Tertiary amine-containing polyols prepared in a mannich condensation reaction using a mixture of alkanolamines
US4883826A · kind A · utility
60Cited by
5References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 27, 1988 |
| Grant date | Nov 28, 1989 |
| Priority date | — |
| Expiry date | Jul 27, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2115/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Mannich polyols of low viscosity and reduced reactivity are prepared by condensing a phenolic compound with formaldehyde and a mixture of diethanolamine and at least one other alkanol amine. The condensation product is the alkoxylated to form a polyol which is particularly useful in preparing rigid polyurethane foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.