Polyisocyanate compositions containing rigid compounds or polymers, and polyurethanes prepared therefrom
US4894403A · kind A · utility
3Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1987 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Jul 14, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2120/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyisocyanates containing dissolved or colloidally dispersed polymers containing rigid moieties are disclosed. Included among the dissolved or colloidally dispersed polymers are polymers ethylenically unsaturated polyaromatic compounds, ethylenically unsaturated benzoic acid derivatives, ethylenically unsaturated steroid derivatives, and rigid aromatic polyurethane and/or polyurea polymers. The dissolved or colloidally dispersed polymers provide substantial reinforcement and physical property improvement to polyurethane or polyurea polymers made from the polyisocyanate solution or dispersion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.