Process for the preparation of cyclohexanediisocyanate containing polyisocyanate prepolymers and polyurethanes having high temperature performance
US4892920A · kind A · utility
33Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1988 |
| Grant date | Jan 9, 1990 |
| Priority date | — |
| Expiry date | Nov 21, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to a polyisocyanate prepolymer for polyurethane and polyurethane/urea elastomer synthesis and to the resulting elastomer. The prepolymer is formed by reacting a cyclohexanediisocyanate with a long chain polyol under conditions such that essentially a 2:1 adduct is formed. Excess cyclohexanediisocyanate is removed prior to forming the elastomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.