Process for making hydrophilic polyurethane foams
US4051081A · kind A · utility
64Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1976 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Jul 15, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/905
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for making a hydrophilic polyurethane foam suitable for sponges and wiping cloths which comprises reacting an organic polyisocyanate and an organic compound having reactive hydrogen atoms in a mixture containing a blowing agent and an alkyl aryl sulphonic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.