Polyurethanes made using mixtures of tertiary amine compounds and lewis acids as catalysts
US9969837B2 · kind B2 · utility
2Cited by
5References
11Claims
0Family size
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Key dates
| Filing date | Aug 29, 2012 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Aug 29, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/797
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyisocyanate-based polymers are formed by curing a reaction mixture containing at least one polyisocyanate and at least one isocyanate-reactive compound having at least two isocyanate-reactive groups in the presence of a tertiary amine catalyst having a molecular weight of up to 300 and from 0.01 to 1.0 mole per mole of the tertiary amine compound(s) of a non-protic, non-catalytic, metal-containing Lewis acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.