摘要:
A method for producing water soluble menthol compound produces a menthol compound that is soluble in alcohol and ether, yet insoluble in water. The menthol compound provides antibacterial, anti-inflammatory, and bacteriostatic effects when combined with other compounds to produce numerous medical and consumable compositions, including, without limitation, eye drops, mouth wash, juices, and noodles. In some embodiments, the produced menthol compound is a menthol water-soluble sodium salt or sylvite. However in other embodiments, the menthol compound may include a menthol crystal configuration. The steps include: adding a metal to a menthol solution. Enabling the reaction; dissolving the solid mixture; applying osmosis membrane dialysis to the dissolved solid mixture; filtering, drying, and washing the solid mixture; decompressing and removing water from the solid mixture; and collecting the water soluble menthol compound.
摘要:
The present invention provides titanium based precursor for polyolefin catalyst with desired morphology and high particle strength. The of preparation of the precursor in accordance with the present invention obviates the use of iodine.
摘要:
The invention provides a metal alkoxide complex of Formula (I), wherein X, M, R1, R2, R3, m, n, y and z are as defined in the Description. The invention also provides a catalyst composition comprising the metal alkoxide complex and a hydroxy-containing compound, wherein the molar ratio of the metal alkoxide complex to the hydroxy-containing compound is 1:01-1000. The invention also provides a production method of poly-ε- caprolactone or polyactide, wherein an ε-caprolactone monomer or a lactide monomer is reacted in the presence of the metal alkoxide complex or catalyst composition to obtain poly-ε-caprolactone or polylactide. The metal alkoxide complex and the catalyst composition thereof can be used to catalyze the synthesis of poly-ε- caprolactone or polylactide with a high efficiency. The molecular weight of polycaprolactone or polylactide can be controlled by the molar ratio of the metal alkoxide complex and the hydroxy-containing compound, and is adjustable in the range of 1000-600,000, and wherein the molecular weight distribution is from 1.03 to 1.50. [Xn-mM(OCR1R2R3)m]y·(organic solvent)z (I)
摘要:
A method of producing a solid glycerol derived material includes the steps of combining glycerol with a metal oxide, the glycerol having a water content of between about 5 and 50%, and the rate of combination of the glycerol and the metal oxide and the amount of the metal oxide being selected so that at least part of the water present in the glycerol reacts with the metal oxide in an exothermic reaction and at least part is driven off by heat produced in the exothermic reaction to produce the solid glycerol derived material.
摘要:
The invention relates to a method and device for dissolving solid bodies with a liquid, in particular for bringing solid bodies of different shapes and sizes, but mainly very course bodies, in contact with liquids, in order to dissolve them by a chemical reaction or dispersion. The device comprises a closed container (1) that is partially filled with the liquid and into which the solid bodies are introduced before being received inside the container (1) into a basket (2) that is movable relative to the container (1), and the solid bodies inside the basket (2) are brought into contact with the liquid. For the solid bodies to be introduced more easily, quickly and also more uniformly into the basket inside the container (1), in order to be dissolved, the basket (2) is suspended inside the container (1) in an oscillating manner, such that it can be moved back and forth, after it is filled with a bulk load of solid bodies, in alternating directions of rotation relative to the container (1).
摘要:
The invention relates to a process for preparing an alcoholic solution of an alkali metal alkoxide from alkali metal hydroxide and alcohol in a reaction column, the alcohol and the alkali metal hydroxide being conducted in countercurrent, which is characterized in that a reflux ratio of at least 0.05 is established in the reaction column.
摘要:
Compounds, synthesis of, and methods for synthesizing metal alkoxide derivatives; and metal alkoxide derivatives for use as flame retardants are described. Group 13 metal alkoxides having flame retardant properties may be prepared by reacting the group 13 metal trihydroxide with an alcohol.
摘要:
Compounds, synthesis of, and methods for synthesizing metal alkoxide derivatives; and metal alkoxide derivatives for use as flame retardants are described. Group 13 metal alkoxides having flame retardant properties may be prepared by reacting the group 13 metal trihydroxide with an alcohol.
摘要:
The invention relates to an activated alkaline earth metal, to a method for its production and the use of the activated alkaline earth metal for the preparation of Grignard compounds and organoalkaline earth metal compounds.
摘要:
A method of preparing magnesium alcoholates Mg(OR)2 (where R=alkyl residue having 2 to 10 carbon atoms) is described. Addition products of 1,3-dienes to magnesium metal in a polar, aprotic solvent are reached with an alcohol R—OH.