摘要:
A process for producing a silicone polymer comprising a step of subjecting, to hydrolysis and polycondensation reaction, a silane compound mixture containing 35 to 100% by mol of a silane compound represented by the general formula (I): R′m(H)kSiX4−(m+k) (I) (wherein X is a hydrolysable and polycondensable group, e.g., a halogen atom (e.g., chlorine or bromine) or —OR; R is an alkyl group of 1 to 4 carbon atoms or an alkyl carbonyl group of 1 to 4 carbon atoms; R′ is a non-reactive group, e.g., an alkyl group of 1 to 4 carbon atoms or an aryl group (e.g., a phenyl group); “k” is 1 or 2; “m” is 0 or 1; and “m+k” is 1 or 2), and further subjecting the resultant product to hydrosilylation reaction with a hydrosilylation agent.
摘要:
A process for producing a silicone polymer comprising a step of subjecting, to hydrolysis and polycondensation reaction, a silane compound mixture containing 35 to 100% by mol of a silane compound represented by the general formula (I): R′m(H)kSiX4−(m+k) (I) (wherein X is a hydrolysable and polycondensable group, e.g., a halogen atom (e.g., chlorine or bromine) or —OR; R is an alkyl group of 1 to 4 carbon atoms or an alkyl carbonyl group of 1 to 4 carbon atoms; R′ is a non-reactive group, e.g., an alkyl group of 1 to 4 carbon atoms or an aryl group (e.g., a phenyl group); “k” is 1 or 2; “m” is 0 or 1; and “m+k” is 1 or 2), and further subjecting the resultant product to hydrosilylation reaction with a hydrosilylation agent.
摘要:
There is here disclosed a thermosetting resin composition containing, as essential components, (a) an epoxy resin, (b) a curing agent, and (c) a silicone polymer having a bifunctional siloxane unit represented by the formula R2SiO2/2 (wherein R is the same or a different organic group) in the molecule.
摘要:
Disclosed is an adhesive composition, comprising, as essential components, a thermosetting resin component A and a high-molecular component B which are evenly compatible and miscible with each other at a temperature of 5 to 40° C. without being separated from each other, and a curing agent component C,wherein after the adhesive composition comes into contact with an adherend and after the thermosetting resin component A is cured, the thermosetting resin component A is separated, in the adhesive composition, into particulate structures wherein the concentration of the thermosetting resin component A is larger than that in the surrounding of the particulate structures, and further the particulate structures are formed in a larger amount near a surface of the composition which contacts the adherend than inside the adhesive composition. The adhesive composition can be used in thin-film bonding. it is possible to provide an adhesive composition excellent in heat resistance, crack resistance, adhesive property, and exudation resistance, which is property that the adhesive less exudes.
摘要:
A product design CAD data reconstruction unit 50 reconstructs product design CAD data used for product evaluation regarding an initial design so as to fulfill restrictive conditions obtained from the product evaluation based on a product structure for the initial design. The reconstructed product design CAD data is stored in a product design CAD data database 90. Upon reception of a corrected design obtained by correcting the initial design, the product design CAD data for the initial design is read from the product design CAAD data database 90, and the product design CAD data is corrected along a design surface of the corrected design.
摘要:
A digital carrier signal demodulation circuit is used in the carrier digital transmission system utilizing a 16-ary APK (Amplitude and Phase Keying) signal produced by the vector superposition of a second path signal consisting of a four-phase shift keying signal upon each phase of a first path signal consisting of a four-phase shift keying signal, the level of the second path signal being lower than that of the first path signal. The received 16-ary APK signal is detected with the reference carrier extracted from the received signal, regenerated to reproduce the base band pulses of the first path signal. The recovered base band pulses remodulate the reference carrier to produce the first path signal. The phases of the recovered first path signal and received signal are compared to phase lock a voltage controlled oscillator thereby producing the reference character.