Water-dispersable polyurethanes
US5714561A · kind A · utility
2Cited by
7References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1996 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Sep 23, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Water-dispersible polyurethane prepolymers comprising one or more organic diisocyanates; a difunctional compound having a molecular weight of from about 250 to about 10,000 which is difunctionally reactive with the organic diisocyanate and which is free of side chain polyoxyalkylene units; and a dispersion diol which is difunctionally reactive with the organic diisocyanate and which contains side chain polyoxyalkylene units. Methods of preparation of the prepolymers and their use in aqueous polyurethane dispersions are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.