Abstract: High-purity alkanolamines, whose iron content is less than 50 ppb, are provided. Said high-purity alkanolamines can be produced by covering with an alkanolamine-resistant material at least a part of the inner wall of equipment that contacts alkanolamines from the top of the distillation tower to the storage tank in producing a high-purity alkanolamine from a crude alkanolamine by using distillation towers.

Abstract: High-purity alkanolamines, whose iron content is less than 50 ppb, are provided. Said high-purity alkanolamines can be produced by covering with an alkanolamine-resistant material at least a part of the inner wall of equipment that contacts alkanolamines from the top of the distillation tower to the storage tank in producing a high-purity alkanolamine from a crude alkanolamine by using distillation towers.

Abstract: The present invention provides a process for producing a (poly)alkylene glycol monoalkyl ether with high selectivity and high yield. In this process, the (poly)alkylene glycol monoalkyl ether is produced by reacting an olefin and a (poly)alkylene glycol in the presence of a catalyst, wherein: 1) a crystalline metallosilicate is used as the catalyst, and at least a portion of the used catalyst is regenerated, and the regenerated catalyst is recycled as the catalyst for the reaction; or 2) the reaction between the olefin and the (poly)alkylene glycol is carried out in the presence of either or both of a (poly)alkylene glycol dialkyl ether and an alcohol.

Abstract: A higher secondary alcohol alkoxylate compound composition represented by the general formula (1): [wherein R1 and R2 represent an alkyl group provided that the total number of carbon atoms of R1 and R2 is in the range of 7 to 29 and the number of carbon atom of R2 is not less than that of R1 (the number of carbon atom of R1<the number of carbon atom of R2), A represents a lower alkylene group, n represents a numeral in the range of 1 to 50 on the average; providing that when n is not less than 2, the number of species of oxyalkylene group represented by AO may be either one or two or more, and that when the oxyalkyl groups have two or more species, all the oxyalkylene groups are present in the average of n, and B represents a hydrogen atom or SO3M (wherein M represents an alkali metal atom, an alkaline earth metal atom, an ammonium group or a substituted ammonium group)], wherein the composition comprises 30 to 90 mol % of the higher secondary alcohol alkoxylate compound (X) ha

Abstract: A (poly)alkylene glycol higher alkyl ether derivative composition characterized by comprising 30-90 mol. % of (B1) (poly)alkylene glycol higher alkyl ether derivative and 70-10 mol.

Abstract: The present invention provides a process for producing a (poly)alkylene glycol monoalkyl ether with high selectivity and high yield. In this process, the (poly)alkylene glycol monoalkyl ether is produced by reacting an olefin and a (poly)alkylene glycol in the presence of a catalyst, wherein: 1) a crystalline metallosilicate is used as the catalyst, and at least a portion of the used catalyst is regenerated, and the regenerated catalyst is recycled as the catalyst for the reaction; or 2) the reaction between the olefin and the (poly)alkylene glycol is carried out in the presence of either or both of a (poly)alkylene glycol dialkyl ether and an alcohol.

Abstract: A higher secondary alcohol alkoxylate compound composition represented by the general formula (1): , wherein the composition comprises 30 to 90 mol % of the higher secondary alcohol alkoxylate compound (X) having a methyl group for R1 and 70 to 10 mol % of the higher secondary alcohol alkoxylate compound (Y) having an alkyl group of 2 or more carbon atoms for R1, a method for the production thereof, and a detergent and an emulsifier using the composition.

Abstract: A higher secondary alcohol alkoxylate compound composition represented by the general formula (1): ##STR1## [wherein R.sup.1 and R.sup.2 represent an alkyl group provided that the total number of carbon atoms of R.sup.1 and R.sup.2 is in the range of 7 to 29 and the number of carbon atom of R.sup.2 is not less than that of R.sup.1 (the number of carbon atom of R.sub.1 .ltoreq.the number of carbon atom of R.sub.2), A represents a lower alkylene group, n represents a numeral in the range of 1 to 50 on the average; providing that when n is not less than 2, the number of species of oxyalkylene group represented by AO may be either one or two or more, and that when the oxyalkyl groups have two or more species, all the oxyalkylene groups are present in the average of n, and B represents a hydrogen atom or SO.sub.

Abstract: The present invention provides a process for producing a (poly)alkylene glycol monoalkyl ether with high selectivity and high yield. In this process, the (poly)alkylene glycol monoalkyl ether is produced by reacting an olefin and a (poly)alkylene glycol in the presence of a catalyst, wherein: 1) a crystalline metallosilicate is used as the catalyst, and at least a portion of the used catalyst is regenerated, and the regenerated catalyst is recycled as the catalyst for the reaction; or 2) the reaction between the olefin and the (poly)alkylene glycol is carried out in the presence of either or both of a (poly)alkylene glycol dialkyl ether and an alcohol.

Abstract: There is provided a process for producing a (poly)alkylene glycol monoalkyl ether from an olefin and a (poly)alkylene glycol at a high conversion at a high selectivity. This process comprises reacting an olefin with a (poly)alkylene glycol in the presence of a crystalline metallosilicate as a catalyst.

Abstract: An improved process is discloses to prepare an amino carboxylic acid salt. According to the process an aqueous solution of an amino alcohol is contacted with an alkali metal hydroxide in the presence of an effective amount of Raney copper catalyst that has from about 10 parts per million of an element selected from the group consisting of bismuth, tin, antimony, lead, germanium and mixtures thereof.

Abstract: There is provided a novel process for producing aminocarboxylic acid salts useful as starting materials of agricultural chemicals and medicines, chelating agents, food additives, and so on. This process is characterized in that when producing an aminocarboxylic acid salt by an oxidative dehydrogenation reaction of an amino alcohol in the presence of an alkali metal hydroxide and/or an alkaline earth metal hydroxide, a copper-containing catalyst and water, the reaction is performed by adding an aluminum metal and/or an aluminum compound (e.g., sodium aluminate and aluminum hydroxide) to the reaction system.

Abstract: The present invention provides a novel process for producing an aminocarboxylic acid salt which is useful as a material for agricultural chemicals and drugs, a chelating agent, a food additive, etc. The process produces an aminocarboxylic acid salt from an aminoalcohol by subjecting the aminoalcohol to an oxidative dehydrogenation reaction in the coexistence of an alkali metal hydroxide and/or an alkaline earth metal hydroxide, a copper-containing catalyst and water, and is characterized by performing the reaction while maintaining the nickel concentration in the reaction mixture at 40 ppm or less.

Abstract: A method for the production of a 1,3-dioxolane represented by the general formula III: ##STR1## wherein R.sup.1 is hydrogen atom or an alkyl group of 1 to 5 carbon atoms and R.sup.2 is hydrogen atom or an alkyl group of 1 to 2 carbon atoms or a phenyl group, which method comprises reacting an aldehyde represented by the general formula I ##STR2## wherein R.sup.1 has the same meaning as defined above, with an alkylene oxide represented by the general formul II: ##STR3## wherein R.sup.2 has the same meaning as defined above, in an alkylene glycol solvent corresponding to said alkylene oxide in the presence of at least one catalyst selected from the group consisting of bromides of alkali metals, iodides of alkali metals, bromides of alkaline earth metals, and iodides of alkaline earth metals.

Abstract: The present invention discloses an acid gas absorbent composition, comprising a diethylene glycol dialkyl ether represented by the general formula I:R.sup.1 O(C.sub.2 H.sub.4 O).sub.2 R.sup.2 (I)wherein R.sup.1 and R.sup.2 are independently an alkyl group of 1 to 4 carbon atoms, and a polyethylene glycol dialkyl ether represented by the general formula II:R.sup.3 O(C.sub.2 H.sub.4 O).sub.n R.sup.4 (II)wherein R.sup.3 and R.sup.4 are independently an alkyl group of 1 to 4 carbon atoms and n is an integer in the range of 3 to 8.

Abstract: Diisopropyl ethers of oligomers of ethylene glycol having between 2 and 8 ethylene glycol moieties and an average molecular weight between 190 and 300, are more useful physical absorption solvents for the separation of acid gases than are dimethyl, diethyl, ethyl butyl, propyl butyl, dibutyl, or higher alkyl ethers of the same ethylene glycol oligomers, because of a combination of high solution capacity, high separation efficiencies, low viscosity, low gas pressure, and resistance to hydrolysis during use. The diisopropyl ether of diethylene glycol is especially advantageous for use at absorber temperatures below 0.degree. C. Because of low viscosity, the diisopropyl ethers can often be substituted in separation equipment designed for use with chemical rather than physical solvents, thereby realizing the lower operating costs associated with physical solvents without requiring new capital investment.