Polyamines with imide groups
US3998904A · kind A · utility
9Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1975 |
| Grant date | Dec 21, 1976 |
| Priority date | — |
| Expiry date | May 20, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L63/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyamines possessing imide groups are obtained by heating at least one unsaturated polyimide of the general formula: ##STR1## WITH AT LEAST ONE POLYAMINE OF THE GENERAL FORMULA: EQU Z(NH.sub.2).sub.b In which a and b each independently represents a number ranging from 2 to 6, Y represents an organic radical of valency a and Z represents an organic radical of valency b, in amounts such that the ratio of the number of NH.sub.2 groups introduced by the polyamine to the number of imide groups introduced by the polyimide is greater than 1 and at most equal to 5. These polyamines are useful for curing epoxy resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.