Flame retardant polyurethane modified polyisocyanurate
US4468481A · kind A · utility
7Cited by
14References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1982 |
| Grant date | Aug 28, 1984 |
| Priority date | — |
| Expiry date | Dec 16, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/906
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A flame retardant polyurethane-modified polyisocyanurate foam composition containing a flame retardant amount of a normally liquid flame retardant polyol ester. The polyol ester is prepared by a process comprising reacting a halogen containing anhydride of a dicarboxylic acid or a mixture of said anhydrides with 2 to about 10 moles of an aliphatic diol or mixture of diols per mole of said anhydride to obtain a substantially fully esterified halogen containing product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.