Resin Composition For Water Paint, Water Paint, And Production Method For Resin Composition For Water Paint
AssigneeDainippon Ink and Chemicals, Inc.
InventorsAtsushi Miyagaki, Haruhiko Murakami, Masahito Furo
Life of this patent
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Abstract
A resin composition for water paint, wherein the resin composition includes water and a vinyl-modified epoxy ester resin (A) which includes a fatty acid chain to which a vinyl polymer portion is combined, and the vinyl polymer portion comprises a structure which includes a carboxyl group at the terminal end represented by the general formula (I), and part of or all of the structure represented by general formula (I) is neutralized with a basic compound. (in the formula, n represents a number of 1 to 10, and R1 represents an alkylene group having 2 to 18 carbon atoms)
Claims18
A resin composition for water paint, wherein the resin composition includes water and a vinyl-modified epoxy ester resin (A) which includes a fatty acid chain to which a vinyl polymer portion is combined, and
- the vinyl polymer portion comprises a structure which includes a carboxyl group at the terminal end represented by general formula (I)
- (in the formula, n represents a number of 1 to 10, and R1 represents an alkylene group having 2 to 18 carbon atoms),
- and part of or all of the structure which includes a carboxyl group at the terminal end represented by the general formula (I) is neutralized with a basic compound.
A production method for a resin composition for water paint, which comprises:
- preparing an organic solvent solution of a vinyl-modified epoxy ester resin (A1), wherein an unsaturated fatty acid-modified epoxy ester resin is obtained by reacting a carboxyl group contained in an unsaturated fatty acid with an epoxy group or both of an epoxy group and a hydroxyl group contained in an epoxy resin, and part of or all of an unsaturated bond of the unsaturated fatty acid-modified epoxy ester resin is polymerized with a vinyl monomer (a1) which has a structure having a carboxyl group at the terminal end represented by the following general formula (I) and another vinyl monomer (a2) to form the vinyl-modified epoxy ester resin (A1)
- (in the formula, n represents a number of 1 to 10, and R1 represents an alkylene group having 2 to 18 carbon atoms);
- using a basic compound and water in addition to the organic solvent solution, conducting neutralization of part of or all of a carboxyl group of the vinyl-modified epoxy ester resin (A1) included in the organic solvent solution using the basic compound to form a neutralized product of the vinyl-modified epoxy ester resin (A1), and conducting mixing of water and the organic solvent solution which includes the neutralized product obtained from the vinyl-modified epoxy ester resin (A1) to conduct a phase-inversion emulsification of the neutralized product under water;
- and
- removing part of or all of an organic solvent included in the mixture after the phase-inversion emulsification.
Dependencies are inferred from the claim text.