Crosslinkable silicone composition for the preparation of non-stick coatings for polymer films

Abstract

Silicon compositions with the silicon compound ingredient A alkenylated PolyOrganoSiloxane (POS) containing an F1 fraction and an F2 fraction that are different from each other; F2, an adherence enhancer comprising a linear monoalkenylated silicon oil (A2.1) at one of its ends and / or a long linear α,ω,-alkenylated silicon oil (A2.2) and / or a “weakly alkenylated linear oil. Applications: non-stick silicon coatings obtained from crosslinking / polyaddition for PET.

Description

technical field [0001] The technical field of the invention is crosslinkable or crosslinked silicone compositions, in particular coatings or waterproof non-adhesive films which can be used to form flexible supports, preferably natural or synthetic polymeric in the form of thin films. [0002] Such curable non-adhesive silicone compositions are applied to such supports for easy removal of adhesive material reversibly laminated to the support. [0003] More specifically, the silicone composition of the present invention contains: [0004] - Functionalized polyorganosiloxanes (POS) with Si-H on the same molecule or on different molecules [(M) a’≥0 (M H ) b’≥0 (D H ) c’≥0 (D) d’≥0 ] and Si-alkenyl units, preferably Si-vinyl (Vi) [(M) a”≥0 (M Vi ) b”≥0 (D Vi ) c”≥0 (D) d”≥0 ] unit; the Si-H unit can react with Si-alkenyl units; [0005] - a suitable metal catalyst, preferably platinum; [0006] - optionally, at least one adhesion regulating system, such as based on s...

AI Technical Summary

Problems solved by technology

[0031] Current technical solutions do not solve the above problems, especially with regard to flexible polymer supports (especially made of polyesters such as PET)

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