KR100419528B1 - 말단변성 디엔계 공중합체를 포함하는 타이어 트레드용고무 조성물 - Google Patents
말단변성 디엔계 공중합체를 포함하는 타이어 트레드용고무 조성물 Download PDFInfo
- Publication number
- KR100419528B1 KR100419528B1 KR10-2003-0027395A KR20030027395A KR100419528B1 KR 100419528 B1 KR100419528 B1 KR 100419528B1 KR 20030027395 A KR20030027395 A KR 20030027395A KR 100419528 B1 KR100419528 B1 KR 100419528B1
- Authority
- KR
- South Korea
- Prior art keywords
- rubber composition
- conjugated diene
- rubber
- copolymer
- compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 74
- 239000005060 rubber Substances 0.000 title claims abstract description 73
- 239000000203 mixture Substances 0.000 title claims abstract description 34
- 229920001577 copolymer Polymers 0.000 title claims abstract description 31
- 229920002554 vinyl polymer Chemical group 0.000 claims abstract description 28
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 27
- 150000001993 dienes Chemical class 0.000 claims abstract description 25
- -1 diene compound Chemical group 0.000 claims abstract description 17
- 150000001491 aromatic compounds Chemical class 0.000 claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229920001519 homopolymer Polymers 0.000 claims abstract description 12
- 125000001979 organolithium group Chemical group 0.000 claims abstract description 12
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 9
- 239000011256 inorganic filler Substances 0.000 claims abstract description 8
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 8
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 6
- 239000006229 carbon black Substances 0.000 claims abstract description 6
- 150000002367 halogens Chemical group 0.000 claims abstract description 6
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims abstract description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims abstract description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910003849 O-Si Inorganic materials 0.000 claims abstract description 3
- 229910003872 O—Si Inorganic materials 0.000 claims abstract description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical group [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052794 bromium Inorganic materials 0.000 claims abstract description 3
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 3
- 239000000460 chlorine Substances 0.000 claims abstract description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims abstract description 3
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 3
- 239000011737 fluorine Substances 0.000 claims abstract description 3
- 125000005843 halogen group Chemical group 0.000 claims abstract description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 3
- 239000011630 iodine Substances 0.000 claims abstract description 3
- 229910052740 iodine Inorganic materials 0.000 claims abstract description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims abstract description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 40
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 33
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 claims description 28
- 150000001875 compounds Chemical class 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 14
- 239000003999 initiator Substances 0.000 claims description 10
- 238000004073 vulcanization Methods 0.000 claims description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 8
- 229910052717 sulfur Inorganic materials 0.000 claims description 8
- 239000011593 sulfur Substances 0.000 claims description 8
- 239000000178 monomer Substances 0.000 claims description 7
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 125000003118 aryl group Chemical group 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- WGOPGODQLGJZGL-UHFFFAOYSA-N lithium;butane Chemical compound [Li+].CC[CH-]C WGOPGODQLGJZGL-UHFFFAOYSA-N 0.000 claims description 3
- MXFRWBNCSXHXRE-UHFFFAOYSA-N [Li]\C=C\C Chemical compound [Li]\C=C\C MXFRWBNCSXHXRE-UHFFFAOYSA-N 0.000 claims description 2
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 claims description 2
- BLHLJVCOVBYQQS-UHFFFAOYSA-N ethyllithium Chemical compound [Li]CC BLHLJVCOVBYQQS-UHFFFAOYSA-N 0.000 claims description 2
- UBJFKNSINUCEAL-UHFFFAOYSA-N lithium;2-methylpropane Chemical compound [Li+].C[C-](C)C UBJFKNSINUCEAL-UHFFFAOYSA-N 0.000 claims description 2
- XBEREOHJDYAKDA-UHFFFAOYSA-N lithium;propane Chemical compound [Li+].CC[CH2-] XBEREOHJDYAKDA-UHFFFAOYSA-N 0.000 claims description 2
- NHKJPPKXDNZFBJ-UHFFFAOYSA-N phenyllithium Chemical compound [Li]C1=CC=CC=C1 NHKJPPKXDNZFBJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000012454 non-polar solvent Substances 0.000 claims 1
- 238000005096 rolling process Methods 0.000 abstract description 25
- 238000006116 polymerization reaction Methods 0.000 abstract description 23
- 239000007822 coupling agent Substances 0.000 abstract description 13
- 239000003054 catalyst Substances 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract description 5
- 230000000704 physical effect Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 description 25
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 24
- 229920000642 polymer Polymers 0.000 description 24
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 19
- 238000006243 chemical reaction Methods 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 18
- 238000004519 manufacturing process Methods 0.000 description 14
- 229920003048 styrene butadiene rubber Polymers 0.000 description 14
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000005859 coupling reaction Methods 0.000 description 9
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical group [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 9
- 239000005062 Polybutadiene Substances 0.000 description 8
- 229920002857 polybutadiene Polymers 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 238000005160 1H NMR spectroscopy Methods 0.000 description 5
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 125000000524 functional group Chemical group 0.000 description 4
- 230000000977 initiatory effect Effects 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 150000002894 organic compounds Chemical class 0.000 description 3
- 239000003505 polymerization initiator Substances 0.000 description 3
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- 239000005662 Paraffin oil Substances 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 2
- GDOPTJXRTPNYNR-UHFFFAOYSA-N methylcyclopentane Chemical compound CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000010058 rubber compounding Methods 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 238000005987 sulfurization reaction Methods 0.000 description 2
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- GHITVUOBZBZMND-UHFFFAOYSA-N 1,3,5-tris(bromomethyl)benzene Chemical compound BrCC1=CC(CBr)=CC(CBr)=C1 GHITVUOBZBZMND-UHFFFAOYSA-N 0.000 description 1
- 229940126062 Compound A Drugs 0.000 description 1
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 description 1
- NHTMVDHEPJAVLT-UHFFFAOYSA-N Isooctane Chemical compound CC(C)CC(C)(C)C NHTMVDHEPJAVLT-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052789 astatine Inorganic materials 0.000 description 1
- 150000001718 carbodiimides Chemical class 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 1
- JVSWJIKNEAIKJW-UHFFFAOYSA-N dimethyl-hexane Natural products CCCCCC(C)C JVSWJIKNEAIKJW-UHFFFAOYSA-N 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 150000002641 lithium Chemical group 0.000 description 1
- CETVQRFGPOGIQJ-UHFFFAOYSA-N lithium;hexane Chemical compound [Li+].CCCCC[CH2-] CETVQRFGPOGIQJ-UHFFFAOYSA-N 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000010092 rubber production Methods 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
- C08L9/06—Copolymers with styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/30—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule
- C08C19/32—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with halogens or halogen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L19/00—Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
- C08L19/006—Rubber characterised by functional groups, e.g. telechelic diene polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
| 고무 | 제조예 | 비교제조예 | ||||
| 1 | 2 | 3 | 4 | 1 | 2 | |
| 결합스티렌함량(중량부, %) | 25 | 25 | 21 | 21 | 25 | 21 |
| 커플링제 | 화학식 2(실록산 길이=13) | 화학식 2(실록산 길이=7) | 화학식 2(실록산 길이=13) | 화학식 2(실록산 길이=7) | SnCl4 | SnCl4 |
| 커플링전 중량평균분자량(×104) | 15 | 15 | 10 | 10 | 15 | 10 |
| 비닐 함량(몰, %) | 40 | 40 | 63 | 63 | 40 | 63 |
| 분자량분포 | 2.9 | 2.7 | 2.7 | 2.8 | 2.8 | 2.7 |
| 커플링후 중량평균분자량(×104) | 52 | 51 | 34 | 35 | 48 | 33 |
| 중량부 | |
| 고무 중합체 | 100 |
| 파라핀 오일 | 20 |
| 실리카 | 60 |
| 커플링제 | 4.8 |
| 아연 산화물 | 3 |
| 스테아린 산 | 2 |
| 산화방지제 | 1 |
| 황 | 1.5 |
| 가황 촉진제 | 3.3 |
| 타이어 트레드용 고무 | 실시예 | 비교예 | ||||
| 1 | 2 | 3 | 4 | 1 | 2 | |
| 디엔계 공중합체 | 제조예 1 | 제조예 2 | 제조예 3 | 제조예 4 | 비교제조예 1 | 비교제조예 2 |
| 배합전 무늬점도 (ML1+4,100℃) | 76 | 75 | 51 | 52 | 74 | 52 |
| 배합후 무늬점도 (ML1+4,100℃) | 85 | 81 | 60 | 61 | 60 | 43 |
| 롤 가공성 | 우수 | 우수 | 우수 | 우수 | 우수 | 우수 |
| 인장 강도 (kgf/cm2) | 152 | 149 | 128 | 126 | 130 | 110 |
| 300% 모듈러스 (kgf/cm2) | 152 | 149 | 125 | 120 | 126 | 107 |
| 신율(Elongation, %) | 320 | 320 | 310 | 320 | 310 | 310 |
| 습윤 미끌림 저항(tan δ, 0℃) | 0.168 | 0.159 | 0.289 | 0.281 | 0.140 | 0.271 |
| 구름 저항(tan δ, 60℃) | 0.0689 | 0.0687 | 0.0897 | 0.0896 | 0.0729 | 0.0933 |
| 고무 | 제조예 5 | 제조예 6 | 비교제조예 3 |
| 스티렌함량 (중량부, %) | 30 | 30 | 30 |
| 커플링제 | 화학식 2 (d=20) | 화학식 2 (d=7) | SnCl4 |
| 비닐 함량(몰, %) | 40 | 40 | 40 |
| 무늬점도(ML1+4,100℃) | 128 | 129 | 127 |
| 커플링전 중량평균분자량 (×104) | 18.7 | 19 | 19 |
| 분자량분포 | 2.8 | 2.6 | 2.4 |
| 커플링후 중량평균분자량 (×104) | 75 | 80 | 79 |
| 평가 시료 | G | H | I |
| 중량부 | |
| 고무 중합체 | 100 |
| 파라핀 오일 | 37 |
| 실리카 | 64 |
| 커플링제 | 4.6 |
| 아연 산화물 | 5 |
| 스테아린 산 | 2 |
| 산화방지제 | 1 |
| 황 | 1.5 |
| 가황 촉진제 | 2.9 |
| 타이어 트레드용 고무 | 실시예 5 | 실시예 6 | 비교예 3 |
| 디엔계 공중합체 | 제조예 5 | 제조예 6 | 비교제조예 3 |
| 배합전 무늬값 (ML1+4,100℃) | 128 | 129 | 127 |
| 배합후 무늬값 (ML1+4,100℃) | 109.2 | 110 | 91 |
| 롤 가공성 | 양호 | 양호 | 양호 |
| 인장강도 (kgf/cm2) | 163 | 157 | 145 |
| 300% 모듈러스 (kgf/cm2) | 111 | 109 | 95 |
| 신율(Elongation, %) | 411 | 409 | 400 |
| 습윤 미끌림 저항(tan δ, 0℃) | 0.584 | 0.545 | 0.511 |
| 구름 저항 (tan δ, 60℃) | 0.116 | 0.121 | 0.135 |
Claims (8)
- 비극성 용매의 존재 하에 유기리튬 개시제로 중합된 공역디엔 단독 중합체 또는 하나 이상의 공역디엔 화합물과 비닐 치환 방향족 화합물로 이루어진 공중합체의 활성화된 말단을 다음 화학식 1로 표시되는 폴리 실록산계의 화합물 중에서 선택된 적어도 하나의 화합물로 변성시킨 말단변성 디엔계 공중합체를 적어도 10중량% 이상 포함하는 원료고무 100중량부;무기충진재 10∼100중량부;유황 0.1∼5중량부; 및가황촉진제를 포함하는 타이어 트레드용 고무 조성물.화학식 1Y-{C(R3)(R4)}c-Si(R1)(R2)-{O-Si(R1)(R2)}d-{C(R3)(R4)}c-Y상기 식에서, Y는 (X)a(R)bSi 또는 (X)a(R)bC 또는 (X)e(R1)fBz-X이고; X는 불소, 염소, 브롬 또는 요오드와 같은 할로겐 원자이고; R은 메틸, 에틸, 프로필기 등을 포함한 탄소원자수 20이하의 저급 알킬기이며; R1, R3, R4는 서로 같거나 다른 것으로서 수소원자, 탄소원자수 20이하의 저급 알킬기, 할로겐으로 치환된 알킬기, 또는 할로겐으로 치환된 실란기로부터 선택된 것이며; R2는 X 또는 R1과 같거나,(X)g(R3)hC-{C(R3)(R4)}c-1이고; a는 1∼3이며, b는 0∼2이고, a + b = 3이며; c 는 1∼1000; d는 1∼50000이고; e와 f는 각각 0∼4이며, e + f = 4이고; g와 h는 각각 0∼3이며, g + h = 3이고; Bz-X는 벤질할로겐이다.
- (정정)제 1 항에 있어서, 유기리튬 개시제는 에틸 리튬, 프로필 리튬, n-부틸리튬, sec-부틸리튬, tert-부틸 리튬, 페닐 리튬 및 프로페닐 리튬으로 이루어진 군으로부터 선택된 1종 이상의 것임을 특징으로 하는타이어 트레드용 고무 조성물.
- (정정)제 1 항에 있어서, 상기 화학식 1로 표시되는 화합물은 상기 유기리튬 개시제 1몰에 대하여 0.1몰 이상 사용하는 것을 특징으로 하는타이어 트레드용 고무 조성물.
- (정정)제 1 항에 있어서, 공역디엔 단독중합체 또는 하나 이상의 공역디엔과 비닐치환 방향족 단량체로 이루어진 공중합체는 공역디엔 단량체 10∼100중량%와 비닐치환 방향족 단량체 0∼90중량%를 포함하는 것을 특징으로 하는타이어 트레드용 고무 조성물.
- (정정)제 1 항에 있어서, 공역디엔 화합물의 단독중합체 또는 공중합체의 분자량은 1,000∼1,200,000의 범위에 있는 것을 특징으로 하는타이어 트레드용 고무 조성물.
- (정정)제 1 항에 있어서, 공역디엔 화합물은 이소프렌 및 1,3-부타디엔 중에서 선택된 것이고, 비닐치환 방향족 화합물은 스티렌 및 알파메틸 스티렌 중에서 선택된 것임을 특징으로 하는타이어 트레드용 고무 조성물.
- (정정)제 1 항에 있어서, 상기 말단변성 디엔계 공중합체는 부타디엔 부분의 비닐 결합이 10∼70%이고, 분자량 분포가 1.1∼3이며, 무늬점도가 10∼200임을 특징으로 하는타이어 트레드용 고무 조성물.
- 제 1 항에 있어서, 무기충진재는 실리카 또는 카본 블랙인 것을 특징으로 하는 타이어 트레드용 고무 조성물.
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