Method of producing flexible reticulated polyether polyurethane foams
US4259452A · kind A · utility
70Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 1979 |
| Grant date | Mar 31, 1981 |
| Priority date | — |
| Expiry date | May 15, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/914
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of producing flexible polyether polyurethane foams, which have a substantially skeletal reticulated structure, is disclosed. When the flexible foam is produced by reacting a polyhydroxyl compound with an organic polyisocyanate in the presence of a blowing agent by one-shot process, a catalyst and other additives, a mixture of (a) poly(oxyethylene-oxypropylene)polyether polyol containing 51 to 98% by weight of ethylene oxide component and (b) poly(oxyethylene-oxypropylene)polyether polyol containing not less than 51% by weight of propylene oxide component is used as the polyhydroxyl compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.