Abstract: There is provided a thermosetting powder coating material capable of forming a cured product having excellent workability at coating and high plasticity as well as heat resistance, resulting in heat resistance and crack resistance at bending processing. (A) denotes a bisphenol type epoxy resin having epoxy equivalent weight of 600 to 800 g/eq (not including 800 g/eq), (B) a rubber-modified epoxy resin, (C) a bisphenol type phenyl resin curing agent (D) a compound for activating (C), (D1) an imidazole compound and (D2) an amine-epoxy adduct type compound. The thermosetting powder coating material is composed of a finely pulverized composition. The composition comprises (A), (C) and (D) but does not comprise (B). (D) comprises (D1) and (D2), and a weight ratio of (D2) with respect to (D1) is 1.0 or more and 3.7 or less when (D1) is 1.

Abstract: Provided is a method for liberating sugar chains from a glycoprotein, including: a step of brining a reaction solution which contains hydroxylamines (a) and a basic reagent (b) into contact with the glycoprotein to obtain a mixed solution of sugar chains liberated from the glycoprotein and the reaction solution.

Abstract: Provided is a method for preparing a sugar chain, including: a labeling step of adding a labeling reagent to a sugar chain-containing sample which contains a sugar chain to obtain a labeled product containing a labeled substance of the sugar chain, in which a reaction environment of the labeling reagent and the sugar chain contains water in the labeling step.

Abstract: Provided are a method for preparing a glycan from a glycoprotein, and a kit and a device for preparing a glycan from a glycoprotein. The method includes (I) a step of obtaining a glycan-containing sample by bringing a glycan releasing solution that contains a hydroxylamine compound and a basic reagent into contact with the glycoprotein and releasing the glycan from the glycoprotein; (II) a step of adsorbing a glycan having a length of a monosaccharide or more on a purifying agent for purifying the glycan by bringing the glycan-containing sample into contact with the purifying agent, which is composed of a compound having a betaine structure; and (III) a step of eluting the glycan from the purifying agent.

Abstract: A purification agent which includes a compound having a betaine structure, and which is for a sugar chain having a length equal to or longer than that of a monosaccharide or for a glycopeptide having a sugar chain having a length equal to or longer than that of a monosaccharide.

Abstract: There is provided a thermosetting powder coating material capable of forming a cured product having excellent workability at coating and high plasticity as well as heat resistance, resulting in heat resistance and crack resistance at bending processing. (A) denotes a bisphenol type epoxy resin having epoxy equivalent weight of 600 to 800 g/eq (not including 800 g/eq), (B) a rubber-modified epoxy resin, (C) a bisphenol type phenyl resin curing agent (D) a compound for activating (C), (D1) an imidazole compound and (D2) an amine-epoxy adduct type compound. The thermosetting powder coating material is composed of a finely pulverized composition. The composition comprises (A), (C) and (D) but does not comprise (B). (D) comprises (D1) and (D2), and a weight ratio of (D2) with respect to (D1) is 1.0 or more and 3.7 or less when (D1) is 1.

Abstract: A purification agent which includes a compound having a betaine structure, and which is for a sugar chain having a length equal to or longer than that of a monosaccharide or for a glycopeptide having a sugar chain having a length equal to or longer than that of a monosaccharide.

Abstract: Provided is a method for preparing a sugar chain, including: a labeling step of adding a labeling reagent to a sugar chain-containing sample which contains a sugar chain to obtain a labeled product containing a labeled substance of the sugar chain, in which a reaction environment of the labeling reagent and the sugar chain contains water in the labeling step.

Abstract: Provided is a method for liberating sugar chains from a glycoprotein, including: a step of brining a reaction solution which contains hydroxylamines (a) and a basic reagent (b) into contact with the glycoprotein to obtain a mixed solution of sugar chains liberated from the glycoprotein and the reaction solution.

Abstract: An epoxy resin powder coating material is provided, by which, while workability and coating property are not deteriorated, a coating film having excellent heat cycle resistance can be formed also on recent metal parts having a configuration of intricately combining a plurality of different kinds of metals of different material qualities and required to have high-standard performance. The epoxy resin powder coating material is manufactured by blending a spherical inorganic particle and acryl-based core shell type particle having an average particle diameter of 16 to 50 ?m in a bisphenol A-type epoxy resin, wherein an average particle diameter of the acryl-based core shell type particle is preferably 0.1 to 0.4 ?m.

Abstract: Provided is a method for preparing a glycoprotein sugar chain including: an isolation step of acting a sugar chain-isolating enzyme on a sample which contains a glycoprotein fixed to a solid phase in a container to obtain an isolated product which contains a sugar chain; and a labeling step of adding a labeling reagent to the isolated product in the container to obtain a labeled product which contains a labeled substance of the sugar chain.

Abstract: An epoxy resin powder coating material is provided, by which, while workability and coating property are not deteriorated, a coating film having excellent heat cycle resistance can be formed also on recent metal parts having a configuration of intricately combining a plurality of different kinds of metals of different material qualities and required to have high-standard performance. The epoxy resin powder coating material is manufactured by blending a spherical inorganic particle and acryl-based core shell type particle having an average particle diameter of 16 to 50 ?m in a bisphenol A-type epoxy resin, wherein an average particle diameter of the acryl-based core shell type particle is preferably 0.1 to 0.4 ?m.

Abstract: A laser beam absorbing resin composition is disclosed which includes 100 parts by weight of a resin, and 1-100 parts by weight of composite particles having an average particle diameter of 0.1-50 .mu.m and each including a particulate, laser beam absorbing inorganic substance, and a colorant physically bonded directly to the inorganic substance and capable of discoloring upon being heated at a temperature of 250.degree. C. or more, the weight ratio of the colorant to the inorganic substance being in the range of 1:99 to 50:50. By irradiating a shaped, hardened body of the above composition with a laser beam, the colorant is thermally decomposed, so that the color of the irradiated surface is changed and becomes discriminative from that of non-irradiated surface.

Abstract: A laser beam absorbing resin composition is disclosed which includes 100 parts by weight of a resin, and 1-100 parts by weight of composite particles having an average particle diameter of 0.1-50 .mu.m and each including a particulate, laser beam absorbing inorganic substance, and a colorant physically bonded directly to the inorganic substance and capable of discoloring upon being heated at a temperature of 250.degree. C. or more, the weight ratio of the colorant to the inorganic substance being in the range of 1:99 to 50:50. By irradiating a shaped, hardened body of the above composition with a laser beam, the colorant is thermally decomposed, so that the color of the irradiated surface is changed and becomes discriminative from that of non-irradiated surface.

Abstract: A varistor material having a non-linear coefficient of at least 30 and a varistor voltage of at least 800 V/mm is disclosed. The varistor is produced by a method including commingling an admixture of ZnO and a manganese compound while preventing the admixture from contacting with a surface containing an element belonging to group IIIb of the Periodic Table. The resulting mixture is calcined and then pulverized while preventing the contact with a IIIb element-containing surface to obtain a pulverized product having a content of impurity compounds of a IIIb element of not greater than 20 ppm by weight. The pulverized product is molded and sintered at such a temperature as to obtain the varistor formed from particles with an average particle size of not greater than 5 .mu.m.

Abstract: A varistor having a non-linear coefficient of at least 40 and improved stability for DC stress is produced by a method including a step of mixing ZnO powder with a solvent solution of Mn and Pb compounds, a step of calcining the resultig mixture, and a step of pulverizing the calcined product to obtain a pulverized product. These steps are performed while preventing the contamination with a Group IIIb or Ia element, so that the pulverized product has MnO and PbO contents of 3-7 mole % and 0.003-0.01 mole %, respectively, and a content of impurity compounds of a IIIb or Ia element of not greater than 20 ppm by weight. The pulverized product is molded and sintered to obtain the varistor.

Abstract: A varistor material is disclosed which has a composition consisting essentially of 93-97 mole % of ZnO and 3-7 mole % of MnO, a non-linear coefficient .alpha. of at least 20 and such a bulk density as to provide a porosity of greater than 15% but not greater than 50%, wherein the porosity is defined as follows:Porosity (%)=(1-d/d.sub.0).times.100wherein d represents the bulk density and d.sub.0 represents the theoretical density of the single phase pure ZnO. The varistor material is produced by sintering a mixture containing ZnO powder and 3-7 mole %, based on ZnO+MnO, of a maganese compound at a temperature of 1100.degree.-1350.degree. C. under a condition so that the resulting sintered body has the above porosity.