Novel carboxylate catalysts for the preparation of foams characterized by polyisocyanurate, polyurethane and poly (urethane-isocyanurate) linkages
US4148980A · kind A · utility
18Cited by
3References
20Claims
0Family size
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Key dates
| Filing date | Mar 9, 1978 |
| Grant date | Apr 10, 1979 |
| Priority date | — |
| Expiry date | Mar 9, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/902
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Reaction products of certain tertiary amines, alkylene oxides and carboxylic acids have been found to be outstanding catalysts for the preparation of polyisocyanurates, polyisocyanurate foams, polyurethane foams and poly(urethane-isocyanurate) foams. Typical tertiary amines are 1,3,5-tris (N,N-dialkylaminoalkyl-5-hexahydrotriazines, pyridine and bis-(N,N-dialkylaminoalkyl) ethers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.