Controlling the rate of diamine curing agents in polyurethane cements
US4554299A · kind A · utility
11Cited by
3References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1985 |
| Grant date | Nov 19, 1985 |
| Priority date | — |
| Expiry date | Apr 12, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31529
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for preparing a polyurethane which has good long term flexibility, solvent resistance and resistance to hydrolysis, said method comprising mixing three components just prior to curing said components comprising a prepolymer solution, a cement solution and a crosslinking solution, said crosslinking solution comprising a solvent, an aromatic diamine and the ketimine of an aliphatic diamine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.