Silicone-ester powder coating compositions
US4683271A · kind A · utility
14Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1986 |
| Grant date | Jul 28, 1987 |
| Priority date | — |
| Expiry date | Jun 2, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D183/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
New siloxane-esters, useful as powder coating resins, are prepared by random condensation polymerization of a hindered glycol and a hydroxy functional silicone having about two ##STR1## groups per molecule wherein R is lower alkyl or phenyl groups and the remaining silicone valences form ring-structured siloxanes. Improved powder properties, including tack temperatures of 150.degree. F. to 220.degree. F., are believed to result in part from the hindered glycols especially those having carboxylic functionality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.