Process of preparing copolymer of lower carboxylic acid and este

Details Process of preparing copolymer of lower carboxylic acid and este Process of preparing copolymer of lower carboxylic acid and este

1981-07-29

1983-09-13

Wong, Jr., Harry

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524389, 526 75, 526317, 528271, C08F 2006, C08K 505

Patent

active

044043090

ABSTRACT:
A "one pot" process is taught for the preparation of a water-soluble interpolymer starting with acrylic acid or methacrylic acid or mixtures thereof, and a lower aliphatic alcohol. The process comprises concurrently converting the lower carboxylic acid to an ester, and polymerizing reactants and reaction products under reflux conditions in the copresence of a strongly acid esterification catalyst and a free radical initiator for the polymerization; and, recovering the copolymer. In the reaction mixture there is simultaneous formation (i) of water, the removal of which determines the amount of ester formed, and (ii) of polymer. The initiator survives the strongly acid esterification catalyst, and polymerization is not adversely affected by the formation of water and the presence of the esterification catalyst, despite elevated temperature conditions.

REFERENCES:
patent: 3005785 (1961-10-01), Jones et al.
patent: 3151869 (1964-10-01), Butcher
patent: 3531133 (1970-09-01), Shusley
patent: 4052502 (1977-10-01), Clark
patent: 4210702 (1980-07-01), Dalibor
patent: 4301266 (1981-11-01), Muenster et al.

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