Thermoplastic polyurethane resin from p-phenylene diisocyanate, a poly(hexamethylene carbonate) polyol, and a short chain polyol
US5066762A · kind A · utility
55Cited by
9References
20Claims
0Family size
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Key dates
| Filing date | Feb 27, 1990 |
| Grant date | Nov 19, 1991 |
| Priority date | — |
| Expiry date | Feb 27, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/7614
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermoplastic polyurethane resin is prepared by the reaction of PA1 (A) p-phenylene diisocyanate, PA1 (B) a hydroxyl terminated poly(hexamethylene carbonate) polyol having a molecular weight of 850 to 5000 and PA1 (C) a short chain polyol having 2 to 10 carbon atoms as the chain extending agent, the molar ratio of (B) : (C) being 1:2 to 1:0.05, and the molar ratio of isocyanate groups : total active hydrogen groups being 0.93:1 to 1.20:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.