Abstract: An angle adjustment mechanism has a block, a projecting piece, and a connection mechanism. The projecting piece is fixed to a stator. The connection mechanism has elongated holes provided in the block and a shaft member provided in the projecting piece. The shaft member is inserted in the elongated holes. During a tilt angle adjustment process, the shaft member is caused to move in a sliding motion in the elongated holes. During a cooling process, the shaft member is also caused to move in a sliding motion in the elongated holes.

Abstract: This invention aims to develop a chitin oligomer composition and/or a chitosan oligomer composition wherein the content of an oligomer from a trimer to a decamer is 60% or more, and to develop a process for preparing the above-mentioned oligomer composition. The object of the invention can be achieved by mixing hydrofluoric acid or hydrohalogenated acid other than hydrofluoric acid and hydrofluoric acid with a chitin-based material and/or a chitosan-based material.

Abstract: In order to subject a cellulosic material such as insulating paper onto and into which transformer high-voltage insulating oil containing PCB has adhered and permeated to washing that removes the PCB etc. to an undetectable value, the cellulosic material to which PCB etc. has adhered is placed in DMI, sulfolane or other aprotic solvent containing an alkali such as caustic soda and stirred.

Abstract: A transparent adhesive layer 3 with good permeability to laser light is provided on a base sheet 4, a colored layer 2 with good absorption of laser light is provided on the transparent adhesive layer 3, and a transparent layer 1 with good permeability to laser light is provided on the colored layer 2. Laser light 6 is irradiated from the side of the transparent layer 1 to form marked sections 5 at prescribed areas of the colored layer 2. To paste the marking sheet A onto the outer surface of a product, the base sheet 4 is peeled off and the transparent adhesive layer 3 is pasted onto the outer surface of the product. The color of the outer surface of the product may then be seen through the marked sections 5. Thus, satisfactory displays may be provided using only the marked sections 5 formed by laser light irradiation, without any additional special painting step.

Abstract: A safe and reliable method of decomposing halogenated aromatic compounds, wherein a heat-resistant alkaline polar solvent containing halogenated aromatic compounds is contacted with a alkali at a temperature ranging from about 100.degree. C. to 300.degree. C. in order to decompose the halogenated aromatic compounds. The used solvent is removed of solid contents of salts, alkalis and the like, whereby it can be recycled.

Abstract: An admixture for cement compositions is prepared by calcining at 630.degree. to 870.degree. C. at least one substance selected from the group consisting of natural kaolin, halloysite and synthetic kaolin, effecting classification so that amorphous portions of alumina/silica having a mixing ratio of 0.5 to 1.3 form main components, with all particles having diameters up to 8 .mu.m and an average diameter of 0.5 to 2 .mu.m, and a specific gravity ranging from 2.45 to 2.55. This admixture is used to produce a cement composition such as mortar or concrete, which realizes excellent fluidity to promote workability, and a high strength structure.

Abstract: Disclosed herein is a novel fire-retardant polyolefin composition comprising a polyolefin, an organohalogenous fire retardant and a carbonic acid ester represented by the formula (I): ##STR1## wherein R and R' respectively represent an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aralkyl group or an aryl group, Z represents a residual group of an aliphatic diol, an alicyclic diol, an aromatic diol, a diphenyl ketone diol, or a diphenylsulfone diol and n is 0 or 1.

Abstract: The present invention provides a method for preparing solid p-disodium hydroxybenzoate which is characterized by comprising the steps of reacting phenol, carbon tetrachloride in an amount of 0.9 to 1.2 moles per mole of phenol and sodium hydroxide in an amount of 7 to 20 moles per mole of phenol prior to the reaction in an aqueous liquid containing 10 to 40% by weight of p-disodium hydroxybenzoate and/or sodium chloride in the presence of a transition metal powder in an amount of 0.01 to 1.00% by weight based on the weight of a reaction system at a reaction temperature of 50.degree. to 150.degree. C.; cooling the resulting reaction mixture to a level of -20.degree. to +20.degree. C.; and separating said p-disodium hydroxybenzoate therefrom.

Abstract: A vinylnorbornyl alcohol of 5- or 6-vinyl-2-hydroxymethylbicyclo[2.2.1]heptane which is represented by the following structural formula: ##STR1## The compound has particular fragrance of a mint-like note partaking of camphor tone.

Abstract: Norbornane derivatives having hydrocarbon side chains, the processes for preparing the same and perfume compositions containing the same. The norbornane derivatives are represented by the following general formula (I) ##STR1## wherein C.sub.2 is an ethyl group, an ethylidene group or a vinyl group each connected to 5 or 6 position of the norbornane ring, each of R.sub.1 and R.sub.2 is a hydrogen atom or a methyl group, and R.sub.3 is a formyl group or a group represented by the following general formula (II) ##STR2## wherein R.sub.4 is a methyl group, an ethyl group, a n-propyl group or an isopropyl group, and X is a carbon atom of the norbornane ring. The above norbornane derivatives give a wide variety of woody fragrances and are useful as components for various perfume products.

Abstract: An acylnorbornanone acetal is represented by the formula: ##STR1## (wherein R.sub.1 is a saturated hydrocarbon group having 2 to 7 carbon atoms and R.sub.2 is a hydrogen atom or a hydrocabon group having 1 to 10 carbon atoms). The acylnorbornanone acetal is prepared by oxidizing an .alpha.-hydroxyalkylnorbornanone acetal represented by the formula: ##STR2## (wherein R.sub.2 is a hydrogen atom or a hydrocarbon group having 2 to 7 carbon atoms). The perfume composition contains as a perfume component the acylnorbornanone acetal as represented above.

Abstract: The substituted norbornanones represented by general formula (I): ##STR1## (wherein R.sub.1 is an alkenyl group having 2 or 3 carbon atoms or an alkylidene group having 1 to 3 carbon atoms and R.sub.2 is a saturated hydrocarbon group having 2 to 7 carbon atoms with the dotted line between the two carbon atoms indicating a single bond when R.sub.1 is an alkenyl group and a double bond when R.sub.1 is an alkylidene group) are useful for perfume compositions. The substituted norbornanones represented by the general formula (I) may be prepared from the corresponding alkenyl or alkylidene norbornanones with diols in the presence of an acid catalyst.

Abstract: The pretreatment of an epoxy resin substrate for electroless copper plating comprises the steps of subjecting the epoxy resin substrate to a treatment with an aqueous solution including a chloride of iron and then subjecting the substrate to a treatment with an aqueous solution of a water soluble peroxide before sensitizing the epoxy resin substrate for electroless copper plating.

Abstract: Disclosed in this invention are a novel compound tris(3-acetylthiopropyl)isocyanurate which can serve as an intermediate for the preparation of tris(3-mercaptopropyl)isocyanurate useful as a polymerization reaction regulator, crosslinking agent, curing agent, lubricant adjunct, etc., and a process for preparing the said compound, as well as a process for preparing tris(3-mercaptopropyl)isocyanurate using the said compound as an intermediate.

Abstract: Isocyanuric acid triesters are prepared by isomerization of the corresponding cyanuric acid triesters. The starting cyanuric acid esters are dissolved in a polar solvent which is free of active hydrogen atoms, which contains a nitrogen or sulfur atom in the molecule and which has a boiling point not higher than 260.degree. C. The solution may optionally contain an alkali metal halide, an alkaline earth metal halide or an ammonium halide. Isomerization is carried out at a temperature of from 50.degree. to 200.degree. C.

Abstract: Isocyanic acid derivatives are prepared by reacting an organic halogen compound with an alkali cyanate in N,N-disubstituted organic acid amides, N,N-disubstituted sulfonic acid amides, sulfoxides, sulfones or macrocyclic polyethers, at 70.degree. to 200.degree. C, in the presence of organic polyhalogen compounds selected from compounds having dihalogenomethyl group, dihalogenomethylene group, or trihalogenomethyl group and tetrahalogenomethane, in an amount in the range of from 1 to 20 weight percent based on the weight of said organic halogen compounds.

Abstract: A process for preparing organic isocyanate compounds characterized by reacting a chloromethyl group-containing compound having the formula:(X).sub.n RCH.sub.2 Clwherein X, which can be the same or different, is chlorine, alkyl, cycloalkyl, alkenyl, phenyl, chloromethylphenyl or chloromethyl, n is 0 or an integer of 1 to 3, and R is an aromatic hydrocarbon radical or an olefin radical,With an alkali cyanate, in the presence of a catalyst composition comprising (a) a cuprous salt in an amount of 0.1 to 20% by weight, based on said chloromethyl group-containing compound, and (b) a tertiary amine compound or quaternary ammonium compound in an amount equivalent to 0.05 to 1.25 gram atoms of nitrogen per gram mole of said cuprous salt, in a high-boiling-point solvent having a dieelectric constant (.epsilon.) not higher than 20, at a reaction temperature of 150.degree. to 250.degree. C, for 0.1 to 10 hours.

Abstract: A process for preparing benzene derivatives having an isocyanatomethyl group by reacting a benzene derivative having a chloromethyl group with sodium cyanate in dimethylformamide at 60.degree. to 160.degree.C., in the presence of a catalytic amount of an acidic metal chloride-dimethylformamide compound, made present in the reaction mixture from the start of the reaction by being dissolved in the starting reaction mixture.

Abstract: An oil-filled electrical device comprising a casing, an electrical device element in the casing and an insulating oil consisting essentially of one or more 2-diphenylalkylether having the structural formula of ##SPC1##Wherein R is the alkyl group expressed as C.sub.n H.sub.2n.sub.+1 wherein R is 1.ltoreq.n423.8.