Isocyanate terminated prepolymers and the use thereof in a rim process
US5098984A · kind A · utility
4Cited by
17References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 15, 1990 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Jun 15, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2120/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is directed to a novel prepolymer and the use thereof in a RIM process. The prepolymer is an isocyanate terminated prepolymer having an isocyanate group content of from about 10 to about 26% by weight, and being prepared by a process comprising: PA1 (a) reacting a C.sub.1 to C.sub.5 alkyl acetoacetate, with a polyol having a molecular weight of from about 500 to about 6000, and a hydroxyl functionality of from 2 to 4, and PA1 (b) reacting the resultant product with an organic di- and/or polyisocyanate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.