Solutions of polyisocyanate polyaddition products
US4324716A · kind A · utility
24Cited by
10References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1980 |
| Grant date | Apr 13, 1982 |
| Priority date | — |
| Expiry date | Nov 24, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L75/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to solutions of polyisocyanate polyaddition products with a solids content of from 5 to 70% by weight of PA1 A. Reaction products of PA2 (a) polyisocyanates, PA2 (b) hydrazines and/or polyamines and/or dihydrazides and/or ammonia and/or urea and/or low molecular weight polyols, PA2 (c) optionally higher molecular weight polyols and PA2 (d) optionally formaldehyde in PA1 B. polyhydric alcohols having a molecular weight of between 62 and 450.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.