, and bicyclo [2, Examples include unsaturated carboxylic acids such as 2,1] hept-2-ene-5,6-dicarboxylic acid and derivatives thereof (eg, acid anhydrides, acid halides, amides, imides, esters, etc.).
- Examples of this derivative include maleic chloride, maleic imide, maleic anhydride, itaconic anhydride, citraconic anhydride, tetrahydrophthalic anhydride, and bicyclo [2,2,1] hept-2-e.
- (meth) acrylic acid, maleic anhydride, hydroxyethyl (meth) acrylate, glycidyl methacrylate, and aminopropyl methacrylate are preferred.
- butyl ester compound examples include butyl acetate, butyl propionate, butyl n-butyrate, butyl isobutyrate, butyl pivalate, butyl caproate, versatate, vinyl laurate, butyl stearate, benzoate, Examples include pt-butyl benzoate, salicylate, cyclohexanecarboxylate and the like.
- epoxy group-containing ethylenically unsaturated compounds for example, (meth) acrylic acid, (meth) acrylic acid alkyl ester
- maleic anhydride and glycidyl (meth) acrylate are particularly preferred, and maleic anhydride and glycidyl (meth) acrylate are particularly preferred.
- the modified polymer is produced by graft-modifying the components (Cl), (C2), (C3), (C6), and (C7) by a conventionally known method, for example, a method such as melt modification using an extruder. Can do.
- the graft modification is usually performed in the presence of a radical initiator.
- a radical initiator an organic peroxide compound or an azoi compound can be used.
- Graft modification with a polar group-containing unsaturated compound of any of the components (Cl), (C2), (C3), (C6), and (C7) can be performed by a conventionally known method. ), (C2), (C3), (C6), or (C7) is dissolved in an organic solvent, and then a polar monomer and a radical initiator are added to the solution and reacted. . It is also possible to produce a modified random copolymer by reacting (CI), (C2), (C3), (C6), and (C7) with a polar group-containing unsaturated compound without using a solvent such as an extruder. it can.
- the amount of modification is usually 0.1 to 10 as the binding amount of the polar group-containing unsaturated compound with respect to 100% by weight of any of the above components (Cl), (C2), (C3), (C6) and (C7). % By weight, preferably from 0.1 to 5% by weight.
- the content of the component (C8) is 1 to 15 parts by weight, preferably 2 to 15 parts by weight, based on 100 parts by weight of the total of the non-conjugated polyene-based copolymer (A) and the gen-based rubber (B). To 13 parts by weight, more preferably 2 to 10 parts by weight.
- Component (C9) used in the present invention is a nonionic surfactant, a cationic surfactant, an anionic surfactant or an amphoteric surfactant containing a hydrophilic group and a lipophilic group, or a mixture thereof. A mixture of two or more of them.
- nonionic surfactant examples include polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene higher alcohol ether, and polyoxyethylene octylphenyl.
- Ether polyoxyethylene nonylphenyl ether, polyoxyethylene alkyl ether, polyoxyethylene myristyl ether, polyoxyethylene octyl dodecyl ether, polyoxyethylene alkylene alkyl ether, polyoxyethylene distyrenated phenyl ether, polyoxyethylene derivative , Polio Xylethylene polyoxypropylene glycol, polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan tristearate, polyoxyethylene sorbitan monooleate, Polyoxyethylene sorbitan trioleate, polyoxyethylene sorbite tetraoleate, glycerol monostearate, glycerol monooleate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan distearate, sorbitan trilate Stearate, sorbitan
- Examples of the cationic surfactant include coconutamine acetate, stearylenoamine acetate, lauryltrimethylammonium-pum chloride, stearyltrimethylammonium-pumchloride, cetyltrimethylammonium-pumchloride, distearyldimethylammonium acetate. Dumchloride and alkylbenzyldimethylammonium chloride.
- anionic surfactant examples include mixed fatty acid soda soap, semi-hardened tallow fatty acid soda soap, sodium stearate soap, semi-hardened tallow fatty acid potassium soap, oleic acid soap, castor oil potassium soap, and lauryl sulfate.
- amphoteric surfactant examples include lauryl betaine, stearyl betaine, 2-alkyl N carboxymethyl-N hydroxyethylimidazoli-dumbetaine, lauryl dimethyl Amine oxide and the like.
- nonionic surfactants and amphoteric surfactants are preferred.
- the HLB value (see Griffin, J. soc. Cosmetic Chemists, 1, 311 (1949)) of the nonionic surfactant is preferably in the range of 1.5 to 19.
- the content of the component (C9) depends on the content of the non-conjugated polyene-based copolymer (A) and the gen-based rubber.
- the rubber composition of the present invention may contain a petroleum resin (D)!
- Such petroleum resins (D) include cumarone's indene resin, phenol 'formaldehyde resin, terpene' phenol resin, polyterpene resin, xylene 'formaldehyde resin, synthetic polyterpene resin, and petroleum-based resin.
- Examples include hydrocarbon resins, rosin derivatives, atactic 'polypropylene, and cis-1,4 polyisoprene rubber.
- petroleum cyclic hydrocarbon resins, phenol'formaldehyde resins, and cumarone'indene resins are preferred.
- the blending of the petroleum resin (D), which preferably includes the petroleum resin (D), provides excellent braking performance and fuel efficiency.
- a tire composition can be formed, and a rubber composition excellent in appearance, mechanical strength, and fatigue resistance can be obtained.
- the content of the petroleum resin (D) is 1 to 30 parts by weight, preferably 1 to 30 parts by weight, based on 100 parts by weight of the total of the non-conjugated polyene copolymer (A) and the diene rubber (B). -20 parts by weight, more preferably 1-10 parts by weight.
- the rubber composition obtained by the production method of the present invention is a vulcanizable rubber composition, and exhibits more excellent properties when used as a force vulcanizate that can be used without being vulcanized. be able to.
- Vulcanization can be performed by a method of heating using a vulcanizing agent, or a method of irradiating an electron beam without using a vulcanizing agent.
- a vulcanizing agent and a vulcanizing agent are added to the rubber composition.
- Compounds constituting a vulcanization system such as a vulcanization accelerator and a vulcanization aid can be blended.
- a vulcanization agent zeolite, zeolite compounds, organic peroxides, and the like can be used.
- the form of the solid is not particularly limited, and for example, it may be powdery, sedimented, colloidal, surface-treated, insoluble, or the like.
- the thio compound include chlorinated salt, dichloride, high molecular polysulfide, morpholine disulphide, alkylphenol disulphide, tetramethylthiuram disulphide, and selenium dimethyldithiocarbamate.
- organic peroxide examples include:
- Ketone peroxides such as dicyclohexanone peroxide
- an organic peroxide having a one-minute half-life temperature of 130 to 200 ° C is preferred.
- io and io compounds are particularly preferable.
- the vulcanizing agent may be a non-conjugated polyene-based compound. It can be used in an amount of 0.1 to: L0 parts by weight, preferably 0.5 to 5 parts by weight, based on 100 parts by weight of the total of the polymer (A) and the gen-based rubber (B).
- the vulcanizing agent is an organic peroxide
- the vulcanizing agent is added in an amount of 0.1 part by weight based on a total of 100 parts by weight of the non-conjugated polyene-based copolymer (A) and the gen-based rubber (B). It can be used in an amount of from 05 to 15 parts by weight, preferably from 0.15 to 5 parts by weight.
- a vulcanization accelerator in combination.
- the vulcanization accelerator As the vulcanization accelerator,
- Sulfenamide-based compounds such as N-cyclohexyl-2-benzothiazolesulfenamide (CBS), N-oxyxethylen-2-benzothiazolesulfenamide, ⁇ , ⁇ -diisopropyl-2-benzothiazolesulfenamide;
- Guadine compounds such as dipheninoleguanidine, tripheninoleguanidine, diurenosonitrinoleguanidine, diureno nitrile biguanide, diphenyl guanidine phthalate, etc .; reactants of acetoaldehyde-phosphorus, butylaldehyde Aldeamine or aldehyde ammonia compounds such as doa-phosphorus condensate, hexamethylenetetramine and acetoaldehyde ammonia;
- Imidazoline compounds such as 2-mercaptoimidazoline
- Thiourea-based compounds such as thiocanolevalanilide, getinorethiourea, dibutinorethiourea, trimethinorethiourea, jorsotrilythiourea;
- Tetramethylthiuram monosulfide tetramethylthiuram disulphide (TMTD), tetraethylthiuram disulphide, tetrabutylthiuram disulphide, pentamethylenethiuram tetrasulfide, dipentamethylenethiuram tetrasulfide Thiuram-based compounds such as (DPTT);
- the vulcanization accelerator is used in an amount of 0.1 to 20 parts by weight, preferably 0.2 to 20 parts by weight, based on a total of 100 parts by weight of the non-conjugated polyene-based copolymer (A) and the gen-based rubber (B). It can be used in an amount of 10 parts by weight.
- the vulcanizing aid When an organic peroxide is used as the vulcanizing agent, it is preferable to use the vulcanizing aid together in an amount of 0.5 to 2 mol, and preferably approximately equimolar to 1 mol of the organic peroxide.
- the vulcanization aid include: quinone dioxime compounds such as P-quinone dioxime, and polyfunctional monomers such as (meth) acrylate compounds such as trimethylolpropane triatalylate and polyethylene glycol dimetharate; Aryl compounds such as diaryl phthalate and triaryl cyanurate; maleimide compounds such as m- phenyl-bismaleimide; and dibutylbenzene.
- the rubber composition obtained by the production method according to the present invention may also contain additives such as a reinforcing agent.
- a reinforcing agent include carbon blacks such as SRF, GPF, FEF, MAF, HAF, ISAF, SAF, FT, and MT; surface-treated carbon black obtained by surface-treating these carbon blacks with a silane coupling agent; silica; Inorganic fillers such as calcium carbonate, light calcium carbonate, heavy calcium carbonate, finely divided talc, talc, finely divided calcium acid, and sauce.
- the compounding amount of the reinforcing agent is 300 parts by weight or less, preferably 10 to 300 parts by weight, based on a total of 100 parts by weight of the non-conjugated polyene-based copolymer (A) and the gen-based rubber (B). More preferably, it can be used at 10 to 200 parts by weight.
- the rubber composition contains such an amount of the reinforcing agent, it is possible to obtain a vulcanized rubber having improved mechanical properties such as tensile strength, tear strength and abrasion resistance.
- the hardness can be increased without impairing the other physical properties of the rubber Costs can be reduced.
- softener a softener conventionally compounded in rubber is widely used.
- softeners include:
- Petroleum softeners such as paraffin-based process oils, naphthenic-based process oils, and aroma-based process oils
- Cornet lettering based softeners such as cone lettering and cone lettering pitch
- Vegetable oil softeners such as castor oil, cinnamon oil, linseed oil, rapeseed oil, coconut oil, palm oil, soybean oil, peanut oil, wood wax, rosin, pine oil, dipentene, pine tar, tall oil;
- Waxes such as beeswax, canola naenoku wax and lanolin
- Fatty acids and fatty acid salts such as ricinoleic acid, palmitic acid, myristic acid, barium stearate, calcium stearate, magnesium stearate, zinc stearate, zinc laurate;
- Ester plasticizers such as dioctyl phthalate, dioctyl adipate and dioctyl sebacate;
- Phenol and terpene resins such as phenol 'formaldehyde resin, terpene phenol resin and polyterpene resin;
- Synthetic polyterpene resin aromatic hydrocarbon resin, aliphatic hydrocarbon resin, aliphatic cyclic hydrocarbon resin, aliphatic ⁇ alicyclic petroleum resin, aliphatic ⁇ aromatic petroleum resin , Petroleum hydrocarbon resins such as hydrogenated modified alicyclic hydrocarbon resins, hydrogenated hydrocarbon resins, liquid polybutene, liquid polybutadiene, atactic polypropylene;
- aroma-based process oils are preferred among petroleum-based softeners.
- a material corresponding to petroleum resin (D) may be further selected as a softening agent. You can choose!
- the blending amount of the softener is the total of the non-conjugated polyene-based copolymer (A) and the gen-based rubber (B).
- the amount is 200 parts by weight or less, preferably 10 to 200 parts by weight, more preferably 10 to 150 parts by weight, per 100 parts by weight.
- the rubber composition obtained by the production method of the present invention a compound constituting a foaming system such as a foaming agent and a foaming aid, an antioxidant (stabilizer), and a processing aid
- a compound constituting a foaming system such as a foaming agent and a foaming aid, an antioxidant (stabilizer), and a processing aid
- agents such as agents, plasticizers, coloring agents, and other rubber compounding agents can be compounded.
- the type and content of these components are appropriately selected according to the application.
- the rubber composition obtained by the production method of the present invention contains a compound constituting a foaming system such as a foaming agent and a foaming aid, it can be foam-molded.
- a foaming agent a foaming agent generally used for foaming rubber can be widely used.
- Such foaming agents include:
- Inorganic foaming agents such as sodium bicarbonate, sodium carbonate, ammonium bicarbonate, ammonium carbonate, ammonium nitrite;
- -Torso compounds such as ⁇ , ⁇ '-dimethyl- ⁇ ⁇ , ⁇ '-di-trosoterephthalamide and ⁇ ⁇ , ⁇ '-di-trosopentamethylenetetramine;
- Azo compounds such as azodicarbonamide, azobisisobutyronitrile, azocyclohexyl nitrile, azo diaminobenzene, norium azodicarboxylate;
- Sulfonylhydrazide conjugates such as benzenesulfolhydrazide, toluenesulfolhydrazide, ⁇ , ⁇ '-oxybis (benzenesulfolhydrazide), diphenylsulfone-3,3 and disulfol-hydrhydrazide;
- a nitroso compound, an azoi compound and an azide compound are preferred.
- the foaming agent is used in an amount of 0.5 to 30 parts by weight, preferably 1 to 20 parts by weight based on 100 parts by weight of the total of the non-conjugated polyene-based copolymer (A) and the gen-based rubber (B). Can be used. From the rubber composition containing the foaming agent in such an amount, a foam having an apparent specific gravity of 0.03 to 0.8 g / cm 3 can be produced.
- a foaming aid can be used together with the foaming agent.
- the foaming agent has effects such as lowering the decomposition temperature, accelerating the decomposition, and making the bubbles uniform.
- examples of such a foaming aid include organic acids such as salicylic acid, phthalic acid, stearic acid and oxalic acid, urea and derivatives thereof.
- the foaming aid is used in an amount of 0.01 to 10 parts by weight, preferably 0.1 to 5 parts by weight, based on 100 parts by weight of the total of the non-conjugated polyene-based copolymer (A) and the gen-based rubber (B). Can be used in parts quantity
- the rubber composition obtained by the production method of the present invention preferably contains an anti-oxidation agent from the viewpoint that the material life can be prolonged.
- an antioxidant include aromatic naphthylamine, 4,4-di (a, a-dimethylbenzyl) diphenamine, and ⁇ , ⁇ '-di-2-naphthyl- ⁇ -phenylenediamine.
- Phenols such as 2,6-di-t-butyl-4-methylphenol, tetrakis- [methylene-3- (3 ', 5'-di-t-butyl-4'-hydroxyphenyl) propionate] methane Stabilizer;
- Thioether stabilizers such as bis [2-methyl-4- (3-n-alkylthiopropio-loxy) -5-t-butylphenyl] sulfide; benzimidazole based stabilizers such as 2-mercaptobenzoimidazole Agent;
- Dithiol-rubbamate-based stabilizers such as nickel dibutyldithiocarbamate
- Quinoline stabilizers such as polymers of 2,2,4-trimethyl-1,2-dihydroquinoline
- the antioxidant is used in an amount of 5 parts by weight or less, preferably 3 parts by weight or less based on 100 parts by weight in total of the non-conjugated polyene-based copolymer (A) and the gen-based rubber (B). Can be used.
- auxiliaries include acids such as ricinoleic acid, stearic acid, palmitic acid and lauric acid, and salts of these higher fatty acids such as barium stearate, zinc stearate, calcium stearate and esters.
- the processing aid is used in an amount of 10 parts by weight or less, preferably 5 parts by weight or less based on 100 parts by weight of the total of the non-conjugated polyene-based copolymer (A) and the gen-based rubber (B). Can be. ⁇ Method for producing rubber composition>
- the rubber composition of the present invention can be prepared by a general rubber compound preparation method from the non-conjugated polyene-based copolymer (A), the gen-based rubber (B), and other components to be blended if necessary.
- Can be prepared for example, using an internal mixer such as a Bannori mixer, kneader, or intermix, the non-conjugated polyene-based copolymer (A), the gen-based rubber (B), and other components to be blended if necessary are mixed with an 80-170 After kneading at a temperature of ° C for 3 to 10 minutes, a vulcanizing agent and, if necessary, a vulcanization accelerator, a vulcanizing aid, a foaming agent, etc., are added, and the lorenores such as an open laurette or a soda are added.
- an internal mixer such as a Bannori mixer, kneader, or intermix
- a ribbon-shaped or sheet-shaped rubber composition (compounded rubber) is usually obtained.
- a vulcanizing agent, a vulcanization accelerator, a foaming agent and the like can be simultaneously kneaded.
- the non-conjugated polyene-based copolymer (A) and the Z or conjugated diene-based rubber (B) may be partially or entirely mixed with a softening agent before preparing the rubber composition.
- a softening agent for example, when the softener is oil, the oil-extended non-conjugated polyene-based copolymer in which the oil has been blended and the gen-based rubber in which the oil has been blended in advance have been oil-extended. Sometimes called system rubber.
- the blending amount of the softening agent is not particularly limited, but it is preferable that the softening agent is 100 parts by weight or less per 100 parts by weight of the non-conjugated polyene copolymer (A).
- the vulcanized product (vulcanized rubber) of the rubber composition obtained by the production method of the present invention is obtained by subjecting the unvulcanized rubber composition as described above to an ordinary extruder, calender roll, press, injection molding, or the like. Preforming into a desired shape by various molding methods using a molding machine such as a molding machine or a transfer molding machine, and heating at the same time as molding or by introducing the molded product into a vulcanization tank, or using an electron beam. It can be obtained by vulcanization by irradiation.
- a foam an unvulcanized rubber compound containing a foaming agent is vulcanized by the method described above, whereby foaming proceeds with vulcanization to obtain a foam.
- a heating tank such as hot air, a fluidized bed of glass beads, UHF (ultra-high frequency electromagnetic wave), steam or LCM (hot molten salt tank) is used.
- a heating tank such as hot air, a fluidized bed of glass beads, UHF (ultra-high frequency electromagnetic wave), steam or LCM (hot molten salt tank) is used.
- UHF ultra-high frequency electromagnetic wave
- steam or LCM hot molten salt tank
- the preformed rubber composition absorbs an electron beam having an energy of 0.1 to 10 MeV, preferably 0.3 to 2 MeV. Irradiation may be performed so that the dose is 0.5 to 35 Mrad, preferably 0.5 to LOMrad.
- a mold may be used or a mold may not be used. When a mold is not used, the rubber composition is usually continuously molded and vulcanized.
- the rubber composition according to the present invention contains a non-conjugated polyene-based copolymer (A), a gen-based rubber (B), and a component (C).
- the rubber composition according to the present invention can be widely used as a raw material for rubber products, it can be suitably used as a rubber material for tires.
- Specific examples of rubber materials for tires include materials such as tire treads and tire sidewalls.
- the rubber composition according to the present invention which is most preferably used as a material (raw material) for a tire tread, exhibits the characteristics most effectively, and exhibits excellent braking performance and excellent fuel efficiency. It is possible to obtain a tire that is compatible and has excellent weather resistance, ozone resistance, etc., and particularly excellent mechanical properties and fatigue resistance. Further, a tire having excellent wear resistance can be obtained.
- the rubber composition according to the present invention comprises the non-conjugated polyene-based copolymer (A), the gen-based rubber (B), the component (C), and a petroleum resin added as needed. (D) only Or other rubbers, other resins, vulcanizing agents, vulcanization aids, vulcanization accelerators, fillers and other components, such as the aforementioned additives, etc. Yo,
- the total content of the non-conjugated polyene-based copolymer (A) and the gen-based rubber (B) in the rubber composition according to the present invention is 3% by weight or more, preferably 5% by weight or more, and the upper limit is particularly limited. But not more than 90% by weight.
- the sum of components (A), (B) and (C) and petroleum resin (D) added as needed should be 3.03 ⁇ : LOO wt% based on the total composition. Is preferred.
- the rubber composition according to the present invention has excellent rubber elasticity, weather resistance, and ozone resistance, and particularly has excellent mechanical properties and fatigue resistance.
- the rubber composition is also excellent in abrasion resistance. Therefore, when the rubber composition according to the present invention is applied, excellent braking performance and excellent fuel economy are compatible, rubber elasticity, weather resistance, and ozone resistance are excellent, and particularly, mechanical properties and fatigue resistance are improved. Excellent tires can be obtained. Further, a tire having excellent wear resistance can be obtained.
- the rubber material for a tire according to the present invention is characterized by comprising the rubber composition of the present invention.
- the rubber material for a tire according to the present invention has both excellent braking performance and excellent fuel economy performance, and the rubber material for a tire according to the present invention has excellent rubber elasticity, weather resistance and ozone resistance, In particular, it has excellent mechanical properties and fatigue resistance.
- the rubber material is also excellent in abrasion resistance. Therefore, when the rubber material for a tire according to the present invention is applied, excellent braking performance and excellent fuel efficiency are compatible, rubber elasticity, weather resistance, and ozone resistance are excellent, and particularly, mechanical properties and fatigue resistance are improved. Excellent tires can be obtained. Also, a tire having excellent wear resistance can be obtained.
- the tire tread according to the present invention is formed using the rubber material for a tire according to the present invention.
- a tire tread obtained by vulcanizing the rubber material for a tire of the present invention is applied, excellent braking performance and excellent fuel economy are compatible, and rubber elasticity, weather resistance, and ozone resistance are also excellent.
- a tire excellent in mechanical properties and fatigue resistance can be obtained. Also excellent in wear resistance You can get tires.
- the tire according to the present invention includes the tire tread of the present invention.
- the tire according to the present invention has both excellent braking performance and excellent fuel efficiency, and also has excellent rubber elasticity, weather resistance and ozone resistance, and particularly excellent mechanical properties and fatigue resistance. Further, the tire has excellent wear resistance.
- composition, ML viscosity, and glass transition temperature (Tg) of the non-conjugated polyene-based copolymer (A) were measured or determined by the following methods.
- Non-conjugated polyene copolymer (A) The composition was measured by 1 H-NMR method.
- the ML viscosity was measured at 100 ° C in accordance with JIS K 6300 using a Mu-1-1 picometer (model SMV-201) manufactured by Shimadzu Corporation [ML (100 ° C) ] Was measured.
- the synthesis of the non-conjugated poly (ene) -based copolymer (A) was carried out under the raw material supply conditions shown in Table 1 below, using a 300L reactor equipped with a SUS stirrer, maintaining the temperature at 40 ° C and maintaining the liquid level at 100L. As a continuous method.
- the polymerization solution after polymerization was subjected to standard demineralization, and a polymer (hereinafter, also referred to as “copolymer 1 (EPT)”) was obtained by steam stripping.
- EPT polymer 1
- ethoxyvanadium oxide dichloride was used as the main catalyst.
- Museskik mouth lid was used as the main catalyst.
- Copolymer 1 (EPT) had a composition of 60.9 mol% of a constitutional unit derived from ethylene, 30. lmol% of a constitutional unit derived from propylene, and 9. a constitutional unit derived from ENB (5-ethylidene-2 norbornene). Omol%, and the viscosity of the copolymer 1 (EPT) is ML (100 ° C).
- JIS K6300 was 55, and the vitrification temperature (Tg) was -5 ° C.
- the yield of copolymer 1 (EPT) was 0.71 kg per hour.
- Table 3 shows the composition, physical properties, and the like of the obtained non-conjugated polystyrene-based copolymer.
- ⁇ Copolymer 2 (EBT ) a non-conjugated polyene copolymer (A) (hereinafter referred to as ⁇ Copolymer 2 (EBT ) ”).
- the yield of copolymer 2 (EBT) was 0.71 kg per hour.
- Component (A) (Copolymer 1 (EPT)), Component (B) (SBR, BR), Component (C) (Niutarel Ni l 10H), silica, coupling agent MB, 1.7 liter sealed
- EPT Copolymer 1
- B Component
- C Component (C) (Niutarel Ni l 10H), silica, coupling agent MB, 1.7 liter sealed
- a rubber composition obtained by mixing the masterbatch, a vulcanization accelerator, and sulfur with a 6-inch open roll having a front and rear roll surface temperature of 50 ° C in a mold of 15 cm X 15 cm X O.
- CX was press vulcanized for 20 minutes to produce a target test sample.
- the physical properties, compounding amounts, trade names, etc. of each component are as shown in Tables 4-6.
- a target test sample was prepared in the same manner as in Example 1 except that the types of the components and the amounts of the components were changed as shown in Tables 4 to 25, respectively.
- the evaluation method of the test sample is as follows.
- a vulcanized rubber sheet was punched out to prepare a No. 3 dumbbell test piece described in JIS K 6251 (2001). Using this test piece, a tensile test was performed at a measurement temperature of 25 ° C and a tensile speed of 500 mmZ in accordance with the method specified in JIS K 6251, and a 100% modulus (M), a 200% modulus (M), 300% modulus (M), tensile stress at break T
- a vulcanized rubber sheet was punched out to prepare a No. 1 type dumbbell test piece described in JIS K 6251, and a 2 mm scratch was made in the longitudinal center of the test piece.
- the five test specimens obtained in this way were tested using a constant elongation, constant load fatigue tester (Model FT 3121) manufactured by Kamishima Seisakusho Co., Ltd., with an elongation ratio of 40%, a set temperature of 23 ° C, and a rotation speed of The specimen was subjected to elongation fatigue under the condition of 300 times Z, and the average value of the number of times of dumbbell cutting and the average value of the stress at the time of cutting were obtained.
- a 2mm thick vulcanized rubber sheet For a 2mm thick vulcanized rubber sheet, it operates under the conditions of ozone concentration 50pphm, measurement temperature 40 ° C, elongation rate (dynamic elongation) 0 ⁇ 25%, frequency 1Hz, in accordance with JIS K 6259 (2001). An ozone resistance test was carried out, and the state of occurrence of cracks 72 hours after the test starting force was observed and evaluated. Each example was evaluated twice. The state of crack occurrence was determined by (i) the number of cracks, (ii) the size and depth of cracks according to the following evaluation criteria, and recorded by combining (i) and (ii). Note that "NC" in the table indicates that a force was applied for which no crack could be confirmed.
- Comparative Example 2 containing the component (A) has improved dynamic ozone resistance, braking performance (tan ⁇ at 10 ° C), and fuel economy (tan ⁇ at 60 ° C). ⁇ , ⁇ , fatigue resistance decreases
- Example 6 using copolymer 2 ( ⁇ ) as the component ( ⁇ ), the fatigue resistance was further improved as compared with the use of copolymer l (EPT) as the component ( ⁇ ) (Table 5, 7, 8).
- Aroma-based process oil Tayanaf process oil AH-24 (Idemitsu Kosan)
- Link 'agent MB Silanogeran Si69 / GR (Seika Sangyo)
- A Polyethylene resin (linear low-density polyethylene)
- Examples 21 to 23 to which the component (C8) was added were all T, E, and fatigue resistant compared to Comparative Example 2.
- Power link agent MB Shiranokuran Si69 / GR (Seika Sangyo)
- the present invention relates to a novel and useful rubber composition containing a non-conjugated polyene-based copolymer, a diene-based rubber and a specific compound.
- the rubber composition can be widely used as a raw material for rubber products, but can be suitably used as a rubber material for tires.
- Specific examples of rubber materials for tires include materials such as tire treads and tire sidewalls. Among these, excellent braking performance and excellent fuel economy, which are the most preferable to use as a tire tread material (raw material), are also compatible, and they are also excellent in weather resistance, ozone resistance, etc. And a tire excellent in fatigue resistance can be obtained.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05736963A EP1757658A4 (en) | 2004-04-28 | 2005-04-28 | RUBBER COMPOSITION AND USE THEREOF |
US11/587,904 US20080188621A1 (en) | 2004-04-28 | 2005-04-28 | Rubber Composition and Use Thereof |
JP2006512858A JP4588700B2 (ja) | 2004-04-28 | 2005-04-28 | ゴム組成物およびその用途 |
Applications Claiming Priority (2)
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JP2004-134710 | 2004-04-28 | ||
JP2004134710 | 2004-04-28 |
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WO2005105913A1 true WO2005105913A1 (ja) | 2005-11-10 |
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PCT/JP2005/008244 WO2005105913A1 (ja) | 2004-04-28 | 2005-04-28 | ゴム組成物およびその用途 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20080188621A1 (ja) |
EP (1) | EP1757658A4 (ja) |
JP (1) | JP4588700B2 (ja) |
KR (1) | KR100807766B1 (ja) |
CN (1) | CN1946790A (ja) |
WO (1) | WO2005105913A1 (ja) |
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JPWO2005105912A1 (ja) * | 2004-04-28 | 2008-03-13 | 三井化学株式会社 | ゴム組成物の製造方法、ゴム組成物およびその用途 |
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WO2019180802A1 (ja) | 2018-03-20 | 2019-09-26 | 三井化学株式会社 | エチレン・α-オレフィン・非共役ポリエン共重合体、その製造方法および用途 |
KR20200118168A (ko) | 2018-03-20 | 2020-10-14 | 미쓰이 가가쿠 가부시키가이샤 | 에틸렌·α-올레핀·비공액 폴리엔 공중합체, 그의 제조 방법 및 용도 |
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Also Published As
Publication number | Publication date |
---|---|
EP1757658A1 (en) | 2007-02-28 |
KR100807766B1 (ko) | 2008-02-28 |
CN1946790A (zh) | 2007-04-11 |
US20080188621A1 (en) | 2008-08-07 |
JPWO2005105913A1 (ja) | 2008-03-13 |
EP1757658A4 (en) | 2010-09-01 |
JP4588700B2 (ja) | 2010-12-01 |
KR20070015431A (ko) | 2007-02-02 |
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