04458040 is referenced by 19 patents and cites 5 patents.

Disclosed is an aqueous coating resin composition to be applied to a metal substrate, particularly an inner surface of a metal can or can closure on which an undercoating layer is formed. This coating composition comprises an aqueous dispersion of a self-emulsifiable resin composition being obtained by neutralizing a partial reaction product of (A) an acrylic resin with (B) an epoxy resin, with ammonia or an amine selected from the group consisting of alkylamine, alcohol amines and morpholine in an amount sufficient to maintain the pH value of the composition between 5 and 11, said acrylic resin (A) being an alkali neutralizable acrylic resin having a number average molecular weight of from 10,000 to 100,000, which consists of 12 to 30% by weight of acrylic acid or methacrylic acid and 70 to 88% by weight of at least one member selected from the group consisting of styrene, methylstyrene, vinyltoluene and alkyl esters of acrylic acid and methacrylic acid having 1 to 8 carbon atoms in the alkyl group, said epoxy resin (B) being an aromatic epoxy resin having 1.1 to 2.0 epoxy groups on the average in one molecule and a number average molecular weight of at least 1,400, said partial reaction product having excess carboxyl groups in an amount sufficient to maintain the acid value of the self-emulsifiable resin composition between 30 and 200, and excess oxirane group in an amount such that the residual ratio of the oxirane content (R) is within 5 to 95%. This coating composition is excellent in the storage stability owing to the presence of excess carboxyl groups and provides a self-crosslinked coating excellent in the adhesion, processability, flavor retaining property and resistance to boiling water owing to the presence of excess oxirane groups.

Title
Aqueous coating resin composition
Application Number
99324
Publication Number
4458040
Application Date
October 18, 1982
Publication Date
July 3, 1984
Inventor
Shinya Otsuka
Yokohama
JP
Hisashi Hotta
Yokohama
JP
Kiyoshi Okugami
Hatoyamamura
JP
Yasuo Yoshimura
Tokorozawa
JP
Tadashi Kuno
Tokorozawa
JP
Hiroo Suzuki
Kyoto
JP
Agent
Sherman & Shalloway
Assignee
Toyo Seikan Kaisha
JP
Toyo Ink Manufacturing Co
JP
IPC
C08L 63/10
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