Post treatment of flexible polyurethane foam with organic siloxanes for increasing the water absorbency and penetration
US4128512A · kind A · utility
0Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1977 |
| Grant date | Dec 5, 1978 |
| Priority date | — |
| Expiry date | Oct 26, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/905
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The instant invention is directed to the post treatment of flexible polyurethane foams. It has been found that the water absorbency and penetration of flexible polyurethane foams can be enhanced by washing and/or impregnating the foam with an aqueous solution of specified organic siloxane surfactants and allowing the treated foam to dry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.