Preparation of suspensions of maleamic acids
US3983100A · kind A · utility
1Cited by
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11Claims
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Key dates
| Filing date | Feb 4, 1975 |
| Grant date | Sep 28, 1976 |
| Priority date | — |
| Expiry date | Feb 4, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B56/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A suspension of a maleamic acid is provided by reacting maleic anhydride with an appropriate diprimary diamine in an organic diluent in the presence of a tertiary amine. The suspension has a low viscosity and the maleamic acid can readily be recovered from it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.