Abstract: The invention relates to an additive manufacturing process for producing a silicone elastomer item. In particular, the invention relates to an additive manufacturing method for producing a silicone elastomer item from a photocrosslinkable silicone composition. The invention also relates to a photocrosslinkable silicone composition.

Abstract: The invention relates to the general field of coating various flexible supports, such as sheets of paper or synthetic polymer (polyolefin, polyester, etc) sheets or fabric sheets, with a silicone on high-speed rolls. The invention relates to an efficient method for preventing mist formation when coating flexible supports with a liquid silicone composition precursor of cross-linked coatings, said coating process being performed using a coating device that includes a roll operating at a high speed.

Abstract: The present invention relates to a method for producing a three-dimensional (3D) printed article with a photocurable silicone composition involving a silicone containing as end-group specific (meth)acrylate groups.

Abstract: Silicone material obtained by a reaction between:—at least one organopolysiloxane (A) that has a molar mass of less than 70,000 g/mol, preferably less than 50,000 g/mol, and contains siloxyl units I.1 and I.2; and—at least one organic compound (B) carrying at least two carboxylic acid groups and having no unsaturation. Y a ? Z b 1 ? SiO 4 - ( a + b ) 2 ( I ? .1 ) Z c 2 ? SiO 4 - c 2 ( I ? .

Abstract: 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.

Abstract: The invention relates to a method for the additive manufacturing of a silicone elastomer article. In particular, the invention relates to a method for the additive manufacturing of a silicone elastomer article and a support using a 3D printer.

Abstract: Nanoparticles that can be used as hydrosilylation and dehydrogenative silylation catalysts. The nanoparticles have at least one transition metal with an oxidation state of 0, chosen from the metals of columns 8, 9 and 10 of the periodic table, and at least one carbonyl ligand, preferably a silicide.

Abstract: Nanoparticles that can be used as hydrosilylation and dehydrogenative silylation catalysts. The nanoparticles have at least one transition metal with an oxidation state of 0, chosen from the metals of columns 8, 9 and 10 of the periodic table, and at least one carbonyl ligand, preferably a silicide.

Abstract: The present invention concerns type II photoinitiators for the free-radical crosslinking of silicone compositions, in particular acrylic silicone compositions. The present invention concerns a silicone composition C1 that can be crosslinked by exposure to radiation with a wavelength of between 300 and 450 nm, comprising: —at least one organopolysiloxane A comprising at least one methacrylate group bonded to a silicon atom, at least one organohydrogenopolysiloxane H comprising at least two, and preferably at least three hydrogen atoms each bonded to different silicon atoms, and—at least one free-radical photoinitiator P. The present invention also concerns the provision of a silicone composition that can be polymerized or crosslinked by free-radical process comprising a type II photoinitiator system suitable for crosslinking silicone compositions, in particular by exposure to radiation, and absorbing light radiation with a wavelength greater than 300 nm.

Abstract: A system and method for forming a silicone composition C that is crosslinkable by exposure to radiation with a wavelength between 200 nm and 450 nm, having: at least one radical photoinitiator A; and at least one co-initiator B chosen from compounds having at least one hydrogen atom bonded to a silicon atom.

Abstract: Silicone compositions are described for the production of negative molds that include a silicone elastomer. The molds can be used in the production of molded articles.

Abstract: A self-adhesive multi-layer item comprising: 1) a dorsal support DO having a top face SI1 and a bottom face SI2, 2) at least one layer of silicone release coating RC applied to the top face SI1 of the dorsal support DO and which is prepared by irradiation of a curable silicone composition C not containing any solvent and comprising, as constituents: a) at least one functionalized organopolysiloxane A b) an effective amount of at least one type I photoinitiator P of the family of acylphosphine oxide derivatives of formula (III) 3) at least one adhesive PSA, preferably at least one pressure-sensitive adhesive PSA, applied on the layer of silicone release coating, 4) a frontal support FR applied on the adhesive PSA of the component 3), and 5) optionally at least one layer of silicone release coating RC applied on the bottom face SI2 of the dorsal support DO and which is prepared by application and irradiation of said curable silicone composition C, and on this same layer, there is at least one adhesive PSA,

Abstract: The invention relates to an additive manufacturing process for producing a silicone elastomer item. In particular, the invention relates to an additive manufacturing method for producing a silicone elastomer item from a photocrosslinkable silicone composition. The invention also relates to a photocrosslinkable silicone composition.

Abstract: A process is provided for preparing composite articles composed of a rigid glass, metal or thermoplastic resin substrate and of a silicone elastomer with good mechanical properties and good adhesion between the substrate and the silicone elastomer E such that there is a solid bond between the two parts. The composite articles are used in very diverse fields such as electrical and electronic equipment, motor vehicle and medical equipment, and they may be found, for example, in household appliances, consumer goods, medical equipment and sports and leisure articles.

Abstract: Crosslinkable or crosslinked silicone compositions that can be used, in particular, to form a non-stick and water-repellent coating or film for flexible substrates and in the form of natural or synthetic polymer films are provided. These compositions comprise crosslinking organopolysiloxanes bearing SiH units and unsaturated organopolysiloxanes, preferably vinyl organopolysiloxanes, capable of reacting with the crosslinker by addition reaction, in the presence of platinum in order to form the non-stick crosslinked coating on the flexible substrate, and at least one crosslinking and attachment-promoting additive X. These compositions are advantageously free of solvent and can be crosslinked instantaneously into a non-stick and/or water-repellent coating for a flexible substrate.

Abstract: A skin-adhesive item is described that can include a substrate F coated continuously or discontinuously on at least one of the two faces thereof by a pressure-sensitive silicone adhesive Z that has been previously sterilized by means of gamma radiation and demonstrates good tack on the skin even after sterilization.

Abstract: The present invention relates to compositions in the form of silicone oil emulsions intended to be applied to curing bladders as a mould-release agent during tyre production.

Abstract: Items that adhere to the skin for medical or paramedical use and methods of making and using the same are described.

Abstract: Approaches are described for coating various flexible media, such as sheets of paper, synthetic polymer (polyolefin, polyester, etc.) sheets or fabric sheets, with a silicone on high-speed rolls. For example, an efficient method is described for minimizing and/or reducing mist formation when coating flexible supports with a liquid silicone composition precursor of crosslinked coatings. The coating process can be performed using a coating device that includes a roll operating at a high speed.

Abstract: A method for producing a porous silicone material including the following steps: 1) implementing a direct emulsion E of silicone in water including: A) a silicone base A crosslinkable by polyaddition or polycondensation; B) at least one nonionic silicone surfactant B having a cloud point between 10 and 50° C.; C) optionally, at least one catalyst C; and D) water; 2) heating the emulsion E to a temperature greater than or equal to 60° C. to obtain a porous silicone material; and 3) optionally, drying the porous silicone material.