Abstract:
Adamantanediols are produced by the hydroxylation of adamantane compounds in a water/organic solvent two-phase system in the presence of a ruthenium compound and a hypochlorite. Throughout the hydroxylation, the hypochlorite concentration in the water phase is regulated within a narrow limited range, for example, by monitoring the pH of the reaction system. With such a control of the hypochlorite concentration, the adamantanediols are produced in a high selectivity and a high yield.
Abstract:
A 2-hydrocarbyl-2-adamantyl acrylate compound represented by the following Formula 6: is produced easily and stably with high yields by reacting a 2-adamantanone compound represented by the following Formula 1: with at least one organometallic compound represented by the following Formula 2 or 3: R1MgX (2) R1Li (3) and at least one acrylic compound represented by the following Formula 4 or 5: wherein, R1, R2, R3, X, Y and n in the above formulae being as defined in the disclosure.
Abstract:
Disclosed is a composition comprising trioxane and an assistant aiding in the insect-proofing action of trioxane or controlling its vapor pressure.
Abstract:
A process for producing olefin oxides comprising epoxidizing olefins with hydrogen peroxide in the presence of an inorganic or organic antimony compound or organotin compound as a catalyst is disclosed.
Abstract:
The adamantane derivatives of the present invention which are represented by the general formula (1): wherein X is a hydrogen atom, alkyl, halogen-containing alkyl, halogen, or hydroxyl-, halogen-, nitrile- or ether-containing hydrocarbyl, and a plurality of X groups, if any, may be the same or different from each other; n1 is an integer of 1 to 14; R1 to R4 may be the same or different from each other and are independently alkyl or halogen-containing alkyl; and Y1 and Y2 may be the same or different from each other and are independently a hydrogen atom or a group represented by the general formula (2): wherein R5 to R7 may be the same or different from each other and are independently a hydrogen atom, alkyl, halogen or halogen-containing alkyl, are excellent in optical properties, heat resistance and acid-dissociating property, and useful as crosslinking-type resins, optical materials such as optical fibers, light wave guides, optical disk substrates and photoresists as well as raw materials thereof, intermediate products of medicines or agricultural chemicals, and various other industrial products.
Abstract translation:由通式(1)表示的本发明的金刚烷衍生物:其中X是氢原子,烷基,含卤素的烷基,卤素或羟基,卤素,腈或醚的烃基,和 多个X组(如果有的话)可以相同或不同; n 1是1至14的整数; R 1至R 4可以彼此相同或不同,并且独立地为烷基或含卤素的烷基; 和Y 1和Y 2可以彼此相同或不同,并且独立地为氢原子或由通式(2)表示的基团:其中R' R 5和R 7可以相同或不同,并且独立地为氢原子,烷基,卤素或含卤素的烷基,光学性能,耐热性均优异 和酸解离性,并且可用作交联型树脂,光学材料如光纤,光波导,光盘基片和光致抗蚀剂以及其原料,药物或农药的中间产物,以及各种其它工业产品 。
Abstract:
In the present invention, an adamantyl acrylate compound is produced by a process comprising a first step and a second step without using acid halide. In the first step, a 2-adamantanone compound is reacted with a hydrocarbyl halide in the presence of lithium metal to form an adamantanolate intermediate that is then reacted with an acrylic ester compound in the second step to produce the aimed adamantyl acrylate compound.
Abstract:
It is a major object of the present invention to reduce the time required for bleaching discolored teeth by using a photocatalyst to thereby provide a bleaching material which is simple to use. The present invention relates to a bleaching material for bleaching teeth by applying a solution or paste comprising BiVO4 photocatalyst and a compound which generates hydrogen peroxide in an aqueous solution onto the surface of discolored teeth, and irradiating the surface with light, thereby bleaching the teeth by resultant photocatalytic action. The present invention provides a bleaching material for discolored teeth comprising as active ingredients BiVO4 photocatalyst and a compound which generates hydrogen peroxide in an aqueous solution; and a method of bleaching discolored teeth using the above material.
Abstract:
In producing deionized water by electrodeionization according to the present invention, feed water and concentrating water are flowed into the ion depletion compartments and the concentration compartments, respectively, in such a way that the current direction of feed water being fed into the ion depletion compartments is opposite to the current direction of concentrating water being fed into the concentration compartments. Further, feed water flowed into each ion depletion compartment is first passed through an anion exchange material layer, and subsequently passed through other ion exchange material layer(s). The migration of anions into the concentration compartments is promoted in the portions of such anion exchange material layers through which feed water is first passed. As a result, the silica removal rate is improved.
Abstract:
A method for promoting the bleaching action of a peroxy bleaching agent which comprises using as an activating agent for the bleaching agent at least one chloro-s-triazine derivative of the formula ##SPC1##Wherein A.sub.1 and A.sub.2 are substituents which are the same or different and each represents a chlorine atom or (1) --OR.sub.1 wherein R.sub.1 is an alkyl group containing not more than 12 carbon atoms or (2) ##EQU1## wherein R.sub.2 and R.sub.3 are the same or different and each represents a hydrogen atom or an alkyl group containing not more than 12 carbon atoms, with the proviso that A.sub.1 and A.sub.2 are not chlorine atoms at the same time.