Prepolymers of polyisocyanates with hydroxy-enamines or hydroxy-ketimines
US3941753A · kind A · utility
9Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1974 |
| Grant date | Mar 2, 1976 |
| Priority date | — |
| Expiry date | Nov 1, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Prepolymers having enamine or ketimine groups therein are prepared by reacting a polyisocyanate with a mono-enamine or mono-ketimine having an hydroxy group. The prepolymers may be used as mixtures with further isocyanate, which mixtures harden in the presence of water or atmospheric moisture and are useful as lacquers, casting and patching resins, and for coatings and laminates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.