Claims
- 1. A coating composition comprising a first acrylic resin, a second acrylic resin, a polyepoxy compound and a phosphorus-containing compound,
- said first acrylic resin being a basic tertiary amino group-containing acrylic resin, said second acrylic resin being a carboxyl group-containing acrylic resin obtained by copolymerizing 0.5 to 20% by weight of a C.sub.3 -C.sub.6 unsaturated aliphatic monobasic or dibasic acid with 99.5 to 80% by weight of at least one copolymerizable other vinyl monomer selected from the group consisting of C.sub.1 -C.sub.24 alkyl or cycloalkyl esters of acrylic or methacrylic acid, hydroxy-C.sub.1 -C.sub.24 alkyl esters of acrylic or methacrylic acid, aromatic vinyl compound, vinyl acetate, acrylonitrile and methacrylonitrile, said phosphorus-containing compound being selected from the group consisting of phosphorus-containing inorganic acids, orthophosphoric acid esters, phosphorus acid esters, phosphonic acid esters, acid phosphoric acid esters and polyphosphoric acid compounds,
- the relative amounts of said first acrylic resin and said polyepoxy compound being such that the proportion of epoxy groups in the polyepoxy compound is about 0.5 to about 2 equivalents per equivalent of the combined amount of carboxyl and tertiary amino group in the first acrylic resin, the amount of the second acrylic resin being about 2 to 40 parts by weight calculated as nonvolatile matter per 100 parts by weight of the first acrylic resin calculated as nonvolatile matter, and the amount of the phosphorus-containing compound being about 1 to about 10 parts by weight per 100 parts by weight of the first acrylic resin calculated as nonvolatile matter.
- 2. A coating composition according to claim 1 wherein said carboxyl group-containing acrylic resin has a weight average molecular weight in the range of about 8,000 to about 50,000.
- 3. A coating composition according to claim 1 wherein said carboxyl group-containing acrylic resin has a weight average molecular weight in the range of about 10,000 to about 30,000.
- 4. A coating composition according to claim 1 wherein said polyepoxy compound is a sorbitol polyglycidyl ether.
Priority Claims (2)
Number |
Date |
Country |
Kind |
61-54358 |
Mar 1986 |
JPX |
|
62-14626 |
Jan 1987 |
JPX |
|
Parent Case Info
This application is a division of application Ser. No. 023,352 filed Mar. 9, 1987, now abandoned.
US Referenced Citations (3)
Foreign Referenced Citations (3)
Number |
Date |
Country |
3429379 |
Feb 1985 |
DEX |
57-70161 |
Apr 1982 |
JPX |
60-730656 |
Jul 1985 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
23352 |
Mar 1987 |
|