Abstract:
This invention relates to a silicone release coating composition comprising : (A) an organopolysiloxane having at least two alkenyl groups in a molecule, (B) an organopolysiloxane having at least two silicon-bonded hydrogen atoms in a molecule, (C) organic modified functional silica particles having an average particle size of 5 μm to 15 μm and a BET specific surface area of 600 m 2 /g to 800 m 2 /g, and (D) a hydrosilylation reaction catalyst. The composition can form a coating with a lower release force to sticky adhesive.
Abstract:
Low temperature hydrosilylaltion reactions to create silicone release coatings utilizing hydridosiloxanes that are branched due to the incorporation of T or Q units, and the inclusion of M H terminal units. The hydridosiloxanes of the present invention provide for faster reaction at low temperatures while providing the optimal M H to D H ratio and maintaining the required physical properties of the desired polymer product. The silicone release coatings of the present invention are valuable for use on heat- sensitive supports or films.
Abstract:
Pressure sensing layers, devices comprising same, pressure sensing monitors and composite materials comprising a) a porous matrix material comprising a siloxane polymer, comprising a closed porosity volume fraction, and, optionally, an open porosity volume fraction, and b) a carbonaceous conductive or semiconductive filler substantially present in said closed porosity volume fraction of said porous matrix material a), and films, coated substrates and multilayer structures comprising the composite material and the use thereof in pressure sensing devices.
Abstract:
The present invention relates to a silicone foam that is produced in situat a wound site, e.g. in a wound cavity, through a multi-component system, based on a physical foaming process, wherein the gas required to form the foam structure is provided through the blowing agent independently of the curing reaction of the polyorganosiloxane components of the multi-component system. Therefore, in accordance with the present invention, the blowing agent is provided as a distinct entity of the multi-component system that is, in particular, not the result of any chemical reaction taking place in the multi-component system. The present invention also relates to a device for producing the foam and the corresponding negative pressure wound therapy kit.
Abstract:
La présente invention a pour objet une composition silicone durcissable comprenant un système d'inhibition temporaire de la réaction d'hydrosilylation à activation par irradiation comprenant au moins un inhibiteur choisi parmi les alcools a-acétyléniques, les diesters α-α'-acétyléniques, les composés conjugués ène-yne, les cétones α-acétyléniques, les acrylonitriles, les maléates, les fumarates et les mélanges de ceux-ci, au moins un photoamorceur, et du tris(triméthylsilyl)silane (TTMSS). L'invention concerne un procédé de préparation d'un revêtement silicone et de matériaux élastomères durs avec ladite composition silicone.
Abstract:
A sponge-formable silicone rubber composition of the present invention comprises (A) a polyorganosiloxane having at least two silicon-bonded alkenyl groups per molecule, (B) a polyorganosiloxane having at least two silicon-bonded hydrogen atoms per molecule, (C) water, (D) a thickening agent, (E) an emulsifier, (F) a halogen-containing ion conductor of an alkali metal, and (G) a hydrosilylation reaction catalyst. The sponge-formable silicone rubber composition can form a silicone rubber sponge having uniform and fine bubbles and having small distortion due to contraction after secondary vulcanization.
Abstract:
The present invention provides novel low temperature thermal, solventless silicone release coatings for temperature sensitive films. The invention utilizes novel hydridosiloxane crosslinking fluid and hydrosilylation catalyst in conjunction with standard additives, which produce curable polysiloxane release coatings on temperature sensitive films.
Abstract:
Pressure sensing layers, devices comprising same, pressure sensing monitors and composite materials comprising a) a porous matrix material comprising a siloxane polymer, comprising a closed porosity volume fraction, and, optionally, an open porosity volume fraction, and b) a conductive or semiconductive filler substantially present in said closed porosity volume fraction of said porous matrix material a), and films, coated substrates and multilayer structures comprising the composite material and the use thereof in pressure sensing devices.