US 2003/0113462 A1 · Water-based coating composition for inner surface of can and method of coating inner surface of can

Abstract

The present invention provides an aqueous coating composition for coating the inner surface of a can obtainable by subjecting an acrylic-modified polyester resin (C) obtainable by graft polymerizing a polyester resin having ethylenic double bonds (A) that has a number average molecular weight of 2,000 to 100,000 and a hydroxyl value of 10 to 120 mgKOH/g with a polymerizable unsaturated vinyl monomer (B) that includes a carboxyl-containing polymerizable unsaturated monomer to neutralization and dispersion in an aqueous medium, wherein the aqueous coating composition contains 1 to 40 parts by weight of resole phenol resin cross-linking agent (D) based on 100 parts by weight of the acrylic-modified polyester resin (C); and a method for coating the inner surface of a can using this aqueous coating composition.

Claims9

Dependent claims

An aqueous coating composition for coating the inner surface of a can obtainable by subjecting an acrylic-modified polyester resin (C) obtainable by graft polymerizing a polyester resin having ethylenic double bonds (A) that has a number average molecular weight of 2,000 to 100,000 and a hydroxyl value of 10 to 120 mgKOH/g with a polymerizable unsaturated vinyl monomer (B) that includes a carboxyl-containing polymerizable unsaturated monomer to neutralization and dispersion in an aqueous medium,

the aqueous coating composition containing 1 to 40 parts by weight of resole phenol resin cross-linking agent (D) based on 100 parts by weight of the acrylic-modified polyester resin (C).

Dependencies are inferred from the claim text.

Facts

Application

10/275,958Filed 15 Nov 2002

Priority

JP 2001-1087976 Apr 2001

Published

19 Jun 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

C08F 289/00
Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds not provided
C08F 283/01
Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G: on to unsaturated polyesters
C09D 151/08
Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated…:…
B05D 7/227
To internal surfaces, e.g. of tubes: of containers, cans or the like

Water-based coating composition for inner surface of can and method of coating inner surface of can

Life of this patent

Water-based coating composition for inner surface of can and method of coating inner surface of can

Life of this patent

Abstract

Claims9