Waterborne mid-coat paint composition
US9127185B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 3, 2012 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Apr 3, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L71/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Composition comprising a polyester resin (A) made waterborne by adding 7-20 mass %, based on resin solids content of (A), of (a) a C1-3 alkoxy group-containing glycol monoalkyl ether to a polyester resin of resin acid value 25-35 mgKOH/g and neutralizing with a secondary amine and/or tertiary amine; a melamine resin (B) comprising methylated melamine resin and methyl/butyl mixed alkylated melamine resin, the content ratio based on resin solids content by mass of the methylated melamine resin to the methyl/butyl mixed alkylated melamine resin from 50/50 to 90/10, and the content ratio based on resin solids content by mass of component (A) to component (B) is 70/30 to 90/10, and a polypropylene glycol (C) comprising a number average molecular weight between 400 and 1,200, and in a mass percentage between 1 and 10 mass % in terms of the combined resin solids contents by mass of component (A) and component (B).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.