Abstract: The present invention relates to a biodegradable amino-carboxylic acid chelating agent which comprises a compound of the following formula (1) and at least one compound selected from the group consisting of aspartic acid, maleic acid, acrylic acid, malic acid, glycine, glycolic acid, iminodiacetic acid, nitrilotriacetic acid, &agr;-alanine, &bgr;-alanine, imino-dipropionic acid, fumaric acid, a synthetic starting amino acid and a synthetic intermediate amino acid and a salt thereof in an amount of 8% by weight or less based on the compound of the formula (1): wherein R1 represents hydrogen or an unsubstituted or substituted hydrocarbon group of 1-20 carbon atoms, R2 represents hydrogen or an unsubstituted or substituted hydrocarbon group of 1-8 carbon atoms, R1 and R2 may form a ring together, the substituent which can be present in R1 and R2 is at least one member selected from the group consisting of —OH, —CO2M and —SO3M where M represents hydrogen or an alkali metal; X r

Abstract: The present invention relates to a biodegradable amino-carboxylic acid chelating agent excellent in biodegradability and for use as a chelating agent, which is in the form of a solid, aqueous solution or slurry excellent in handling ability, wherein the chelating agent comprises a detergent composition having excellent detergency and high biodegradability.

Abstract: Disclosed is a biodegradable chelating agent which comprises a compound of the following formula [1] and at least one compound selected from the group consisting of aspartic acid, maleic acid, acrylic acid, malic acid, glycine, glycolic acid, iminodiacetic acid, nitrilotriacetic acid, &bgr;-alanine, &bgr;-alanine, iminodipropionic acid, fumaric acid, a synthetic starting amino acid and a synthetic intermediate amino acid and a salt thereof in an amount of 8% by weight or less based on the compound of the formula [1]: 1

Abstract: Disclosed is a biodegradable chelating agent which comprises a compound of the following formula [1] and at least one compound selected from the group consisting of aspartic acid, maleic acid, acrylic acid, malic acid, glycine, glycolic acid, iminodiacetic acid, nitrilotriacetic acid, &agr;-alanine, &bgr;-alanine, iminodipropionic acid, fumaric acid, a synthetic starting amino acid and a synthetic intermediate amino acid and a salt thereof in an amount of 8% by weight or less based on the compound of the formula [1]: 1

Abstract: Disclosed is a biodegradable chelating agent which comprises a compound of the following formula [1] and at least one compound selected from the group consisting of aspartic acid, maleic acid, acrylic acid, malic acid, glycine, glycolic acid, iminodiacetic acid, nitrilotriacetic acid, &agr;-alanine, &agr;-alanine, iminodipropionic acid, fumaric acid, a synthetic starting amino acid and a synthetic intermediate amino acid and a salt thereof in an amount of 8% by weight or less based on the compound of the formula [1]: wherein R1, R2, X and Y are defined.

Abstract: A cross-linkable, electrically conductive composition comprising (a) a soluble, electrically conducting polymer having a sulfonic acid group and/or a carboxyl group and (b) a thermally cross-linkable or ultraviolet- or electron beam-cross-linkable resin or paint.

Abstract: A soluble aniline conducting polymer characterized in that said conductive polymer comprises as a repeating unit an alkoxyl group-substituted aminobenzenesulfonic acid, its alkali metal salts, ammonium salts and/or substituted ammonium salts, and is a solid having a weight average molecular weight of about 1900 or more at room temperature, a conductive composition and electric conductor comprising the same, and a method for producing a soluble aniline conducting polymer having a weight average molecular weight of 10,000 t 3,240,000 characterized by polymerizing at least one compound (1) selected from the group consisting of an acidic group-substituted aniline, its alkali metal salts, ammonium salts and substituted ammonium salts in a solution containing a basic compound (2) using an oxidizing agent.

Abstract: A soluble aniline conducting polymer characterized in that said conductive polymer comprises as a repeating unit an alkoxyl group-substituted aminobenzenesulfonic acid, its alkali metal salts, ammonium salts and/or substituted ammonium salts, and is a solid having a weight average molecular weight of about 1900 or more at room temperature, a conductive composition and electric conductor comprising the same, and a method for producing a soluble aniline conducting polymer having a weight average molecular weight of 10,000 t 3,240,000 characterized by polymerizing at least one compound (1) selected from the group consisting of an acidic group-substituted aniline, its alkali metal salts, ammonium salts and substituted ammonium salts in a solution containing a basic compound (2) using an oxidizing agent.

Abstract: A cyanoacetic acid higher ester represented by the general formula: NCCH.sub.2 COOR', wherein R' represents an alkyl group having 4 to 20 carbon atoms, is prepared by subjecting a cyanoacetic acid ester represented by the general formula: NCCH.sub.2 COOR.sup.1, wherein R.sup.1 represents an alkyl group having 1 to 3 carbon atom, to a transesterification with an alcohol represented by the general formula: R'OH, wherein R' represents an alkyl group having 4 to 20 carbon atoms, in the presence of a specific tin compound as the catalyst. According to the present invention, the cyanoacetic acid higher esters which are useful as intermediates for pharmaceuticals and agricultural chemicals as well as intermediates for industrial products can be prepared easily and in higher yield as compared with conventional methods, by using a cyanoacetic acid ester and an alcohol which are less expensive and easily available as raw materials.

Abstract: A cyanoacetic acid higher ester represented by the general formula: NCCH.sub.2 COOR', wherein R' represents an alkyl group having 4 to 20 carbon atoms, is prepared by subjecting a cyanoacetic acid ester represented by the general formula: NCCH.sub.2 COOR.sup.1, wherein R.sup.1 represents an alkyl group having 1 to 3 carbon atom, to a transesterification with an alcohol represented by the general formula: R'OH, wherein R' represents an alkyl group having 4 to 20 carbon atoms, in the presence of a specific tin compound as the catalyst. According to the present invention, the cyanoacetic acid higher esters which are useful as intermediates for pharmaceuticals and agricultural chemicals as well as intermediates for industrial products can be prepared easily and in higher yield as compared with conventional methods, by using a cyanoacetic acid ester and an alcohol which are less expensive and easily available as raw materials.

Abstract: A method for recovering an uncrosslinked synthetic resin waste including dissolving the uncrosslinked synthetic resin waste in a solvent containing, as an active ingredient, one or more oxyisobutyric acid esters selected from an alkyl .alpha.-alkoxyisobutyrate, an alkyl .beta.-alkoxyisobutyrate and an alkyl .alpha.-hydroxyisobutyrate. This invention provides a method for recovering a plastic waste by using a highly safe solvent which is free from the problems encountered in the conventional methods with the use of aromatic hydrocarbons or halogenated hydrocarbons, and comprises non-halogen solvents, forms no substance causing environmental problems, has a high ability to dissolve plastic wastes, has neither toxicity nor any offensive odor, is not accumulated in nature because of its high biodegradability, and has a relatively high boiling point.

Abstract: A solvent composition containing at least one of an alkyl .alpha.-alkoxyisobutyrate, an alkyl .beta.-alkoxyisobutyrate, and an alkyl .alpha.-hydroxyisobutyrate as an active component is disclosed. The solvent composition is of low toxicity and harmless to humans, has an extremely high dissolving power for high polymers, fats and oils, fluxes, liquid crystals, etc., produces no environment destructive substance, gives off no offensive odor, and has a relatively high boiling point indicative of safety and ease in handling.

Abstract: A soluble aniline conducting polymer characterized in that said conductive polymer comprises as a repeating unit an alkoxyl group-substituted aminobenzenesulfonic acid, its alkali metal salts, ammonium salts and/or substituted ammonium salts, and is a solid having a weight average molecular weight of about 1900 or more at room temperature, a conductive composition and electric conductor comprising the same, and a method for producing a soluble aniline conducting polymer having a weight average molecular weight of 10,000 t 3,240,000 characterized by polymerizing at least one compound (1) selected from the group consisting of an acidic group-substituted aniline, its alkali metal salts, ammonium salts and substituted ammonium salts in a solution containing a basic compound (2) using an oxidizing agent.

Abstract: A method for producing N-methylolacrylamide which comprises reacting acrylamide with formaldehyde or paraformaldehyde in an aqueous solvent in the presence of (A) a basic compound and at least one member selected from the group consisting of a salt of Mo-containing acid and a salt of W-containing acid, or (B) a quaternary ammonium hydroxide compound, is provided by the present invention. According to the method of the present invention, N-methylolacrylamide having few by-products is obtained in high yields.

Abstract: N-substituted maleimides are prepared by reacting maleic anhydride with an amine in the presence of Cu or a copper compound and purifying the maleimide produced in the absence of presence of said Cu or copper compound. N-substituted maleimides are widely useful or starting materials or intermediates for medicines, agricultural chemicals, dyes, macromolecular compounds, and the like.

Abstract: A process for producing N-substituted maleimides which comprises heating maleic anhydride and an aromatic or aliphatic amine, or maleic acid monoamides obtained from them, in the presence of an ion exchange resin in an organic solvent to effect cyclodehydration.