Rhodia Chimie

Bluestar Silicones France Sas

Bluestar Silicones France

Rhone-poulenc Chimie

Rhodia Services

Elkem Silicones France Sas

Alain Pouchelon

Laurent Dumont

Fabrice Bohin

Catherine George

Fabienne Howe

Christian Pusineri

Francis Lafaysse

Maryline Quemin

Delphine Blanc-Magnard

Michel Feder

Sébastien Sterin

Lucile Gambut-Garel

John White

Yassine Maadadi

Olivier Loubet

Rémi Thiria

Fabio Zanandrea

Christian Mirou

Christophe Guyot

Georges Barrandon

Jean-Paul Benayoun

Bernard Dalbe

Dominique Lorenzetti

Marco Del Torto

Sean Duffy

Christiane Prebet

Marilyne Quemin

Bernard Moulin

Raymond Dubouis

Chris Street

Jean Louis Bertry

Marc Ladreyt

Dominque Canpont

Andre Plantier

Bernard Mirabel

Francois Desne

Dominique Canpont

Joachim Walz

Uwe Kaiser

Jens Heilmann

Gerard Joubert

Scott Jackson

Silicone composites subject to reticulation or reticulated, particularly for creating a coating or water-repellent and anti-adhesive film for flexible substrates such as paper or similar in the form of natural or synthetic polymer films. These compounds contain reticulating polyorganosiloxanes that have SiH units and unsaturated polyorganosiloxanes, preferably vinylated, suitable for reacting with the reticulating agent in an addition reaction and in the presence of platinum to form the reticulated anti-adhesive coating on the flexible substrate, plus at least one additive (D) to promote adhesion to it. A new liquid silicone compound can be applied without using a solvent, which is beneficial, that can be reticulated instantly to produce an anti-adhesive and/or water-repellent coating for the flexible substrate, giving very high quality reticulated silicone coatings, particularly in terms of sticking/adhering to the substrate, being harder to rub off and the anti-adhesion profile (sufficiently increase detaching force at high speed.

Cross-linkable silicone composition for the production of non-stick coatings for flexible supports and attachment promoting additive contained in this composition

The general field of the invention is that of airbags. The invention relates to a process for improving the tear strength and the combing strength of coated fabrics intended for uses in the field of inflatable bags, using a silicone composition comprising an additive consisting of a polyorganosiloxane resin (V) and a calcium carbonate. After coating the composition onto the fabric supports and curing, the coated supports not only have optimum adhesion and crease resistance properties, but also have good properties in terms of combing strength and tear strength.

Silicone composition and process that is useful for improving the tear strength and the combing strength of an inflatable bag for protecting an occupant of a vehicle

Single-component silicone elastomer compositions (SEA) are crosslinkable by polyaddition into self-adhesive state, contain at least one polyorganosiloxane (POS) including sites of ethylenic and/or acetylenic unsaturation {POS containing units &#x2550;Si&#x2014; [unsaturation]}; at least one polyorganosiloxane (POS) containing units &#x2550;Si&#x2014;H; a catalytic system including at least one metal catalyst and at least one crosslinking inhibitor; a filler; at least one adhesion promoter; optionally, at least one POS resin; optionally, at least one thermal resistance agent; and, optionally, at least one other functional additive, and are useful for gluing, assembling, sealing, e.g., joints, coatings, electrical, electronic and automobile engineering parts.

Single-component silicone elastomer compositions crosslinkable into self-adhesive state

The present invention relates to a high-performance silicone elastomer composition that is adhesive and that can be crosslinked at high temperature for the assembly of silicone-based substrates, both by platinum and peroxide catalysis, and that may lend itself to a strip conformation. The composition comprises at least one gum, one catalyst and one adhesion promoter of polyorganohydrogensiloxane type, the nature and the amount of said adhesion promoter having been chosen so that Si&#x2014;H groups are in excess following the reaction for crosslinking the composition, so as to obtain a potential surface density of covalent Si&#x2014; bonds with the silicone substrate to be bonded of at least one covalent Si&#x2014; bond per 60 nm.

Adhesive silicone elastomer composition

The general field of the invention is that of airbags. The invention relates to a process for improving the tear strength and the combing strength of coated fabrics intended for uses in the field of inflatable bags using a silicone composition comprising an additive containing a polyorganosiloxane resin (V) and a calcium carbonate. After coating the composition onto the fabric supports and curing, the coated supports not only have optimum adhesion and crease resistance properties, but also have good properties in terms of combing strength and tear strength.

The invention relates to a process for the adhesive bonding of fibrous supports using a silicone elastomer which is thermosetted by radical crosslinking using at least one peroxide. The silicone elastomer is inserted between the supports over at least a portion of the region of overlap of the supports, where the supports are held in contact in the region of overlap in an manner that prevents trapping of air at the interface between the supports. The supports containing the silicone elastomer are heated while in intimate contact to allow the adhesive bonding of the supports by crosslinking of the adhesive.

Method for bonding fibrous silicone-coated supports

This invention relates to silicon compositions particularly useful for the production of anti-fouling varnishes that can be applied to flexible or bulk supports. In particular, embodiments of the invention are directed to cross-linkable silicone composition that is cross-linkable by polyaddition and includes at least two inter-reactive polyorganosiloxane (POS) species (A) and (B) in the presence of a metal catalyst (C) in order to allow cross-linking by polyaddition; and optionally at least one particulate component (D); at least one cross-linking inhibitor (E); optionally at least one solvent (F), optionally at least one adhesion promoter (G); and optionally at least one functional additive (H) for imparting specific properties.

Anti-fouling polyaddition silicone varnish, application of this varnish to a support and support thus treated

A polyorganosiloxane composition that can be vulcanized at high temperature to a silicone elastomer, useful in the field of the manufacture of electrical wires or cables having an improved fire performance is provided. The composition includes a semi-reinforcing filler chosen from the group composed of:&#x2014;calcined kaolin powders, preferably that have undergone a chemical surface treatment;&#x2014;talc;&#x2014;calcium carbonate that may or may not have been surface-treated, for example with vinylsilanes, aminosilanes or (reactive or unreactive) silicone oils; and mixtures thereof.

Hot-vulcanizable polyorganosiloxane compositions useful particularly for manufacturing electrical cables or wires

This invention is directed to stabilizing additives that contain at least one platinum complex, with the complex including a carbene group. The stabilizing additives make it possible to improve the resistance to decomposition of silicone elastomers under high temperatures. The additive can be used in a polyorganosiloxane composition intended for the production of a silicone elastomer with either crosslinks at high temperature under the action of organic peroxides or crosslinks at ambient temperature or with heat by polyaddition reactions in the presence of a metal catalyst.

Use of a specific platinum compound in order to improve the resistance of silicon elastomers to degredation caused by very high temperatures

A hydrosilylation (polyaddition)-vulcanizing elastomer silicone composition, including (a) a vinylated polyorganosiloxane (POS), (b) at least one hydrogenated POS, (c) a platinum catalyst, (d) optionally a coupling agent, (e) optionally a mineral filler, (f) optionally a crosslinking inhibitor, and optionally a POS resin and functional additives. The composition has a dynamic viscosity between 1,000 and 7,000 mPa&#xb7;s, at 25&#xb0; C. before crosslinking and, after overall crosslinking by thermal effect has at least one of the following properties: a Shore A hardness of at least 2, a breaking strength of at least 0.5 N&#xb7;mm, and a breaking elongation of at least 50%. Also disclosed is a composite which is fully impregnated by means of a 100% bicomponent (RTV-2) silicone liquid.

Composition based on silicone oils that can be crosslinked into elastomers for the impregnation treatment of fibrous materials

A process for production of an assembly including several silicone elements crosslinked by polyaddition of &#x2261;Si&#x2014;H units onto &#x2261;Si-alkenyl (preferably &#x2261;Si-vinyl) units, the elements adhering to one another without detracting from their mechanical properties. The process includes: (I) forming (1coating) a silicone element (i) with a liquid silicone preparation (i) containing polyorganosiloxanes (POS) A with &#x2261;Si-vinyl units, (POS) B with &#x2261;Si&#x2014;H units, a platinum catalyst C; (II) crosslinking so that (i) has a surface density SD of unreacted, residual vinyl, per nm, of 0.0100&#x2267;SD&#x2267;0.0040; (III) optionally repeating steps (I) and (II) n times to give n elements (i) that adhere to one another; (IV) forming (2coating) a silicone element (ii) with a liquid silicone preparation (ii) of the same type as described above; (v) crosslinking to give crosslinked (ii) that adheres to (i).

Process for the production of an assembly comprising several silicone elements crosslinked by polyaddition and adhering firmly to one another

The invention concerns the use as additive for improving properties of resistance to arc tracking and arc erosion: of a mixture A, B or C formed by: concerning mixture A: A1: platinum; and A2: at least an inorganic compound A2.1 of a metal with several degrees of oxidation selected from the group formed by V, Cr, Mn, Fe, Co, Ni, and Cu, in which the metal atom is at a degree of oxidation higher than zero, the least possible (abbreviation: DOX mini); or A3: a combination of at least an inorganic compound A2.1 with at least an inorganic compound A2.2 in which the atom of V, Cr, Mn, Fe, Co, Ni or Cu is at a degree of oxidation higher than DOX mini; concerning mixture B: B1 platinum; and B2: at least an inorganic compound B2.1 of cerium-IV or of lanthanum-III; or B3: a combination of at least an inorganic compound B2.1 with at least an inorganic compound B2.2 of titanium-IV; concerning mixture C3: C1 platinum; and C2 a combination of constituent A2 or A3 with the constituent B2 or B3; in a polyorganosiloxane composition D for obtaining a silicon elastomer, either cross-linkable at room temperature or by heat by reaction of polyaddition in the presence of a metal catalyst, or cross-linkable at high temperature by the action of organic peroxide(s).

Use of mixtures based on Pt and on compounds based on transition metals other than Pt, for enhancing the arc-resistance properties of silicone elastomers

The invention relates to adhesive silicone elastomer compositions which can be crosslinked by polyaddition. The composition, crosslinkable by polyaddition (hydrosilylation), comprises: &#x3b1;/ at least one polyorganosiloxane (POS) bearing ethylenic and/or acetylenic unsaturations [POS with &#x2261;Si-(unsaturated) units]; &#x3b2;/ at least one polyorganosiloxane (POS) with &#x2261;Si&#x2014;H units; &#x3b3;/ a catalytic combination comprising &#x3b3;.1 at least one metallic catalyst (preferably platinum based), &#x3b3;.2 and at least one crosslinking inhibitor; &#x3b4;/ a filler; &#x3b5;/ at least one adhesion promoter; &#x3c1;/ at least one POS resin; &#x3bb;/ at least one thermal resistance agent; and &#x3c6;/ optionally at least one other functional additive. Methods of making and using the subject composition are also described.

Single-component adhesive silicone elastomer composition which can be crosslinked by polyaddition

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Meyzieu, France

Alain Pouchelon