Environmentally friendly aqueous architectural coating compositions
US6384132B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1999 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Apr 5, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/932
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An environmentally friendly stable aqueous optionally structured water-resistant architectural coating composition (especially a paint) containing a film-forming binder polymer composed of a starch modified by the presence of carboxylic acid or inorganic carboxylate groups and bonded (probably grafted) to chains of copolymerized mono-ethylenically unsaturated monomers (e.g. “acrylic”, “vinyl” or “styrenic” copolymers) permitting a stable aqueous dispersion of the binder polymer to be made which retains good water-resistance in the dried paint. The modified starch allows paints to be made with less dependence on materials obtained from non-renewable resources while retaining a low water-sensitivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.