Rhodia Chimie

G&eacute;rald Guichard

Philippe Olier

Yves Giraud

G&eacute;rard Mignani

Ian Hawkins

The invention concerns a lubricating composition, in the form of an oil-in-water emulsion, based on siioxane and not releasing hydrogen comprising: (a) a polydiorganosiloxane oil non-reactive to the lubricating properties having a dynamic viscosity of the order of 5.10 to 30.10 Pa.s at 25&deg; C.; (b) a polyorganosiloxane resin bearing, before emulsification, condensable hydroxyl substituents and comprising before emulsification at least two syloxyl units selected among those of formula (R ) SiO (M); (R ) SiO (D); R SiO (T) and SiO (Q), one at least of said units being a T or Q unit, formulae wherein: R represents a monovalent organic substituent, the average number per molecule of organic radicals R for a silicon atom ranging between 1 and 2; and said resin having a weight content of hydroxyl substituents ranging between 0.1 and 10 wt. %, and, preferably between 0.2 and 5 wt. %; (c) a crosslinking agent soluble in the silicone phase comprising at least two functions capable of reacting with the polyorganosiloxane resin (b); a condensation catalyst capable of catalysing the reaction of constituent (b) with constituent (c); (e) a surfactant; and (f) water.

Lubricating composition based on siloxane, not releasing hydrogen, preparation method and use thereof

A functionalized silicone with perfluorinated polyorganosiloxanes (POS) R is used to produce coatings with low surface energy and improved adherence to supports. The compositions include a group POS A bearing, per molecule, bis-perfluoromalonate grafts Gf, functional radicals Fa of the amine (HALS) f , epoxy f , (poly)ether f , carboxy f type, and optionally alkyl groups G . The invention is useful for producing soil release coatings for textiles.

Growing community of inventors

Givors, France

Gérald Guichard

Growing community of inventors

Givors, France

G&eacute;rald Guichard

Gérald Guichard