Odor free polylactic acid modified aqueous emulsion paints free of volatile coalescing organic solvent
US7049357B2 · kind B2 · utility
2Cited by
9References
31Claims
0Family size
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Key dates
| Filing date | Apr 23, 2001 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | May 23, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An aqueous ambient dry decorative or protective coating comprising a film forming matrix polymer of an aqueous emulsion polymer of aqueous copolymerized ethylenically unsaturated monomers modified with at least 3% by weight of a low molecular weight oligomer of copolymerized hydroxy alkanoic acid having 2 to 4 carbon atoms having a number average molecular weight between 300 and 10,000 to provide a film forming binder substantially free of volatile organic coalescing solvents. Preferred oligomers are homopolymers and copolymers of polymerized lactic acid or polymerized glycolic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.