Processes for neutralizing 2,3-dibromopropanol phosphoric acid esters contained in tris(2,3-dibromo-1-propyl) phosphate
AssigneeProduits Chimiques Ugine Kuhlmann
InventorMichel Demarcq
Life of this patent
Estimating the term…
Abstract
Processes for the neutralization of tris(2,3-dibromo-1-propyl) phosphate containing certain quantities of phosphoric acidity, and possibly halohydric acidity, which processes comprise heating the phosphate with at least one carbon-containing orthoester, the tris(2,3-dibromo-1-propyl) phosphate so produced being adapted for use as a flame- or fireproofing agent in plastics, synthetic fibers, and paints.
Claims9
A process for neutralizing tris(2,3-dibromo-1-propyl) phosphate containing phosphoric acid acid esters of dibromopropanol alone or with hydrohalic acidity, which comprises heating the phosphate with at least one carbon-containing orthoester having the formula
- Z--C(OY).sub.3
- where Z is a hydrogen atom, a methyl or phenyl radical or an OY group and Y is a saturated aliphatic radical containing up to five carbon atoms or a 2,3-dibromo-1-propyl group.
Dependencies are inferred from the claim text.