Solventless releaser composition for use with silicone pressure-sensitive adhesives and release liner

• Main Authors: KISHITA, HIROFUMI, YAMAGUCHI, KOICHI
• Format: Patent
• Language: English; French; German
• Published: 02.09.2015
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS AS ADHESIVES; USE OF MATERIALS THEREFOR; WOODSTAINS

A solventless releaser composition is provided comprising (A) an organopolysiloxane containing at least two alkenyl groups and at least one monovalent fluorinated substituent group and having a fluorine content of 30-50 wt% and a viscosity of 100-2,000 mPa-s at 25°C, (B) an organohydrogenpolysiloxane containing at least three SiH groups, (C) a reaction regulator, and (D) a platinum catalyst. The composition is coated and cured to a substrate to form a release liner for use with silicone pressure-sensitive adhesives.