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11. 发明申请

US20090239014A1 Rubber composition, crosslinked product and foam thereof, molded product therefrom, and use thereof 有权
标题翻译：橡胶组合物，交联产物和泡沫，其成型产品及其用途
公开(公告)号：US20090239014A1
公开(公告)日：2009-09-24
申请号：US12314155
申请日：2008-12-04
申请人： Yuji Noguchi , Takashi Hakuta , Hiroki Ebata , Kotaro Ichino , Shuichi Nonaka , Satoshi Hase , Kazuyoshi Kaneko , Akinori Takehara
发明人： Yuji Noguchi , Takashi Hakuta , Hiroki Ebata , Kotaro Ichino , Shuichi Nonaka , Satoshi Hase , Kazuyoshi Kaneko , Akinori Takehara
IPC分类号： C08L47/00 , C08L9/00 , C08K3/04 , B32B1/08
CPC分类号： C08L23/02 , C08F4/65908 , C08F4/65912 , C08F10/00 , C08F210/16 , C08F210/18 , C08J9/0061 , C08J9/0066 , C08J9/06 , C08J2201/024 , C08J2323/16 , C08J2423/00 , C08K3/04 , C08K3/06 , C08K3/22 , C08K3/26 , C08K3/346 , C08K5/0025 , C08K5/09 , C08K5/17 , C08L23/04 , C08L23/0815 , C08L23/10 , C08L23/16 , C08L91/00 , C08L2205/025 , C08L2312/00 , C08L2666/02 , C08L2666/06 , C08L2666/08 , C09K3/10 , C09K2200/0617 , C09K2200/062 , C09K2200/0642 , Y10T428/1386 , C08F4/6592 , C08F236/20 , C08F2500/17 , C08F210/06
摘要： The present invention provides a molded product exhibiting excellent various properties by improving compatibility of an ethylene/α-olefin/non-conjugated polyene copolymer with a polyolefin resin and a rubber composition for forming the molded product. The present invention further provides a molded product which comprises a rubber composition, is inhibited from fogging and tackiness and is excellent in mechanical strength and heat aging resistance. The rubber composition of the invention comprises an ethylene/α-olefin/non-conjugated polyene copolymer (A), and a polyolefin resin (B) having Mn of not less than 10,000 and/or an ethylene/α-olefin copolymer (C) having Mn of 2500 to 5000, and satisfies the following requirements: (1) a maximum value and a minimum value of an ethylene distribution parameter P of the component (A) have a relationship of Pmax/Pmin≦1.4, and (2) the B value of the component (C) ([EX]/(2[E]×[X])) ([E] and [X] are molar fractions of ethylene and the α-olefin of 3 to 20 carbon atoms, respectively, and [EX] is a fraction of dyad sequence of ethylene/α-olefin of 3 to 20 carbon atoms) is not more than 1.05.
摘要翻译：本发明提供通过改善乙烯/α-烯烃/非共轭多烯共聚物与聚烯烃树脂和用于形成模塑产品的橡胶组合物的相容性而显示出优异的各种性能的模制产品。本发明还提供一种包含橡胶组合物的模塑制品，其防止起雾和粘合，并且机械强度和耐热老化性优异。本发明的橡胶组合物包含乙烯/α-烯烃/非共轭多烯共聚物（A）和Mn不低于10,000的聚烯烃树脂（B）和/或乙烯/α-烯烃共聚物（C） Mn为2500〜5000，满足以下要求：（1）成分（A）的乙烯分布参数P的最大值和最小值具有Pmax / Pmin <= 1.4的关系，（2）组分（C）（[EX] /（2 [E] x [X]））（[E]和[X]）的B值是乙烯和3-20个碳原子的α-烯烃的摩尔分数，分别为[EX]为3-20个碳原子的乙烯/α-烯烃的二元序列的分数）不大于1.05。

12. 发明申请

US20090234073A1 Alpha-Olefin/non-conjugated cyclic polyene copolymers, production processes thereof, and crosslinkable compositions including the copolymer 审中-公开
标题翻译： α-烯烃/非共轭环状多烯共聚物，其制备方法和包括该共聚物的交联组合物
公开(公告)号：US20090234073A1
公开(公告)日：2009-09-17
申请号：US11920158
申请日：2006-05-10
申请人： Shigekazu Matsui , Sadahiko Matsuura , Haruyuki Makio , Seiichi Ishii , Hiroshi Terao , Hidetatsu Murakami , Takashi Hakuta , Terunori Fujita
发明人： Shigekazu Matsui , Sadahiko Matsuura , Haruyuki Makio , Seiichi Ishii , Hiroshi Terao , Hidetatsu Murakami , Takashi Hakuta , Terunori Fujita
IPC分类号： C08F8/00 , C08F212/06 , C08F4/42 , C08F2/00
CPC分类号： C08F210/00 , C08F10/00 , C08F210/02 , C08F210/16 , C08K5/54 , C08L23/0823 , C09K3/10 , C09K2200/0617 , C08L23/08 , C08F232/00 , C08F2500/03 , C08F2500/25 , C08F2500/20 , C08F210/06 , C08F4/64048
摘要： An α-olefin/non-conjugated cyclic polyene copolymer (A) includes structural units (I) derived from an α-olefin and structural units (H) derived from a vinyl group-containing cyclic olefin. The copolymer has a molecular weight distribution (Mw/Mn) of not more than 2.7 and is amorphous or low crystalline with a crystalline heat of fusion (ΔH) of less than 90 kJ/kg. The copolymer is efficiently produced using a specific transition metal catalyst that has a ligand with a phenoxyimine skeleton. The copolymer of the invention has a narrower molecular weight distribution and a higher content of vinyl groups as compared with existing copolymers. The copolymer can then give crosslinked products having excellent tensile properties. The copolymer is also used as a plasticizer for polymers such as rubbers, and provides excellent processability and superior mechanical strength and rubber elasticity of crosslinked products. By converting the vinyl groups in the copolymer to polar groups, various functional polyolefin materials are obtained.
摘要翻译： α-烯烃/非共轭环状多烯共聚物（A）包括衍生自α-烯烃的结构单元（I）和衍生自含乙烯基的环状烯烃的结构单元（H）。共聚物的分子量分布（Mw / Mn）不超过2.7，是晶体结晶热（DeltaH）小于90kJ / kg的无定形或低结晶。使用具有苯氧基亚胺骨架的配体的特定的过渡金属催化剂有效地制备共聚物。与现有的共聚物相比，本发明的共聚物具有更窄的分子量分布和更高的乙烯基含量。然后共聚物可以得到具有优异拉伸性能的交联产物。该共聚物也可用作聚合物如橡胶的增塑剂，并提供优异的加工性能和优异的机械强度和交联产品的橡胶弹性。通过将共聚物中的乙烯基转化为极性基团，得到各种功能聚烯烃材料。

13. 发明申请

US20090126234A1 Foams, foaming compositions and applications thereof 有权
标题翻译：泡沫，发泡组合物及其应用
公开(公告)号：US20090126234A1
公开(公告)日：2009-05-21
申请号：US12227293
申请日：2007-05-10
申请人： Takayuki Kajihara , Kiminori Noda , Masayoshi Yamaguchi , Takashi Hakuta
发明人： Takayuki Kajihara , Kiminori Noda , Masayoshi Yamaguchi , Takashi Hakuta
IPC分类号： A43B13/12 , C08F110/02 , C08L23/06 , A43B13/38 , A43B13/00 , B32B27/08 , B32B27/32
CPC分类号： C08J9/38 , A43B13/04 , A43B17/14 , B32B9/025 , B32B9/046 , B32B25/045 , B32B27/065 , B32B27/40 , B32B2437/02 , C08J9/0061 , C08J2201/024 , C08J2323/08 , C08J2423/00 , C08L23/0815 , C08L23/0846 , C08L23/16 , Y10T428/249988 , Y10T428/249991 , C08L23/00
摘要： [Objects] It is an object to provide a foam having a low specific gravity and a small compression set, more preferably a foam having a low specific gravity, a small compression set and uniform quality, a foaming composition, and applications of the foam.[Means for Solution] The foam is obtained by foaming an olefin polymer, wherein the foam has a specific gravity (d) in the range of 0.03 to 0.30, and a compression set (CS, %) and the specific gravity (d) satisfy the formula of CS≦−279×(d)+95. The foam is preferably obtained from a foaming composition that includes an ethylene polymer (A) including a specific ethylene/α-olefin copolymer (A1) and an ethylene/polar monomer copolymer (A2) in a specific mass ratio, and a specific ethylene/C3-20 α-olefin/non-conjugated polyene copolymer (B).
摘要翻译：本发明的目的是提供具有低比重和小压缩变形的泡沫，更优选具有低比重，小压缩变形和均匀质量的泡沫，发泡组合物和泡沫的应用。 [解决方案]泡沫是通过使烯烃聚合物发泡得到的，其中泡沫体的比重（d）在0.03至0.30的范围内，压缩永久变形（CS，％）和比重（d）满足 CS <= - 279x（d）+95的公式。泡沫优选由包含特定乙烯/α-烯烃共聚物（A1）的乙烯聚合物（A）和特定质量比的乙烯/极性单体共聚物（A2）的发泡组合物获得，特定的乙烯/ C3-20α-烯烃/非共轭多烯共聚物（B）。

14. 发明申请

US20090118404A1 Rubber Composition and Used Thereof 有权
标题翻译：橡胶组合物及其用途
公开(公告)号：US20090118404A1
公开(公告)日：2009-05-07
申请号：US11922705
申请日：2006-06-28
申请人： Takashi Hakuta , Kuniyoshi Kawasaki
发明人： Takashi Hakuta , Kuniyoshi Kawasaki
IPC分类号： C08K5/5419 , C08K5/54 , H01M2/08 , F16J15/10
CPC分类号： C08K5/5419 , C08L23/16 , H01M8/0284 , C08L83/00
摘要： It is an object of the present invention to provide a rubber composition which has been improved in mechanical properties with maintaining excellent various properties and is favorably used for a fuel cell sealing member, a hard disc drive top cover gasket member and an electric wire connector sealing member. It is another object of the present invention to provide main bodies mounted with the above respective members obtained by the use of the rubber composition. The rubber composition of the invention comprises a specific ethylene/α-olefin/non-conjugated polyene copolymer in which the non-conjugated polyene is a norbornene-based compound, a specific SiH group-containing compound, and if necessary, an organopolysiloxane. Such a rubber composition of the invention is excellent in mechanical properties and can be particularly favorably used for a fuel cell sealing member, a hard disc drive top cover gasket, an electric wire connector sealing member, etc.
摘要翻译：本发明的目的是提供一种在保持优异的各种性能的情况下提高机械性能的橡胶组合物，并且有利地用于燃料电池密封构件，硬盘驱动器顶盖衬垫构件和电线连接器密封会员。本发明的另一个目的是提供安装有通过使用橡胶组合物获得的上述各个部件的主体。本发明的橡胶组合物包含特定的乙烯/α-烯烃/非共轭多烯共聚物，其中非共轭多烯是降冰片烯类化合物，特定的含SiH基的化合物，如果需要的话，是有机聚硅氧烷。本发明的这种橡胶组合物的机械性能优异，特别优选用于燃料电池密封件，硬盘驱动器顶盖衬垫，电线连接器密封件等。

15. 发明申请

US20070015893A1 Curable composition and its use 审中-公开
公开(公告)号：US20070015893A1
公开(公告)日：2007-01-18
申请号：US11515318
申请日：2006-09-05
申请人： Takashi Hakuta , Masaaki Kawasaki , Yoshiharu Kikuchi , Mitsunao Arino , Mitsuko Nagai , Hiroaki Sakaguchi , Masaki Sugawara , Masao Kishi , Kaoru Ueno , Takashi Abe , Michio Sekine
发明人： Takashi Hakuta , Masaaki Kawasaki , Yoshiharu Kikuchi , Mitsunao Arino , Mitsuko Nagai , Hiroaki Sakaguchi , Masaki Sugawara , Masao Kishi , Kaoru Ueno , Takashi Abe , Michio Sekine
IPC分类号： C08G77/60
CPC分类号： C09D123/16 , B32B17/1055 , C08F210/18 , C08F230/08 , C08L23/16 , C08L83/00 , C08L83/04 , C08L2312/08 , C09J123/16 , C08F210/06 , C08F2500/25 , C08F2500/21
摘要： The curable composition of the present invention contains (A1) a silyl-containing ethylene/α-olefin/non-conjugated polyene random copolymer rubber which has a structural unit derived from a norbornene compound as the non-conjugated polyene with at least one specific vinyl group at the terminal and contains a specific hydrolyzable silyl group, and (B) a compound, other than the rubber (A1), having a hydroxyl group and/or a hydrolyzable group, e.g., (B1) a compound having a silanol group and/or a compound which can react with moisture to form a compound having a silanol group in the molecule. This compound improves elongation of the cured product and residual surface tackiness, and, at the same time, is high in curing speed and capable of giving the cured product of high resistance to weather. It is suitable for, e.g., adhesives, tackifiers, paints, sealants, waterproof materials, spray materials, shaping materials and casting rubber materials.

16. 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。

17. 发明授权

US6140441A Ethylenic random copolymer, process for preparing the same, and rubber composition 失效
标题翻译：乙烯无规共聚物，其制备方法和橡胶组合物
公开(公告)号：US6140441A
公开(公告)日：2000-10-31
申请号：US983636
申请日：1998-03-30
申请人： Takashi Hakuta , Mikio Hosoya , Tetsuo Tojo , Masaaki Kawasaki
发明人： Takashi Hakuta , Mikio Hosoya , Tetsuo Tojo , Masaaki Kawasaki
IPC分类号： C08F4/68 , C08F210/18
CPC分类号： C08F210/18
摘要： A process for preparing an ethylene/.alpha.-olefin/norbornene nonconjugated polyene random copolymer, comprising preparing an ethylene random copolymer simultaneously meeting the following requirements (1) to (5):(1) the molar ratio of ethylene (a) to an .alpha.-olefin (b) having 3 to 20 carbon atoms ranges from 40:60 to 95:5;(2) a given amount of non conjugated polyene (c) has a norbornene skeleton;(3) the available network chain density .nu. is not less than 1.5.times.10.sup.20 /cm.sup.3 after press cross-linking of the copolymer using a dicumyl peroxyde;(4) the ratio of the rate .gamma.1 of shear showing a shearing stress of 0.4.times.10.sup.6 dyn/cm.sup.2 as determined from the melt flow curve at 100.degree. C. and the rate .gamma.2 of shear showing a shearing stress of 2.4.times.10.sup.6 dyn/cm.sup.2, that is .gamma.2/.gamma.1 and the available network chain density .nu. has a relationship represented by the following general formula: 0.04.times.10.sup.-19 .ltoreq.Log(.gamma.2/.gamma.1)/.nu..ltoreq.0.20.times.10.sup.-19 ; and(5) the intrinsic viscosity [.eta.] ranges from 0.5 to 10 dl/g as measured in decalin at 135.degree. C. The copolymer has excellent cross-linkability, can be cross-linked with a small amount of a peroxide or the like, and a cross-linked rubber composition prepared using this copolymer has excellent heat aging resistance, mechanical strength, weather resistance, and oxone resistance.
摘要翻译： PCT No.PCT / JP97 / 01815 Sec。 371日期1998年3月30日 102（e）1998年3月30日PCT PCT 1997年5月28日PCT公布。公开号WO97 / 45466 日期1997年12月4日制备乙烯/α-烯烃/降冰片烯非共轭多烯无规共聚物的方法，包括同时制备满足以下要求（1）至（5）的乙烯无规共聚物：（1）乙烯 a）具有3至20个碳原子的α-烯烃（b）的范围为40:60至95:5; （2）给定量的非共轭多烯（c）具有降冰片烯骨架; （3）使用二枯基过氧化物压制交联共聚物后，可用的网络链密度nu不小于1.5×10 20 / cm 3; （4）从100℃的熔体流动曲线确定的剪切应力为剪切应力为0.4×10 6 dyn / cm 2的剪切速率γ1与剪切应力为2.4×10 6 dyn / cm 2，即γ2 /γ1，可用的网络链密度nu具有由以下通式表示的关系：0.04×10-19

18. 发明授权

US08993647B2 Foams, foaming compositions and applications thereof 有权
标题翻译：泡沫，发泡组合物及其应用
公开(公告)号：US08993647B2
公开(公告)日：2015-03-31
申请号：US12227293
申请日：2007-05-10
申请人： Takayuki Kajihara , Kiminori Noda , Masayoshi Yamaguchi , Takashi Hakuta
发明人： Takayuki Kajihara , Kiminori Noda , Masayoshi Yamaguchi , Takashi Hakuta
IPC分类号： C08J9/10 , C08J9/06 , C08L47/00 , A43B13/04 , A43B13/18 , A43B13/38 , C08J9/38 , A43B17/14 , C08J9/00 , C08L23/08 , C08L23/16 , B32B9/02 , B32B9/04 , B32B25/04 , B32B27/06 , B32B27/40
CPC分类号： C08J9/38 , A43B13/04 , A43B17/14 , B32B9/025 , B32B9/046 , B32B25/045 , B32B27/065 , B32B27/40 , B32B2437/02 , C08J9/0061 , C08J2201/024 , C08J2323/08 , C08J2423/00 , C08L23/0815 , C08L23/0846 , C08L23/16 , Y10T428/249988 , Y10T428/249991 , C08L23/00
摘要： [Objects] It is an object to provide a foam having a low specific gravity and a small compression set, more preferably a foam having a low specific gravity, a small compression set and uniform quality, a foaming composition, and applications of the foam.[Means for Solution] The foam is obtained by foaming an olefin polymer, wherein the foam has a specific gravity (d) in the range of 0.03 to 0.30, and a compression set (CS, %) and the specific gravity (d) satisfy the formula of CS≦−279×(d)+95. The foam is preferably obtained from a foaming composition that includes an ethylene polymer (A) including a specific ethylene/α-olefin copolymer (A1) and an ethylene/polar monomer copolymer (A2) in a specific mass ratio, and a specific ethylene/C3-20 α-olefin/non-conjugated polyene copolymer (B).
摘要翻译：本发明的目的是提供具有低比重和小压缩变形的泡沫，更优选具有低比重，小压缩变形和均匀质量的泡沫，发泡组合物和泡沫的应用。 [解决方案]泡沫是通过使烯烃聚合物发泡得到的，其中泡沫体的比重（d）在0.03至0.30的范围内，压缩永久变形（CS，％）和比重（d）满足 CS＆nlE的公式; -279×（d）+95。泡沫体优选由包含特定乙烯/α-烯烃共聚物（A1）的乙烯聚合物（A）和特定质量比的乙烯/极性单体共聚物（A2）的发泡组合物得到，特定的乙烯/ C3-20α-烯烃/非共轭多烯共聚物（B）。

19. 发明申请

US20120073655A1 PACKAGE BODY FOR STORING OR TRANSPORTING SOLAR CELL SEALING FILM AND METHOD FOR STORING OR TRANSPORTING SOLAR CELL SEALING FILM 审中-公开
标题翻译：用于储存或运输太阳能电池密封膜的包装体和用于储存或运输太阳能电池密封膜的方法
公开(公告)号：US20120073655A1
公开(公告)日：2012-03-29
申请号：US13376049
申请日：2010-06-04
申请人： Hiroshi Mori , Takanobu Murofushi , Shigenobu Ikenaga , Takashi Hakuta , Hirofumi Zenkoh
发明人： Hiroshi Mori , Takanobu Murofushi , Shigenobu Ikenaga , Takashi Hakuta , Hirofumi Zenkoh
IPC分类号： H01L31/0203 , B65D85/00 , B65D81/26 , H01L31/18
CPC分类号： H01L21/67363 , H01L21/67366 , H01L21/67369 , H01L21/67376 , H01L21/67389
摘要： A package for storing or transporting a solar cell sealing film includes: the solar cell sealing film containing a silane compound and/or a silane-modified resin; and a package bag packaging the solar cell sealing film. The absolute humidity inside the package is 1 to 15 g/m3. The package can store or transport the solar cell sealing film while adhesive force thereof with a substrate, solar cells, etc. is kept at a practicable level or higher. Furthermore, the package can reduce the breakage of the solar cells caused by an external shock while a solar cell module operates and the corrosion of electrodes caused by water etc. from the atmosphere.
摘要翻译：用于储存或运输太阳能电池密封膜的包装包括：含有硅烷化合物和/或硅烷改性树脂的太阳能电池密封膜; 和包装袋包装太阳能电池密封膜。包装内的绝对湿度为1至15 g / m3。该封装可以存储或运输太阳能电池密封膜，同时其与基板，太阳能电池等的粘合力保持在可行的水平或更高的水平。此外，当太阳能电池模块工作时，该封装可以减少由外部冲击引起的太阳能电池的损坏，以及由大气引起的水等的电极腐蚀。

20. 发明授权

US07977443B2 Copolymer rubber, rubber composition and rubber molded product 有权
标题翻译：共聚橡胶，橡胶组合物和橡胶成型品
公开(公告)号：US07977443B2
公开(公告)日：2011-07-12
申请号：US11990139
申请日：2006-08-09
申请人： Kotaro Ichino , Masao Kunizane , Takashi Hakuta
发明人： Kotaro Ichino , Masao Kunizane , Takashi Hakuta
IPC分类号： C08F236/20 , C08L19/00
CPC分类号： C08L23/16 , C08F210/18 , C08K3/04 , C08K3/22 , C08K3/26 , C08K5/09 , C08L71/00 , C08L2312/00 , C08L2666/22 , C08L2666/02 , C08F210/06 , C08F236/20 , C08F2500/25 , C08F2500/17
摘要： The invention provides a copolymer rubber excellent in processability in kneading and processability in extrusion; rubber compositions containing the rubber; and crosslinked moldings of the compositions excellent in sealing properties and shape retention. A random copolymer rubber of ethylene (A), a C3-20 α-olefin (B) and a nonconjugated polyene (C) which satisfies the following requirements (1) to (5): (1) the structural units (A) and (B) are contained at an (A)/(B) molar ratio of 40/60 to 95/5, (2) the structural unit (C) content is 0.01 to 5% by mole, (3) the limiting viscosity [η] is 1.0 to 5.0 dl/g as determined in decahydronaphthalene at 135°., (4) the Mw/Mn is 1 to 8, and (5) the P value is 0.46 to 1.00 as defined by formula (1): P=Ln(limiting viscosity [η])−5.0×105×η*(10) (1) (wherein Ln is a natural logarithm; and η*(10) is viscosity (Pa·sec) as determined at 190° C. and at 10 rad/sec.
摘要翻译：本发明提供一种挤出加工性优异的挤出加工性的共聚物橡胶，含有橡胶的橡胶组合物; 和密封性能和形状保持性优异的组合物的交联模塑品。（A），C3-20α-烯烃（B）和非共轭多烯（C）的无规共聚物橡胶，其满足以下要求（1）至（5）：（1）结构单元（A）和（A）/（B）摩尔比为40/60〜95/5，（2）结构单元（C）含量为0.01〜5摩尔％，（3）极限粘度[ （10）Mw / Mn为1〜8，（5）如式（1）所定义，P值为0.46〜1.00：（摩尔） P = Ln（特性粘度[eegr]） - 5.0×105×＆eegr *（10）（1）（其中Ln为自然对数;＆eegr; *（10）为粘度（Pa·sec） 190℃和10弧度/秒。

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