Rhone-poulenc Industries

Rhone-poulenc Chimie

Rhodia Chimie

Rhone-progil

Robert Violland

Jean Neel

Alain Lagasse

Christian Priou

Bernard Papillon

Alain Fau

Maurice Coudurier

Gerard Fillippi

The invention concerns the manufacturing, on an industrial scale, of multifunctional polyorganosiloxanes. The process of the invention is a (semi) continuous method of manufacturing polyorganosiloxanes with Si-alkyl and SiOR (R-alkyl) functionality, in which: 1. A dehydrogenocondensation reactor A is continuously fed with one polyorganosiloxanes with SiH, a ROR alcohol and platinum; 2. The gas formed is evacuated and recuperated continuously by eliminating the hydrogen H it contains and by recycling the ROH by condensation; 3. The polyorganosiloxanes with SiH and with SiOR derived from 1., is immediately transferred in a hydrosilylation reactor B, to recuperate finally one polyorganosiloxanes with Si-alkyl and with SiOR.

Process for the manufacture of multifunctional polyorganosiloxanes (POSs) by dehydrocondensation and hydrosilylation, and device for carrying out this process

Aqueous emulsions of crosslinkable polyaddition organopolysiloxane compositions, well adapted for the thin layer coating of flexible substrates to impart water-repellency and nonadherency thereto, comprise a first aqueous emulsion A including end-vinylated polysiloxanes, a vinylated cyclotrisiloxane, a hydroorganodiorganopolysiloxane, a polyvinyl alcohol and a polyalkylene glycol alkyl ether or alkylphenyl ether, and a second aqueous emulsion B which comprises a catalytically effective amount of a platinum group metal catalyst.

Aqueous emulsions of organopolysiloxane compositions adapted for coating

Novel linear hydrophilic polyurethane polymers are presented. The polymers provide outstanding soil-release, anti-soil redeposition and anti-static properties when applied to natural and synthetic textile substrates, especially textile substrates containing polyester fibers. These polyurethanes are particularly useful in detergent compositions.

Hydrophilic polyurethanes and their application as soil-release,

Process for preparing acrylic monomers comprising reacting, in aqueos medium, amino alkyl esters of (meth) acrylic acid with a quaternizing agent wherein the aqueous solution obtained is washed with a water-insoluble solvent and the solvent thereafter removed. The quaternized monomers prepared are directly polymerizable to high molecular weight homopolymers or copolymers useful as cationic flocculants.

Process for obtaining and product acrylic monomers useful in the

Novel polyacetal polymers are presented. The polymers provide outstanding renewable soil release, anti-soil redeposition and anti-static properties when applied to natural and synthetic textile substrates, especially textile substrates containing polyester fibers.

Polyacetal polymers and their application as soil release and anti-soil

Water-soluble polyurethanes are obtained by reacting sulfonated anionic polyesters containing about 0.8 to 2% sulfur with at least one diisocyanate to form film-forming polyurethanes which are directly soluble in water. The polyurethanes of the invention are advantageously applied in aqueous solution form as sizing for textiles and for bonding leathers.

Water-soluble polyurethanes and compositions and application thereof to

Process of preparing anionic polyurethane latexes without the addition of a foreign emulsifying surface active agent comprising rendering the basic polyester or polyether constituent of the latex intrinsically emulsifiable or dispersible in water by incorporating an anionic functional group in the chain thereof and reacting this basic constituent with a diisocyanate in order to obtain a prepolymer which is then emulsified in water. The latexes obtained are advantageously applied in coating and impregnation processes, finishing of leather, and as binders for nonwoven fabrics.

Polyurethane latexes from sulfonate prepolymer, aqueous chain extension

Novel polyacetal polymers and their application as a soil-release and

A hydrophilic polyurethane composition comprising a reaction product of:

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Lyons, France

Robert Violland