Aqueous polyurethane dispersions made from hydroxymethyl containing polyester polyols derived from fatty acids
US7928161B2 · kind B2 · utility
4Cited by
25References
20Claims
0Family size
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Key dates
| Filing date | Oct 24, 2005 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Jan 2, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/4288
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymer dispersions are prepared by reaction of a polyisocyanate and a hydroxylmethyl containing polyester polyol derived from a fatty acid to form a prepolymer, dispersing the prepolymer in an aqueous phase and then curing the prepolymer to form solid particle particles. The prepolymers can be prepared having isocyanate, hydroxyl, or a variety of other reactive functional groups. The dispersions are useful in a variety of coating, sealant, adhesive and elastomer applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.