Preparation of urethane elastomers from epoxy resin, polyols and polyisocyanates using a catalyst composition of an organometal salt with either nitrogen or phosphorus compounds
US4118373A · kind A · utility
6Cited by
4References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 4, 1977 |
| Grant date | Oct 3, 1978 |
| Priority date | — |
| Expiry date | May 4, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L75/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Elastomers are prepared from a mixture comprising a 1600 equivalent weight polyether polyol such as a glycerine initiated polyoxypropylene glycol end-capped with ethylene oxide, a diol such as diethylene glycol, a liquid polyepoxide such as the diglycidyl ether of bisphenol A and a catalyst mixture containing a quaternary ammonium or phosphonium salt and an organometal salt of the metal tin or lead such as tetrabutyl ammonium bromide and lead octoate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.