Flame retardant additive composition comprising cyclic phosphonate blend and bis-phosphate ester, and polyurethane foam containing the same
US10144872B2 · kind B2 · utility
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6References
13Claims
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Key dates
| Filing date | Dec 12, 2014 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Jan 28, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/014
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There is provided herein a flame retardant additive composition comprising (a) a cyclic phosphonate mixture of (i) (5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphorinan-5-yl)methyl methyl ester of P-alkylphosphonic acid and (ii) bis[(5-ethyl-2-2-methyl-2-oxido-1,3,2-dioxaphosphorinan-5-yl)methyl]ester of P-alkyl phosphonic acid; and, (b) an aryl bisphosphate ester of the general formula (I) herein. There is also provided herein a polyurethane foam containing the flame retardant additive composition as well as articles made comprising said polyurethane foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.