7 results about "Tris" patented technology

The invention relates to phosphorus-containing vegetable oil based flame-retardant polyol and a preparation method and application thereof. The preparation method of the phosphorus-containing vegetable oil based flame-retardant polyol comprises the following steps: carrying out epoxide reaction on tung oil methyl ester with hydrogen peroxide and methanoic acid under the catalyzing effect of a home-made phase transfer catalyst at first to prepare multi-functionality-degree epoxidized tung oil methyl ester; reacting the obtained epoxidized tung oil methyl ester with reactive-hydrogen-containing DOPO (DOPO belongs to phosphorus-containing phenanthrene ring and heterogeneous ring compound, and the full name of DOPO is 9,10-diamine-9-oxygen heterocyclic-10- phosphaphenanthrene-10-oxide) to obtain the phosphorus-containing vegetable oil based flame-retardant polyol. The obtained polyol is a flame retardant, the synthesized structural flame-retardant vegetable oil based polyol is used in hard polyurethane flame-retardant foam, mechanical strength and flame retardance of the foam are improved, and a preparation process is simple, convenient to operate and easy to obtain. The phosphorus-containing vegetable oil based flame-retardant polyol is compounded with tris( 2-chloropropyl) phosphate, phosphorus-nitrogen synergistic flame retardant effect is good, the use amount of a flame retardant can be reduced, the flame retardant effect is much better than the flame retardant effect of the tris( 2-chloropropyl) phosphate which is used independent, and the oxygen index (LOI) can reach 29%.

The invention relates to a detection kit for common campylobacter in foods and a detection method thereof, which is used for detecting and monitoring the microbial contamination of the foods. In the kit, 1mL of detection solution contains 10mM of Tris.Cl, 50mM of KCl, 25mM of MgCl2, 2.5mM of dNTP (dATP, dGTP, dCTP and dTTP) respectively, 5U/mu L of Taq DNA polymerase and 10muM of four kinds of common campylobacter primer pairs; the method adopts the virulence factor genes of the campylobacter to carry out detection, and can simultaneously differentiate four types when detecting the campylobacter; the detection time is only 1.5 days and is greatly shortened in comparison with the detection time of a traditional microbiology method; and the detection limit is below 15cfu/mL, and the campylobacter can be detected so long as the number of the campylobacter in bacterium liquid per milliliter is not less than 15. Moreover, the method has shorter detection time in comparison with the traditional method, is simpler and quicker, can save a large number of labour force and resources and is suitable for the requirement of quick detection.

The invention discloses a (S)-1-(3-hydroxy-1-phenylpropyl)thiourea unilateral-modified Fe-Anderson-type heteropoly acid catalyst, a preparation method and an application thereof. According to the invention, ammonium molybdate and ferric sulfate are reacted under acidic condition to generate Fe-Anderson-type heteropoly acid parent; then heteropoly acid parent and tris(hydroxymethyl)aminomethane are reacted under backflow condition to obtain amino unilateral-modified Fe-Anderson-type polyoxometallate; (S)-1-(3-hydroxy-1-phenylpropyl)isorhodanate is synthesized; and finally, polyoxometallate and (S)-1-(3-hydroxy-1-phenylpropyl)isorhodanate are subjected to the reaction to obtain the target product. The preparation method has the advantages of simple process, high yield, mild reaction condition, and environment friendlessness; the catalyst can be used for a self-oxidation coupling reaction of a aryl methylamine compound, and has the advantages of environment pollution and high efficiency, high corresponding selectivity, and easy recovery and utilization.

The invention provides a solution for evaluating the glucose metabolism based on the sialology method and an evaluation method thereof. The solution comprises the following components: 60-150 mM of pH 7.6 Tris-HCl, 0.12-0.4% of blue chromogenic substances; 1200-2500 IU/L of glucose oxidase; 120-250 IU/L of horse radish peroxidase; and 600-1500 IU/L of antioxidant. The evaluation method comprises the steps of 1) collecting the saliva; 2) mixing the saliva with the above solution; 3) determining the level of glucose metabolism of an organism according to the color depth of the mixed solution of the saliva and the solution. According to the technical scheme of the invention, the level of glucose metabolism is evaluated by adopting the above solution that can change in color depth after reacting with the saliva. In this way, the inconvenience caused by the detection of the blood glucose can be solved. Meanwhile, the evaluation method is visual, convenient, fast, high in efficiency and high in accuracy. At the same time, the antioxidant is added into the above solution, so that the storage life of the solution is prolonged. Moreover, the waste is avoided and the cost is saved.

The invention relates to a flame retardant tris(hydroxyethyl) isocyanurate trisilicate propyl bromide compound and a preparation method thereof. The compound has a structure shown in the specification, wherein -OC3H6Br is 2-bromo-1-propoxy or 1-bromo-2-propoxy or a mixture of the 2-bromo-1-propoxy and the 1-bromo-2-propoxy. The preparation method comprises the following steps: dropwise adding bromopropanol into an organic solution of silicon tetrachloride at a temperature being below 25 DEG C and reacting for 2 hours at 45 DEG C, wherein the molar mass of the bromopropanol is equal to that of the silicon tetrachloride; dropwise adding an organic solution of tris(hydroxyethyl) isocyanurate and reacting for 9-12 hours at 80-95 DEG C, wherein the molar mass of the organic solution of the tris(hydroxyethyl) isocyanurate is 1/3 that of the silicon tetrachloride; cooling to the temperature being below 55 DEG C, dropwise adding the bromopropanol, and reacting for 8-10 hours at 80-90 DEG C, wherein the molar mass of bromopropanol is 2-3 times that of the silicon tetrachloride; adding an acid binding agent, preserving heat and stirring for 1 hour; performing purification to obtain the flame retardant tris(hydroxyethyl) isocyanurate trisilicate propyl bromide. The compound disclosed by the invention is suitable to be as the flame retardants of the materials such as polyvinyl chloride, polyurethane, epoxy resin and unsaturated resin, is simple in preparation process and low in cost, and can be put into industrial production easily.

The invention relates to the technical field of textile fabrics, in particular to a fireproof wear-resistant fabric. The fireproof wear-resistant fabric is characterized by being prepared in the stepsthat polyethylene terephthalate and modified graphene blended yarn is woven into a base cloth, and then the base cloth is treated through a finishing liquid. According to the fireproof wear-resistantfabric, the N-[3-[tris(2-methoxyethoxy)silyl]propyl]ethane-1,2-diamine modified graphene oxide and polyethylene terephthalate blended yarn is woven into the base cloth, and the base cloth is treatedby using the flame-retardant finishing liquid which is prepared by compounding poly-bis-trimethylolpropane thiophosphoryl urea and trimethylsilanolate cage sulfide PEPA ester. The fabric has excellentmechanical tensile property, fire resistance, wear resistance and other properties, and can be widely applied to the fields of clothing and home textiles.