摘要:
The present invention relates to a process for the manufacturing of continuously shaped cured silicone articles, particularly extrusions articles and the use of silicone compositions containing a photoactivatable metal catalyst in said process, wherein the curing is initiated by visible or UV-light.
摘要:
A hot melt adhesive composition can be used to laminate substrates together in construction industry and industrial maintenance and assembly applications. The hot melt adhesive composition is sprayable to form a thin layer (1 to 200 microns in thickness) on a substrate. The hot melt adhesive can cure by exposure to moisture or harden by cooling, or a combination thereof.
摘要:
Silicone coatings and moldings are produced from a photocrosslinkable silicone mixture which contains (A) a polyorganosiloxane containing at least two carbon-carbon multiple bonds, (B) an organosilicon compound containing at least two SiH functions, and (C) a cyclopentadienyl-platinum complex catalyst be activatable by light of 200 to 500 nm, wherein the mixture is heated to 40° C. to 250° C., and then irradiated with light of 200 to 500 nm wavelength.
摘要:
A method of preparing a diluted chain extended organopolysiloxane containing polymer comprising the steps of reacting a pre-formed polymer with a suitable chain extender reactable with terminal groups of the polymer in the presence of a diluent material, a suitable catalyst and optionally an end-blocking agent; and Where required quenching the polymerization process wherein the diluent material is substantially retained within the resulting diluted organopolysiloxane containing polymer. The case additionally relates to products of the process and subsequent applications for the polymer such as for example sealants and rubbers.
摘要:
A hydrosilylation reaction-curable organopolysiloxane composition comprising (A) a methylpheny-lalkenylpolysiloxane that has at least two alkenyl groups wherein diphenylsiloxane units are no more than 5 mole % and at least 20 mole % is comprised of phenyl groups, (B) a methylphenylhydrogenpolysiloxane that has at least two Si-bonded hydrogen atoms wherein diphenylsiloxane units are no more than 5 mole % and at least 20 mole 1% is comprised of phenyl groups, and (C) a hydrosilylation reaction catalyst. An optical semiconductor element sealant comprising this composition. An optical semiconductor device sealed with this optical semiconductor element sealant.
摘要:
A hot melt adhesive composition can be used to laminate substrates together in construction industry and industrial maintenance and assembly applications. The hot melt adhesive composition is sprayable to form a thin layer (1 to 200 microns in thickness) on a substrate. The hot melt adhesive can cure by exposure to moisture or harden by cooling, or a combination thereof.
摘要:
Silicone compositions, particularly for the production of anti-fouling varnishes which may be applied to flexible or bulk supports to provide an anti-fouling silicone varnish for textiles coated with elastomeric silicones which is economical, adhesive, low-slip and glossy; these are crosslinked silicone compositions comprising: A. at least one alkenylsilane, B. at least one catalytic system which comprises: B/1 at least one organometallic condensation catalyst, B/2 at least one metal M chelate and/or one metal alkoxide of general formula M(OJ)n, wherein n=valence of M and J=linear or branched C1-C8 alkyl radical, M being selected from among: Ti, Zr, Ge and Al, C. at least one ultrafine filler, D. optionally, at least one arylsilane other than A. E. optionally, at least one other silane other than A. and other than D., F. optionally, at least one thickening agent and G. optionally, at least one functional additive.
摘要:
A solventless silicone pressure-sensitive adhesive composition is provided. The composition includes (A) a polyorganosiloxane with a polymerization degree of 300 to 2,000 and having at least two alkenyl group-containing organic groups, (B) a polyorganohydrosiloxane having at least three silicon-bonded hydrogen atoms, (C) a polydiorganosiloxane having alkenyl groups at both terminals, (D) a polydiorganosiloxane having SiH groups at both terminals, (E) a polyorganosiloxane composed of R23SiO1/2 units and SiO2 units (R2 is a monovalent hydrocarbon group), and (F) a platinum-based catalyst. The composition enables the prevention of problems caused by residual or volatilized organic substances, such as the absorption of ultraviolet radiation or the like, and also enables ready removal of the composition without deforming or damaging the adherend.
摘要:
A Chromium VI-free coating composition comprises a binder and a corrosion inhibitor in a solvent, wherein the binder comprises a silicate and an organic titanate, and the corrosion inhibitor comprises aluminium particles and zinc particles preferably flakes. The composition may also comprise an anti-corrosion additive which comprises a metal phosphate, a lubricant which comprises a polyolefin wax, and/or a thickener. The coating composition is useful for coating substrates such as nuts, bolts and other fasteners, door, bonnet and boot lock parts, hinges, door stoppers, window guides, seat belt components, brake rotors and drums, and other transportation industry related parts.
摘要:
A gasket coating admixture of a silicone polymer blend of diphenyl polysiloxane silanol polymer, methylsiloxane polymer, and powdered particulate of aluminum and/or graphite is cured with zirconium acetate to provide a coating for components such as gaskets. The silicone polymer blend is optionally admixed with any of microspheres, PTFE particles, and inert particulate. The admixtures provide a basis for designed cured coatings having internally differentiated regions interbonded by cured polymer. The coating admixture has especial value in coating gasket carriers to form gasket for use in high temperature environments.