Aqueous coating composition and a polyol for such a composition
US6429256B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2001 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Jun 22, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D175/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Aqueous coating composition, for example for use as a clear or pigmented top coat or a primer, comprising:a) a polyol or a mixture of polyols having at least two hydroxy groups per molecule and:i a content C of carboxylate- and/or carboxylic acid-functional groups andii a content S of sulfonate- and/or sulfonic acid-functional groups, andb) one or more cross-linkers capable of reacting with hydroxy groups.A Polyol having a content C of carboxylate- and/or carboxylic acid-functional groups and a content S of sulfonate- and/or sulfonic acid-functional groups, the total content C+S being between 0.09 and 0.6 mmol/gram polyol, and the ratio C/S having a value between 0.5 to 20 and a process for preparing the polyol resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.