Settable fluoridated copolymer in powder form, its method of production, its application in powder coatings
US5461130A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 1994 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | May 13, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D127/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides hardenable fluoridated copolymers that are prepared by (a) copolymerizing tetrafluoroethylene, vinylidene fluoride, and an allylic monomer of the formula ##STR1## wherein R is an unsaturated linear, branched, or cyclic alkyl chain having 2 to 12 carbon atoms, each of R1, R2, R3, and R4 is independently selected from the group consisting of H, CH.sub.3, CH.sub.2 CH.sub.3, OH, and CH.sub.2 OH, n is 0 or 1, and p is a value from 0 to 3, in the presence of a copolymerization initiator and in a solvent medium, and subsequently (b) extracting the copolymer from the reaction medium by precipitation in a liquid that is not a solvent of the copolymer but is miscible with the solvent of the reaction medium. The fluoridated copolymers so prepared are useful in powder form for electrostatic spray coating applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.