Canon Kabushiki Kaisha

Dow Corning Asia Limited

Other

Dow Corning Toray Silicone Company Limited

Dow Corning Toray Company, Ltd.

Dow Corning Corporation

Director-general of Agency of Industrial Science and Technology

Dow Cornings Asia, Ltd.

Nobuo Kushibiki

Yoko Yoshinaga

Tetsuro Kuwayama

Kikuko Takeuchi

Hideki Kobayashi

Toshio Suzuki

Toshiyuki Nakajima

Hiroyoshi Kishi

Yukichi Niwa

Masaaki Suzuki

Masakazu Matsugu

Kazuo Yoshinaga

Takuya Ogawa

Naosato Taniguchi

Noriyuki Nose

Takeshi Baba

Toru Masatomi

Yoshinori Nakata

Norio Kaneko

Eigo Kawakami

Michitaka Suto

Maki Itoh

Toshiaki Majima

Shunichiro Nishida

Katsuya Eguchi

Takeshi Okutani

Hideaki Nagai

Masayoshi Tabata

Masashi Murakami

Yoko Sugata

Dimitris Katsoulis

Akira Miyake

Shigeyuki Suda

Hideo Kato

Yuichi Hashimoto

Masataka Kawahara

Yasuaki Fukuda

Fumio Kishi

Masahiro Okuda

Keiko Hiraoka

Yukinari Harimoto

Dimitris Elias Katsoulis

Fabrice Rossignol

Tetsuro Kumayama

Kazuaki Yokota

Tohru Masatomi

Fumito Nishida

Maria Teresa De Los Arcos De Pedro

Munehiro Yamaguchi

Yoshiho Imai

Elias Dimitris Katsoulis

Tetsuyuki Michino

Cyclic dihydrogenpolysiloxanes, hydrogenpolysiloxanes of specific siloxane unit formulas etc., a process for their production using hydrolysis/condensation, a process for the production of silica type glass moldings with an optical transmittance of 90% to 100% in the vacuum-UV region to UV region and an optical transmittance of 98% to 100% in the visible region to near infrared region by curing said cyclic dihydrogensiloxanes or said hydrogenpolysiloxanes in a mold, said silica type glass moldings, optical elements made up of the silica type glass, a process for the production of optical elements having such a silica type glass film layer by coating an optical element with the hydrogenpolysiloxanes and curing them, and optical elements having such a silica type glass film layer.

Cyclic dihydrogenpolysiloxanes, hydrogenpolysiloxanes, processes for their production, silica type glass moldings and a process for their production, optical elements and a process for their production

A free-standing film comprising a cured organopolysiloxane resin obtained by conducting a cross-linking reaction between (A) an organopolysiloxane resin represented by the following average siloxane unit formula: [RRSiO][RSiO](1) or [RRSiO][RSiO][SiO](2) (where Rdesignates univalent hydrocarbon groups of one or more than one type selected from alkyl groups having 1 to 4 carbon atoms and univalent aromatic hydrocarbon groups having 6 to 8 carbon atoms; Rdesignate alkenyl groups having 2 to 6 carbon atoms; Rdesignates alkyl groups with 1 to 4 carbon atoms or univalent aromatic hydrocarbon groups having 6 to 8 carbon atoms; at least 50 mole % of Rgroups being phenyl groups; 'a' is 0, 1, or 2; 0.8&#x2266;w&#x3c;1.0 and v+w=1; 0&#x3c;x&#x3c;0.4, 0.5&#x3c;y&#x3c;1, 0&#x3c;z&#x3c;0.4, and x+y+z=1); and (B) an organosilicon compound that contains in one molecule two or more silicon-bonded hydrogen atoms, in which not less than 5 mole % of all silicon-bonded univalent groups are univalent aromatic hydrocarbon groups, in the presence of (C) a hydrosilylation catalyst.

Free films made of cured organopolysiloxane resins, process for production thereof, and laminated films

The present invention relates to a film made from a cross-linked polysiloxane obtained by subjecting a polysiloxane that has a specific chemical structure and contains at least two unsaturated aliphatic hydrocarbon groups in one molecule and an organosilicon compound with at least two hydrogen atoms directly bonded to silicon atoms in one molecule to cross-linking reaction in the presence of a platinum-type catalyst. The film provided by the invention possesses superior heat-resistant properties, has excellent permeability for light in the visible wavelength range, is characterized by low birefringence, and demonstrates physical properties suitable for practical application. By forming an inorganic substance layer on the aforementioned polysiloxane, it is possible to use the laminated film of the invention, e.g., as a transparent electrode film.

Polysiloxane film and process for producing the same

The present invention provides a nanoparticle dispersed structure featuring a polymer having a crosslinked structure that is chemically inert with respect to the nanoparticles and that is effective in suppressing diffusion, and provides a method for manufacturing this nanoparticle dispersion.

Nanoparticle dispersed structure and laminate thereof

A composite material having a plurality of laminated polysilylenemethylene layers each having an inside region adjacent to a surface thereof in which nanoparticles of a metal of Au, Pt, Pd, Cu or Ag are dispersed. The composite material is produced by heating a layer of disilacyclobutane overlaid with a layer of nanoparticles of the above metal to polymerize the disilacyclobutane. The above procedure is repeated at least once more.

Composite material containing fine particles of metal dispersed in polysilylenemethylene and process for the preparation thereof

Organosilicon-modified charge transporting compound and curable composition containing the compound and having charge transporting ability

A process for the preparation of a photosensitive body surface coating material comprises hydrolytically condensing an alkoxysilane in a mixed solvent comprising an alcohol and water in the presence of finely divided silica. A polysiloxane resin is produced by heat curing the silane after its hydrolytic condensation. The polysiloxane resin has the formula: R.sup.1 SiO.sub.3/2, and R.sup.1 comprises fluorohydrocarbon groups. The photosensitive body surface coating material is not detrimental to the functionality required of the electrophotographic photosensitive bodies, has superior optical uniformity, has low surface energy, and has superior surface hardness.

Process for the preparation of photosensitive body surface coating

A method for forming a low surface energy coating for electrophotographic photosensitive body substrates does not require performing a physical surface reforming treatment such as corona discharge, plasma treatment, and the like. The process comprises: forming on the substrate at least one polysiloxane coating material, (B), that has a water contact angle greater than the water contact angle of the substrate; and thereafter forming an outermost surface coating material, (A), on top of coating material (B). The water contact angle of coating material (B) is smaller than the water contact angle of coating material (A). Coating material (A) comprises finely divided silica and a resin of the formula RSiO.sub.3/2, wherein not less than 1 mol % and not more than 80 mol % of the R groups are fluorohydrocarbon groups of 3 to 12 carbon atoms.

Method for forming low surface energy coating

An electrophotographic photosensitive member is disclosed which has a photosensitive layer and a protection layer. The protection layer contains a particulate colloidal silica and a siloxane resin to have a contact angle of water of not less than 90.degree.. The photosensitive member has a lowered surface energy and excellent mechanical and electrical durability.

Electrophotographic photosensitive member, and electrophotographic

A process for the preparation of an electrically conductive coating material for use in electrophotography applications comprises subjecting an epoxy-functional silane to hydrolytic condensation in a mixed solvent of alcohol and water in the presence of silica. The hydrolyzed material is then heat cured to form a resin coating comprising (R.sup.1 SiO).sub.3/2 units, where R.sup.1 comprises epoxy-functional groups. The coating has superior optical homogeneity and electrical conductivity without being detrimental to the functionality required of electrophotographic photosensitive bodies.

Process for the preparation of an electrically conductive coating

An optical silica-containing polysiloxane resin comprises colloidal silica and a polysiloxane resin. The polysiloxane resin has the formula RSiO.sub.3/2, where R is selected from the group consisting of hydrocarbon groups of 1 to 4 carbon atoms and fluorohydrocarbon groups of 3 to 10 carbon atoms. The fluorohydrocarbon groups have the general formula C.sub.n F.sub.(2n+1) C.sub.2 H.sub.4 --, where n is an integer of 1 to 8. The optical silica-containing polysiloxane resin has high light transmissivity and high surface hardness, and can be used for optical elements.

Optical silica-containing polysiloxane resin

The invention provides a method for manufacturing a polysiloxane resin with charge transporting property by uniformly dissolving a charge transporting material to a practical concentration in a polysiloxane resin. The charge transporting material that is dissolved in the polysiloxane resin is an aromatically substituted tertiary amine which has been modified by substitution of one or more of the aromatic groups with a hydrocarbon group containing a silyl group with hydrolyzable substituents.

Method of manufacturing a polysiloxane charge transporting material

A method of manufacturing solvent-soluble charge transporting materials capable of imparting charge-tranporting properties to polysiloxane resins. These materials have the formula A-�R.sup.1 SiR.sup.2.sub.3-n Q.sub.n !.sub.p where A is a tertiary amine and organic group derived from a compound having charge transporting properties with an ionization potential of 4.5-6.2 eV; R.sup.1 is an alkylene group of 1-18 carbon atoms; R.sup.2 is a monovalent hydrocarbon group or a monovalent halogen-substituted hydrocarbon group of 1-15 carbon atoms; Q is a hydrolyzable group such as--OR.sup.3 where R.sup.3 is an alkyl group of 1-6 carbon atoms; n and p are each 1-3. This silicon-type charge transporting material is characterized by aromatic groups, and alkoxysilyl groups bonded via hydrocarbon groups onto the aromatic rings.

Method of manufacturing sililcon-type charge transporting materials

A method of detecting an ultraviolet laser beam, which includes irradiating a detector with the ultraviolet laser beam to produce photoluminescence from the detector, and sensing the photoluminescence. The detector includes a specific polysilmethylene compound or a specific polysiloxane compound. A method of recording an information is also disclosed which includes exposing a photosensitive layer to an ultraviolet laser beam according to the information. The photosensitive layer includes a specific polysilmethylene compound or a specific polysiloxane compound. By irradiating the exposed photosensitive layer to a reference ultraviolet laser beam, the recorded information is read.

Method of detecting ultraviolet laser beam and method of recording

Cross-liked resins exhibiting a high level of optical transparency and little variation of refractive index with temperature are prepared using mixtures of two organosiloxane resins in combination with a reinforcing silica filler. The types and relative concentrations of hydrocarbon radicals in the resins are within specified limits to obtain the required optical properties and each resin contains groups that react with groups on the other resin to form a crosslinked network.

Optically transparent organosiloxane resin compositions

Growing community of inventors

Kanagawa, Japan

Nobuo Kushibiki