Carboxyl-terminated polyesters for the preparation of powder coating compositions
US5596037A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1995 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | Apr 20, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/934
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Carboxyl-terminated polyesters comprising the reaction products of (a) an aliphatic hydroxyl-terminated polyester prepared from 1,4-cyclohexanedicarboxylic acid and an alcohol component comprising PA1 (1) from 10 to 100 equivalent % of a cycloaliphatic diol and PA1 (2) from 90 to 0 equivalent % of a straight or branched chain aliphatic polyol having 2 to 12 carbon atoms, with (b) an aliphatic and/or aromatic dicarboxylic acid or the corresponding anhydride, process for preparing the same and the thermosetting powder compositions based on these polyesters and polyepoxy compounds used for the production of powder varnishes and paints. These polyesters provide coatings having an excellent weatherability combined with outstanding mechanical properties, even if curing takes place at low temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.