摘要:
The present invention relates to novel alkylamino-substituted organosilicon compounds and a method for their preparation. The described process involves a dehydrohalogenation reaction between a triorganosilylalkyl halide and an aminophenol in the presence of a hydrogen halide acceptor.
摘要:
A curable silicone composition comprising: (A) an organopolysiloxane that has a branched molecular structure and contains in one molecule at least two univalent hydrocarbon groups with phenolic hydroxyl groups therein; (B) a linear-chain organopolysiloxane having at least two univalent hydroxyl groups with epoxy groups that are free of aromatic rings; and (C) a curing accelerator.
摘要:
A method of manufacturing a semiconductor device sealed in a cured silicone body by placing a semiconductor device into a mold and subjecting a curable silicone composition that fills the spaces between said mold and said semiconductor device to compression molding, wherein the curable silicone composition comprises the following components: (A) an organopolysiloxane having at least two alkenyl groups per molecule; (B) an organopolysiloxane having at least two silicon-bonded hydrogen atoms per molecule; (C) a platinum-type catalyst; and (D) a filler, wherein either at least one of components (A) and (B) contains a T-unit siloxane and/or Q-unit siloxane. By the utilization this method, a sealed semiconductor device is free of voids in the sealing material, and a thickness of the cured silicone body can be controlled.
摘要:
A room-temperature-curable organopolysiloxane composition comprising: (A) 100 parts by weight of an organopolysiloxane having a viscosity of from 100 to 500,000 mPa·s at 25° C. and having in one molecule 1.5 or more end groups represented by the general formula: (X)aR13-aSi—, where each X is independently a hydroxyl group or a hydrolyzable group, each R1 is independently a monovalent hydrocarbon group or a halogen-substituted monovalent hydrocarbon group, and a is 1, 2, or 3; (B) 0.01 to 40 parts by weight of a cross-linking agent selected from a silane or a siloxane oligomer where the cross-linking agent has three or more silicon-bonded hydrolyzable groups per molecule; and (C) microparticles of thermoplastic resin containing a platinum compound in such an amount that the content of metallic platinum in component (C) is within the range of 0.01 to 5 wt. %, where the microparticles have an average diameter from 0.1 to 20 μm, component (C) is present in an amount sufficient to provide 1 to 2,000 ppm of metallic platinum in the composition; and (D) 5 to 300 parts by weight of an inorganic powder.
摘要:
A silicone gel composition comprising: (A) 100 parts by weight of an organopolysiloxane containing at least two alkenyl groups per molecule and having a viscosity of 0.01 to 100 Pa.s at 25.degree. C.; (B) an organopolysiloxane containing at least two silicon-bonded hydrogen atoms per molecule and having a viscosity of 0.001 to 10 Pa.s at 25.degree. C. in an amount sufficient to provide from 0.2 to 5 moles of silicon-bonded hydrogen atoms per one mole of alkenyl groups in component (A); (C) 0.01 to 15 parts by weight of a silica powder having a specific surface area of at least 50 m.sup.2 /g; (D) 0.0001 to 1.0 part by weight of a diamine compound represented by the following general formula: R.sup.1.sub.2 N--R.sup.2 --NR.sup.1.sub.2 wherein each R.sup.1 is independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R.sup.2 is an alkylene group having 2 to 4 carbon atoms; and (E) a hydrosilylation catalyst in a catalytic quantity; wherein the weight ratio of component (D) to component (C) in said gel composition is from 0.0005 to 0.05; and the silicone gel composition cures to form a silicone gel having a loss elastic modulus at 25.degree. C. and at a shear frequency of 0.1 Hz of from 1.0.times.10.sup.2 to 1.0.times.10.sup.4 Pa, and a complex modulus of elasticity less than 1.0.times.10.sup.5 Pa.
摘要:
An organocyclosiloxane having utility as a coupling agent is disclosed said organocyclosiloxane having the general formula ##STR1## wherein R.sup.1 is independently selected from monovalent hydrocarbon groups having 1 to 8 carbons, R.sup.2 is selected from the group consisting of an alkoxy group and an alkoxysilylalkyl group, R.sup.3 is an organofunctional group selected from the group consisting of glycidoxyalkyl, methacryloxyalkyl, N-(trialkylsilyl)aminoalkyl (hydroxyphenyl)alkyl and haloalkyl x is 1 to 6 and y is 1 to 6, with the proviso that x+y is an integer having a value of 3 to 8.
摘要:
The present invention relates to novel alkylamino-substituted organosilicon compounds and a method for their preparation. The described process involves a dehydrohalogenation reaction between a triorganosilylalkyl halide and an aminophenol in the presence of a hydrogen halide acceptor.
摘要:
A water resistant epoxy resin composition is disclosed, said composition comprising an epoxy resin, a compound having at least two phenolic hydroxyl groups sufficient to cure the epoxy resin component, an aromatic nitrogen-containing silane coupling agent and an inorganic filler. The epoxy resin composition is well suited for use as a sealant for electronic components.