Method of preparing polyurethane foams using imidazolines as catalysts
US4393149A · kind A · utility
0Cited by
7References
4Claims
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Key dates
| Filing date | Mar 30, 1982 |
| Grant date | Jul 12, 1983 |
| Priority date | — |
| Expiry date | Mar 30, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/2027
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of catalyzing the curing of polyurethane foams formed by reacting a polyol with a diisocyanate in the presence of a blowing agent and a catalyst comprising using as the catalyst a compound of the formula ##STR1## where R can be hydrogen, methyl, ethyl or R.sup.4 CO.sub.2 CH.sub.2 --; R.sup.1 can be hydrogen, methyl, ethyl or R.sup.4 CO.sub.2 CH.sub.2 --; R.sup.2 can be hydrogen or an alkyl group of 1-3 carbon atoms; R.sup.3 can be alkyl of 1-4 carbon atoms or phenyl; and R.sup.4 can be hydrogen, alkyl or alkenyl of 1-17 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.