Blends of secondary alkyl aromatic diamines and polyhydric alcohols as curing agents in polyurethane manufacture
US4720536A · kind A · utility
14Cited by
7References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1986 |
| Grant date | Jan 19, 1988 |
| Priority date | — |
| Expiry date | Jun 6, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Urethane prepolymers cured with a blend of an aromatic alkyl diamine and a polyhydric alcohol having more than two hydroxyl groups show excellent compression set and tensile properties. Ratios of diamine to alcohol in the blend, expressed as equivalents, may vary from 1:1 to 19:1, with optimum properties in the elastomer often resulting from blends with the ratio 2:1 to 4:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.