JPS627935B2 - - Google Patents
Info
- Publication number
- JPS627935B2 JPS627935B2 JP15381579A JP15381579A JPS627935B2 JP S627935 B2 JPS627935 B2 JP S627935B2 JP 15381579 A JP15381579 A JP 15381579A JP 15381579 A JP15381579 A JP 15381579A JP S627935 B2 JPS627935 B2 JP S627935B2
- Authority
- JP
- Japan
- Prior art keywords
- latex
- weight
- rubber
- acrylonitrile
- copolymer
- 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
Links
- 229920000126 latex Polymers 0.000 claims description 52
- 229920001971 elastomer Polymers 0.000 claims description 51
- 239000005060 rubber Substances 0.000 claims description 51
- 239000004816 latex Substances 0.000 claims description 49
- 229920001577 copolymer Polymers 0.000 claims description 21
- 230000035699 permeability Effects 0.000 claims description 19
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 16
- 239000000178 monomer Substances 0.000 claims description 16
- 239000007787 solid Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 11
- 229920000642 polymer Polymers 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 10
- 150000001993 dienes Chemical class 0.000 claims description 6
- 229920003244 diene elastomer Polymers 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 29
- 238000006116 polymerization reaction Methods 0.000 description 22
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 12
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- 230000001112 coagulating effect Effects 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 230000009477 glass transition Effects 0.000 description 6
- 239000011591 potassium Substances 0.000 description 6
- 229910052700 potassium Inorganic materials 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 238000013329 compounding Methods 0.000 description 5
- 230000001066 destructive effect Effects 0.000 description 5
- YAJYJWXEWKRTPO-UHFFFAOYSA-N 2,3,3,4,4,5-hexamethylhexane-2-thiol Chemical compound CC(C)C(C)(C)C(C)(C)C(C)(C)S YAJYJWXEWKRTPO-UHFFFAOYSA-N 0.000 description 4
- GSFSVEDCYBDIGW-UHFFFAOYSA-N 2-(1,3-benzothiazol-2-yl)-6-chlorophenol Chemical compound OC1=C(Cl)C=CC=C1C1=NC2=CC=CC=C2S1 GSFSVEDCYBDIGW-UHFFFAOYSA-N 0.000 description 4
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- -1 pentadiene Chemical class 0.000 description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 description 3
- 230000003712 anti-aging effect Effects 0.000 description 3
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 description 3
- 229920002959 polymer blend Polymers 0.000 description 3
- XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical compound [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 description 3
- 159000000000 sodium salts Chemical class 0.000 description 3
- 239000008234 soft water Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- PMJHHCWVYXUKFD-SNAWJCMRSA-N (E)-1,3-pentadiene Chemical compound C\C=C\C=C PMJHHCWVYXUKFD-SNAWJCMRSA-N 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- SPTHWAJJMLCAQF-UHFFFAOYSA-M ctk4f8481 Chemical compound [O-]O.CC(C)C1=CC=CC=C1C(C)C SPTHWAJJMLCAQF-UHFFFAOYSA-M 0.000 description 2
- 238000007720 emulsion polymerization reaction Methods 0.000 description 2
- 239000011790 ferrous sulphate Substances 0.000 description 2
- 235000003891 ferrous sulphate Nutrition 0.000 description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 235000011164 potassium chloride Nutrition 0.000 description 2
- 229940096992 potassium oleate Drugs 0.000 description 2
- MLICVSDCCDDWMD-KVVVOXFISA-M potassium;(z)-octadec-9-enoate Chemical compound [K+].CCCCCCCC\C=C/CCCCCCCC([O-])=O MLICVSDCCDDWMD-KVVVOXFISA-M 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 229920006027 ternary co-polymer Polymers 0.000 description 2
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- KGIGUEBEKRSTEW-UHFFFAOYSA-N 2-vinylpyridine Chemical compound C=CC1=CC=CC=N1 KGIGUEBEKRSTEW-UHFFFAOYSA-N 0.000 description 1
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 description 1
- UVOQULYQRXQJGE-UHFFFAOYSA-J C(C)(=O)O.C(C)(=O)O.C(C)(=O)O.C(C)(=O)O.C(CN(CC(=O)[O-])CC(=O)[O-])N(CC(=O)[O-])CC(=O)[O-].[Na+].[Na+].[Na+].[Na+] Chemical compound C(C)(=O)O.C(C)(=O)O.C(C)(=O)O.C(C)(=O)O.C(CN(CC(=O)[O-])CC(=O)[O-])N(CC(=O)[O-])CC(=O)[O-].[Na+].[Na+].[Na+].[Na+] UVOQULYQRXQJGE-UHFFFAOYSA-J 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000007696 Kjeldahl method Methods 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 125000005250 alkyl acrylate group Chemical group 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- RWNQRLATPAGHIM-UHFFFAOYSA-N buta-1,3-diene;2-methylbuta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N.CC(=C)C=C RWNQRLATPAGHIM-UHFFFAOYSA-N 0.000 description 1
- FHTACFVZIAVFCY-UHFFFAOYSA-N buta-1,3-diene;2-methylprop-2-enoic acid;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N.CC(=C)C(O)=O FHTACFVZIAVFCY-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- MIMDHDXOBDPUQW-UHFFFAOYSA-N dioctyl decanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCCC(=O)OCCCCCCCC MIMDHDXOBDPUQW-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001493 electron microscopy Methods 0.000 description 1
- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000004688 heptahydrates Chemical class 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- QUPCNWFFTANZPX-UHFFFAOYSA-M paramenthane hydroperoxide Chemical compound [O-]O.CC(C)C1CCC(C)CC1 QUPCNWFFTANZPX-UHFFFAOYSA-M 0.000 description 1
- PMJHHCWVYXUKFD-UHFFFAOYSA-N piperylene Natural products CC=CC=C PMJHHCWVYXUKFD-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
- 229940048086 sodium pyrophosphate Drugs 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
- 229960002447 thiram Drugs 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 235000014692 zinc oxide Nutrition 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15381579A JPS5676438A (en) | 1979-11-28 | 1979-11-28 | Production of acrylonitrile-diene rubber composition having improved resistance to low temperature and to permeation of freon gas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15381579A JPS5676438A (en) | 1979-11-28 | 1979-11-28 | Production of acrylonitrile-diene rubber composition having improved resistance to low temperature and to permeation of freon gas |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5676438A JPS5676438A (en) | 1981-06-24 |
JPS627935B2 true JPS627935B2 (fr) | 1987-02-19 |
Family
ID=15570698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15381579A Granted JPS5676438A (en) | 1979-11-28 | 1979-11-28 | Production of acrylonitrile-diene rubber composition having improved resistance to low temperature and to permeation of freon gas |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5676438A (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0363364B2 (fr) * | 1985-09-02 | 1991-09-30 | Riken Keikinzoku Kogyo Kk | |
JPH0443169Y2 (fr) * | 1987-04-23 | 1992-10-13 | ||
JP2002012703A (ja) * | 2000-04-27 | 2002-01-15 | Jsr Corp | ゴム組成物 |
JP4852736B2 (ja) * | 2000-06-29 | 2012-01-11 | Jsr株式会社 | ゴム組成物 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58180538A (ja) * | 1982-04-16 | 1983-10-22 | Tokai Rubber Ind Ltd | 防振および防音性ゴム組成物 |
JPS5931376A (ja) * | 1982-08-13 | 1984-02-20 | デルタ工業株式会社 | ドアチエツカのスプリングラバ− |
JPS60223838A (ja) * | 1984-04-20 | 1985-11-08 | Nok Corp | 0リング成形用ゴム組成物 |
JPS62101435A (ja) * | 1985-10-30 | 1987-05-11 | 藤森工業株式会社 | 断熱板用複合包装材料 |
JPH0819268B2 (ja) * | 1987-03-31 | 1996-02-28 | 日本合成ゴム株式会社 | ラテツクス組成物 |
DE69835266T2 (de) | 1997-03-24 | 2007-07-26 | Toray Industries, Inc. | Beschichtungsvorrichtung, druckvorichtung, bilderzeugungsvorrichtung, drucksystem und druckverfahren |
JP6389055B2 (ja) | 2014-04-16 | 2018-09-12 | 株式会社ブリヂストン | ホース用ゴム組成物及び油圧ホース |
-
1979
- 1979-11-28 JP JP15381579A patent/JPS5676438A/ja active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0363364B2 (fr) * | 1985-09-02 | 1991-09-30 | Riken Keikinzoku Kogyo Kk | |
JPH0443169Y2 (fr) * | 1987-04-23 | 1992-10-13 | ||
JP2002012703A (ja) * | 2000-04-27 | 2002-01-15 | Jsr Corp | ゴム組成物 |
JP4852736B2 (ja) * | 2000-06-29 | 2012-01-11 | Jsr株式会社 | ゴム組成物 |
Also Published As
Publication number | Publication date |
---|---|
JPS5676438A (en) | 1981-06-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7217775B2 (en) | Emulsion particles as reinforcing fillers | |
JP3794810B2 (ja) | Sbrゴムゲルを含有するゴム混合物 | |
JPH10204225A (ja) | 変成されたゴムゲルを含有するゴム混合物 | |
JP2000017021A (ja) | 乳化重合製造のスチレン―ブタジエンゴム | |
JPWO2005082995A1 (ja) | ゴム組成物及びそれを用いた空気入りタイヤ | |
JP2008308615A (ja) | タイヤ用ゴム組成物 | |
US5626697A (en) | Tire with rubber sidewall | |
JPS627935B2 (fr) | ||
JP2008138086A (ja) | タイヤトレッド用ゴム組成物 | |
JP3457469B2 (ja) | ゴム組成物 | |
JPH01197541A (ja) | ゴム組成物 | |
US2657190A (en) | Blends of polybutadiene and butadiene-acrylonitrile copolymer | |
US6166140A (en) | Elastomer blend and use in tires | |
JP2682148B2 (ja) | ゴム組成物 | |
KR19990063433A (ko) | 타이어 트레드 합성물에 사용되는 고무 블렌드 | |
JP2001172433A (ja) | ゴム組成物および燃料系ホース | |
JPS58154742A (ja) | ジエン系ゴム組成物 | |
JP2001323071A (ja) | カーボンマスターバッチの製造方法 | |
JPH0365828B2 (fr) | ||
JP2022094898A (ja) | ゴム組成物の製造方法、その方法で製造されたゴム組成物及びそれを用いて製造されたタイヤ | |
WO2016013573A1 (fr) | Composition de caoutchouc ainsi que procédé de fabrication de celle-ci, composé, et procédé d'amélioration de rapport de rendement de silice dans cette composition de caoutchouc | |
JPH10226736A (ja) | ゴム組成物 | |
JPH07103270B2 (ja) | 耐摩耗性高ヒステリシスロスゴム組成物 | |
JPS6134741B2 (fr) | ||
JPH10237230A (ja) | ゴム組成物 |