Cyclic conjugated diene polymer and method of producing same

Details Cyclic conjugated diene polymer and method of producing same Cyclic conjugated diene polymer and method of producing same

1995-12-08

1998-08-11

Teskin, Fred

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526180, 526308, 5263291, 526347, 525272, 525297, 525299, 525314, C08F29704, C08F29702, C08F 3206

Patent

active

057928240

ABSTRACT:
Disclosed is a cyclic conjugated diene polymer comprising a main chain represented by the formula (I): ##STR1## wherein A to E are monomer units constituting the main chain in which A to E are arranged in any order, and l to p are, respectively, weight percentages of A to E, based on the total weight of A to E; A is selected from cyclic conjugated diene monomer units, B is selected from chain conjugated diene monomer units, C is selected from vinyl aromatic monomer units, D is selected from polar monomer units, and E is selected from an ethylene monomer unit and .alpha.-olefin monomer units; and l to p satisfy the following requirements: 0.5.ltoreq.l.ltoreq.100, 0.ltoreq.m, n, o, p<100, wherein when l=100 and the A monomer units are comprised of monomer units which are the same, the polymer has a number average molecular weight Mn of from 40,000 to 5,000,000, wherein when l=100 and the A monomer units are comprised of monomer units which are different, the polymer has an Mn of from 25,000 to 5,000,000, and wherein when 0.5.ltoreq.l<100, the polymer has an Mn of from 500 to 5,000,000. The cyclic conjugated diene polymer has excellent thermal and mechanical properties. The polymer can be advantageously produced using a catalyst comprised of a complex of an organometallic compound containing a Group IA metal with a complexing agent, especially an amine.

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