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1. 发明授权

US6111021A Rubber composition and process for the production thereof 失效
公开(公告)号：US6111021A
公开(公告)日：2000-08-29
申请号：US983023
申请日：1998-01-02
申请人： Hidenari Nakahama , Masaaki Kawasaki , Yuji Ishii , Tetsuo Tojo , Taku Koda , Yoshio Maejima , Yuji Miura , Yasuhiro Hosomi
发明人： Hidenari Nakahama , Masaaki Kawasaki , Yuji Ishii , Tetsuo Tojo , Taku Koda , Yoshio Maejima , Yuji Miura , Yasuhiro Hosomi
IPC分类号： C08L23/02 , C08L23/04 , C08L23/08 , C08L23/10 , C08L23/16
CPC分类号： C08L23/02 , C08L23/16 , C08L2205/18 , C08L23/04 , C08L23/0815 , C08L23/10
摘要： A vulcanizable rubber composition comprising a blend which is prepared by micro-dispersing a polyolefin resin (B) in an ethylene-.alpha.-olefin-nonconjugated polyene copolymer rubber (A) comprising ethylene, a C.sub.3 -C.sub.20 .alpha.-olefin and a nonconjugated polyene in a molten state and in which the mean diameter of dispersed particles of the polyolefin resin (B) is 2 .mu.m or below and the (B) to (A) weight ratio ranges from 5/95 to 50/50. The micro-dispersion of a polyolefin resin (B) can easily be attained by kneading the components (A) and (B) together with compounding ingredients (such as reinforcement, filler, softener, vulcanization accelerator, vulcanizing agent and so on) in a rubber kneader, through the resin (B) is essentially difficult of micro-dispersion. Further, the composition enables the provision of rubber articles having a high and constant quality at a low cost, because the resin (B) can well be dispersed by conventional rubber kneaders in a short time without fail. The process for producing the above composition comprises introducing a rubber mixture (E) comprising 100 parts by weight of the copolymer rubber (B) and 3 to 10 parts by weight of an organic solvent (D) into a multi-stage vented extruder through a feed port, while introducing a polyolefin resin (B) thereinto in an inert gas atmosphere through another feed port, kneading the rubber mixture (E) and the polyolefin resin (B) with the removal of the solvent. This process can easily give nonblocking vulcanizable pellets of an ethylenic copolymer rubber composition comprising an ethylene-.alpha.-olefin-nonconjugated polyene copolymer rubber (A) and a polyolefin resin (B) wherein the resin (B) is micro-dispersed in a good state.

2. 发明授权

US06864315B1 Crosslinkable rubber compositions and use thereof 有权
标题翻译：可交联橡胶组合物及其用途
公开(公告)号：US06864315B1
公开(公告)日：2005-03-08
申请号：US09673608
申请日：2000-03-14
申请人： Takashi Hakuta , Masaaki Kawasaki , Yoshiharu Kikuchi , Hidenari Nakahama , Taku Koda , Hiroshi Kameda , Shuichi Nonaka , Mikio Hosoya , Yuji Ishii , Mitsunao Arino , Tsutomu Nakamura , Satao Hirabayashi , Takeo Yoshida
发明人： Takashi Hakuta , Masaaki Kawasaki , Yoshiharu Kikuchi , Hidenari Nakahama , Taku Koda , Hiroshi Kameda , Shuichi Nonaka , Mikio Hosoya , Yuji Ishii , Mitsunao Arino , Tsutomu Nakamura , Satao Hirabayashi , Takeo Yoshida
IPC分类号： C08K5/00 , C08L23/16 , C08L83/04 , C08L47/00
CPC分类号： C08K5/0025 , C08L23/16 , C08L83/04 , C08L2312/08 , C08L2314/02 , C08L83/00
摘要： The crosslinkable rubber composition of the invention is crosslinkable by hot air, and a hot-air crosslinked rubber sheet thereof has no scratch on the surface in a hardness test using a pencil of HB and has a compression set of not more than 70% after a heat treatment at 150° C. for 22 hours. The rubber composition comprises an ethylene/α-olefin/non-conjugated polyene random copolymer rubber comprising a specific vinyl end group-containing norbornene compound, a SiH group-containing compound having at least two SiH groups in one molecule, and if necessary, an addition reaction catalyst comprising a platinum group element and a reaction inhibitor. The automobile weatherstrip, hose, rubber vibration insulator, belt, sealing material, expanded product, covered electric wire, electric wire joint, electric insulating part and household rubber product according to the invention comprise the above-mentioned rubber composition. The rubber composition has a high crosslinking rate and excellent productivity to produce crosslinked rubber molded products, is capable of undergoing hot-air crosslinking such as HAV or UHF and is capable of providing crosslinked rubber molded products having excellent compression set resistance, strength properties, heat resistance, weathering resistance and abrasion resistance.
摘要翻译：本发明的交联性橡胶组合物可以通过热风进行交联，在使用HB的铅笔的硬度试验中，热风交联橡胶片在表面没有刮痕，并且在a后的压缩永久变形为70％以上在150℃下热处理22小时。该橡胶组合物包含一个乙烯/α-烯烃/非共轭多烯无规共聚物橡胶，其包含特定的含乙烯基端基的降冰片烯化合物，在一个分子中具有至少两个SiH基团的含SiH基化合物，如果需要，包含铂族元素和反应抑制剂的加成反应催化剂。根据本发明的汽车密封条，软管，橡胶振动绝缘子，带，密封材料，膨胀产品，包覆电线，电线接头，电绝缘部件和家用橡胶制品包括上述橡胶组合物。橡胶组合物具有高交联率和优异的生产交联橡胶成型体的生产率，能够进行热风交联如HAV或UHF，并且能够提供具有优异的耐压缩变形性，强度性能，热性能的交联橡胶模制产品耐电阻，耐候性和耐磨性。

3. 发明授权

US06569936B1 Rubber composition for a conveyor belt 有权
标题翻译：用于输送带的橡胶组合物
公开(公告)号：US06569936B1
公开(公告)日：2003-05-27
申请号：US09717275
申请日：2000-11-22
申请人： Masaaki Kawasaki , Takashi Hakuta , Hidenari Nakahama , Tetsuo Tojo
发明人： Masaaki Kawasaki , Takashi Hakuta , Hidenari Nakahama , Tetsuo Tojo
IPC分类号： C08K304
CPC分类号： C08K5/01 , C08K3/04 , C08K5/14 , C08L23/16 , C08L91/00 , C08L2666/02
摘要： According to the present invention, there is provided a rubber composition for a conveyor belt comprising (A) 100 parts by weight of an ethylene/&agr;-olefin containing 3 to 20 carbon atoms/non-conjugated polyene copolymer rubber containing a diene unit derived from special non-conjugated dienes, (B) 0.5 to 15 parts by weight of an organic peroxide, (C) 30 to 80 parts by weight of a carbon black and (D) 5 to 25 parts by weight of a softening agent. This rubber composition provides excellent mechanical strength, heat resistance (including heat aging resistance), abrasion resistance and roll processability. It is especially preferred to convey a sintered product, a coke, a cement, clinker and quicklime.
摘要翻译：根据本发明，提供了一种用于输送带的橡胶组合物，其包含（A）100重量份含有3-20个碳原子的乙烯/α-烯烃/非共轭多烯共聚物橡胶，其含有衍生自特殊的非共轭二烯，（B）0.5〜15重量份的有机过氧化物，（C）30〜80重量份的炭黑和（D）5〜25重量份的软化剂。组合物提供优异的机械强度，耐热性（包括耐热老化性），耐磨性和辊加工性。特别优选输送烧结产品，焦炭，水泥，熟料和生石灰。

4. 发明授权

US5869563A Ethylene/.alpha.-olefin/nonconjugated polyene copolymer rubber composition 失效
标题翻译：乙烯/α-烯烃/非共轭多烯共聚物橡胶组合物
公开(公告)号：US5869563A
公开(公告)日：1999-02-09
申请号：US661989
申请日：1996-06-12
申请人： Masaaki Kawasaki , Hidenari Nakahama , Tetsuo Tojo , Toshiyuki Tsutsui , Kyoko Kobayashi , Toshihiro Sagane
发明人： Masaaki Kawasaki , Hidenari Nakahama , Tetsuo Tojo , Toshiyuki Tsutsui , Kyoko Kobayashi , Toshihiro Sagane
IPC分类号： C08L23/02 , C08L23/16 , C08L23/26
CPC分类号： C08L23/02 , C08L23/16 , C08L2207/04
摘要： The ethylene/.alpha.-olefin/nonconjugated polyene copolymer rubber composition of the present invention comprises in specified proportions a crystalline polyolefin resin (A) and an ethylene/.alpha.-olefin/nonconjugated polyene copolymer rubber (B) composed of ethylene, an .alpha.-olefin having 3 to 20 carbon atoms and a specific branched chain polyene compound. The molar ratio of ethylene units to .alpha.-olefin units, iodine value and intrinsic viscosity �.eta.! of the ethylene/.alpha.-olefin/nonconjugated polyene copolymer rubber (B) are within respective specified ranges. This rubber composition is excellent in low temperature properties. When the above olefinic thermoplastic elastomer composition is partially or entirely crosslinked, a molding can be provided which is superior to the conventional vulcanized rubbers in low temperature properties, tensile strength, elongation at break and rubber properties.
摘要翻译：本发明的乙烯/α-烯烃/非共轭多烯共聚物橡胶组合物以特定比例包含结晶聚烯烃树脂（A）和乙烯/α-烯烃/非共轭多烯共聚物橡胶（B），乙烯，α-烯烃具有3至20个碳原子和特定的支链多烯化合物。乙烯单元与α-烯烃单元的摩尔比，乙烯/α-烯烃/非共轭多烯共聚物橡胶（B）的碘值和特性粘度η在各自的特定范围内。该橡胶组合物的低温性能优异。当上述烯烃类热塑性弹性体组合物部分或全部交联时，可以提供在低温性能，拉伸强度，断裂伸长率和橡胶性能方面优于常规硫化橡胶的成型。

5. 发明授权

US5807948A Vulcanizable rubber composition containing ehtylene-.alpha.-olefin-nonconjugated polyene random copolymer 失效
标题翻译：含有乙烯-α-烯烃 - 非共轭多烯无规共聚物的可硫化橡胶组合物
公开(公告)号：US5807948A
公开(公告)日：1998-09-15
申请号：US783238
申请日：1997-01-14
申请人： Toshihiro Sagane , Toshiyuki Tsutsui , Masaaki Kawasaki , Keiji Okada , Hidenari Nakahama , Tetsuo Tojo
发明人： Toshihiro Sagane , Toshiyuki Tsutsui , Masaaki Kawasaki , Keiji Okada , Hidenari Nakahama , Tetsuo Tojo
IPC分类号： C08F4/64 , C08F4/659 , C08F4/6592 , C08F210/18 , C08L23/16 , C08F236/20
CPC分类号： C08F210/18 , C08L23/16 , C08F4/65912 , C08F4/65927 , C08L2312/00 , Y10S526/943
摘要： Disclosed is a process for preparing an ethylene-.alpha.-olefin-nonconjugated polyene random copolymer comprising random copolymerizing (a) ethylene, (b) an .alpha.-olefin of 3 or more carbon atoms and (c) a nonconjugated polyene in the presence of a metallocene catalyst containing a specific metallocene compound. The ethylene-.alpha.-olefin-nonconjugated polyene random copolymer prepared by the process has such properties that (i) the copolymer contains units derived from ethylene (a) and units derived from the .alpha.-olefin of 3 or more carbon atoms (b) in a molar ratio of 40/60 to 95/5 �(a)/(b)!, (ii) the iodine value is 1 to 50, (iii) the intrinsic viscosity (.eta.) is more than 0.1 dl/g and less than 8.0 10 dl/g, (iv) the intensity ratio D of T.alpha..beta. to T.alpha..alpha. in the .sup.13 C-NMR spectrum, T.alpha..beta./T.alpha..alpha., is not more than 0.5, (v) the B value is 1.00 to 1.50, (vi) the glass transition temperature Tg is not higher than -50.degree. C., and (vii) the ratio g.eta.* of the intrinsic viscosity (.eta.) of this copolymer defined above to the intrinsic viscosity (.eta.).sub.blank of a straight-chain ethylene-propylene copolymer having the same weight-average molecular weight as this random copolymer and having an ethylene content of 70% by mol, (.eta.)/(.eta.).sub.blank, is more than 0.9. Also disclosed is a vulcanizable rubber composition containing the random copolymer. The ethylene-.alpha.-olefin-nonconjugated polyene random copolymer and the rubber composition are excellent in mechanical strength, weathering resistance, ozone resistance, processability, low-temperature flexibility and heat resistance.
摘要翻译：公开了一种制备乙烯-α-烯烃 - 非共轭多烯无规共聚物的方法，包括（a）乙烯，（b）3个或更多个碳原子的α-烯烃和（c）非共轭多烯在含有特定茂金属化合物的茂金属催化剂。通过该方法制备的乙烯-α-烯烃 - 非共轭多烯无规共聚物具有以下特性：（i）共聚物含有衍生自乙烯（a）的单元和衍生自3个或更多个碳原子的（b）的α-烯烃的单元摩尔比为40/60〜95/5 [（a）/（b）]，（ii）碘值为1〜50，（iii）特性粘度（η）大于0.1dl / g以下（iv）13 C-NMR光谱中的Tαβ与Tαα的强度比D（Tαβ/Tαα）不大于0.5，（v）B值为 1.00至1.50，（vi）玻璃化转变温度Tg不高于-50℃，（vii）上述定义的共聚物的特性粘度（η）与特性粘度（η）的比值g eta * 空白的具有与该无规共聚物相同的重均分子量且乙烯含量为70摩尔％（eta）/（η）空白的直链乙烯 - 丙烯共聚物大于0.9。还公开了含有无规共聚物的可硫化橡胶组合物。乙烯-α-烯烃 - 非共轭多烯无规共聚物和橡胶组合物的机械强度，耐候性，耐臭氧性，加工性，低温柔韧性和耐热性都优异。

6. 发明授权

US5912303A Ethylene/.alpha.-olefin/nonconjugated polyene terpolymer rubber composition and vulcanized rubber obtained therefrom 失效
标题翻译：乙烯/α-烯烃/非共轭多烯三元共聚物橡胶组合物和由其获得的硫化橡胶
公开(公告)号：US5912303A
公开(公告)日：1999-06-15
申请号：US652901
申请日：1996-05-23
申请人： Hidenari Nakahama , Masaaki Kawasaki , Tetsuo Tojo , Totshiyuki Tsutsui , Toshihiro Sagane
发明人： Hidenari Nakahama , Masaaki Kawasaki , Tetsuo Tojo , Totshiyuki Tsutsui , Toshihiro Sagane
IPC分类号： C08L9/02 , C08L23/16 , C08L9/00 , C08L47/00
CPC分类号： C08L9/02 , C08L23/16 , C08L23/083 , C08L2312/00 , C08L7/00
摘要： A terpolymer rubber prepared from ethylene, .alpha.-olefin having 3 to 20 carbon atoms and branched chain polyene of the formula ##STR1## wherein R.sup.1 represents C.sub.1 -C.sub.5 alkyl, and R.sup.2 and R.sup.3 represent hydrogen atom or C.sub.1 -C.sub.5 alkyl, such as, for example, 6,7-dimethyl-4-ethylidene-1,6-octadiene, 6,7-dimethyl-4-ethylidene-1,6-nonadiene, and 9-methyl-4-ethylidene-1,8-decadiene; when added to a rubber (diene rubber, nitrile rubber or random copolymer rubber from ethylene, C.sub.3 -C.sub.20 .alpha.-olefin, and optionally a nonconjugated diene) provides curable rubber compositions having rapid vulcanization rates, for example, as lows as about 7 to 10 seconds. The diene rubber compositions also have excellent resistances to weather,ozone and heat aging while maintaining excellent mechanical strength characteristics. The nitrile rubber compositions also have excellent oil resistance.
摘要翻译：由乙烯，具有3-20个碳原子的α-烯烃和下式的支链多烯制备的三元共聚物橡胶，其中R1代表C1-C5烷基，R2和R3代表氢原子或C1-C5烷基，例如， 6,7-二甲基-4-亚乙基-1,6-辛二烯，6,7-二甲基-4-亚乙基-1,6-辛二烯和9-甲基-4-亚乙基-1,8-癸二烯; 当加入到橡胶（二烯橡胶，丁腈橡胶或乙烯的无规共聚物橡胶，C 3 -C 20α-烯烃和任选的非共轭二烯）时，提供具有快速硫化速率的可固化橡胶组合物，例如低至约7至10 秒。二烯橡胶组合物还具有优异的耐候性，耐臭氧和热老化，同时保持优异的机械强度特性。丁腈橡胶组合物也具有优异的耐油性。

7. 发明授权

US5756575A Ethylene/.alpha.-olefin/nonconjugated polyene copolymer rubber composition 失效
公开(公告)号：US5756575A
公开(公告)日：1998-05-26
申请号：US661989
申请日：1996-06-12
申请人： Masaaki Kawasaki , Hidenari Nakahama , Tetsuo Tojo , Toshiyuki Tsutsui , Kyoko Kobayashi , Toshihiro Sagane
发明人： Masaaki Kawasaki , Hidenari Nakahama , Tetsuo Tojo , Toshiyuki Tsutsui , Kyoko Kobayashi , Toshihiro Sagane
IPC分类号： C08L23/02 , C08L23/16 , C08L23/26
CPC分类号： C08L23/02 , C08L23/16 , C08L2207/04
摘要： The ethylene/.alpha.-olefin/nonconjugated polyene copolymer rubber composition of the present invention comprises in specified proportions a crystalline polyolefin resin (A) and an ethylene/.alpha.-olefin/nonconjugated polyene copolymer rubber (B) composed of ethylene, an .alpha.-olefin having 3 to 20 carbon atoms and a specific branched chain polyene compound. The molar ratio of ethylene units to .alpha.-olefin units, iodine value and intrinsic viscosity �.eta.! of the ethylene/.alpha.-olefin/nonconjugated polyene copolymer rubber (B) are within respective specified ranges. This rubber composition is excellent in low temperature properties. When the above olefinic thermoplastic elastomer composition is partially or entirely crosslinked, a molding can be provided which is superior to the conventional vulcanized rubbers in low temperature properties, tensile strength, elongation at break and rubber properties.

8. 发明授权

US5696214A Process for preparing ethylene-.alpha.-olefin-nonconjugated polyene random copolymer 失效
标题翻译：制备乙烯-α-烯烃 - 非共轭多烯无规共聚物的方法
公开(公告)号：US5696214A
公开(公告)日：1997-12-09
申请号：US575678
申请日：1995-12-19
申请人： Toshihiro Sagane , Toshiyuki Tsutsui , Masaaki Kawasaki , Keiji Okada , Hidenari Nakahama , Tetsuo Tojo
发明人： Toshihiro Sagane , Toshiyuki Tsutsui , Masaaki Kawasaki , Keiji Okada , Hidenari Nakahama , Tetsuo Tojo
IPC分类号： C08F4/64 , C08F4/659 , C08F4/6592 , C08F210/18 , C08L23/16 , C08F236/20
CPC分类号： C08F210/18 , C08L23/16 , C08F4/65912 , C08F4/65927 , C08L2312/00 , Y10S526/943
摘要： Disclosed is a process for preparing an ethylene-.alpha.-olefin-nonconjugated polyene random copolymer comprising random copolymerizing (a) ethylene, (b) an .alpha.-olefin of 3 or more carbon atoms and (c) a nonconjugated polyene in the presence of a metallocene catalyst containing a specific metallocene compound. The ethylene-.alpha.-olefin-nonconjugated polyene random copolymer prepared by the process has such properties that (i) the copolymer contains units derived from ethylene (a) and units derived from the .alpha.-olefin of 3 or more carbon atoms (b) in a molar ratio of 40/60 to 95/5 �(a)/(b)!, (ii) the iodine value is 1 to 50, (iii) the intrinsic viscosity (.eta.) is more than 0.1 dl/g and less than 8.0 10 dl/g, (iv) the intensity ratio D of T.alpha..beta. to T.alpha..alpha. in the .sup.13 C-NMR spectrum, T.alpha..beta./T.alpha..alpha., is not more than 0.5, (v) the B value is 1.00 to 1.50, (vi) the glass transition temperature Tg is not higher than -50.degree. C., and (vii) the ratio g.eta.* of the intrinsic viscosity (.eta.) of this copolymer defined above to the intrinsic viscosity (.eta.).sub.blank of a straight-chain ethylene-propylene copolymer having the same weight-average molecular weight as this random copolymer and having an ethylene content of 70% by mol, (.eta.)/(.eta.).sub.blank, is more than 0.9. Also disclosed is a vulcanizable rubber composition containing the random copolymer. The ethylene-.alpha.-olefin-nonconjugated polyene random copolymer and the rubber composition are excellent in mechanical strength, weathering resistance, ozone resistance, processability, low-temperature flexibility and heat resistance.
摘要翻译：公开了一种制备乙烯-α-烯烃 - 非共轭多烯无规共聚物的方法，包括（a）乙烯，（b）3个或更多个碳原子的α-烯烃和（c）非共轭多烯在含有特定茂金属化合物的茂金属催化剂。通过该方法制备的乙烯-α-烯烃 - 非共轭多烯无规共聚物具有以下特性：（i）共聚物含有衍生自乙烯（a）的单元和衍生自3个或更多个碳原子的（b）的α-烯烃的单元摩尔比为40/60〜95/5 [（a）/（b）]，（ii）碘值为1〜50，（iii）特性粘度（η）大于0.1dl / g以下（iv）13 C-NMR光谱中的Tαβ与Tαα的强度比D（Tαβ/Tαα）不大于0.5，（v）B值为 1.00至1.50，（vi）玻璃化转变温度Tg不高于-50℃，（vii）上述定义的共聚物的特性粘度（η）与特性粘度（η）的比值g eta * 空白的具有与该无规共聚物相同的重均分子量且乙烯含量为70摩尔％（eta）/（η）空白的直链乙烯 - 丙烯共聚物大于0.9。还公开了含有无规共聚物的可硫化橡胶组合物。乙烯-α-烯烃 - 非共轭多烯无规共聚物和橡胶组合物的机械强度，耐候性，耐臭氧性，加工性，低温柔韧性和耐热性都优异。

9. 发明授权

US06599984B1 Rubber modified with ethylene/&agr;-olefin(/diene) rubber(s) 有权
标题翻译：用乙烯/α-烯烃（/二烯）橡胶改性的橡胶
公开(公告)号：US06599984B1
公开(公告)日：2003-07-29
申请号：US09556936
申请日：2000-04-21
申请人： Masaaki Kawasaki , Taku Koda , Takashi Hakuta , Tetsuo Tojo
发明人： Masaaki Kawasaki , Taku Koda , Takashi Hakuta , Tetsuo Tojo
IPC分类号： C08L2308
CPC分类号： C08L23/16 , C08L2205/02 , C08L2666/04
摘要： A blend of a rubber and a rubber modifier, the rubber modifier comprising an ethylene/&agr;-olefin copolymer rubber (A) composed of one or more copolymers selected from the group consisting of a copolymer of ethylene and an &agr;-olefin having 3-20 carbon atoms and a copolymer of ethylene, an &agr;-olefin having 3-20 carbon atoms and a non-conjugated polyene, the copolymer rubber (A) having the parameters: an ethylene/&agr;-olefin mole ratio in the range of 51/49 to 87/13, an intrinsic viscosity [&eegr;] determined in decahydronaphthalene at 135° C. in the range of 0.8 to 2.5 dl/g and an iodine value in the range of 0 to 40.
摘要翻译：橡胶和橡胶改性剂的共混物，橡胶改性剂包括由一种或多种共聚物组成的乙烯/α-烯烃共聚物橡胶（A），所述共聚物选自乙烯和具有3-20的α-烯烃的共聚物碳原子和乙烯，具有3-20个碳原子的α-烯烃和非共轭多烯的共聚物，共聚物橡胶（A）具有参数：乙烯/α-烯烃摩尔比在51/49范围内至87/13，在十氢萘中在135℃下测定的特性粘度在0.8至2.5dl / g的范围内，碘值在0至40的范围内。

10. 发明授权

US5962543A Foam processable rubber compositions and vulcanized rubber foam molded products of the same 失效
标题翻译：泡沫加工橡胶组合物和硫化橡胶发泡成型制品相同
公开(公告)号：US5962543A
公开(公告)日：1999-10-05
申请号：US971107
申请日：1997-11-14
申请人： Masaaki Kawasaki , Shuichi Nonaka , Masao Kunizane , Taku Koda , Tetsuo Tojo
发明人： Masaaki Kawasaki , Shuichi Nonaka , Masao Kunizane , Taku Koda , Tetsuo Tojo
IPC分类号： C08L23/16 , C08J9/00
CPC分类号： C08L23/16 , C08L2203/14 , C08L2312/00
摘要： Disclosed is a foam processable rubber composition which comprises an ethylene/.alpha.-olefin of 3 to 20 carbon atoms/non-conjugated polyene copolymer rubber (A), a crystalline polyolefin resin (B) having a melting point of 100 to 150.degree. C. and a foaming agent (C), in specific proportions. The copolymer rubber (A) has an ethylene/.alpha.-olefin molar ratio of 60/40 to 80/20, an intrinsic viscosity (.eta.), as measured in decalin at 135.degree. C., of 0.7 to 2 dl/g, and an iodine value of 10 to 50. A vulcanized rubber foam-molded product can be obtained by vulcanizing and foaming the rubber composition. The rubber composition can provide vulcanized rubber foam-molded products having excellent vulcanization properties such as weathering resistance, heat resistance, ozone resistance and tear strength. Besides, the rubber composition exhibits excellent precision moldability and productivity of vulcanized rubber foam-molded products in transfer molding, injection molding and cast molding.
摘要翻译：公开了一种可发泡加工的橡胶组合物，其包含3至20个碳原子的乙烯/α-烯烃/非共轭多烯共聚物橡胶（A），熔点为100-150℃的结晶聚烯烃树脂（B）和发泡剂（C）。共聚物橡胶（A）的乙烯/α-烯烃摩尔比为60/40至80/20，在135℃萘烷中测定的特性粘度（η）为0.7-2dl / g，和碘值为10〜50。通过硫化和发泡橡胶组合物可以获得硫化橡胶发泡成型产品。橡胶组合物可以提供具有优异的硫化性能如耐候性，耐热性，耐臭氧性和撕裂强度的硫化橡胶发泡成型产品。此外，橡胶组合物在传递成型，注射成型和铸造成型中表现出优异的成型性和硫化橡胶发泡成型体的生产率。

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