Method for preparing powder coating compositions having improved particle properties
US5472649A · kind A · utility
23Cited by
7References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1994 |
| Grant date | Dec 5, 1995 |
| Priority date | — |
| Expiry date | Apr 13, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J3/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of preparing a powder coating composition comprises: (a) forming a mixture comprising solid particles which include a curable resin and a cross-linking agent that is reactive with the curable resin suspended in an aqueous liquid phase comprising water, a surfactant, a stabilizer, and a promoter; (b) warming the mixture to a temperature sufficient to effect reshaping and rounding of the particles; (c) separating the particles from the liquid phase; and (d) drying the particles to form a powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.