C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
400/4217, 400/59
C08G 59/42 (2006.01) C09D 163/00 (2006.01)
Patent
CA 1117690
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, C1-C8 alkyl substituted benzoic acid, and C6-Cl0 alkanoic acid, the esterifica- tion reaction being continued to provide an arid 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 homopoly- merization 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 function- al 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 pheno- plast resin is incorporated to provide curing reactivity.
323074
Sekmakas Kazys
Shah Raj
Desoto Inc.
Fetherstonhaugh & Co.
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