Preparation of modified polymers of N-vinylpyrrolid-2-one and th

Details Preparation of modified polymers of N-vinylpyrrolid-2-one and th Preparation of modified polymers of N-vinylpyrrolid-2-one and th

1980-02-26

1981-07-07

Hamrock, William F.

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

Synthetic resins

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

525256, 525262, 525285, 525359, 525337, C08F 804

Patent

active

042775760

ABSTRACT:
A process for the preparation of modified poly-N-vinylpyrrolid-2-one containing two identical reactive groups, wherein polyvinylpyrrolidone is treated with complex hydrides, with or without further reaction of the modified polyvinylpyrrolidone with a reactive bifunctional compound, to give a polymer which has a molecular weight at least 2.5 times as great as that of the starting polymer.

REFERENCES:
patent: 4123396 (1978-10-01), Rembaum et al.
patent: 4139688 (1979-02-01), Dixon
patent: 4180633 (1979-12-01), Dixon
patent: 4229551 (1980-10-01), Straub et al.

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