Abstract: A surfactant composition contains: a C12 compound of the following formula (1): where A is an alkylene group having 1 to 3 carbon atoms, x is 1 to 50, and m+n is 9; a C13 compound of the formula (1), where A is an alkylene group having 1 to 3 carbon atoms, x is 1 to 50, and m+n is 10; a C14 compound of the formula (1), where A is an alkylene group having 1 to 3 carbon atoms, x is 1 to 50, and m+n is 11; and a Y compound of the formula (1), where A is an alkylene group having 1 to 3 carbon atoms, x is 1 to 50, and m+n is at least one of 8 or less and 12 or more.

Abstract: A higher secondary alcohol alkoxylate precursor is obtained by reacting a long-chain olefin with a (poly)alkylene glycol. The precursor has a content of (poly)alkylene glycol of 0.2% by mass or lower with respect to the total mass of the higher secondary alcohol alkoxylate; a higher secondary alcohol alkoxylate adduct which is an alkylene oxide adduct of the higher secondary alcohol alkoxylate precursor; and a higher secondary alkyl ether sulfate ester salt which is a sulfated product of the higher secondary alcohol alkoxylate precursor or the higher secondary alcohol alkoxylate adduct.

Abstract: A method for producing N-vinyl-2-pyrrolidone by crystallization including: controlling a water content in a feed N-vinyl-2-pyrrolidone solution at an inlet of a crystallizer so as to be not lower than 0.7% by weight and not higher than 10% by weight based on the total weight of the N-vinyl-2-pyrrolidone solution; and supplying the feed N-vinyl-2-pyrrolidone solution to a crystallization process.

Abstract: A method for producing N-vinyl-2-pyrrolidone by crystallization including: controlling a water content in a feed N-vinyl-2-pyrrolidone solution at an inlet of a crystallizer so as to be not lower than 0.7% by weight and not higher than 10% by weight based on the total weight of the N-vinyl-2-pyrrolidone solution; and supplying the feed N-vinyl-2-pyrrolidone solution to a crystallization process.

Abstract: High-purity NVP can be produced by comprising at least two crystallization processes and supplying the mother liquor from the first crystallization process to the second crystallization process. Further, high-purity NVP can be obtained continuously and stably without plugging caused by depositing of crystals on the heat transfer surface of a crystallizer by controlling the water content in a feed NVP solution at the inlet of the crystallizer so as to be not lower than 0.7% by weight and not higher than 10% by weight.

Abstract: The present invention provides: a production process for an alkylene oxide addition product, by which a high-molecular alkylene oxide addition product can be obtained with ordinary production facilities while the formation of by-products is suppressed; and production processes for derivatives from the alkylene oxide addition product.

Abstract: A core/shell type polyamine dendrimer compound comprising core regions formed of a dendrimer compound and shell regions formed by the reaction of at least one amine compound. A method for the production of the compound is also disclosed.

Abstract: The present invention provides: a production process for an alkylene oxide addition product, by which a high-molecular alkylene oxide addition product can be obtained with ordinary production facilities while the formation of by-products is suppressed; and production processes for derivatives from the alkylene oxide addition product.

Abstract: When the reaction solution formed during the addition of an alkylene oxide to an active hydrogen-containing compound has viscosity of not less than 10 mPa·s, this invention provides a method for stirring the reaction solution by the rotation of a vane or vanes continuously disposed in the vertical direction within an agitating reaction vessel in such a manner that the numerical value C represented by the following formula (1): C=A/(h2−h1)  (1) (wherein A denotes the length (m) of the vane or the vanes newly immersed by the supply of alkylene oxide, h1 denotes the height (m) of the liquid level before the supply of alkylene oxide, and h2 denotes the height (m) of the liquid level after the supply of alkylene oxide) may be not less than 0.5. By employing the method of this invention, it is made possible to effect addition of an alkylene oxide to the active hydrogen-containing compound with high efficiency.

Abstract: When the reaction solution formed during the addition of an alkylene oxide to an active hydrogen-containing compound has viscosity of not less than 10 mPa.

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 disclosure is a liquid absorbable material comprising a porous formed article possessed of partitioning walls of a cross-linked polymer and continued micropores, characterized in that said material has a density in the range of 0.2 to 1.0 g/cm.sup.3, and (a) that said partitioning walls exhibit a swelling degree to kerosine in the range of 2 to 10, and that said material has an absorption capacity per unit volume, the capacity being at least 4 cm.sup.3 /cm.sup.3 for water, ethanol, toluene and kerosine, respectively, or (b) that said material has an absorption capacity per unit weight, the capacity being at least 10 g/g for water, ethanol, toluene and kerosine, respectively, the liquids being at a temperature not less than the softening point of the cross-linked polymer. The liquid absorbable material can absorb liquids such as water and petroleum quickly and expand with the absorbed liquid.

Abstract: An oil-absorbent composition including 30 to 99.5 parts by weight of (I) an oil-absorbent, cross-linked polymer formed from 96-99.999% by weight of (A) monomer having a polymerizable unsaturated group in the molecule, said monomer (A) containing mainly a monomer having a solubility parameter of not more than 9, and 4-0.001% by weight of (B) a cross-linking monomer having at least two polymerizable unsaturated groups in the molecule, provided the sum of monomer (A) and cross-linking monomer (B) is 100%, and 70 to 0.5 to parts by weight of (IV) at least one compound selected from the group consisting of (II) inorganic compounds having a methanol value of not less than 25% and (III) substantially water insoluble organic acid salts, provided the sum of oil-absorbent, cross-linked polymer (I) and compound (IV) is 100 parts by weight.

Abstract: A swellable oil-absorbent agent formed of a cross-linked polymer (P) obtained by polymerizing a monomer component comprising 90 to 99.999% by weight of a monomer having as a main moiety thereof an alkyl (meth)acrylate the alkyl group of which has 10 to 16 carbon atoms and possessing one polymerizable unsaturated group in the molecular unit thereof and 0.001 to 10% by weight of a cross-linkable monomer possessing at least two polymerizable unsaturated groups in the molecular unit thereof (providing that the total of the amount of the polymerizable monomer and that of the cross-linkable monomer is 100% by weight).

Abstract: The disclosure is a liquid absorbable material comprising a porous formed article possessed of partitioning walls of a cross-linked polymer and continued micropores, characterized in that said material has a density in the range of 0.2 to 1.0 g/cm.sup.3, and (a) that said partitioning walls exhibit a swelling degree to kerosine in the range of 2 to 10, and that said material has an absorption capacity per unit volume, the capacity being at least 4 cm.sup.3 /cm.sup.3 for water, ethanol, toluene and kerosine, respectively, or (b) that said material has an absorption capacity per unit weight, the capacity being at least 10 g/g for water, ethanol, toluene and kerosine, respectively, the liquids being at a temperature not less than the softening point of the cross-linked polymer. The liquid absorbable material can absorb liquids such as water and petroleum quickly and expand with the absorbed liquid.

Abstract: Gel-like fragrance composition which comprises an aqueous gel comprising an aqueous fluid and a gelling agent incorporated an oil-absorbable resin carrying a fragrant material. Without unfavourable changes of fragrant material, occurring in the preparation of the fragrance, such as volatile emission, spoilage, discoloration and foreign odor development, there is provided a gel-like fragrance composition allowing the fragrance selection spectrum to be widened, with excellent lasting deodorant effect and fragrant balance, and in particular with good durability of the fragrance at latter stages of use.

Abstract: A swellable oil-absorbent agent formed of cross-linked polymer (P) obtained by polymerizing a monomer component comprising 90 to 99.999% by weight of a monomer having as a main moiety thereof an alkyl (meth)acrylate the alkyl group of which has 10 to 16 carbon atoms and possessing one polymerizable unsaturated group in the molecular unit thereof and 0.001 to 10% by weight of a cross-linkable monomer possessing at least two polymerizable unsaturated groups in the molecular unit thereof (providing that the total of the amount of the polymerizable monomer and that of the cross-linkable monomer is 100% by weight).