Process for the preparation of polyisocyanurate dispersions and compositions prepared therefrom
US4359541A · kind A · utility
24Cited by
6References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1981 |
| Grant date | Nov 16, 1982 |
| Priority date | — |
| Expiry date | Jan 19, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/902
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyisocyanurate polymers are prepared by polymerization of polyisocyanates in organic solvents employing trimerization catalysts. The polyisocyanates are reacted with monofunctional active hydrogen compounds prior to polymerization or subsequent to the polymerization. These polymers may be dispersed in polyols for the preparation of cellular and non-cellular polyurethane products having improved physical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.