Polyurethane foam containing flame retardant blend of non-oligomeric and oligomeric flame retardants
US7288577B1 · kind B1 · utility
4Cited by
13References
1Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 9, 1999 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Sep 9, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/906
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyurethane foam can be flame retarded by the incorporation therein of a flame retardant blend that comprises: (a) a non-oligomeric non-halogenated organophosphorus flame retardant (e.g., a phosphate ester) that is adapted for use in a polyurethane foam formulation; and (b) an oligomeric organophosphorus flame retardant (e.g., a phosphate ester) having a phosphorus content of no less than about 10%, by weight, and at least three phosphate ester units therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.