Preparation of polymaleic acids from maleic anhydride in the pre

Details Preparation of polymaleic acids from maleic anhydride in the pre Preparation of polymaleic acids from maleic anhydride in the pre

1979-08-31

1981-04-07

Hamrock, William F.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526271, C08F 430, C08F 3402, C08F12204, C08F22204

Patent

active

042607248

ABSTRACT:
An improved process for the preparation of polymaleic acids having molecular weights of from 200 to 1,500, by polymerizing maleic anhydride in acetic anhydride in the presence of from 0.2 to 0.5 mole of hydrogen peroxide per mole of maleic anhydride, at from 80.degree. to 140.degree. C., and builders and encrustation inhibitors comprising the polymaleic acids prepared by the said process, for use in detergents.

REFERENCES:
patent: 3557065 (1971-01-01), Blumberg et al.
patent: 3708436 (1973-01-01), Thompson et al.

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