Telechelic polymers and heterotelechelic polydiene block polymer

Details Telechelic polymers and heterotelechelic polydiene block polymer Telechelic polymers and heterotelechelic polydiene block polymer

1997-09-18

1999-06-08

Sellers, Robert E.

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

Synthetic resins

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

525 89, 525 92F, 525 98, C08L 5300, C08L 5302, C08L 3308, C08L 6702

Patent

active

059105410

ABSTRACT:
A pressure sensitive structural or sealant composition comprises (a) from 15 to 95% by weight of a telechelic polymer such as a hydroxyl-functional telechelic polymer and from 5 to 85% by weight of a heterotelechelic polydiene block polymer wherein at least one of the functionalities is the same as the functionality of the telechelic polymer, such as a heterotelechelic polydiene block polymer with hydroxyl and glycidyl ether funciontialities, and (b) a dual curing system wherein one curing agent cures the teolechelic polymer and the common functionality on the heterotelechelic polydiene block polymer such as a polyisocyanate, and the other curing agent cures the other functionality on the heterotelechelic polydiene block polymer at higher temperatures but does not cure under conditions required to cure the telechelic polymer, such as a polycarboxylic acid, polycarboxylic acid anhydride or a catalyst.

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