Polyurethane elastomers having improved physical properties and a process for the production thereof
US7511111B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2006 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Mar 14, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyol composition having a number average molecular weight of from about 1,000 to about3,000 Daltons is made up of (1) at least 55% by weight of a low monol polyoxypropylene polyol having a number average molecular weight of from about 1,000 to 12,000 Da and a degree of unsaturation less than or equal to 0.02 meq/g and (2) no more than 45% by weight of a polyol having a number average molecular weight of from about 400 to about 1,000 Da and a polydispersity index greater than1.1. This polyol composition is reacted with a diisocyanate, a polyisocyanate, an isocyanate-terminated prepolymer or an isocyanate-terminated quasi-prepolymer to produce polyurethanes, particularly, polyurethane elastomers having good physical and mechanical properties. Any of the known processes for producing polyurethanes, particularly, elastomers, including one-shot processes, may be used to produce polyurethanes in accordance with the present invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.