Title: Water-borne coating composition made from epoxy resin, first polymeric acid, tertiary amine and second polymeric acid

Abstract: Water-borne reaction products of (a) carboxyl-functional polymers; (b) polyepoxides; and (c) tertiary amines are blended with (d) carboxyl-functional polymers having an acid number dissimilar to that of (a). The resulting products are useful as film-forming components of coating compositions which can be spray-, flow-, dip-, roller-, or electro-coated and are especially useful for spray coating the inside of two-piece tin-plated steel cans of beverages and food. The coating compositions are useful as such or can be crosslinked with crosslinking agents such as a nitrogen resin.

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Inventors: Harper, Lee R. (Media, PA)
Obetz, Judith E. (Bryn Mawr, PA)
Steinmetz, William H. (Collingswood, NJ)

Application Number: 06/369077
Filing Date: 1982-04-16
Publication_date: 1983-12-27
Assignee: Pont DU. (US)

Primary Class(es): 523/409 524/501, 523/411, 523/412
Other Classes: C08G59/12; C08G59/42; C09D5/44; C09D163/00; C08G59/00; C08K3/20; C08L63/00
US Patent Ref:

2784128	March, 1957	Schroder	523/409	Laminating composition and laminate made therefrom
2954358	September, 1960	Hurwitz	523/209	Aqueous dispersion containing acrylic acid copolymer and aliphatic polyepoxide
3492252	January, 1970	Euchner et al.	523/412	EMULSION COATING COMPRISING NEUTRALIZED LATEX OF ACIDIC POLYMER AND AN EPOXY COMPONENT
4247439	January, 1981	Matthews et al.	523/412	Water-borne coating composition made from epoxy resin, polymeric acid and tertiary amine

Other Refs: EP0006336JP52-24231

January, 1980	523/412	AQUEOUS EMULSION COATING COMPOSITION COMPRISING SELF-EMULSIFIABLE EPOXY ESTER COPOLYMER MIXTURES
February, 1977	523/412

Primary Examiner: Schofer, Joseph L.
Assistant Examiner: Sarofim N.
Attorney: Burgess, Richard H.

Claims:

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