Abstract: It is an object of the present invention to provide a catalyst having excellent performance and high mechanical strength for use in the production of methacrylic acid. A method for manufacturing a catalyst comprising essential active components of molybdenum, phosphorus, vanadium, cesium, ammonia, copper, and antimony for use in the production of methacrylic acid, comprising drying a slurry prepared by mixing a compound(s) containing the essential active components with water and then calcining the resulting dry powder and molding the calcined powder.

Abstract: It is an object of the present invention to provide a catalyst having excellent performance and high mechanical strength for use in the production of methacrylic acid. A method for manufacturing a catalyst comprising essential active components of molybdenum, phosphorus, vanadium, cesium, ammonia, copper, and antimony for use in the production of methacrylic acid, comprising drying a slurry prepared by mixing a compound(s) containing the essential active components with water and then calcining the resulting dry powder and molding the calcined powder.

Abstract: The present invention relates to polymerizable compositions, comprising at least two specific benzoxazines and to cured products obtained from the polymerizable compositions. More particularly, the present invention relates to increasing the polymerization rate of polymerizable compositions via incorporation of at least one specific benzoxazine.

Abstract: A method for production of an N-carboxy amino acid anhydride with efficiency is provided. The method for production of an N-carboxy amino acid anhydride includes a step of reaction of an amino acid organic salt compound with a carbonic acid diester.

Abstract: The present invention provides a process for producing an amino acid N-carboxyanhydride, which comprises reacting an amino acid or a derivative thereof with a compound represented by the following formula (1): wherein R1 and R2 represent the same or different electron-withdrawing substituents and each independently are an optionally substituted acyl group, an optionally substituted alkyloxycarbonyl group, an optionally substituted perfluoroalkyl group, an optionally substituted perchloroalkyl group, a cyano group, a halogen atom, or a nitro group; and a and b are the same or different and each are an integer of 1-5.

Abstract: The object of the present invention is to provide a catalyst for producing methacrylic acid in high yield and highly selectively by subjecting methacrolein, isobutylaldehyde or isobutyric acid to gas phase catalytic oxidation, and the preparation method thereof. The catalyst contains Mo, V, P, Cu, Cs and NH4 as the essential, active components, and the feature is to use for preparing the catalyst a cesium weak acid salt or cesium hydroxide as the Cs raw material and ammonium acetate as the NH4 raw material. A coated catalyst of the present invention is obtainable by supporting the active component on an inert carrier of alumina or the like.

Abstract: The present invention relates to compositions comprising an epoxy resin; a reagent selected from the group of cationic compounds or compounds which are capable to form cationic compounds or mixtures of those; at least one compound with two aromatic rings and at least one central cyclic oxygen bridged ring and the use of such compositions in adhesives, sealants and coatings.

Abstract: The present invention relates to adhesion-improved, curable compositions comprising a cyclic ether, a cyclic thiocarbonate, an amine and a carboxylic acid. A method of making such compositions and their use in adhesives, sealants and coatings are also provided.

Abstract: The present invention relates to a catalyst, which is an organic component with electron withdrawing substituents and to compositions with such catalyst and at least one benzoxazine component, and the use of such compositions in adhesives, sealants and coatings.

Abstract: Polymerizable combinations, comprising at least one first component selected from the group of benzoxazine monomers and at least one second component selected from the group of aromatic esters are described. Furtheron the use of aromatic esters as additives to benzoxazine monomers as well as methods of coating a device by heating the above mentioned combination, and a device, coated by that way is explained.

Abstract: The present invention relates to a polymerization catalyst, comprising at least two components, wherein at least one or more of said at least two components are selected from the group of nitrogen containing heterocycles and/or their derivatives and at least one or more of said at least two components is selected from the group of organic sulfur containing acids and/or derivatives of organic sulfur containing acids.

Abstract: It is an object to provide a simple method for producing catalysts available in various reaction conditions, that allow gas-phase catalytic oxidation of methacrolein and the like to give methacrylic acid with high yield, high selectivity and stable methacrylic yield over extended time. A method for manufacturing a catalyst of which active components are partly neutralized salt of heteropoly acid comprising molybdenum, phosphorus, vanadium, cesium, antimony, and ammonia as essential components, wherein the method is characterized in mixing an antimony compound with a complex oxide of the essential active components in the catalyst containing active components other than antimony. The antimony compound may be added during slurry preparation.

Abstract: The present invention relates to compositions comprising an epoxy resin; a reagent selected from the group of cationic compounds or compounds which are capable to form cationic compounds or mixtures of those; at least one compound with two aromatic rings and at least one central cyclic oxygen bridged ring and the use of such compositions in adhesives, sealants and coatings.

Abstract: It is an object of the present invention to provide a catalyst having excellent performance and high mechanical strength for use in the production of methacrylic acid. A method for manufacturing a catalyst comprising essential active components of molybdenum, phosphorus, vanadium, cesium, ammonia, copper, and antimony for use in the production of methacrylic acid, comprising drying a slurry prepared by mixing a compound(s) containing the essential active components with water and then calcining the resulting dry powder and molding the calcined powder.

Abstract: The present invention relates to 1,3-oxathiolane-2-thione compounds of the general formula (I): wherein R1 and R2 are the same or different, each of which denotes a straight-chain or branched alkoxy residue with 1 to 6 carbon atoms or an aryloxy or aralkyloxy residue, R3 is different or the same as R1 or R2 or an aliphatic residue, an amino residue, a halogen residue, an aromatic or heteroaromatic residue, or an araliphatic or heteroaraliphatic residue, R4 is a bridging group selected from the groups consisting of aliphatic, heteroaliphatic, araliphatic, heteroaraliphatic, aromatic and heteroaromatic groups and R5 is hydrogen, an aliphatic, heteroaliphatic, araliphatic, heteroaraliphatic, aromatic, heteroaromatic, cycloaliphatic or heterocycloaliphatic group or R4 and R5 form a cycloaliphatic, cycloheteroaliphatic, aromatic or heteroaromatic residue, which is optionally substituted with an aliphatic, heteroaliphatic residue serving as a bridging group to the silicon atom and X and Y are different and sele

Abstract: An erasable ink composition comprising water, a water-soluble organic solvent, and the following colorant, colorless resin particles and shear-thinning, viscosity-adjustment agent, characterized in that the colorless resin particles have a mean particle diameter smaller than that of the colorant and are contained in an amount larger than that of the colorant: (a) 3 to wt % (based on the whole ink) of colorless resin particles which are made of at least one resin selected from among acrylic resins, urethane resins, silicone resins and melamine resins and have a mean particle diameter of 0.10 to 10 ?m, (b) 1 to 40 wt % (based on the whole ink) of a colorant having a mean particle diameter of 2 ?m or above, and (c) 0.01 to 4 wt % (based on the whole ink) of a shear thinning, viscosity-adjustment agent.

Abstract: The present invention relates to the use of one or more 6-membered lactones condensed to an aromatic or heteroaromatic moiety as shrinkage-suppressing agents in amine-curing epoxy compositions, such compositions and the use of such compositions in adhesives, sealants and coatings.

Abstract: The present invention relates to adhesion-improved, curable compositions comprising a cyclic ether, a cyclic thiocarbonate, an amine and a carboxylic acid. A method of making such compositions and their use in adhesives, sealants and coatings are also provided.

Abstract: The present invention provides a process for producing an amino acid N-carboxyanhydride, which comprises reacting an amino acid or a derivative thereof with a compound represented by the following formula (1): wherein R1 and R2 represent the same or different electron-withdrawing substituents and each independently are an optionally substituted acyl group, an optionally substituted alkyloxycarbonyl group, an optionally substituted perfluoroalkyl group, an optionally substituted perchloroalkyl group, a cyano group, a halogen atom, or a nitro group; and a and b are the same or different and each are an integer of 1-5.

Abstract: The present invention relates to 1,3-oxathiolane-2-thione compounds of the general formula (I): wherein R1 and R2 are the same or different, each of which denotes a straight-chain or branched alkoxy residue with 1 to 6 carbon atoms or an aryloxy or aralkyloxy residue, R3 is different or the same as R1 or R2 or an aliphatic residue, an amino residue, a halogen residue, an aromatic or heteroaromatic residue, or an araliphatic or heteroaraliphatic residue, R4 is a bridging group selected from the groups consisting of aliphatic, heteroaliphatic, araliphatic, heteroaraliphatic, aromatic and heteroaromatic groups and R5 is hydrogen, an aliphatic, heteroaliphatic, araliphatic, heteroaraliphatic, aromatic, heteroaromatic, cycloaliphatic or heterocycloaliphatic group or R4 and R5 form a cycloaliphatic, cycloheteroaliphatic, aromatic or heteroaromatic residue, which is optionally substituted with an aliphatic, heteroaliphatic residue serving as a bridging group to the silicon atom and X and Y are different and sel