Cycloolefin block copolymers and a process for their preparation

Details Cycloolefin block copolymers and a process for their preparation Cycloolefin block copolymers and a process for their preparation

1994-05-10

1995-12-12

Jagannathan, Vasu S.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525297, 525 88, 525 95, 525 97, C08F29708, C08L 5300

Patent

active

054750601

ABSTRACT:
Cycloolefin block copolymers and a process for their preparation Cycloolefin block copolymers, which in particular are suitable as phase promoters, are preferably obtained by copolymerization of polycyclic olefins, such as norbornene, with acyclic olefins, such as ethylene, by, at a molecular weight distribution M.sub.w /M.sub.n of the polymer block forming of less than 2, changing the reaction conditions one or more times in such a way that the monomer/comonomer ratio changes by at least 10% or a further polymerizable monomer is metered into the monomer or the monomers.

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patent: 3932369 (1976-01-01), Sartori et al.
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patent: 5087677 (1992-02-01), Brekner et al.
patent: 5173540 (1992-12-01), Saito et al.
patent: 5204429 (1993-04-01), Kaminsky et al.
Origin and Early Development of Rubber-Toughened Plastics, Raymond B. Seymour, Depart. of Polymer Science, U. of Southernn Mississippi, Hattiesburg, Md. 39406-0076, pp. 1-64 Advances in Chemistry Series (1989).

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