Process for producing polyurethane foam
US4923904A · kind A · utility
13Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1988 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Dec 22, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0016
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for producing a polyurethane foam from a foam raw material containing polyols, organic isocyanates, catalysts and blowing agents, which comprises using as the polyols a high-molecular weight polyol having a hydroxyl number lower than 100 and a low-molecular weight polyol having a hydroxyl number higher than 200 which are mixed at a ratio of 4:6 to 6:4 (by weight), and also using as the catalysts a tertiary amine alone. Polyurethane forms having good buckling performance can be obtained by the process and they are expected to be useful as a packaging material, shock-absorbing material, heat-insulating material, and so on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.