Production of polyurethane resins using as active hydrogen material a stable dispersion of ionic polyisocyanate-polyaddition products in hydroxyl containing compounds as a dispersing agent
US4147680A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1976 |
| Grant date | Apr 3, 1979 |
| Priority date | — |
| Expiry date | Nov 10, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S524/923
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to the production of polyurethane resins and foams from stable dispersions of ionic polyisocyanate-polyaddition products in a hydroxyl containing compound as dispersing agent which are formed by the process which comprises reacting: PA1 (1) organic polyisocyanate with PA1 (2) compounds having primary and/or secondary amino grops and/or primary hydroxyl groups in PA1 (3) compounds having at least one hydroxyl group, With the proviso that compounds (3) have secondary hydroxyl groups if compounds with primary hydroxyl groups are used as compound (2), and further characterized in that at least one of the components (1) or (2) has groups which are ionic and/or capable of salt formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.