Preparation of carboxyl-containing polymers

Details Preparation of carboxyl-containing polymers Preparation of carboxyl-containing polymers

1985-09-18

1986-11-04

Michl, Paul R.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526233, C08F 2204

Patent

active

046211276

ABSTRACT:
Carboxyl-containing polymers which are water-soluble at least in the neutralized form are prepared by a method in which a monoethylenically unsaturated C.sub.3 -C.sub.5 -carboxylic acid is polymerized in the presence or absence of a carboxyl-free copolymerizable ethylenically unsaturated monomer in aqueous solution in the presence of polymerization initiator and of from 0.01 to 5% by weight, based on the monomers, of an inorganic acid of phosphorus in which the phosphorus has an oxidation state of from 1 to 4, its water-soluble salts, a water-soluble --PO(OH).sub.2 -containing compound and/or its water-soluble salts and, if required, a polymerization regulator. Virtually colorless or only slightly colored polymer solutions are obtained.

REFERENCES:
patent: 2789099 (1957-04-01), Rife
patent: 3635915 (1972-01-01), Gale
patent: 3755282 (1973-08-01), Wright
patent: 4375533 (1983-03-01), Park

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