摘要:
Unsaturated copolymer which is a copolymer of an &agr;olefin of 2 to 12 carbon atoms and a conjugated diene monomer represented by the following formula (I-a) and has the properties: (a) in said copolymer, 1,2-addition units (including 3,4-addition units) derived from the conjugated diene monomer (I-a) form double bonds in the side chain of the copolymer, 1,4-addition units derived from the conjugated diene monomer (I-a) form double bonds in the main chain of the copolymer, and the quantity ratio of the double bonds of the side chain derived from the 1,2-addition units to the double bonds of the main chain derived from the 1,4-addition units (side chain double bonds derived from 1,2-addition units/main chain double bonds derived from 1,4-addition units) is in the range of 10/90 to 99/1 (b) five-membered rings are present in the main chain of said copolymer; and (c) the quantity ratio of the double bonds from all of the addition units to the five-membered rings (total of double bonds from all addition units/five-membered rings) is in the range of 20/80 to 90/10; wherein R2 is a hydrogen atom, an alkyl group of 1 to 8 carbon atoms or an aryl group.
摘要:
The invention provides olefin polymerization catalyst exhibiting excellent polymerization activities, a process for olefin polymerization using the catalyst, a novel transition metal compound useful for the catalyst, and an &agr;-olefin/conjugated diene copolymer having specific properties. The olefin polymerization catalyst of the invention comprises (A) a transition metal compound of formula (I) or (II), and (B) an organometallic compound, an oranoaluminum oxy-compound or an ionizing ionic compound. The novel transition metal compound of the invention is a compound of formula (I) wherein M is a transition meal atom of Group 3 or 4 of the periodic table; m is an integer of 1 to 3; R1 is a hydrocarbon group, etc.; R2 to R5 are each H, a halogen, a hydrocarbon group, etc.; R6 is a halogen, a hydrocarbon group, etc.; n is a number satisfying a valence of M; and X is a halogen, a hydrocarbon group, etc.
摘要翻译:本发明提供了表现出优异聚合活性的烯烃聚合催化剂,使用该催化剂的烯烃聚合方法,用于催化剂的新型过渡金属化合物和具有特定性能的α-烯烃/共轭二烯共聚物。 本发明的烯烃聚合催化剂包含(A)式(I)或(II)的过渡金属化合物和(B)有机金属化合物,或者是含有氧化铝的氧化合物或离子化离子化合物。 本发明的新型过渡金属化合物是式(I)的化合物,其中M是周期表第3或4族的过渡膳食原子; m为1〜3的整数。 R 1是烃基等; R 2〜R 5各自为H,卤素,烃基等; R 6是卤素,烃基等; n是满足M价的数; X为卤素,烃基等
摘要:
The present invention pertains to a substantially linear olefin polymer which has long chain branches, a high melt flow ratio, a narrow molecular weight distribution and critical shear rate at onset of surface melt fracture of a least 50 percent greater than the critical shear rate at the onset of melt fracture which is substantially higher than that of a linear olefin polymer having about the same molecular weight and molecular weight distribution. The novel polymer is an interpolymer of ethylene with at least one C3-C20 alpha-olefin and at least one unsaturated monomer.