摘要:
The present invention is a method for producing a thermal-shock-resistant cured product, the method involving: a condensation step of preparing a cured-product precursor by subjecting monomers represented by general formulae (1) to (5) to copolycondensation at a specific rate in the presence of an acid catalyst; and a curing step of curing the cured-product precursor by polymerizing at least a portion of ethylenically unsaturated bonds in the cured-product precursor. Also, the present invention is a cured product prepared by said method. (In formulae (1) to (5): (X) is a siloxane bond producing group; R1, R2, and R4 are each a group selected from among a hydrogen atom, an alkyl group, an aralkyl group, a cycloalkyl group, a cycloaralkyl group, an aryl group, and a group having an ethylenically unsaturated bond; R3 and R5 are each a group selected from among a hydrogen atom, an alkyl group, an aralkyl group, a cycloalkyl group, a cycloaralkyl group, and an aryl group; and at least one of R1, R2, and R4 is a group having an ethylenically unsaturated bond.)
摘要:
The present invention is a method for manufacturing a reactive polysiloxane solution, the method comprising: a condensation process for hydrolyzing and copolycondensing a starting compound containing an organosilicon compound having a reactive functional group selected from a (meth)acryloyl group and an oxetanyl group, and also having a siloxane bond-forming group to synthetize a reactive polysiloxane represented by general formula (1); a dissolution process for dissolving the obtained reactive polysiloxane in an organic solvent for water washing; and a washing process for bringing the obtained organic solution and water in contact with each other to remove the water layer from the mixed liquid. The organic solvent for water washing that is used is a compound (e.g., propylene glycol mono butyl ether, 1-pentanol) including a hydroxyl group, having a boiling point at 1 atm of 110° C.-200° C., and a solubility of 10 g or less in 100 g of water at 20° C.
摘要:
The present invention is a method for producing solvent-soluble polysiloxanes which includes a condensation process of subjecting a raw material having siloxane-bond-forming groups to hydrolytic copolycondensation in the presence of a catalyst to synthesize a reactive polysiloxane represented by general formula (1), the raw material containing both an organosilicon compound (S1) having a (meth)acryloyl group and siloxane-bond-forming groups and at least one silicon compound (S2) selected from among tetraalkoxysilanes and tetrahalogenosilanes, wherein in the condensation process, the organosilicon compound (S1) and silicon compound (S2) are used at a (S2)/(S1) molar ratio of 1.8 or less, and the condensation process is conducted by adding gradually a mixture of the silicon compound (S2) and the catalyst to a raw material liquid containing the organosilicon compound (S1) and water, while keeping the molar ratio of the amount of the silicon compound (S2) to the amount of the organosilicon compound (S1) within the range of 0.001/min to 0.3/min.
摘要:
The present invention is a method for producing solvent-soluble polysiloxanes which includes a condensation process of subjecting a raw material having siloxane-bond-forming groups to hydrolytic copolycondesation in the presence of a catalyst to synthesize a reactive polysiloxane represented by general formula (1), the raw material containing both an organosilicon compound (S1) having a (meth)acryloyl group and siloxane-bond-forming groups and at least one silicon compound (S2) selected from among tetraalkoxysilanes and tetrahalogenosilanes, wherein in the condensation process, the organosilicon compound (S1) and silicon compound (S2) are used at a (S2)/(S1) molar ratio of 1.8 or less, and the condensation process is conducted by adding gradually a mixture of the silicon compound (S2) and the catalyst to a raw material liquid containing the organosilicon compound (S1) and water, while keeping the molar ratio of the amount of the silicon compound (S2) to the amount of the organosilicon compound (S1) within the range of 0.001/min to 0.3/min.
摘要:
The object of the present invention is to provide an organosilicon compound having an oxetanyl group, which has a high proportion of an inorganic part in the structure, which, after production thereof, is stable with no gelling, and which has excellent storage stability when it is formed into a composition, and a production method thereof and a curable composition. The organosilicon compound is a compound having an oxetanyl group obtained by a method including a process in which a silicon compound A represented by the formula (1) and a silicon compound B having four siloxane bond-forming groups are subjected to hydrolysis and condensation at a ratio of 0.3 to 2.8 mol of silicon compound B based on 1 mol of silicon compound A. [In the formula, R0 is an organic group having an oxetanyl group, R1 is an alkyl group having 1 to 6 carbon atoms, an aralkyl group having 7 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, or an organic group having an oxetanyl group, X is a hydrolyzable group, and n is 0 or 1.]
摘要:
The present invention has an object to provide a polysiloxane which is a liquid substance having low viscosity, is excellent in curing workability, and has excellent heat resistance in an obtained cured material, and to a production method of a cured material using the polysiloxane. Specifically disclosed is a polysiloxane which is obtained by hydrolysis and polycondensation of a silicon compound having three hydrolyzable groups, a silicon compound having two hydrolyzable groups and a silicon compound having one hydrolyzable group, and is characterized by containing a hydrosilylatable carbon-carbon unsaturated group, a hydrosilyl group and an alkoxysilyl group, and having a number average molecular weight of 500 to 20,000.
摘要:
A plasma etching method includes the step of performing a plasma etching on a silicon-containing dielectric layer formed on a substrate to be processed by using a plasma, while using an organic layer as a mask. In addition, the plasma is generated from a processing gas at least including a first fluorocarbon gas which is an unsaturated gas; a second fluorocarbon gas which is an aliphatic saturated gas expressed by CmF2m+2 (m=5, 6); and an oxygen gas. Further, a computer-readable storage medium for storing therein a computer executable control program is provided where the control program, when executed, controls a plasma etching apparatus to perform the above plasma etching method.
摘要:
A plasma etching is performed on a substrate having a pattern wherein an interval between neighboring openings formed on a resist mask is equal to or less than 200 nm, wherein the etching is performed by converting a processing gas comprising an active species generating gas which includes a compound having carbon and fluorine, and a nonreactive gas which includes xenon gas into a plasma. The nonreactive gas further includes argon gas.
摘要:
A plasma etching method includes the steps of exciting an etching gas introduced in a processing vessel into a plasma, the etching gas including 1,1,1,4,4,5,5,5-octafluoro-2-pentyne, and carrying out a plasma etching on a film on a target object accommodated in the processing vessel via opening patterns of a resist mask on the film. Therefore, it is possible to perform plasma etching having a high selectivity to resist and/or suppressing the etch stop.
摘要:
The present curable composition comprises an organosilicon compound produced by hydrolysis copolycondensation of (A) a silicon compound R0Si(R1)nX13-n [wherein R0 represents a (meth)acryloyl group; and X1 represents a hydrolyzable group] and (B) a silicon compound SiY14 [wherein Y1 represents a siloxane-bond forming group] under an alkaline condition at a ratio of compound (A) to compound (B) of 1:(0.3 to 1.8) by mol. The present process for producing an organosilicon compound comprises a reaction process of conducting alcohol exchange reaction of a silicon compound. SiY24 [wherein Y2 represents a siloxane-bond forming group] in 1-propanol to produce a composition; and a condensation process of adding a silicon compound R0Si(R1)nX23-n [wherein R0 represents a (meth)acryloyl group; and X2 represents a hydrolyzable group] to the composition to perform the hydrolysis copolycondensation of the silicon compounds under alkaline conditions.