Claims
- 1. An aqueous coating composition based on a cationic binder obtained by polymerization of 100 parts by weight of a monomer mixture in the presence of a polyethylenically unsaturated compound,
- said monomer mixture consisting of (a) 1-30% by weight of a hydroxy(cyclo)alkyl (meth)acrylate of which the (cyclo)alkyl group has 2-8 carbon atoms, (b) 4-45% by weight of an amino (meth)acrylate of the formula: ##STR3## wherein one of the groups R.sub.1 is a hydrocarbon group having 1-12 carbon atoms and the other group R.sub.1 is a hydrocarbon group having 1-12 carbon atoms or a hydrogen atom, or the two groups R.sub.1, together with the nitrogen atom attached thereto, form a heterocyclic group, R.sub.2 is a hydrocarbon group containing 2-12 carbon atoms and R.sub.3 is a hydrogen atom or a methyl group, (c) 0-80% by weight of a monovinyl aromatic hydrocarbon containing 8-14 carbon atoms, and (d) 0-50% by weight of a different monoethylenically unsaturated monomer containing 2-20 carbon atoms;
- said polyethylenically unsaturated compound being an epoxy group-free adduct of a bisphenol bisglycidyl ether and an ethylenically unsaturated amido amine formed from (a) a polyamine containing 1-2 primary amino groups and 1-2 secondary amino groups and (b) an ethylenically unsaturated monocarboxylic acid containing 18-24 carbon atoms, which adduct is present in an amount of 1-20 parts by weight per 100 parts by weight of the monomer mixture;
- amino groups present in said binder being at least partially neutralized with an acid.
- 2. A composition according to claim 1, wherein the hydroxy(cyclo)alkyl (meth)acrylate used in the monomer mixture is at least one member selected from the group consisting of hydroxyethyl acrylate and hydroxypropyl methacrylate.
- 3. A composition according to claim 1, wherein the monomer mixture contains 5-24% by weight of hydroxy(cyclo)alkyl (meth)acrylate.
- 4. A composition according to claim 1, wherein the amino (meth)acrylate is a (di)alkylamino (meth)acrylate of which the alkyl group(s) has (have) 1-4 carbon atoms.
- 5. A composition according to claim 1, wherein the amino (meth)acrylate is a .beta.-(di)alkylaminoethyl (meth)acrylate of which the alkyl group(s) has (have) 1-4 carbon atoms.
- 6. A composition according to claim 1, wherein the monomer mixture contains 7-35% by weight of amino (meth)acrylate.
- 7. A composition according to claim 1, wherein the monomer mixture contains 7-28% by weight of amino (meth)acrylate.
- 8. A composition according to claim 1, wherein the monovinyl aromatic hydrocarbon used in the monomer mixture has 8-10 carbon atoms.
- 9. A composition according to claim 1, wherein the monovinyl aromatic hydrocarbon used is at least one member selected from the group consisting of styrene and vinyl toluene.
- 10. A composition according to claim 1, wherein the monomer mixture contains 10-70% by weight of the monovinyl aromatic hydrocarbon.
- 11. A composition according to claim 1, wherein the monomer mixture contains 0-45% by weight of the different monoethylenically unsaturated monomer.
- 12. A composition according to claim 1, wherein the bisphenol bisglycidyl ether is the bisglycidyl ether of bis(4-hydroxyphenyl)-2,2-propane.
- 13. A composition according to claim 1, wherein the bisphenol bisglycidyl ether has an epoxy equivalent weight of 180-4000.
- 14. A composition according to claim 1, wherein the polyamine is a polyalkylene polyamine of the formula H.sub.2 N--(R.sub.2 --NH)--.sub.n R.sub.1 --NH.sub.2, wherein the group R.sub.1 and the groups R.sub.2 may be the same or different and represent an alkylene group containing 2-6 carbon atoms, and n is 1 or 2.
- 15. A composition according to claim 1, wherein the binder is obtained by polymerization of 100 parts by weight of the monomer mixture in the presence of 5-14 parts by weight of the epoxy group-free adduct.
Priority Claims (1)
Number |
Date |
Country |
Kind |
8501938 |
Jul 1985 |
NLX |
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Parent Case Info
This is a division of application Ser. No. 882,378 filed July 7, 1986.
US Referenced Citations (12)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0104683 |
Apr 1984 |
EPX |
0021404 |
Feb 1980 |
JPX |
Divisions (1)
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Number |
Date |
Country |
Parent |
882378 |
Jul 1986 |
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