摘要:
The invention is directed to a process for the polymerization of ethylene in the presence of a catalyst comprising a Ti, Zr, Hf or V metal centre; and a ligand according to Formula (I), in which B = -CH 2 -, -CH 2 CH 2 -, -CH=CH-, 1,2-phenylene or 2,6-pyridyl, R 1, R 2 , R 3 ,R 4 may be independently of one other the same or different H, C 1 -C 4 alkyl radical, Br or Cl and X =NH, O or S; or a ligand containing a pyridine moiety or a N-allyl-2-benzimidazolyl ligand.
摘要:
A process for polymerizing an alpha-olefin is disclosed. The polymerization is performed in the presence of a catalyst system comprising a three-membered titanacycle. A wide variety of titanacycles can be readily prepared, making this a versatile and inexpensive olefin polymerization process.
摘要:
Pyridine complex of zirconium having general formula (I): • Said pyridine complex of zirconium having general formula (I) may advantageously be used in a catalytic system for the (co)polymerization of conjugated dienes.
摘要:
A multistep process for the selective production of an oligomer oil having predetermined properties in which the first step involves the polymerization of a feedstock containing one or more C3 to C20 1-olefins in the presence of a catalyst comprising a bulky ligand transition metal catalyst and in which a subsequent step involves the oligomerization of at least a preselected fraction of the product of the first step.
摘要:
Disclosed herein are processes for polymerizing ethylene, acyclic olefins, and/or selected cyclic olefins, and optionally selected olefinic esters or carboxylic acids, and other monomers. The polymerizations are catalysed by selected transition metal compounds, and sometimes other co-catalysts. Since some of the polymerizations exhibit some characteristics of living polymerizations, block copolymers can be readily made. Many of the polymers produced are often novel, particularly in regard to their microstructure, which gives some of them unusual properties. Numerous novel catalysts are disclosed, as well as some novel processes for making them. The polymers made are useful as elastomers, molding resins, in adhesives, etc. Also described herein is the synthesis of linear α-olefins by the oligomerization of ethylene using as a catalyst system a combination of a nickel compound having a selected α-diimine ligand and a selected Lewis or Bronsted acid, or by contacting selected $(a)-diimine nickel complexes with ethylene.
摘要:
The present description relates to an olefin block copolymer having excellences in elasticity and heat resistance and its preparation method. The olefin block copolymer includes a plurality of blocks or segments, each of which includes an ethylene or propylene repeating unit and an α-olefin repeating unit at different weight fractions. The olefin block copolymer has a density of 0.85 to 0.92 g/cm 3 , and density X (g/cm 3 ) and TMA (Thermal Mechanical Analysis) value Y (°C) satisfy a defined relationship.
摘要翻译:本发明涉及具有优异的弹性和耐热性的烯烃嵌段共聚物及其制备方法。 烯烃嵌段共聚物包括多个嵌段或链段,每个嵌段或链段各自包括乙烯或丙烯重复单元和不同重量分数的α-烯烃重复单元。 烯烃嵌段共聚物的密度为0.85〜0.92g / cm 3,密度X(g / cm 3)和TMA(热机械分析)值Y(℃)满足规定的关系。
摘要:
An olefin polymerisation catalyst comprising: (I) a complex comprising a ligand of formula (I)
coordinated (as shown) to a metal ion M; and (II) a cocatalyst; or the reaction product thereof;
wherein each X which may be the same or different is NR 3 or O; each Y which may be the same or different is C, S, P, S=O; each R 1 which may be the same or different is hydrogen, an optionally substituted C 1-20 hydrocarbyl group, -CN, N(R 4 ) 2 , silyl, siloxy, -CF 3 , -SH, -C(=NR 4 )NR 4 R 4 , -NR 4 C(=O)R 4 , -NR 4 C(=NR 4 )R 4 , -NR 4 C(=NR 4 )NR 4 R 4 , -NR 4 C(=O)OR 4 , -NR 4 C(=O)NR 4 R 4 , -NR 4 S(O) 2 R 4 , -S(O) 2 NR 4 R 4 , -C(=S)NR 4 R 4 , -OC(=O)R 4 , -OC(=O)NR 4 R 4 , -OR 4 , optionally substituted heterocyclyl, or optionally substituted heteroaryl; each R 2 which may be the same or different is an optionally substituted C 1-20 hydrocarbyl group, halo, silyl, siloxy, nitro, -CN, N(R 4 ) 2 , -CF 3 , -SH, C(=O)R 4 , OC(=O)R 4 , C(=O)OR 4 , -OC(=O)NR 4 R 4 , -OR 4 , optionally substituted heterocyclyl, or optionally substituted heteroaryl or two R 2 groups attached to adjacent ring atoms together form an optionally substituted 5- to 8-membered fused ring; each R 3 which may be the same or different is hydrogen, or an optionally substituted C 1-20 hydrocarbyl group; each R 4 which may be the same or different is a hydrogen, an optionally substituted C 1-20 hydrocarbyl group, or two R 4 groups taken together form an optionally substituted 5- to 8-membered fused ring; a is 0 to 3; b is 1 unless the atom Y to which R 1 is attached is P wherein b is 2.
摘要翻译:一种烯烃聚合催化剂,其包含:(I)包含与金属离子M配位的(如图所示)的式(I)配位体的络合物; 和(II)助催化剂; 或其反应产物; 其中可以相同或不同的每个X是NR 3或O; C,S,P,S = O可以是相同或不同的Y。 每个R 1可以相同或不同,是氢,任选取代的C 1-20烃基,-CN,N(R 4)2,甲硅烷基,甲硅烷氧基,-CF 3,-SH,-C(= NR 4) )NR 4 R 4,-NR 4 C(= O)R 4,-NR 4 C(= NR 4)R 4,-NR 4 C(= NR 4)NR 4 R 4,-NR 4 C(= O )OR 4,-NR 4 C(= O)NR 4 R 4,-NR 4 S(O)2 R 4,-S(O)2 NR 4 R 4,-C(= S)NR 4 R 4, -OC(= O)R 4,-OC(= O)NR 4 R 4,-OR 4,任选取代的杂环基或任选取代的杂芳基; 每个R 2可以相同或不同,是任选取代的C 1-20烃基,卤素,甲硅烷基,甲硅烷氧基,硝基,-CN,N(R 4)2,-CF 3,-SH,C(= O )R 4,OC(= O)R 4,C(= O)OR 4,-OC(= O)NR 4 R 4,-OR 4,任选取代的杂环基或任选取代的杂芳基或两个R 2基团 相邻的环原子一起形成任选取代的5至8元稠环; 每个R 3可以相同或不同,是氢或任选取代的C 1-20烃基; 每个可以相同或不同的R 4是氢,任选取代的C 1-20烃基,或两个R 4基团一起形成任选取代的5至8元稠环; a是0到3; b除非与R 1连接的原子Y是P,其中b是2,b是1。
摘要:
The invention provides a comprising one or more ethylene interpolymers, and wherein the interpolymers, or the composition, has a melt viscosity from 1 to 30,000 cP at 177°C, and wherein at least one ethylene interpolymer has an Rv from 0.3 to 0.99. The invention further provides a composition comprising at least one low molecular weight (LMW) ethylene interpolymer, and at least one high molecular weight (HMW) ethylene interpolymer, and wherein the composition has a melt viscosity from 1 to 30,000 cP at 177°C, and wherein the sum of the Rv from the low molecular weight interpolymer and the high molecular weight interpolymer is from 0.3 to 2. The invention further provides for processes of making such compositions, processes for functionalizing the interpolymer(s) of such compositions, and articles comprising at least one component prepared from an inventive composition.