摘要:
The invention features novel derivatives of K-252a, as well as novel bis-N-substituted derivatives of staurosporine. The invention also features a method for treating diseased neuronal cells involving the administration of either the novel staurosporine derivatives or specified functional derivatives of K-252a.
摘要:
The invention features novel derivatives of K-252a, as well as novel bis-N-substituted derivatives of staurosporine. The invention also features a method for treating diseased neuronal cells involving the administration of either the novel staurosporine derivatives or specified functional derivatives of K-252a.
摘要:
The invention features novel derivatives of K-252a, as well as novel bis-N-substituted derivatives of staurosporine. The invention also features a method for treating diseased neuronal cells involving the administration of either the novel staurosporine derivatives or specified functional derivatives of K-252a.
摘要:
The invention features novel derivatives of K-252a, as well as novel bis-N-substituted derivatives of staurosporine. The invention also features a method for treating diseased neuronal cells involving the administration of either the novel staurosporine derivatives or specified functional derivatives of K-252a.
摘要:
An apparatus for polishing an edge surface of a glass substrate for magnetic recording media. The apparatus includes a grindstone including abrasive grains mixed with a resin. The grindstone is configured to polish at least the edge surface of the glass substrate. The grindstone has a reentrant groove with a bottom surface and sidewall surfaces such that the bottom surface of the reentrant groove contacts the edge surface of the glass substrate and the sidewall surfaces of the reentrant groove contacts chamfered sidewalls of the glass substrate. The reentrant groove and sidewall surfaces are formed in the resin of the grindstone by pressing the glass substrate into the resin of the grindstone with a force higher than a pressing force during polishing.
摘要:
It is an object of the present invention to provide a clathrate that suppresses a curing reaction at low temperature to promote an improvement in storage stability (one-component stability), and can effectively cure a resin by heating treatment. A clathrate suitable for the clathrate is a clathrate containing (b1) at least one selected from the group consisting of an aliphatic polyvalent carboxylic acid, 5-nitroisophthalic acid, 5-tert-butylisophthalic acid, 5-hydroxyisophthalic acid, isophthalic acid, and benzophenone-4,4′-dicarboxylic acid; and (b2) at least one selected from the group consisting of an imidazole compound represented by the following formula (I), and 1,8-diazabicyclo[5.4.0]undecene-7, at a molar ratio of 1:1.
摘要:
It is an object of the present invention to provide a clathrate that suppresses a curing reaction at low temperature to promote an improvement in storage stability (one-component stability), and can effectively cure a resin by heating treatment. A clathrate suitable for the clathrate is a clathrate containing (b1) at least one selected from the group consisting of an aliphatic polyvalent carboxylic acid, 5-nitroisophthalic acid, 5-tert-butylisophthalic acid, 5-hydroxyisophthalic acid, isophthalic acid, and benzophenone-4,4′-dicarboxylic acid; and (b2) at least one selected from the group consisting of an imidazole compound represented by the following formula (I), and 1,8-diazabicyclo[5.4.0]undecene-7, at a molar ratio of 1:1.
摘要:
A method for etching doughnut-type glass substrates, which comprises laminating a plurality of doughnut-type glass substrates each having a circular hole at its center so that the circular holes form a cylindrical hole, and applying an etching treatment to inner peripheral edge surfaces of the plurality of the laminated doughnut-type glass substrates all at once by means of an etching liquid or an etching gas, wherein the etching liquid or the etching gas is supplied from one end of the cylindrical hole, made to flow in the cylindrical hole, and discharged from the other end of the cylindrical hole so that it is not in contact with exposed main surfaces of the doughnut-type glass substrates at both ends of the laminate consisting of the doughnut-type glass substrates.
摘要:
A curing catalyst (clathrate compound) for which the curing reaction is suppressed at low temperatures, allowing an improvement in the one-pot stability, but which can effectively cure a resin upon heat treatment. The clathrate compound includes at least an isophthalic acid compound represented by Formula (I), where R1 represents a C1 to C6 alkyl group, a C1 to C6 alkoxy group, a nitro group, or a hydroxyl group, and an imidazole compound represented by a Formula (II) where R2 represents a hydrogen atom, a C1 to C10 alkyl group, a phenyl group, a benzyl group, or a cyanoethyl group, and R3 to R5 each independently represents a hydrogen atom, a nitro group, or a halogen atom, or a C1 to C20 alkyl group, phenyl group, benzyl group, or C1 to C20 acyl group that may have a substituent.
摘要:
It is to improve the storage stability of a sealant, to retain the flowability of the sealant when sealing, and to achieve an effective curing rate of the sealant by heating to be applicable as a sealant for delicate semiconductors.It is an epoxy resin composition for sealing a semiconductor, comprising the following component (A) and component (B). (A) an epoxy resin, (B) a clathrate complex comprising (b1) an aromatic carboxylic acid compound, and (b2) at least one imidazole compound represented by formula (II) (wherein R2 represents a hydrogen atom, etc.; R3 to R5 represent a hydrogen atom, etc.).