Rhodia Chimie

Christophe Guyot

Christian Mirou

Didier Dhaler

André Lievre

Jean-Paul Benayoun

Andr&eacute; Lievre

Alain Pouchelon

Yves Giraud

Paul Branlard

Fr&eacute;d&eacute;ric Magd

Fr&eacute;d&eacute;ric Garnes

Francois Desne

Bernard Mirabel

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 characterized in that its silicone coating results from heat polymerization and/or curing of: either monomers, oligomers and/or polymers bearing at least a reactive Si&#x2014;H structural unit and monomers, oligomers and/or polymers bearing at least a reactive unsaturated aliphatic group; or monomers, oligomers and/or polymers bearing at least a reactive Si&#x2014;OH structural unit; or monomers, oligomers and/or polymers bearing at least a reactive Si&#x2014;H structural unit and monomers oligomers and/or polymers bearing at least a reactive epoxy, oxetane and/or dioxolane unit; and said silicone coating further comprises at least an additive adjusting the release force of a silicone/adhesive interface and whereof the activity is photochemically initiated and adjustable.

Heat-curable silicone adhesive complex whereof the interface has release force capable of being modulated

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.

Carbon-curable silicone/adhesive complex whereof the interface has release force capable of being modulated

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.

Silicone/adhesive complex whereof the interface has a release force capable of being modulated by electron beam irradiation

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

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&deg; C. to 200&deg; C., the said conditions making use of means for very precisely metering the constituents, means for premixing the constituents other than C and means for homogeneously mixing C with the premix(es) prepared; step 2 of conveying the homogeneous mixture to the coating site; step 3 of coating the support with the homogeneous mixture; and step 4 of crosslinking, in particular with thermal means.

Process and device for coating a support using a crosslinkable silicone composition

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. ), 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. This process also includes Steps (2) for conveying the composition to the coating site, Step (3) for coating the strip of paper with the composition and Step (4) of thermal crosslinking.

Method and device for coating substrate to provide it with antiadhesive properties, using a cross-linkable silicon composition

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Lyons, France

Christophe Guyot