Polyurethane elastomers based on alcohol-modified diisocyanate
US4080314A · kind A · utility
14Cited by
4References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1976 |
| Grant date | Mar 21, 1978 |
| Priority date | — |
| Expiry date | Mar 11, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/8064
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The processing temperatures of thermoplastic polyurethane elastomers are reduced, and the extrudability and sensitivity to shear and moisture are improved, by employing as the diisocyanate, in the preparation of said elastomers, the product obtained by reacting 4,4'-methylenebis(phenyl isocyanate) with a monohydric aliphatic alcohol. Use of the latter also counteracts batch-to-batch variations in reactivity of 4,4'-methylenebis(phenyl isocyanate).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.