Preparation of linear, basic polymer powders

Details Preparation of linear, basic polymer powders Preparation of linear, basic polymer powders

1985-11-25

1986-11-18

Schofer, Joseph L.

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

Synthetic resins

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

5253282, C08F 800

Patent

active

046236996

ABSTRACT:
Linear, basic polymer powders which contain units of the formula ##STR1## and have a Fikentscher K value of from 10 to 200 are prepared by eliminating the formyl groups from N-vinylformamide polymer powders with a gaseous hydrogen halide in the presence of not more than 5% by weight, based on the polymer used, of water.

REFERENCES:
patent: 4238579 (1980-12-01), Leonard, Jr. et al.
patent: 4444667 (1984-04-01), Burkert et al.
patent: 4499232 (1985-02-01), Engelhardt et al.

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