C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 5/00 (2006.01) C08J 7/04 (2006.01) C09D 183/06 (2006.01)
Patent
CA 2365507
The invention relates to silicone compositions that are used in the production of varnishes that can be applied to supports in order to reduce the friction coefficient. The inventive composition comprises at least one polyorganosiloxane A (POS) which can be cationically and radically cross-linked by functional cross-linking groups (GFR) and a primer C chosen from onium borates, charcterised in that the inventive composition also comprises molecules (POS D) which are substituted by secondary functional groups (GFS) carried by silicon atoms and selected from those that include at least one alkoxy and/or epoxy and/or carboxy motif and optionally a charge (e.g. silica). The invention can be used with anti-friction varnishes for RTV silicone coatings for material used in air bags, thermal transfer ribbons or packing films.
L'invention concerne des compositions silicones utiles notamment pour la réalisation de vernis applicables sur des supports, dont on cherche à diminuer le coefficient de friction. La composition selon l'invention comprend au moins un polyorganosiloxane A (POS) réticulable par l'intermédiaire de groupements fontionnels de réticulation (GFR) par voie cationique et/ou radicalaire et un amorceur C choisi parmi les borates d'onium, caractérisée en ce qu'elle comporte en outre des molécules (POS D) substituées par des groupements fonctionnels secondaires (GFS) portés par des atomes de silicium et sélectionnées parmi ceux comprenant au moins un motif alcoxy et/ou époxy et/ou carboxy, éventuellement une charge (e.g. silice). Application: Vernis anti-friction pour revêtements silicone RTV de tissu pour "air bag", de rubans à transfert thermique ou de films d'emballage.
Bertry Jean-Louis
Bohin Fabrice
Frances Jean-Marc
Priou Christian
Rhodia Chimie
Robic
LandOfFree
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