Use of polyol mixtures in rigid and semi-rigid polyurethane foams
US5874484A · kind A · utility
26Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1997 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Oct 23, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0083
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a mixture of polyols for use in the preparation of polyurethane foam comprising: PA1 (i) 80-99% by weight of at least one polyether polyol and/or at least one polyester polyol; and PA1 (ii) 1-20% by weight of at least one polyolefin polyol. The invention further relates to a process for preparing polyurethane foams, using the said mixture of polyols; to polyurethane foams obtainable by such process; and to articles and composites containing the said polyurethane foams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.