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公开(公告)号：EP0835285A1
公开(公告)日：1998-04-15
申请号：EP96923540.0
申请日：1996-06-28
CPC分类号： C08L23/10 , C08L23/283 , C08L51/06 , C08L2666/04 , C08L2666/24
摘要： Crystalline propylene polymer compositions having improved impact strength and improved clarity are disclosed. The composition is prepared by melt blending a propylene polymer, e.g., polypropylene, and from about 1 to 35 wt.% of an elastomeric interpolymer of a C4 to C8 isomonoolefin, e.g., isobutylene, and a para-alkystyrene comonomer, e.g., para-methylstyrene. The interpolymer preferably contains a benzylic functional group such as halogen (bromine). The composition may also contain from about 0.5 to 15 wt.% of the amide reaction product of an organic acid-grafted propylene polymer, e.g., maleic anhydride grafted polypropylene, and a polyfunctional primary amine.
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公开(公告)号：EP0544767A1
公开(公告)日：1993-06-09
申请号：EP91915403.0
申请日：1991-08-19
发明人： WHITE, Donald, Andrew , FLATLEY, Lawrence, William , YEH, Richard, Cheng-Ming , MURPHY, Raymond, Francis
IPC分类号： C08F8
CPC分类号： C08F8/50 , C08F8/06 , C08F2800/10 , C08F2810/10 , C08F110/10 , C08F210/10 , C08F212/12 , C08F2500/02
摘要： Est décrit un procédé pour produire un polymère d'isooléfine à faible poids moléculaire en mettant en contact dans des conditions de conversion un polymère d'isooléfine saturé à poids moléculaire élevé, par exemple, du polyisobutylène ou un copolymère d'une isooléfine C4 à C7 et d'un para-alkylstyrène, dans la phase de fusion, avec un initiateur, tel qu'un gaz renfermant de l'oxygène, un peroxyde organique ou un composé azo.
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公开(公告)号：EP0616616B2
公开(公告)日：2001-02-28
申请号：EP93901349.6
申请日：1992-12-12
发明人： AUDA, Richard, Stephen , DAVIS, William, Myers , CHUNG, David, Yen-Lung , FLATLEY, Lawrence, William, Jr. , JONES, Brenton, George , WHITE, Donald, Andrew , WOUDBOER, Hans, Gerlach
IPC分类号： C08F8/00
CPC分类号： C08F8/00 , B29B9/065 , B29C47/0011 , B29C47/0021 , B29C47/367 , B29C47/762 , B29C47/827 , B29C47/8895 , B29C47/92 , B29C2947/92704 , C08F10/00
摘要： Multiple sequential chemical reactions on a polymeric feedstock are carried out in an extruder with multiple reaction zones. Each reaction zone has means for introduction of reagents, for mixing of reagents with polymer and for removal of by/co-products or unreacted reagents.
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公开(公告)号：EP0595832A1
公开(公告)日：1994-05-11
申请号：EP92913083.0
申请日：1992-06-02
CPC分类号： C08L51/003 , C08L51/00 , C08L51/06 , C08L77/00 , C08L2666/14 , C08L2666/02 , C08L2666/24
摘要： On décrit une composition thermoplastique qui comprend un polyamide, un polymère greffé d'une isomono-oléfine et d'un alkylstyrène, tel qu'un copolymère d'isobutylène et de paraméthylstyrène greffé avec un anhydride d'acide maléique, et éventuellement un polymère de polyoléfine.
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公开(公告)号：EP0582588A1
公开(公告)日：1994-02-16
申请号：EP92908751.0
申请日：1992-03-12
CPC分类号： C08F255/10 , C08F8/48 , C08F257/02 , C08F2800/20 , C08F222/40 , C08F222/06 , C08F8/32
摘要： Polymère greffé d'une isomonooléfine et d'un alkylestyrène tel qu'anhydride maléique-copolymère greffé d'isobutylène et para-méthylstyrène. L'invention concerne également des procédés de préparation du polymère greffé.
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公开(公告)号：EP0828761B1
公开(公告)日：2000-07-12
申请号：EP96920361.1
申请日：1996-05-23
IPC分类号： C08F8/00
CPC分类号： C08K5/14 , C08F8/50 , C08F255/00 , C08F255/10 , C08F2800/20 , C08F2810/10 , C08L23/10 , C08L23/22 , C08F222/40
摘要： The present invention provides a post-polymerization process for modifying the molecular weight distribution of a polymer having a monomodal molecular weight distribution, which polymer normally exhibits a decrease in molecular weight when subjected to high shear mixing in the presence of a free radical initiator, to produce a polymer having a bimodal molecular weight distribution. The process comprises: (a) heating a mixture of the polymer, a polyunsaturated crosslinking agent and, optionally, a free radical initiator, to form a uniform mixture; and (b) subjecting said mixture to high shear mixing conditions until a polymer having a bimodal molecular weight distribution is obtained. In the more preferred embodiment, the shear mixing is conducted in the presence of a free radical initiator such as an organic peroxide and the crosslinking agent is a difunctional compound containing diallyl, divinyl or diethylenic unsaturation. The process results in the development of polymers having a bimodal molecular weight distribution as a consequence of the coupling of some of the free radically degraded polymer chains added through the unsaturated functionality of the crosslinking agent. The high molecular weight species in the bimodal distribution lends a higher melt strength to the polymer and the lower molecular weight species imparts improved processing and melt flow properties.
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公开(公告)号：EP0544767B1
公开(公告)日：1997-09-03
申请号：EP91915403.9
申请日：1991-08-19
发明人： WHITE, Donald, Andrew , FLATLEY, Lawrence, William , YEH, Richard, Cheng-Ming , MURPHY, Raymond, Francis
IPC分类号： C08F8/50
CPC分类号： C08F8/50 , C08F8/06 , C08F2800/10 , C08F2810/10 , C08F110/10 , C08F210/10 , C08F212/12 , C08F2500/02
摘要： A process is provided for producing a low molecular weight isoolefin polymer by contacting at conversion conditions a higher molecular weight saturated isoolefin polymer, for example, polyisobutylene or a copolymer of a C4 to C7 isoolefin and a para-alkylstyrene, in the melt phase, with an initiator, such as an oxygen-containing gas, an organic peroxide or an azo compound.
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公开(公告)号：EP0595832B1
公开(公告)日：1997-05-07
申请号：EP92913083.9
申请日：1992-06-02
CPC分类号： C08L51/003 , C08L51/00 , C08L51/06 , C08L77/00 , C08L2666/14 , C08L2666/02 , C08L2666/24
摘要： A thermoplastic composition is provided which comprises a polyamide, a grafted polymer of an isomonoolefin and an alkylstyrene, such as a maleic anhydride-grafted copolymer of isobutylene and paramethylstyrene, and optionally a polyolefin polymer.
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9.发明公开COMPATIBILIZATION OF POLAR AND NONPOLAR ELASTOMER BLENDS USING FUNCTIONALIZED ETHYLENE/PROPYLENE COPOLYMERS OR ETHYLENE/PROPYLENE/DIENE TERPOLYMERS 失效相容极性和非极性弹性体组合物使用官能化乙烯 - 丙烯或乙烯 - 丙烯 - 即成。
公开(公告)号：EP0713509A1
公开(公告)日：1996-05-29
申请号：EP93917018.0
申请日：1993-07-07
CPC分类号： C08L11/00 , C08L23/16 , C08L2666/06 , C08L2666/04 , C08L2666/24
摘要： This invention relates to a compatibilized rubber composition and a process for compatibilizing polar/nonpolar rubber blends comprising blending functionalized EPDM or EP rubber with neoprene rubber and at least one nonpolar elastomer selected from the group including, but not limited to, EP and EPDM.
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10.发明公开COMPATIBILIZED ELASTOMER BLENDS CONTAINING GRAFTED POLYMERS OF AN ISOOLEFIN AND ALKYLSTYRENE 失效兼容MADE弹性体混合物含异烯烃和烷基苯乙烯的接枝聚合物
公开(公告)号：EP0695327A1
公开(公告)日：1996-02-07
申请号：EP94914838.0
申请日：1994-04-19
CPC分类号： C08L23/22 , C08L9/00 , C08L11/00 , C08L21/00 , C08L23/16 , C08L25/16 , C08L25/18 , C08L51/06 , C08L2666/24 , C08L2666/02
摘要： A compatibilized polymer blend composition is provided which comprises a mixture of an elastomeric polymer and an acid-grafted polymer of an isomonoolefin and an alkylstyrene such as a blend of EPDM and a maleic anhydride-grafted copolymer of isobutylene and para-methylstyrene.
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