Polyurethane solutions
US4024307A · kind A · utility
7Cited by
3References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1975 |
| Grant date | May 17, 1977 |
| Priority date | — |
| Expiry date | Feb 24, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2148
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for the production of polyurethane solutions by reaction of a diisocyanate with a mixture of a glycol and a polymer bearing terminal hydroxy groups in a solvent medium under certain prescribed conditions. The resulting polyurethane solutions are especially valuable as impregnants or coating agents for textile substrates, for example in the preparation of a microporous synthetic leather.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.