Produits Chimiques Ugine Kuhlmann

Michel Demarcq

Joseph Sleziona

Marie-Christine Daude-Lagrave

Michel Bakes

Novel bicyclic phosphorus derivatives of 2,2-di(hydroxymethyl)-3-bromopropanol having the formula ##STR1## WHERE X IS ZERO OR ONE, NOVEL POLYPHOSPHONATE DERIVATIVES OF THE PHOSPHITE DERIVATIVES OBTAINED BY Michaelis-Arbuzov condensation and other processes; and processes for preparing such novel compounds, the bicyclic derivatives being useful as plastic stabilizers, fireproofing agents and intermediates and the polyphosphonates being useful as fireproofing agents for polymers and textiles.

Phosphorus derivatives of pentaerythritol monobromohydrin

Phosphorus-containing activators for percompounds, the activators being tris(acetoxymethyl) phosphine oxide and its precursors including tris(acetoxymethyl) phosphine and tetrakis(acetoxymethyl) phosphonium compounds, together with the use of such activators with percompounds for oxidizing or bleaching such as in bleaching fibers, oils, fats, and waxes, cosmetological treatment of hair and skin, metallic surface passivation, and purification, disinfection and sterilization techniques, the use of such activators providing more rapid action at a given temperature or equal activity at a lower temperature.

Phosphorus activators for percompounds

This invention relates to new products comprising at least one isomer of polyfluorinated-chain phosphine oxide with the general formula (I):

Phosphine oxides having polyfluorinated-chain and their preparation

New process of alcoholysis or phenolysis of P.sub.2 S.sub.5 in the presence of a catalyst having one of the following structures:

Accelerated process of alcoholysis or phenolysis of phosporus

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.

Processes for neutralizing 2,3-dibromopropanol phosphoric acid esters

Phosphoric esters of polyfluorinated alcohols are disclosed comprising at least one isomer of phosphorous esters of polyfluorinated alcohols, or one of the derivatives thereof, said esters and derivatives thereof corresponding to the general formula: ##STR1## said two isomers corresponding to formulae (II) and (III): ##STR2## wherein C.sub.n F.sub.2n.sub.+1 is a perfluorinated aliphatic chain, n is an integer from 2 to 18, X and Y are the same or different and are each a halogen atom, a hydroxy radical, the group OM in which M is a metallic equivalent, or an alkoxy, chloroalkoxy, hydroxypolyalkylenoxy, aryloxy, or --NZZ' group in which Z and Z' are the same or different and are each a hydrogen atom or an alkyl, cycloalkyl or aryl group. The preparation of phosphoric esters having the general formula (I) and mixtures of the isomers (II) and (III) thereof are also disclosed.

Phosphoric esters of polyfluorinated alcohols, and their preparation

New monoesters of phosphoric acid with polyfluorinated glycols having the formulas

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Lyon, France

Michel Demarcq