摘要:
A process for the production of a magnesium oxide having high hydrolysis resistance and high fluidity, which comprises:(A) a step of reacting a water-soluble magnesium salt with an alkaline substance in such an amount that is not more than 0.95 equivalent weight based on 1 equivalent weight of the water-soluble magnesium salt, at a temperature of not more than 40.degree. C.,(B) a step of heating the resultant reaction product and its reaction mother liquor at about 50.degree. to 120.degree. C. to form a magnesium hydroxide,(C) a step of forming particles having an average secondary particle diameter of about 5 to 500 .mu.m by using a spray drier,(D) a step of firing the particles at about 1,100.degree. to 1,600.degree. C., and(E) a step of pulverizing the resultant fired product under conditions which do not substantially destroy the average secondary particle diameter obtained in the above step (C).
摘要:
Magnesium hydroxide having a high aspect ratio, a production method thereof and a resin composition comprising the same.The method of producing the magnesium hydroxide having a long diameter (width) of not less than 0.5 μm and aspect ratio of not less than 10, comprising the steps of: (A) adding an alkali to and coprecipitating it with a mixed aqueous solution of a water-soluble magnesium salt and a monovalent organic acid or a salt thereof, or (B) adding an alkali aqueous solution to and coprecipitating it with an aqueous solution of a water-soluble magnesium salt and adding a monovalent organic acid or a salt thereof to the resulting product; and (C) hydrothermally treating the obtained slurry at 100° C. or higher.
摘要:
When the coating object area is positioned on the suction table, the film is stopped and is mounted on the suction table, and is further provided with tension in the longitudinal direction to eliminate slacks or the like, but, curl is caused in the both side end regions in the coating object area. Therefore, the coating object area is mounted on the suction table, and at the same time, the curl correction bars disposed on the both sides of the suction table are moved to the curled portions of the coating object area, and then the curled portions are pressed against the suction surface of the suction table to thereby perform the curl correction.Further, in the coating process with the UV-curing coating material, the UV light from the UV light source formed integrally with the coating head is applied to cure the material. In the vacuum suction section, as the destination, the bubbles or the like in the coating head are sucked. When the suction of the coating head is not performed, the UV shutter is moved by the suction section air cylinder to block the suction port of the vacuum suction section. Thus, the inside of the vacuum suction section is shielded from the UV light.
摘要:
There are provided calcium hydroxide having a large specific surface area, a resin composition comprising the calcium hydroxide and having excellent thermal stability, and a molded article and a stabilizer for synthetic resins which comprise the calcium hydroxide. There are provided a calcium hydroxide compound represented by the following formula (1): Ca(OH)2−nx(An−)x (1) (wherein n represents an integer of 1 to 4, x represents a number of 0.001 to 0.2, and An− represents an anion derived from at least one compound selected from the group consisting of a silicon-based compound, a phosphorus-based compound, an aluminum-based compound, an inorganic acid and an organic acid.), and a synthetic resin, a molded article and a stabilizer for synthetic resins which comprise the compound.
摘要:
When the coating object area is positioned on the suction table, the film is stopped and is mounted on the suction table, and is further provided with tension in the longitudinal direction to eliminate slacks or the like, but, curl is caused in the both side end regions in the coating object area. Therefore, the coating object area is mounted on the suction table, and at the same time, the curl correction bars disposed on the both sides of the suction table are moved to the curled portions of the coating object area, and then the curled portions are pressed against the suction surface of the suction table to thereby perform the curl correction. Further, in the coating process with the UV-curing coating material, the UV light from the UV light source formed integrally with the coating head is applied to cure the material. In the vacuum suction section, as the destination, the bubbles or the like in the coating head are sucked. When the suction of the coating head is not performed, the UV shutter is moved by the suction section air cylinder to block the suction port of the vacuum suction section. Thus, the inside of the vacuum suction section is shielded from the UV light.
摘要:
There are provided calcium hydroxide having a large specific surface area, a resin composition comprising the calcium hydroxide and having excellent thermal stability, and a molded article and a stabilizer for synthetic resins which comprise the calcium hydroxide.There are provided a calcium hydroxide compound represented by the following formula (1): Ca(OH)2-nx(An−)x (1) (wherein n represents an integer of 1 to 4, x represents a number of 0.001 to 0.2, and An− represents an anion derived from at least one compound selected from the group consisting of a silicon-based compound, a phosphorus-based compound, an aluminum-based compound, an inorganic acid and an organic acid.), and a synthetic resin, a molded article and a stabilizer for synthetic resins which comprise the compound.
摘要:
Magnesium hydroxide having a high aspect ratio, a production method thereof and a resin composition comprising the same.The method of producing the magnesium hydroxide having a long diameter (width) of not less than 0.5 pm and aspect ratio of not less than 10, comprising the steps of: (A) adding an alkali to and coprecipitating it with a mixed aqueous solution of a water-soluble magnesium salt and a monovalent organic acid or a salt thereof, or (B) adding an alkali aqueous solution to and coprecipitating it with an aqueous solution of a water-soluble magnesium salt and adding a monovalent organic acid or a salt thereof to the resulting product; and (C) hydrothermally treating the obtained slurry at 100° C. or higher.
摘要:
An antialgal method, which employs, as an antialgal component, at least one solid solution selected from the group consisting of specific hydroxide or oxide solid solutions and an organic or inorganic material containing the antialgal component.
摘要:
The device of the invention is assembled in a paper sheet counting apparatus to stop and held the suction heads at the predetermined positions at which one of the suction heads is precisely opposite to the face of the paper sheet in the face-to-face relationship. The suction heads are carried by a rotary cylinder having peripheral face on which a group of recesses each corresponding to each of the suction heads is formed. One of the recesses receives a pawl of a stopper when the rotary cylinder is stopped to terminate the paper sheet counting operation. The stopper is held at a retracted position when the counting operation is continued and moved to an engaging position when the one cycle counting operation is terminated. A slipping slope diverges from each recess outwards. The stopper is provided with an elongated hole in which a shaft is inserted, and the stopper is swinged about the shaft to be moved between the retracted position and the position to be engaged with one of the recesses. A spring is connected to the stopper to bias the stopper in one longitudinal direction with the shaft positioning at one extremity of the hole. In order to stop the rotary cylinder, the cylinder is rotated in the reverse direction, and the stopper is moved to the engaging position. Whereupon the pawl of the stopper slips down along the slipping slope to fall into one of the recesses. At that time, impact force is damped by the action of the bias spring.