Abstract: The invention relates to an aqueous silicone emulsion comprising polyorganosiloxanes (POS) with Si-vinyl units and POS with SiH units, cross-linkable by polyaddition in the presence of a platinum catalyst. The emulsion also contains an agent (e.g., buffer) for setting and maintaining pH between 5 and 9 in an amount sufficient to eliminate or significantly reduce foam or gel formation; an emulsifying agent; optionally a polyaddition inhibitor and other additives such as a filler, biocide, antifoam, anti-freeze, coloring agent, synthetic latex. The emulsions can comprise three different families of dispersed silicone phase droplets (e.g., polyorganosiloxane (A), polyorganosiloxane (B) and catalyst). Such emulsions can be used in the preparation of anti-adherent coating on fibrous or non fibrous supports. The invention also concerns a method for preparing said emulsions and methods for coating supports, for example paper, using said emulsion.

Abstract: A process for the preparation of a silicone release coating on a support is provided. The process involves the use of short-wave ultraviolet (UV-C) radiation with a wavelength of between 200 and 280 nm and irradiation with quasimonochromatic light.

Abstract: A process for the polymerization and/or crosslinking of an organic coating composition is provided. The process involves employing an organic coating composition which can crosslink and/or polymerize under irradiation with short-wave ultraviolet (UV C) radiation with a wavelength of between 200 and 280 nm.

Abstract: An aqueous crosslinkable silicone emulsion suitable for preparing a release coating on fibrous supports. The emulsion contains a polyorganosiloxane having Si-vinyl units and a polysiloxane having SiH units, crosslinkable by polyaddition in the presence of a platinum catalyst, together with at least one hydrophilic stabilizing (co)polymer having a molar mass greater or equal to 10,000 g/mol. The stabilizing (co)polymer improves the emulsion's coalescence stability under shear, improves the regularity and homogeneity of a coating of the emulsion on both surfaces of a paper support, and reduces the emulsion's tendency to foam.

Abstract: The invention concerns a silicone/adhesive complex comprising at least a silicone coating applied on a first support and an adhesive coating applied on a second support, and whereof the release force of a silicone/adhesive interface is capable of being modulated.

Abstract: The invention concerns an aqueous silicone emulsion for the preparation of anti-adherent coating on fibrous or non fibrous supports for example paper. Said emulsion-comprises polyorganosiloxanes (POS) with Si-vinyl units and POS with SiH units, cross-linkable by polyaddition in the presence of a platinum catalyst. Known emulsions of this type are not stable and tend to be cross-linked prematurely and to produce a chemical foam. Said undesirable phenomena constitute a great nuisance for industrial machines used for anti-adherent paper coating.

Abstract: An aqueous crosslinkable silicone emulsion suitable for preparing a release coating on fibrous supports. The emulsion contains a polyorganosiloxane having Si-vinyl units and a polysiloxane having SiH units, crosslinkable by polyaddition in the presence of a platinum catalyst, together with at least one hydrophilic stabilizing (co)polymer having a molar mass greater or equal to 10,000 g/mol. The stabilizing (co)polymer improves the emulsion's coalescence stability under shear, improves the regularity and homogeneity of a coating of the emulsion on both surfaces of a paper support, and reduces the emulsion's tendency to foam.

Abstract: An ?SiH/?SiOH silicone composition polymerizable/crosslinkable by dehydrogenating condensation in the presence of a catalyst judiciously selected to achieve at least one of the following: kinetics, concentration/efficiency ratio of the catalyst, cost, lowering of the catalyst activation temperature (room temperature), control of the release of gaseous hydrogen and the quality of the polymerized product and the crosslinked network, and finally limitation of the secondary reactions. This composition includes: —A— at least one ?SiH POS; —B— at least one ?SiOH POS; —C— at least one metal catalyst selected from the group of organometallic complexes including at least one of the following metals: Ir, Ru, Mn; —D— optionally at least one crosslinking inhibitor; —E— optionally at least one POS resin; and —F— optionally at least one filler. Also disclosed is the catalyst —C— and processes which involve crosslinking of silicone by dehydrogenating condensation (non-stick coating on paper).

Abstract: The invention concerns a silicone/adhesive complex including at least one silicone coating applied on a first support and an adhesive coating applied on a second support, wherein the release force of a silicone/adhesive interface is capable of being modulated. The invention is characterized in that its silicone coating results from polymerization and/or curing by cationic process of polyorganosiloxane monomers, oligomers and/or polymers bearing as reactive groups at least epoxy, oxetane, dioxolane and/or alkenylether functions and the silicone coating further includes at least an additive regulating the release force of a silicone/adhesive interface and whereof the activity is photochemically initiated and adjustable.

Abstract: The invention concerns a silicone/adhesive complex comprising at least a silicone coating applied on a first support and an adhesive coating applied on a second support and whereof the release force of a silicone/adhesive interface is capable of being modulated. The invention is characterised in that its silicone coating is derived from polymerisation and/or crosslinking of polyorganosiloxane monomers, oligomers and/or polymers and said silicone coating further comprises at least an additive regulating the release force of a silicone/adhesive interface and whereof the activity is initiated and capable of being modulated by electron beam irradiation.

Abstract: Process for the continuous coating of a strip of paper or of a textile support using a silicone composition, comprising at least one POS A containing SiVi or SiOR groups, a POS B containing SiH groups and a catalyst C (for hydrosilylation or for dehydrogeno-condensation) and not corresponding to an LTC/FC silicone system, the said process comprising the following steps: step 1 in which conditions for homogeneously mixing the constituents A, B and C are used such that the homogeneity obtained is reflected by a DSC signature comprising a Gaussian peak for which the peak end temperature T3 is in the range from a value above 110° C. to 200° C.

Abstract: The invention relates to an ≡SiH/≡SiOH silicone composition polymerizable/crosslinkable by dehydrogenating condensation in the presence of a catalyst judiciously selected to achieve at least one of the specifications listed hereafter: kinetics, concentration/efficacy ratio of the catalyst, cost, lowering of the catalyst activation temperature (room temperature), control of the release of gaseous hydrogen and the quality of the polymerized product and the crosslinked network, and finally limitation of the secondary reactions.

Abstract: The invention concerns a silicone/adhesive complex comprising at least a silicone coating applied on a first support and an adhesive coating applied on a second support and whereof the release force of a silicone/adhesive interface is capable of being modulated. The invention is characterised in that its silicone coating is derived from polymerisation and/or crosslinking of polyorganosiloxane monomers, oligomers and/or polymers and said silicone coating further comprises at least an additive regulating the release force of a silicone/adhesive interface and whereof the activity is initiated and capable of being modulated by electron beam irradiation.

Abstract: The invention concerns an aqueous silicone emulsion for the preparation of anti-adherent coating on fibrous or non fibrous supports for example paper. Said emulsion comprises polyorganosiloxanes (POS) with Si-vinyl units and POS with SiH units, cross-linkable by polyaddition in the presence of a platinum catalyst. Known emulsions of this type are not stable and tend to be cross-linked prematurely and to produce a chemical foam. Said undesirable phenomena constitute a great nuisance for industrial machines used for anti-adherent paper coating.

Abstract: The invention concerns an aqueous silicone emulsion for use in particular in preparing a release coating on fibrous supports or for instance made of paper. Said emulsion comprises polyorganosiloxanes (POS) with Sy-vinyl units and POS with SiH units, crosslinkable by polyaddition in the presence of a platinum catalyst. The inventive emulsion consists in the use of at least a hydrophilic stabilising (co)polymer with molar mass Mw≧105 g/mol, preferably Mw≧5.

Abstract: Process for the continuous coating of a strip of paper or of a textile support using a silicone composition, comprising at least one POS A containing SiVi or SiOR groups, a POS B containing SiH groups and a catalyst C (for hydrosilylation or for dehydrogeno-condensation) and not corresponding to an LTC/FC silicone system, the said process comprising the following steps: step 1 in which conditions for homogeneously mixing the constituents A, B and C are used such that the homogeneity obtained is reflected by a DSC signature comprising a Gaussian peak for which the peak end temperature T3 is in the range from a value above 110° C. to 200° C.

Abstract: Process for the continuous coating of a strip of paper or of a textile support using a silicone composition, comprising at least one POS A containing SiVi or SiOR groups, a POS B containing SiH groups and a catalyst C (for hydrosilylation or for dehydrogeno-condensation) and not corresponding to an LTC/FC silicone system, the said process comprising the following steps: step 1 in which conditions for homogeneously mixing the constituents A, B and C are used such that the homogeneity obtained is reflected by a DSC signature comprising a Gaussian peak for which the peak end temperature T3 is in the range from a value above 110° C. to 200° C.

Abstract: The present invention relates to an anti-adhesion treatment process by continuous coating of a strip of paper, this coating comprising a silicone composition based on polyorganosiloxanes (POSs) of FC/LTC type. According to this process, a POS A, a crosslinking agent B (hydrosilylation and/or dehydrogenopolycondensation), a catalyst C and, optionally, an inhibitor D, an adhesion modifier E and other compounds F are used. These constituents A to F are mixed continuously and in metered amounts, selecting mixing conditions such that the bath lifetime BLT is <10 h, such that the bath homogeneity is such that its DSC signature comprises a Gaussian peak (FIG. 2), and such that the flow rate of production of the homogeneous mixture A to F is such that the duration d separating the placing together of the components A, B and C and the time of application of the composition to the traveling support strip is less than or equal to the BLT.

Abstract: The present invention relates to crosslinkable or crosslinked silicone compositions capable of being employed especially for forming an abherent coating or film for a fibrous or other support, for example made of paper or the like, or made of natural or synthetic polymer (film). One of the essential objectives of the invention is to provide a crosslinkable or crosslinked silicone composition which provides a satisfactory solution to the abherence/printability dilemma, traditionally encountered in abherent silicone coatings. This objective and others are attained by the composition of the invention, including at least one polyorganosiloxane and at least one polyvinyl alcohol corresponding to the following specifications: ester value (E.V.) higher than or equal to 80, preferably 100 and still more preferably between 120 and 200, and standard dynamic viscosity (.eta..sub.