RING-OPENING METATHESIS POLYMERIZATION (ROMP) OF CYCLO-OLEFINS WITH MOLYBDENUM CATALYSTS
申请人:——
公开号:US20020111446A1
公开(公告)日:2002-08-15
A polymerization system for ring opening polymerization of cycloolefins, comprising a catalyst [MOX
2
L
2
], a Lewis acid as co-catalyst, and a chain-transfer agent,
1
wherein
(1) both X groups are the same halogen atom selected from the group consisting of Cl and Br, and both L groups are the same halogen atom as X; or
(2) both of the X groups are the same halogen atom selected from the group consisting of Cl and Br, and both of the L groups are the same straight chain or branched alkyl group having 1-4 carbon atoms; or
(3) both X groups are the same halogen atom selected from the group consisting of Cl and Br, and both L groups are the same straight chain or branched alkoxy group having 1-4 carbon atoms; or
(4) both X groups are the same alkyl group having 1-4 carbon atoms, and both L groups are the same alkoxy group having 1-4 carbon atoms; or
(5) one X group is a halogen atom selected from the group consisting of Cl and Br, and the other X group together with both L groups constitute a tridentate ligand;
or
(6) one X group is a straight chain or branched alkoxy group having 1-4 carbon atoms, and the other X group together with both L groups constitute a tridentate ligand.
一种用于环烯烃开环聚合的聚合系统,包括催化剂[MOX
2
L
2
路易斯酸作为助催化剂,以及一种链转移剂、
1
其中
(1) 两个 X 基团均为选自 Cl 和 Br 组成的组中的相同卤原子,且两个 L 基团均为与 X 相同的卤原子;或
(2) 两个 X 基团均为选自 Cl 和 Br 组成的组中的相同卤原子,且两个 L 基团均为具有 1-4 个碳原子的相同直链或支链烷基;或
(3) 两个 X 基团均为选自 Cl 和 Br 组成的组的相同卤原子,且两个 L 基团均为具有 1-4 个碳原子的相同直链或支链烷氧基;或
(4) 两个 X 基团均为具有 1-4 个碳原子的相同烷基,两个 L 基团均为具有 1-4 个碳原子的相同烷氧基;或
(5) 一个 X 基团是选自 Cl 和 Br 组的卤素原子,另一个 X 基团与两个 L 基团一起构成三叉配体;
或
(6) 一个 X 基团是具有 1-4 个碳原子的直链或支链烷氧基,另一个 X 基团与两个 L 基团一起构成三叉配体。