Abstract:
PROBLEM TO BE SOLVED: To provide curable organopolysiloxane compositions capable of quickly curing on the surfaces of various substrates and allowing portions oozed out before or during curing to well cure to adhere to various substrates, cured products to be obtained by curing the compositions, and integrated products of the cured products with the substrates. SOLUTION: A curable organopolysiloxane composition comprises (A) an organopolysiloxane having an average of at least two alkenyl groups and an average of at least two silicon atom-bonded hydrogens in the same molecule, (B) a compound having an alkenyl group and a hydroxyphenyl group in one molecule, and (C) a hydrosilylation reaction catalyst. A cured product is obtained by curing this composition, and an integrated product of a cured product with a substrate is obtained by integrating the cured product of the composition with the substrate.
Abstract:
PROBLEM TO BE SOLVED: To improve the wire bondability to a semiconductor chip and a lead frame by using three specified organopolysiloxanes, a condensation catalyst and a platinum catalyst as the constituents. SOLUTION: A mixture of 5-95wt.% organopolysiloxane (a) which has a viscosity at 25 deg.C of 20-200,000cP, contains at least two alkoxy groups bonded to an Si atom in the molecule and does not contain an alkenyl group bonded to an Si atom and 95-5wt.% organopolysiloxane (b) which has a viscosity at 25 deg.C of 20-200,000cP, contains at least two alkenyl groups bonded to an Si atom in the molecule and does not contain an alkoxy group bonded to an Si atom in an amount of 100 pts.wt. is blended with an organopolysiloxane (c) which has a viscosity at 25 deg.C of 2-20,000cP and contains at least two H atoms bonded to an Si atom in the molecule in an amount sufficient to provide a molar ratio of the alkenyl groups bonded to an Si atom in component (b) to the H atoms bonded to an Si atom of (0.5 to 20): 1, 0.01-10 pts.wt. condensation catalyst and 0.01-1,000ppm (in terms of metal atoms) platinum catalyst.
Abstract:
PROBLEM TO BE SOLVED: To produce a conductive silicone composition, to be cured by an addition reaction, which can cure through an addition reaction and form a conductive silicone cured product having low electrical resistance and low electric receptivity and small in the temperature dependence of electrical resistance and a change of electrical resistance and electric resistivity with time, and to efficiently produce such a conductive silicone cured product. SOLUTION: This conductive silicone composition to be cured by an addition reaction comprises (A) 100 pts.wt. of an organopolysiloxane having, in a molecule, at least two alkenyl groups, (B) a composition-sufficietly curing quantity of an organopolysiloxane having, in a molecule, at least two hydrogens combined with a silicon, (C) 50-2000 pts.wt. of conductive metal-based finely divided powder, (D) a catalytic quantity of platinum-based catalyst for addition reaction and (E) 0.1-10 pts.wt., based on 100 pts.wt. of the total of components A, B, C and D, of a volatile solvent with a higher boiling pint (
Abstract:
PROBLEM TO BE SOLVED: To provide a conductive silicone rubber composition which can be cured to form a silicone rubber of excellent conductivity by mixing three specified polyorganosiloxanes with a conductive filler and two catalysts. SOLUTION: This conductive silicone rubber composition comprises 100 pts.wt. mixture of 5-95wt.% organopolysiloxane containing at least two Si- bonded alkoxyl groups in the molecule and freed from any Si-bonded alkenyl groups and having a viscosity of 20200,000cP at 25 deg.C with 95-5wt.% polyorganosiloxane having at least two Si-bonded alkenyl groups in the molecule, freed from any Si-bonded alkoxy groups and having a viscosity of 20-200,000cP at 25 deg.C, an organopolysiloxane containing at least two Si-bonded hydrogen atoms in the molecule, having a viscosity of 2-20,000cP at 25 deg.C and (used in an amount to give a molar ratio of the alkenyl groups to the hydrogen atoms of 0.5-20), 50-2,000 pts.wt. conductive filler and a catalyst component comprising a condensation catalyst and a platinum catalyst.
Abstract:
PURPOSE:To provide the subject composition causing little rise or fall in its viscosity at elevated temperatures under high shear, also causing no torque variations, durable to use for a long time, comprising an organopolysiloxane fluid and a specific compound at specified proportion. CONSTITUTION:The objective composition can be obtained by heating at 60-130 deg.C a mixture of (A) 100 pts.wt. of an organopolysiloxane fluid of formula I [R is alkyl; R is aryl; (a+b) is 1.95-2.05; b/(a+b) is 0.05-0.30] (pref. with a viscosity of 500-500000cSt at 25 deg.C) and (B) 0.01-5 pts.wt. of a compound of formula II (R is alkyl) (e.g. a compound of formula III).
Abstract:
PROBLEM TO BE SOLVED: To provide a room temperature-curable organopolysiloxane composition forming a cured product which sufficiently adheres to a substrate with which it is brought into contact on the way of curing and which causes interfacial peeling from the substrate even after a prolonged lapse of time, and electric/electronic apparatuses which permit removal of the cured product from electric circuits or electrodes even after a prolonged lapse of time and can be repaired or recycled. SOLUTION: The room temperature-curable organopolysiloxane composition comprises (A) an organopolysiloxane bearing in one molecule two trialkoxysilyl-containing groups bonded to a silicon atom in the molecular chain, (B) an alkoxysilane or a partial hydrolyzate condensate thereof, (C) a spherical silica fine powder having an average particle size of 0.1-20 μm and (D) a condensation reaction catalyst. The electric/electronic apparatuses have electric circuits or electrodes thereof sealed or coated with the cured product formed of the composition. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a transparent adhesive silicone elastomer sheet curable by hydrosilylation reaction and having stable and permanent tacky adhesiveness on the surface. SOLUTION: The adhesive silicone elastomer sheet is produced by curing a hydrosilylation-curable silicone elastomer composition composed of (A) an organopolysiloxane having at least two Si-bonded alkenyl groups and a diorganosiloxane unit in one molecule, (B) an organopolysiloxane resin expressed by the average unit formula: (R 1 3 SiO 1/2 ) x (SiO 4/2 ) 1.0 (R 1 is a substituted or unsubstituted univalent hydrocarbon group; and x is 0.5-1.0), (C) an organopolysiloxane having at least two Si-bonded hydrogen atoms in one molecule and (D) a catalyst for hydrosilylation reaction. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a curable organopolysiloxane composition which can be well bonded to a non-washed aluminum die-casting or PPS even when cured at a low temperature such as 100°C. SOLUTION: The curable organopolysiloxane composition at least includes (A) (a1) an organopolysiloxane having at least one alkoxysilyl-containing group bonded to a silicon atom and at least 0.5 alkenyl group on average in a molecule or a mixture of the (a1) component and (a2) an organopolysiloxane having at least two alkenyl groups in a molecule and not having the alkoxysilyl-containing group, (B) an organopolysiloxane having at least two silicon atom-bound hydrogen atoms in a molecule, (C) an organosilicon compound having at least one alkoxy group bonded to a silicon atom in a molecule and not having the alkoxysilyl-containing group, and (D) a catalyst for hydrosilylation reaction. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a room temperature-curable organopolysiloxane composition forming a cured product which sufficiently adheres to a substrate with which it is brought into contact on the way of curing and which causes interfacial peeling from the substrate even after a prolonged lapse of time, and electric/electronic apparatuses which permit removal of the cured product from electric circuits or electrodes even after a prolonged lapse of time and can be repaired or recycled. SOLUTION: The room temperature-curable organopolysiloxane composition comprises (A) an organopolysiloxane bearing in one molecule two trialkoxysilyl-containing groups bonded to a silicon atom in the molecular chain, (B) a diorganodialkoxysilane or a partial hydrolyzate condensate thereof, (C) an organopolysiloxane bearing in one molecule at least one phenyl group bonded to a silicon atom in the molecular chain and no alkoxyl groups bonded to the silicone atom, and (D) a titanium chelate catalyst. The electric/electronic apparatuses have electric circuits or electrodes thereof sealed or coated with the cured product formed of the composition. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To obtain a photocurable organic polymer composition which quickly cures by photoirradiation with ultraviolet rays, an electron beam, and the like, to form a cured product having moistureproofness, thereafter exhibits adhesiveness by aging, and particularly can prevent the corrosion of an electoroconductive part made of a metal in electric/electronic equipment by a corrosive substance and the stray current corrosion by migration when coated and cured on the electroconductive part made of the metal in the electric/electronic equipment to be exposed to the corrosive substance and moisture. SOLUTION: This photocurable organic polymer composition comprises at least (A) a liquid organic polymer having at least one hydroxy group in the molecule, (B) an organosilicon compound represented by the formula (wherein R 1 is hydrogen or methyl group; R 2 is a 1-10C divalent hydrocarbon group; R 3 is a monovalent hydrocarbon group; R 4 is an alkyl group; and (a) is 0 or 1), (C) a catalyst for condensation reaction, (D) a photopolymerization initiator, and (E) a metal corrosion inhibitor. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation:要解决的问题为了获得通过紫外线,电子束等的光照射快速固化的光固化性有机聚合物组合物,以形成具有防潮性的固化物,其后通过老化显示出粘合性,特别是可以防止 在电气/电子设备中由腐蚀性物质形成的金属导电部件的腐蚀和在电气/电子设备中由金属制成的导电部件上涂覆和固化时的杂散电流腐蚀被暴露于腐蚀性 物质和水分。 解决方案:该可光固化的有机聚合物组合物至少包含(A)在分子中具有至少一个羟基的液体有机聚合物,(B)由下式表示的有机硅化合物(其中R 1 SP >是氢或甲基; R 2是一个1-10C的二价烃基; R 3是一价烃基; R SP 4是 烷基;(a)为0或1),(C)缩合反应用催化剂,(D)光聚合引发剂,(E)金属缓蚀剂。 版权所有(C)2005,JPO&NCIPI