Bisphenol-A bis(diphenyl phosphate)-based flame retardant
AssigneeAlbemarle Corporation
InventorsWilliam B. Harrod, W. Dirk Klobucar
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Abstract
Disclosed is a flame retardant comprising bisphenol A bis(diphenyl phosphate) and its dimer, the former having an HPLC determined 78 to 87 area % and an 85 to less than 90 normalized area %, the normalized area % being based on the total HPLC area % of the bisphenol A bis(diphenyl phosphate) and the dimer. The flame retardant also has a low isopropenylphenyl diphenyl phosphate and a low triphenylphosphate content.
Claims5
A flame retardant comprising a predominate amount of bisphenol A bis(diphenyl phosphate), isopropenylphenyl diphenyl phosphate in an amount not to exceed about 0.01 area % and triphenyl phosphate in an amount not to exceed about 2.5 area %, all area %'s being measured by HPLC;
- said flame retardant being a liquid at room temperature.
Dependencies are inferred from the claim text.