Copolymer acting as thickening agent for aqueous preparations ha

Details Copolymer acting as thickening agent for aqueous preparations ha Copolymer acting as thickening agent for aqueous preparations ha

1991-01-31

1992-02-04

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526258, 526260, 526313, 526317, 5263171, 5263182, 52631841, 5263185, 5263296, 526333, C08F 2006, C08F 2608, C08F11612

Patent

active

050861425

ABSTRACT:
A copolymer is disclosed which acts as a thickening agent for aqueous preparations having a pH of more than 5.5. The copolymer is obtainable by emulsion polymerization in an aqueous medium, at a pH of 2.5 to 5, in the presence of an initiator forming free radicals, at a temperature of 60.degree. to 95.degree. C. of

REFERENCES:
patent: 4338239 (1982-07-01), Dammann
patent: 4384096 (1983-05-01), Sonnabend
patent: 4892916 (1990-01-01), Hawe

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