Poly-N,N-hydroxyalkylamides of polybasic carboxylic acids and a process for the production thereof
US4493909A · kind A · utility
10Cited by
4References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 7, 1982 |
| Grant date | Jan 15, 1985 |
| Priority date | — |
| Expiry date | Jun 7, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D307/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A polycarboxylic acid alkyl or aryl ester corresponding to the formula ##STR1## is reacted with a dialkanolamine corresponding to the formula EQU HN--A--OH).sub.2 at a temperature from 50.degree. to 200.degree. C. The alcohol ROH formed during this reaction is removed from the reaction mixture and the product recovered corresponds to the formula ##STR2## in which the radicals n, X, A and R are as defined herein. The thus-produced poly-N,N-hydroxyalkylamides are particularly useful as cell-opening materials in the production of elastic polyurethane foams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.