Epoxy ester copolymer soluble in water with the aid of an amine

Details Epoxy ester copolymer soluble in water with the aid of an amine Epoxy ester copolymer soluble in water with the aid of an amine

1979-03-09

1981-01-27

Ziegler, J.

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

Synthetic resins

Ethylenically unsaturated reactant admixed with either...

260 292E, 260 293, 260 294R, 525 46, 525 49, 525488, 525510, 525523, 525533, 528111, 528112, 528115, 528119, 528297, C08L 6700

Patent

active

042476593

ABSTRACT:
Water soluble epoxy ester copolymers adapted for sanitary can use comprise an hydroxy functional epoxy ester of a polyepoxide having an average molecular weight of about 300 to about 1100 and a 1,2-epoxy equivalency of about 1.4 to about 2.0, esterified with an at least approximately stoichiometric proportion, based on epoxide functionality, of monocarboxylic acid selected from benzoic acid, C.sub.1 -C.sub.8 alkyl substituted benzoic acid, and C.sub.6 -C.sub.10 alkanoic acid, the esterification reaction being continued to provide an acid number of less than 20, this hydroxy functional epoxy ester is polyesterified with from 1.5-8%, based on the weight of the epoxy ester, of a monoethylenically unsaturated dicarboxylic acid which resists homopolymerization to an acid number of less than 20, and the polyester so obtained is copolymerized with from 15% to 70% of monoethylenic monomers, based on the copolymer, these monoethylenic monomers including carboxyl functional monomer providing an acid number of from 20-100 in the copolymer. The copolymers are dispersed in water by salt formation with an amine and aminoplast or phenoplast resin is incorporated to provide curing reactivity.

REFERENCES:
patent: 3564074 (1971-02-01), Swisher et al.
patent: 4028294 (1977-06-01), Brown et al.
patent: 4101398 (1978-07-01), Hesse et al.

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