36 results about "Methyl-beta-cyclodextrin" patented technology

The invention provides a viscosity reduction type composite polycarboxylic acid water reducing agent. The viscosity reduction type composite polycarboxylic acid water reducing agent is prepared from a polycarboxylic acid water reducing agent A, a polycarboxylic acid water reducing agent B, a polycarboxylic acid water reducing agent C, a beta-cyclodextrin derivative, methyl-beta-cyclodextrin and de-ionized water, wherein the polycarboxylic acid water reducing agent A is prepared from the following preparation raw materials: isopentenyl polyoxyethylene ether, acrylic acid, an initiator 1, a chain transferring agent 1 and de-ionized water; the polycarboxylic acid water reducing agent B is prepared from the following preparation raw materials: methylallyl polyethylene glycol ether, acrylic acid, sodium methallyl sulfonate, an initiator 2, a chain transferring agent 2 and de-ionized water; the polycarboxylic acid water reducing agent C is prepared from the following preparation raw materials: diallyl capped polyether, acrylic acid, methylallyl polyethylene glycol ether, an initiator 3, a chain transferring agent 3 and de-ionized water; the diallyl capped polyether is prepared by carrying out allylation capping on the methoxy polyethylene glycol through allyl bromide; the beta-cyclodextrin derivative is beta-cyclodextrin modified by sodium dodecyl sulfonate and carbon nanotubes.

The extracting head for solid phase micro extraction of cyclodextrin derivative includes quartz fiber and its coating and the coating is composite coating of 2, 6-di-oxy-methyl-beta-cyclodextrin and hydroxyl silicon oil bonded to the surface of the quartz fiber. The preparation process of the extracting head includes the following steps: diluting 2, 6-di-oxy-methyl-beta-cyclodextrin with dichloromethane, adding hydroxyl silicon oil, tetraethoxy silane, 3-(2, 3-epoxy propane) propyl trimethoxy silane and water containing trifluoro acetic acid, adding hydrogen-containing silicon oil, ultrasonic vibration and centrifuging, and taking supernatant; inserting one end of the quartz fiber after eliminating protecting layer and drying into the sol liquid, taking out, drying and ageing under the protection of nitrogen to obtain the extracting head. The present invention has high heat stability, high solvent flush resistance, long service life, high in Benzedrine medicine capacity and excellent application foreground in medicine analysis, including stimulant detection.

The invention discloses an aflatoxin M1 fluorescent sensitizer. The aflatoxin M1 fluorescent sensitizer is composed of methyl-beta-cyclodextrin and a Hg<2+> containing solution, wherein the mole ratio of methyl-beta-cyclodextrin to AFM1 is (5.8*10<5>):1; the mole ratio of Hg<2+> to AFM1 is (6.6*10<4>):1. The Hg<2+>-M-beta-CD fluorescent sensitizer has a remarkable reinforcing effect on aflatoxin M1 fluorescence and the reaction is quick. A related coefficient R of an AFM1 to-be-detected solution system can reach 0.999 or above in the concentration range of 0.01-2 [mu]g / L and the detection limit is 0.0026 [mu]g / L. The quick, sensitive and economic fluorescence reinforcing agent is expected to be directly applied to detection of AFM1 in dairy products and a new idea and a new approach are provided for rapid detection of AFM1.

The invention discloses a method for preparing 2-chlorine-4, 6-dimethoxy-1, 3, 5-triazine, mainly comprising the following steps: firstly, mixing sodium bicarbonate, water and catalytic amounts of catalyst hydroxypropyl methyl-beta-cyclodextrin uniformly to obtain a reactive solution, wherein the mass ratio of the water and the sodium bicarbonate is 1:3-1:10;secondly, at the temperature of 0-30 DEG C, slowly dripping a methyl alcohol solution in which cyanuric chloride is dissolved in the obtained solution in the first step to generate mono-substituted triazine, wherein the mass ratio of the cyanuric chloride and the methyl alcohol is 0.3-0.6:1, the mass ratio of the cyanuric chloride and the sodium bicarbonate is 0.7-0.9:1; and thirdly, rising the temperature to 35-70 DEG C to enable themono-substituted triazine generatd in the third step to continuously react to generate disubstituted triazine so as to obtain a mixture containing the disubstituted triazine. The raw materials used by the invention has low price, the cost of production materials is reduced. Compared with the prior art, the invention has simple process, higher yield of target products and is more suitable for industrialized production.

The invention discloses application of methyl-beta-cyclodextrin in preparation of medicines for preventing and controlling BmNPV from infecting silkworm cells and provides a medicine which takes MbetaCD as an active ingredient and is used for preventing and controlling BmNPV from infecting cells. The medicine has significance in intensive research on virus invasion mechanisms and the research aspect of receptors of hosts infected by baculovirus. When the MbetaCD concentration is over 8mM, the virus infection can be completely inhibited. The medicine has important application and popularization values in research and development and production of silkworm medicines for controlling grasserie.

It is the object of the present invention a composition containing an N-acyl-ethanolamine in a solubilized form, particularly a solution for ophthalmic, intra-articular or intravesical use.Particularly, the present invention relates to a water-soluble composition comprising one or more N-acylethanolamines (NAE) in the form of an inclusion complex in methyl-beta-cyclodextrin (MβCD).