Abstract: Disclosed is a method for manufacturing a glass article including a through hole in a wall of a glass tube. The method includes forming the through hole by heating the glass tube from above with the glass tube arranged such that a tube axis is parallel to a horizontal direction.

Abstract: Disclosed is an apparatus for manufacturing a glass article obtained by heat-processing a glass tube. The apparatus includes a rotation mechanism that rotates the glass tube, a heating device that heats a portion of the glass tube located toward an end of the glass tube rotated by the rotation mechanism, a gripping mechanism that grips the end of the glass tube heated by the heating device, a movement mechanism that moves the gripping mechanism; and a blower that blows air into the glass tube. The glass tube is melt-cut by moving the gripping mechanism, which is gripping the end of the glass tube, with the movement mechanism in a direction that pulls off the end of the glass tube. The glass tube is melt-cut while the blower is operating to form an opening in a melt-cut end surface of the glass tube.

Abstract: Provided is a borosilicate glass for a pharmaceutical container which has good processability in spite of not including BaO. The borosilicate glass for a pharmaceutical container includes SiO2, Al2O3, B2O3, and R2O (R is one or more kinds selected from Li, Na, and K) as essential components, in which BaO is not substantially included, and a water content in glass is 0.30 to 0.80/mm in terms of ?-OH value.

Abstract: Provided is a cutting method for a tube glass, including: a heating step of heating a preset cut portion (CP) of the tube glass (G2) by radiating laser light (L11) to the preset cut portion (CP); an inner crack region forming step of forming an inner crack region (C1) including one or a plurality of cracks through multiphoton absorption that occurs in an irradiation region of laser light (L12) by radiating the laser light (L12) having a focal point adjusted to an inside of the preset cut portion (CP); and a cooling step of cooling the preset cut portion (CP), to thereby cause the cracks to propagate in the inside of the preset cut portion (CP).

Abstract: A cutting method for a tube glass (G2) includes a crack forming step of forming a crack (C) in an inside of the tube glass (G2) through multiphoton absorption that occurs in an irradiation region of laser light (L) by irradiating in the inside of the tube glass (G2) with the laser light (L) having a focal point adjusted to the inside of the tube glass (G2). The crack forming step includes moving a position of the focal point of the laser light from an inner surface (G2b) side to an outer surface (G2a) side in the inside of the tube glass (G2), to thereby cause the crack (C) to propagate in the inside of the tube glass (G2).

Abstract: Disclosed is a selective ester production process of an alcoholic hydroxyl group, which proceeds under chemically mild conditions, while having adequate environmental suitability, operability and economical efficiency. Specifically disclosed is a process for producing an ester compound, which is characterized in that an alcohol and a carboxylic acid ester compound are reacted in the presence of a compound containing zinc element, thereby selectively acylating a hydroxyl group of the alcohol.

Abstract: The invention relates to a method for producing an azoline compound represented by the general formula (3): wherein R1 represents an optionally substituted hydrocarbon group, an optionally substituted alkoxy group, an optionally substituted alkoxycarbonyl group, a halogen atom, a substituted amino group, a substituted carbamoyl group or an optionally substituted heterocyclic group; R3, R4, R5 and R6 may be the same or different and each represents a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted alkoxy group, an optionally substituted alkoxycarbonyl group, a halogen atom, a substituted amino group, a substituted carbamoyl group or an optionally substituted heterocyclic group; two arbitrary groups selected from R3, R4, R5 and R6 may bond to each other to form a ring; and Z1 represents an oxygen atom, a sulfur atom or a selenium atom; comprising reacting a carboxylic acid or a carboxylic acid derivative represented by the general formula (1): R1CO2R2 ??(1) wherein R

Abstract: The invention relates to a method for producing an azoline compound represented by the general formula (3): wherein R1 represents an optionally substituted hydrocarbon group, an optionally substituted alkoxy group, an optionally substituted alkoxycarbonyl group, a halogen atom, a substituted amino group, a substituted carbamoyl group or an optionally substituted heterocyclic group; R3, R4, R5 and R6 may be the same or different and each represents a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted alkoxy group, an optionally substituted alkoxycarbonyl group, a halogen atom, a substituted amino group, a substituted carbamoyl group or an optionally substituted heterocyclic group; two arbitrary groups selected from R3, R4, R5 and R6 may bond to each other to form a ring; and Z1 represents an oxygen atom, a sulfur atom or a selenium atom; comprising reacting a carboxylic acid or a carboxylic acid derivative represented by the general formula (1): R1CO2R2??(1) wherein R1

Abstract: Disclosed is a selective ester production process of an alcoholic hydroxyl group, which proceeds under chemically mild conditions, while having adequate environmental suitability, operability and economical efficiency. Specifically disclosed is a process for producing an ester compound, which is characterized in that an alcohol and a carboxylic acid ester compound are reacted in the presence of a compound containing zinc element, thereby selectively acylating a hydroxyl group of the alcohol.

Abstract: The invention relates to a method for producing an azoline compound represented by the general formula (3): wherein R1 represents an optionally substituted hydrocarbon group, an optionally substituted alkoxy group, an optionally substituted alkoxycarbonyl group, a halogen atom, a substituted amino group, a substituted carbamoyl group or an optionally substituted heterocyclic group; R3, R4, R5 and R6 may be the same or different and each represents a hydrogen atom, an optionally substituted hydrocarbon group, an optionally substituted alkoxy group, an optionally substituted alkoxycarbonyl group, a halogen atom, a substituted amino group, a substituted carbamoyl group or an optionally substituted heterocyclic group; two arbitrary groups selected from R3, R4, R5 and R6 may bond to each other to form a ring; and Z1 represents an oxygen atom, a sulfur atom or a selenium atom; comprising reacting a carboxylic acid or a carboxylic acid derivative represented by the general formula (1): R1CO2R2??(1) wherein