Polyurethane/urea heat-cured and moisture-cured elastomers with improved physical properties
US5696221A · kind A · utility
11Cited by
16References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1996 |
| Grant date | Dec 9, 1997 |
| Priority date | — |
| Expiry date | Jul 15, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/4866
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Elastomers with improved physical properties, particularly hardness and rebound, may be prepared by the diamine chain extension or moisture cure of low isocyanate group content, toluene diisocyanate-based prepolymers prepared from a polyol component comprising a high molecular weight, low unsaturation polyoxypropylene diol and a low molecular weight diol. The elastomers are useful for applications such as rollers and other applications where hardness and rebound are important.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.