Stable, liquid solutions of isocyanurate-polyisocyanates containing amide and/or acylurea groups
US3970600A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1975 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | Jan 16, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/791
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Stable, liquid, homogeneous solutions of isocyanurate-polyisocyanates containing amide and/or acylurea groups in monomeric diisocyanates and/or polyisocyanates which are free from amide, acylurea and/or isocyanurate groups, are obtained by reacting polybasic carboxylic acids with diisocyanates and/or polyisocyanates to give diisocyanates and/or polyisocyanates containing amide groups and/or acylurea groups, converting the diisocyanates and/or polyisocyanates containing amide and/or acylurea groups by trimerization and, optionally, polymerization, into isocyanurate-polyisocyanates containing amide and/or acylurea groups, and mixing the products with monomeric diisocyanates and/or polyisocyanates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.