Polyester polyols and their use as a binder component in two-component polyurethane coating compositions
US6423816B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1996 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Jan 4, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D167/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to polyester polyols having a hydroxyl number of 60 to 400, which are esterification products ofa) an alcohol component containing one or more aliphatic or cycloaliphatic alcohols having at least 3 hydroxyl groups and 3 to 8 carbon atoms withb) a carboxylic acid component containing itaconic acid, maleic acid, their anhydrides and/or fumaric acid, provided that at least 10 mole % of either component a) or component b) is an aliphatic or cycloaliphatic, saturated or unsaturated monoalcohol or monocarboxylic acid having 1 to 18 carbon atoms. The present invention also relates to two-component polyurethane coating compositions containing these polyester polyols and lacquer polyisocyanates as the binder and to their use for coating substrates, in particular automotive substrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.