摘要:
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.
摘要:
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. The present invention production process for an alkylene oxide addition product comprises the step of carrying out an addition reaction of an alkylene oxide to a hydroxyl-group-containing saturated compound in order to obtain the alkylene oxide addition product; with the production process being characterized by further comprising: the initial step of causing the alkylene oxide to add to the hydroxyl-group-containing saturated compound in an amount of not larger than 20 mols on average of the alkylene oxide per 1 mol of the hydroxyl-group-containing saturated compound to thereby obtain an alkylene oxide low-mol-addition product; and the molar-degree-of-polyaddition-adjusting step of causing the alkylene oxide to further add to the alkylene oxide low-mol-addition product as obtained in the initial step; wherein a portion of the entirety of the alkylene oxide low-mol-addition product as obtained in the initial step is used in the molar-degree-of-polyaddition-adjusting step.
摘要:
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. % of (B2) (poly)alkylene glycol higher alkyl ether derivative, respectively having a methyl group for R1 and an alkyl group of not less than two carbon atoms for R1 in the general formula (1) representing the derivatives: (wherein R1 and R2 represent alkyl groups whose total number of carbon atoms is in the range of 7-29, the number of carbon atoms of R2 is larger than the number of carbon atoms of R1, A represents a lower alkylene group, n represents a real number in the range of 1-300 on average, x represents 0 or 1, y represents a real number in the range of 1-10 on average, and R3 represents an optionally substituted organic residue of 1-60 carbon atoms [excluding the carbon atoms of the substituent]) and a deterging agent, a lubricating agent, or a dermatological medicine for external use containing the (poly)alkylene glycol higher alkyl ether derivative composition. The composition possesses such characteristic features as containing no oil-soluble component of low molecular weight, emitting odor sparingly, exhibiting a low stimulating property, having no foaming property, abounding in penetrating force, allowing thorough separation of the foam from a deterged article, and enjoying such low viscosity as to allow great ease of handling.
摘要:
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. The present invention production process for an alkylene oxide addition product comprises the step of carrying out an addition reaction of an alkylene oxide to a hydroxyl-group-containing saturated compound in order to obtain the alkylene oxide addition product; with the production process being characterized by further comprising: the initial step of causing the alkylene oxide to add to the hydroxyl-group-containing saturated compound in an amount of not larger than 20 mols on average of the alkylene oxide per 1 mol of the hydroxyl-group-containing saturated compound to thereby obtain an alkylene oxide low-mol-addition product; and the molar-degree-of-polyaddition-adjusting step of causing the alkylene oxide to further add to the alkylene oxide low-mol-addition product as obtained in the initial step; wherein a portion of the entirety of the alkylene oxide low-mol-addition product as obtained in the initial step is used in the molar-degree-of-polyaddition-adjusting step.
摘要:
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. Further, the use of this method allows repression of the content of a by-product which causes the degradation of the characteristic properties of the alkoxylated compound.
摘要:
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.
摘要:
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).
摘要:
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.
摘要:
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.
摘要:
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.