Process for preparing an N-substituted carbamoyl-lactam compound
US4614615A · kind A · utility
Inventors
Key dates
| Filing date | Apr 15, 1985 |
| Grant date | Sep 30, 1986 |
| Priority date | — |
| Expiry date | Apr 15, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/18
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a process for preparing an N-substituted carbamoyl-lactam compound having the formula: ##STR1## by admixing a polyhydroxy compound having the formula R(OH).sub.n with a polyisocyanate having the formula OCH--R'--NCO, wherein said PA1 n has a value of at least 3, PA1 R' is a di-valent hydrocarbon group having 6-25 carbon atoms, and PA1 Y is a C.sub.3 -C.sub.14 alkylene group, and reacting the product thereof with a lactam. The n value may advantageously range from 3 to 10. The invention also relates to certain novel n-substituted carbamoyl-lactam compounds which can advantageously be used in the preparation of nylon 6 block copolymers, and are particularly useful in reaction injection molding nylon 6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.