Methods and compositions for preparing rigid forms with non-chlorofluorocarbon blowing agents
US5407967A · kind A · utility
5Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1994 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | May 5, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are methods and compositions for preparing rigid foams by contacting a polyisocyanate with a polyol mixture comprising PA0 (a) from about 40-95% by weight of a polyester or polyether polyol; PA0 (b) a catalytic amount of a catalyst system comprising a primary catalyst and an amino acid salt catalyst derived from sarcosine; and PA0 (c) a non-chlorofluorocarbon blowing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.