N,N,N',N'-Tetramethyl-.alpha..omega.-polymethlenediamines as catalysts for the preparation of urethane foams
US4212952A · kind A · utility
4Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1978 |
| Grant date | Jul 15, 1980 |
| Priority date | — |
| Expiry date | Dec 21, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/1808
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparation of a urethane foam which comprises reacting an aromatic polyisocyanate with a polyol in the presence of a blowing agent and a catalytic amount of a compound of the formula EQU (CH.sub.3).sub.2 NCH.sub.2 CH.sub.2 (CH.sub.2).sub.n CH.sub.2 CH.sub.2 N(CH.sub.3).sub.2 wherein n is 4, 3, 2, 1, or 0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.