Abstract: A composition for the surface treatment of rubber is disclosed which comprises (A) a diorganopolysiloxane capped with a triorganosiloxy group at one end and a hydroxyl or alkoxy group at the other end; (B) at least one compound selected from organotrialkoxysilanes, organotriacyloxysilanes, organotrioximesilanes or tetraalkyl silicates; and (C) a condensation-reaction catalyst. The composition imparts durable release and lubrication properties to rubber bladders used in the manufacture of tires.

Abstract: Radiation-curable organopolysiloxane compositions containing an alkenyl-substituted organopolysiloxane, a mercaptoalkyl-substituted organopolysiloxane and an aliphatically unsaturated silicon compound bearing at least one silicon-bonded alkoxy or alkoxyalkoxy radical have improved adhesion to a substrate when coated and cured thereon. The compositions can further contain a photosensitizer, a catalyst for the reaction of silicon-bonded alkoxy groups and other components such as fillers, stabilizers, colorants and flame retardants. The compositions are useful as an adhesive or coating for various substrates and in various industries.

Abstract: Provided is a method for preparing a spherical cured product having a diameter of 5 mm or less of a polymer or a polymer composition containing at least 10 wt % of the linear organopolysiloxane blocks represented by the following general formula (1), characterized by curing in an atomized state a curable polymer or a curable polymer composition containing at least 10 wt % of the linear organopolysiloxane blocks represented by the following general formula (1):--R.sub.2 SiO].sub.n (1)wherein R's are the same or different monovalent hydrocarbon groups and n is an integer of 5 or more.

Abstract: The present invention provides a releasable film forming composition comprising (1) an organopolysiloxane having hydroxyl groups at the ends of the molecular chain, (2) a finely divided silica, (3) a phenyl-containing organosilane or organopolysiloxane, (4) an organohydrogenpolysiloxane containing at least three SiH groups per molecule, (5) a metallic salt of an organic acid and (6) an organic solvent, and a process for preparing same, as well as a releasable film forming composition comprising (1) an organopolysiloxane containing at least two silicon atom-bonded alkenyl groups per molecule, (2) a finely divided silica, (3) a phenyl-containing organosilane or organopolysiloxane, (4) an organohydrogenpolysiloxane containing at least two SiH groups per molecule, (5) a platinic compound and (6) an organic solvent, and a process for preparing same. These compositions exhibit a superior printability and a stable releasability from adhesive materials and are less slippery.

Abstract: The present invention provides a releasable film forming composition comprising (1) an organopolysiloxane having hydroxyl groups at the ends of the molecular chain, (2) a finely divided silica, (3) a phenyl-containing organosilane or organopolysiloxane, (4) an organohydrogenpolysiloxane containing at least three SiH groups per molecule, (5) a metallic salt of an organic acid and (6) an organic solvent, and a process for preparing same, as well as a releasable film forming composition comprising (1) an organopolysiloxane containing at least two silicon atom-bonded alkenyl groups per molecule, (2) a finely divided silica, (3) a phenyl-containing organosilane or organopolysiloxane, (4) an organohydrogenpolysiloxane containing at least two SiH groups per molecule, (5) a platinic compound and (6) an organic solvent, and a process for preparing same. These compositions exhibit a superior printability and a stable releasability from adhesive materials and are less slippery.