Polyurethane prepared from diamine and prepolymer
US4365051A · kind A · utility
36Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1981 |
| Grant date | Dec 21, 1982 |
| Priority date | — |
| Expiry date | Apr 3, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyurethane prepared by reacting specifically identified substituted aromatic diamines with isocyanate-terminated prepolymer. Prepolymer is prepared by reacting polyisocyanate with polymeric polyol. Diamines are required to be selected from specified substituted butylbenzoates, benzonitriles or benzoates. The diamine curative is taught to enhance the processing of the prepolymer/diamine mixture for commercial application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.