Powder coating composition
US7652110B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2008 |
| Grant date | Jan 26, 2010 |
| Priority date | — |
| Expiry date | Oct 10, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/29
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The claimed invention relates to a powder coating composition containing a fluorinated copolymer (X) having a glass transition point of at least 50° C. and a number average molecular weight of from 10,000 to 22,000, and a curing agent (Y), wherein the fluorinated copolymer (X) is a copolymer obtained by polymerization of a monomer mixture containing (A) from 45 to 55 mol % of chlorotrifluoroethylene and/or tetrafluoroethylene, (B) from 2 to 40 mol % of a vinyl ether which has a C4 or 5 alkyl group containing a tertiary carbon atom, (C) from 5 to 20 mol % of a vinyl ether having a crosslinkable functional group, and (E) from 1 to 32 mol % of a vinyl ester which has a C3-5 alkyl group containing a tertiary or higher carbon atom, wherein the total content of (B) and (E) is from 30 to 50 mol %, and the curing agent (Y) is reactive with the crosslinkable functional group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.