Production of polymaleic acid

Details Production of polymaleic acid Production of polymaleic acid

1985-03-27

1987-11-24

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

252 80, 252180, 210701, 526 89, 526219, 526227, 526229, 526240, 526271, 5263182, 560198, 560199, 560201, C07C 51347

Patent

active

047090910

ABSTRACT:
A polymer or copolymer of maleic acid is produced by neutralizing (I) maleic acid in an aqueous medium with (III) an alkali metal hydroxide or ammonia at a molar ratio of (I) to (III) in the range of 100:0 to 100:90, polymerizing (I) with a polymerization initiator, adding (III) a further amount of the alkali metal hydroxide or ammonia at a molar ratio of (I) to (III) in the range of 100:100 to 100:130 in total through the previous addition and this addition and continuing the polymerization to the complete effect.

REFERENCES:
patent: 3218298 (1965-11-01), Piganiol
patent: 3268491 (1966-08-01), Hattori et al.
patent: 3308067 (1967-03-01), Diehl
patent: 3340238 (1967-09-01), Smith et al.
patent: 3574705 (1971-04-01), Linden et al.
patent: 3634503 (1972-01-01), Bowman
patent: 3699155 (1972-10-01), Brady
patent: 4589995 (1986-05-01), Fukumoto et al.
Chemical Abstracts, vol. 86:90588a, (1977).

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