Aqueous anionic poly (urethane/urea) dispersions
US5703158A · kind A · utility
33Cited by
58References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1994 |
| Grant date | Dec 30, 1997 |
| Priority date | — |
| Expiry date | Nov 22, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31605
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Sulfonated polyester polyols and mixtures of sulfonated polyester polyols and hydroxy carboxylic acids are used to prepare improved aqueous anionic poly(urethane/urea) dispersions with a high crystallization rate, low heat activation temperature, high green strength, stability at low pH, which show good compatibility with other water based polymers and with crosslinkers. The aqueous anionic poly(urethane/urea) dispersions have high heat resistance after curing or blending with a crosslinker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.