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公开(公告)号:US06660809B1
公开(公告)日:2003-12-09
申请号:US09020307
申请日:1998-02-06
IPC分类号: C08F25500
CPC分类号: C08L55/005 , C08F2/08 , C08F110/02 , C08F210/18 , C08F255/00 , C08F255/02 , C08F257/02 , C08F290/00 , C08F290/04 , C08F290/042 , C08F290/044 , C08F297/08 , C08F297/083 , C08L23/02 , C08L23/08 , C08L23/0815 , C08L51/06 , C08L55/00 , C08L2205/02 , C08L2314/06 , C08L2666/24 , C08L2666/04 , C08L2666/02 , C08F2500/03 , C08F2500/09 , C08F2500/12 , C08F210/08 , C08L2666/06
摘要: A polyolefin product is provided which comprises a branched olefin copolymer having an isotactic polypropylene backbone, polyethylene branches and, optionally, one or more comonomers. The total comonomer content of the branched olefin copolymer is from 0 to 20 mole percent. Also, the mass ratio of the isotactic polypropylene to the polyethylene ranges from 99.9:0.1 to 50:50. Additionally, a process is provided for preparing a branched olefin copolymer which comprises: a) copolymerizing ethylene, optionally with one or more copolymerizable monomers, in a polymerization reaction under conditions sufficient to form copolymer having greater than 40% chain end-group unsaturation; b) copolymerizing the product of a) with propylene and, optionally, one or more copolymerizable monomers, in a polymerization reactor under suitable polypropylene polymerization conditions using a chiral, stereorigid transition metal catalyst capable of producing isotactic polypropylene; and c) recovering a branched olefin copolymer.
摘要翻译: 提供了一种聚烯烃产品,其包含具有全同立构聚丙烯骨架的支链烯烃共聚物,聚乙烯分支和任选的一种或多种共聚单体。 支链烯烃共聚物的总共聚单体含量为0〜20摩尔%。 另外,全同立构聚丙烯与聚乙烯的质量比为99.9:0.1〜50:50。 另外,提供了一种制备支链烯烃共聚物的方法,其包括:a)在足以形成具有大于40%的链端基不饱和度的共聚物的条件下,在聚合反应中将乙烯任选地与一种或多种可共聚单体共聚; b )使用可产生全同立构聚丙烯的手性立体刚性过渡金属催化剂,在合适的聚丙烯聚合条件下,在聚合反应器中将a)的产物与丙烯和任选的一种或多种可共聚单体共聚; 和c)回收支链烯烃共聚物。
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公开(公告)号:US06423793B1
公开(公告)日:2002-07-23
申请号:US09631160
申请日:2000-08-03
IPC分类号: C08F442
CPC分类号: C08L51/06 , C08F255/00 , C08F255/02 , C08F290/04 , Y10S526/943 , C08L2666/04
摘要: A thermoplastic elastomer is provided comprising a branched olefin polymer having crystalline sidechains and an amorphous backbone wherein at least 90 mole percent of the sidechains are isotactic or syndiotactic polypropylene and at least 80 mole percent of the backbone is atactic polypropylene. Additionally, a process is provided for producing a thermoplastic elastomer composition comprising: a) contacting, in solution, at a temperature from about 90° C. to about 120° C., propylene monomers with a catalyst composition comprising a chiral, stereorigid transition metal catalyst compound capable of producing isotactic or syndiotactic polypropylene; b) copolymerizing the product of a) with propylene and, optionally, one or more copolymerizable monomers, in a polymerization reactor using an achiral transition metal catalyst capable of producing atactic polypropylene; and c) recovering a branched olefin polymer.
摘要翻译: 提供了一种热塑性弹性体,其包括具有结晶侧链和无定形骨架的支链烯烃聚合物,其中至少90摩尔%的侧链是全同立构或间同立构聚丙烯,并且至少80摩尔%的主链是无规聚丙烯。 此外,提供了一种制备热塑性弹性体组合物的方法,其包括:a)在约90℃至约120℃的温度下,在溶液中使丙烯单体与催化剂组合物接触,所述催化剂组合物包含手性立体刚性过渡金属 能够产生全同立构或间同立构聚丙烯的催化剂化合物; b)使用能够生产无规聚丙烯的非手性过渡金属催化剂,在聚合反应器中使a)的产物与丙烯和任选的一种或多种可共聚单体共聚; 和c)回收支链烯烃聚合物。
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公开(公告)号:US06225432B1
公开(公告)日:2001-05-01
申请号:US09375774
申请日:1999-08-17
IPC分类号: C08F11006
CPC分类号: C08F110/06 , C08F4/65908 , C08F4/65912 , C08F4/65916 , C08F10/06 , C08L23/12 , C08L2205/02 , C08L2314/06 , C08F4/65927 , C08L2666/04 , C08F2500/03 , C08F2500/09 , C08F2500/17
摘要: Branched polypropylene compositions which have improved melt strength and good processability are provided. The branched polypropylene compositions of the present invention have a polydispersity of less than 4.0 and a melt point greater than 90° C. Further, the weight average branching index g of the polypropylene compositions is less than 0.95. Additionally, a novel process is provided for efficiently producing a branched polypropylene composition comprising: a) contacting propylene monomers in a reactor with an inert hydrocarbon solvent or diluent and a catalyst composition comprising one or more single site catalyst compounds capable of producing stereospecific polypropylene at a temperature from about 40° C. to about 120° C., wherein the ratio in the reactor of the propylene monomers to the inert hydrocarbon solvent or diluent is less than 9.0, and further, wherein the propylene monomers and the inert hydrocarbon solvent or diluent comprise at least 50 weight percent of the total contents of the reactor; and b) recovering a branched polypropylene composition having a polydispersity of less than or equal to 4.0 and a melting point greater than 90° C. wherein the weight average branching index, g, of the branched polypropylene composition is less than 0.95.
摘要翻译: 提供了具有改进的熔体强度和良好加工性能的支化聚丙烯组合物。 本发明的支化聚丙烯组合物的多分散性小于4.0,熔点大于90℃。此外,聚丙烯组合物的重均分支指数g小于0.95。 另外,提供了一种用于有效生产支化聚丙烯组合物的新方法,其包括:a)使反应器中的丙烯单体与惰性烃溶剂或稀释剂和包含一种或多种能够产生立体有择聚丙烯的单中心催化剂化合物的催化剂组合物接触 温度为约40℃至约120℃,其中丙烯单体与惰性烃溶剂或稀释剂的反应器中的比例小于9.0,此外,其中丙烯单体和惰性烃溶剂或稀释剂 占反应器总含量的至少50重量%; 和b)回收多分散度小于或等于4.0且熔点大于90℃的支化聚丙烯组合物,其中支化聚丙烯组合物的重均分支指数g小于0.95。
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54.
公开(公告)号:US6147180A
公开(公告)日:2000-11-14
申请号:US19609
申请日:1998-02-06
IPC分类号: C08F2/08 , C08F4/64 , C08F10/06 , C08F110/02 , C08F210/18 , C08F255/00 , C08F255/02 , C08F257/02 , C08F290/00 , C08F290/04 , C08F297/08 , C08L23/02 , C08L23/08 , C08L51/06 , C08L55/00 , C08F210/02 , C08F210/06
CPC分类号: C08L55/005 , C08F2/08 , C08F255/00 , C08F255/02 , C08F257/02 , C08F290/00 , C08F290/04 , C08F290/042 , C08F290/044 , C08F297/08 , C08F297/083 , C08L23/02 , C08L23/08 , C08L23/0815 , C08L51/06 , C08F110/02 , C08F210/18 , C08L2205/02 , C08L2314/06 , C08L55/00
摘要: The invention relates to a thermoplastic elastomer composition comprising a branched olefin copolymer derived from olefinically unsaturated monomers capable of insertion polymerization having A) a T.sub.g as measured by DSC less than or equal to 10.degree. C.; B) T.sub.m greater than 80.degree. C.; C) an elongation at break of greater than or equal to 300%; D) a tensile strength of greater than or equal to 1,500 psi (10,300 kPa); and E) an elastic recovery of greater than or equal to 50%. The invention also relates to process for preparing the invention composition comprising: A) polymerizing ethylene or propylene and optionally, one or more copolymerizable monomers in a polymerization reaction under conditions sufficient to form copolymer having greater than 40% chain end-group unsaturation; B) copolymerizing the product of A) with ethylene and one or more comonomers so as to prepare said branched olefin copolymer. The branched olefin copolymer compositions of the invention are suitable as replacements for styrene block copolymer compositions and in other traditional thermoplastic elastomer applications.
摘要翻译: 本发明涉及一种热塑性弹性体组合物,其包含衍生自能够插入聚合的烯属不饱和单体的支链烯烃共聚物,其具有A)通过DSC测量的Tg小于或等于10℃; B)Tm大于80℃。 C)断裂伸长率大于或等于300%; D)拉伸强度大于或等于1,500psi(10,300kPa); 和E)大于或等于50%的弹性恢复。 本发明还涉及制备本发明组合物的方法,其包括:A)在足以形成具有大于40%链端基不饱和度的共聚物的条件下,在聚合反应中聚合乙烯或丙烯以及任选的一种或多种可共聚单体; B)使A)的产物与乙烯和一种或多种共聚单体共聚以制备所述支链烯烃共聚物。 本发明的支链烯烃共聚物组合物适合作为苯乙烯嵌段共聚物组合物和其它传统热塑性弹性体应用的替代物。
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