Thermoplastic polyurethane-polymer compositions and their preparation
US3987012A · kind A · utility
15Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 18, 1975 |
| Grant date | Oct 19, 1976 |
| Priority date | — |
| Expiry date | Feb 18, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/6594
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Thermoplastic polyurethane-polymer compositions having improved elastic properties are prepared by reacting hydroxylated diene polymers with diisocyanates in the presence of about 10 to 50% of a diamine, based on the total weight of hydroxyl-terminated diene polymer and diamine, said diamine being a mixture of disecondary diamines and secondary-tertiary diamines and said mixture comprising 1 to 10% secondary-tertiary diamines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.