Polyisocyanurate polymers, dispersions, and cellular and non-cellular polyurethane products prepared therefrom
US4359550A · kind A · utility
20Cited by
12References
18Claims
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 the polymerization of organic polyisocyanates in organic solvents employing trimerization catalysts. After deactivation of the catalysts and removal of the solvents, these polymers may be dispersed in polyols which are employed for the preparation of cellular and non-cellular polyurethane products displaying improved load bearing properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.