Polyurethane elastomer gels
US6908979B2 · kind B2 · utility
13Cited by
26References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 18, 2003 |
| Grant date | Jun 21, 2005 |
| Priority date | — |
| Expiry date | Nov 18, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2220/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyurethane gels, a reaction system for preparing the gels, and a process for producing polyurethane gels. The reaction system comprises a polyisocyanate composition and an isocyanate-reactive composition comprising a relatively high molecular weight mono-ol and a relatively low molecular weight polyol having a nominal isocyanate-reactive functionality of at least 3. The gels do not require the use of plasticizers. The reaction system and process offer a surprising combination of long working time and rapid cure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.