Polyurethanes prepared from dispersions or solutions of cholesterol or cholestanol-containing polymers in a polyol
US4745136A · kind A · utility
41Cited by
1References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1987 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Jul 14, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A solution or colloidal dispersion of a polymer of an ethylenically unsaturated steroid derivative in an active hydrogen-containing compound is claimed. The polymer provides improved physical properties to a polyurethane made by reacting the solution or dispersion with an polyisocyanate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.