摘要:
A method for producing an isocyanate group-containing siloxane compound is provided. In this method, a halogenated siloxane compound represented by the following general formula (1): or the following general formula (2) wherein R1, R2, R3, and R4 are independently hydrogen atom, a monovalent hydrocarbon group containing 1 to 8 carbon atoms, or a siloxy group represented by OSiR5R6R7 wherein R8, R6, and R7 are a monovalent hydrocarbon group containing 1 to 8 carbon atoms, X is a halogen atom, n is an integer of 1 to 10, a is 0, 1, or 2, and b is an integer of 2 to 9; is reacted with a cyanate salt represented by the following general formula (3): Mm+(OCN)m (3) wherein M represents an alkali metal or an alkaline earth metal, and m is 1 or 2. The isocyanate group-containing siloxane compound produced is represented by the following general formula (4): or the following general formula (5): wherein R1, R2, R3, R4, n, q, and a are as defined above.
摘要:
The object of the present invention is to provide a nano-scale molecular assembly such as a conductive nano-wire. Specifically, there is provided an electrolytic apparatus for forming a molecular assembly, including two electrodes and an electrolytic cell holding an electrolyte and the two electrodes, wherein the gap between the two electrodes is from 1 nm to 100 μm, by allowing the electrolytic cell to hold an electrolyte containing molecules that is to constitute the molecular assembly, and applying a voltage across the two electrodes in the state wherein the electrolyte and the two electrodes are in contact.
摘要:
Novel cyclic siloxane compounds have both an aliphatic unsaturation-containing organic group and fluorinated alkyl groups within the molecular structure. When used to form silicone fluids and rubbers, they are useful as a modifier for giving novel physical properties thereto and when used as polymerizable monomers, they are effective for improving the performance of polymers or forming polymers with novel physical properties.
摘要:
By reacting α,β-unsaturated carboxylic esters with hydrosilanes or hydrosiloxanes in the presence of a catalytic amount of tris(pentafluorophenyl)borane, silyl ketene acetals or disilyl ketene acetals with high purity are produced in high yields.
摘要:
A silane compound of the following formula (1) having two or more protected functional groups A-R—Si(CH3)nX3-n (1) wherein A represents a group of the following formula wherein R1, R2 and R3 each independently represent a monovalent hydrocarbon group having 1 to 10 carbon atoms, a is an integer of 1 to 10, and b is an integer of 1 to 10, or wherein R1, R2 and R3 are as defined above, R represents a linear or branched, divalent hydrocarbon group having 2 to 10 carbon atoms, X represents a halogen atom or an organoxy group having 1 to 10 carbon atoms, and n is 0, 1 or 2 is prevented from the reaction of the functional groups per self when undergoing modification or treatment. When the protection is removed after introduction of the protected functional groups, quantitative and efficient introduction of the two or more functional groups is ensured, resulting in more developed effects of modification and addition.
摘要:
A branched tetrasiloxane is prepared by preforming a liquid mixture of a disiloxane compound, an alcohol and an acid catalyst, adding a trialkoxysilane compound to the mixture for reaction, and adding water to the reaction mixture for co-hydrolysis, thereby forming a branched tetrasiloxane. The method is capable of preparing a branched tetrasiloxane, especially methyltris(trimethylsiloxy)silane having a sufficiently high purity to use as cosmetic oil in good yields.
摘要:
Chlorosilane compounds having a thexyl group which is a bulky substituent group are novel. The compounds are useful silylating agents because stable silylated products are obtained due to the bulky substituent group.