Carboxyl terminated polydienes

Details Carboxyl terminated polydienes Carboxyl terminated polydienes

1974-11-08

1978-01-17

Gerstl, Robert

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560 84, 560 88, 560120, 560194, 560196, 560198, C07C 6708

Patent

active

040693848

ABSTRACT:
Carboxyl terminated polymers prepared by reacting a cyclic anhydride with a liquid polymeric hydroxyl terminated polymer selected from polyethers, polydienes, and copolymers of the dienes with styrene or acrylonitrile in the presence of a catalyst selected from quaternary ammonium salts and from halogen acid salts of amines. The carboxyl terminated polymers can be used as flexibilizers in epoxy resins.

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