Novel process for the preparation of amine-terminated compounds
US5066824A · kind A · utility
7Cited by
4References
8Claims
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Key dates
| Filing date | Aug 3, 1990 |
| Grant date | Nov 19, 1991 |
| Priority date | — |
| Expiry date | Aug 3, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/3322
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is directed to a process for preparing amine terminated compounds by reacting a polyfunctional acetoacetic acid ester with either ammonia or an organic compound which contains one or more primary amino groups in the presence of a solvent and an acidic catalyst selected from the group consisting of (i) boron trifuloride etherate and (ii) organic acids having pKa values of from 0.1 to 0.8 with the proviso that if the primary amino group containing compound contains no aromatically bound amino groups, the pKa of said organic acid is from 0.1 to less than 0.7.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.