Bluestar Silicones France Sas

Elkem Silicones France Sas

Bluestar Silicones France

Yassine Maadadi

Michel Feder

Alain Pouchelon

Lucile Gambut-Garel

John White

Jean-Marc Frances

Sébastien Marrot

Martial Deruelle

Tania Ireland

Nadia Martin

Frederic Magd

Thierry Walter

Frederic Marchal

Frédéric Marchal

Frédéric Magd

The field of the invention is that of the preparation of release and water-repellent coatings on a support, preferably a flexible support, such as a support made of paper or of synthetic polymer film, preferably of the polyolefin, polypropylene, polyethylene or polyester type. The release coatings taken into consideration are more especially those based on silicone elastomer crosslinked after coating on these supports.

Process for producing a water-repellent and release coating on a support

Methods of using inhibitor compounds are described. In particular, methods of using inhibitor compounds to inhibit the curing of a silicone composition that is a precursor of a silicone elastomer produced by a hydrosilylation reaction are described.

Hydrosilylation reaction inhibitors, and use thereof for preparing stable curable silicone compositions

Crosslinkable or crosslinked silicone compositions, forming water-repellent and release coating for a flexible heat sensitive support of paper or polymer, and comprising crosslinking polyorganosiloxanes (POSs) bearing &#x2261;Si&#x2014;H units and unsaturated, preferably &#x2261;Si-Vi, vinyl-containing POSs, capable of reacting with the crosslinker by polyaddition, in the presence of platinum in order to form the crosslinked release coating on the flexible support. The object is enabling the coating composition to crosslink instantaneously to produce, on various flexible supports (paper, e.g. glassine, or polymer, e.g. polyester such as polyethylene terephthalate PET), a crosslinked silicone coating leaving the coating machine, with excellent attachment (adhesion) and mechanical strength or cohesion&#x2014;'Rub-off'&#x2014;properties. The invention uses, per 100 parts by weight of silicone base, of 1 to 40 parts by weight of an additive comprising from 1 or 5 to 80% by weight of particulate filler, preferably nanoscale filler, in a silicone oil reacting with the crosslinker.

Silicone composition for coating a flexible support intended to form a crosslinked coating having increased attachment, mechanical strength and reactivity

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

Coating of flexible materials with liquid compositions is disclosed. The compositions advantageously comprise one or more polyorganosiloxanes crosslinkable by polyaddition, by dehydrocondensation, by polycondensation, cationically or free-radically to form a protective coating or film having, in particular, release and/or water-repellency properties.

Process for combating the appearance of haze during the coating of flexible supports with a crosslinkable liquid silicone composition, in a roll device

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Meyzieu, France

Yassine Maadadi