173results about How to "Less dosage" patented technology

The invention relates to a polyvinyl alcohol radical composite coating fresh keeping packaging material nano TiO2 functional modification method, which comprises the following steps: adding nano TiO2 and SiO2 into a polyvinyl alcohol aqueous solution and stirring; carrying out ultrasonic mixing on a mixed liquor; placing the mixed solution in a reaction kettle after ultrasonic; heating, stirring and reacting at constant temperature; adding stearic acid-alcohol mixed solution and glutaraldehyde with the same temperature and stirring; and carrying out cross-linking reaction at a constant temperature; stirring and cooling to a room temperature after reaction, so as to prepare into a nano composite coating new material. With the adoption of the polyvinyl alcohol radical composite coating fresh keeping packaging material nano TiO2 functional modification method, the nano TiO2 is adopted to modify a polyvinyl alcohol radical composite coating fresh keeping packaging material; the new material film formation moisture permeability is obviously reduced, and anti-bacteria fresh keeping performance of the packaging material is obviously improved.

A composite additive for preparing hematite concentrate pellets comprises the following components: humic acid, calcium peroxide, and paigeite. During application, the composite additive is added which has a mass percent of 0.5%-1.6% of the total mass of the hematite concentrates, and the finished product pellets are obtained by pelletization, preheating, and roasting. Compared with pellets prepared by traditional technology, the hematite pellets prepared by the composite additive of the invention have improved falling strength of the green pellets, and compression strength of the finished product pellets; the preheating temperature and roasting temperature suitable for the pellets are reduced; both the preheating time and roasting time are shortened; the TFe grade is increased by 0.8%-1.2%. The composite additive of the invention has reasonable component ratios, is easy to process and manufacture, has a low using amount and a low residual amount, can significantly improve the pelletability of hematite concentrates which are difficult to be palletized, can improve the green pellet quality, has good heat stability, and can effectively reduce the preheating and roasting temperatures and shorten the preheating and roasting time of hematite concentrates. The composite additive of the invention is applicable to the production of oxidized pellets by hematites, and is especially applicable to the production of oxidized pellets by specularites. The composite additive of the invention is applicable to large-scale industrial production.

The invention discloses special grease for refrigeration and prepared by mixing lard oil and palm oil and a preparation method thereof. The preparation method of the special grease for refrigeration includes the steps of heating and melting the lard oil, the palm olein and palm stearin, adding a food-grade emulsifier and water into a totally melt oil phase, carrying out emulsification, then carrying out cooling and kneading, and finally curing to obtain the special grease for refrigeration. The special grease for refrigeration comprises, by weight, 8-12 parts of the lard oil, 10-80 parts of the palm olein, 10-80 parts of the palm stearin and 1-2.5 parts of the food-grade emulsifier. An obtained special grease product for refrigeration is in a beta crystal form, the SFC curve of the product is smooth, crystals are fine, the product has good processing characteristics and certain plasticity, compatibility of the grease is good at low temperature, and the oil separation phenomenon can be prevented from occurring.

The invention discloses an additive for wear resistance of lubricating oil, which comprises the following components in part by weight: 15 to 35 parts of antiwear agent, 6 to 29 parts of detergent dispersant and 12 to 26 parts of antioxidant preservative, wherein the antiwear agent consists of boric acid tributylester, phosphonic acid dibutyl ester, copper isooctoxyborate and cupric cyclohexoxylborate; the detergent dispersant consists of polybutene amine, polyisobutene carbamic acid ester and 2-aminopyridine; and the antioxidant preservative is boronized butanimide. The additive has wide use range, can be used in paraffin, naphthene and intermediate base oil, and also can be used in synthetic and semi-synthetic base oil. The additive has the advantages of effectively improving the wear resistance of the lubricating oil, strengthening the bearing capacity of the lubricating oil, making the lubricating oil have long service life, and having small dosage in the lubricating oil and simple and convenient preparation process.

The invention discloses an organic phosphoric acid compound, a synthesis method of the compound and application of the compound as a chalcopyrite collector. The synthesis method of the organic phosphoric acid compound comprises the steps that an organic carboxylic acid compound and phosphorous acid are subjected to a condensation reaction under the function of phosphorus pentoxide, and a product of the condensation reaction is hydrolyzed by water vapor, separated and purified to obtain the compound. The organic phosphoric acid compound is used for the flotation of chalcopyrite, the selectivityof the compound is high, the agent use amount is small, the cost is low, flotation indexes are stable, and efficient flotation separation can be carried out on chalcopyrite and pyrite.

The invention discloses a one alkyl triphenyl substituted group based phosphonium salt preparation method and application. The preparation method includes that a one alkyl triphenyl phosphonium salt halide I is obtained through reaction of several alkyl halides and triphenylphosphine in a DMF (dimethyl formamide) solvent through nucleophilic substitution, and an aqueous solution of a compound I and a sodium tetrafluoroborate aqueous solution are subjected to ion exchange to prepare the phosphonium salt through high yield of recrystallization. The phosphonium salt preparation method and application has the advantages of low cost and easy obtaining of raw materials and low cost, one alkyl triphenyl substituted group containing phosphonium salt II serving as a phase transfer catalyst has the advantages of high catalytic activity, less required dose, long activity time, high thermal stability and low toxicity, high reaction recovery and the like in catalytic fluorine chlorine exchange reaction, and wide commercial application prospect is achieved.

The invention belongs to the field of feed additives and specifically relates to a composite nano-zinc oxide additive and its preparation method and application. In allusion to problems such as low bioavailability and instable using effect of nano-zinc oxide, the invention provides a composite nano-zinc oxide additive and its preparation method and application. The composite nano-zinc oxide additive comprises the following ingredients (by weight): 70-80% of nano-zinc oxide, 5-15% of plant essential oil and 2-10% of oligosaccharide. By cooperation of plant essential oil and oligosaccharide and nao-zinc oxide, the anti-diarrhea effect of naon-zinc oxide is enhanced through compatibility of other synergistic substances on one hand; and on the other hand, damage of gastric acid to nano-zinc oxide passing through stomach is reduced such that effective dose of nano-zinc oxide which succeeds in reaching the intestinal tract is increased so as to enhance the anti-diarrhea effect of piglets.

The invention relates to a pure Chinese medicinal composition for improving egg yolk color, which is prepared by mixing the following components in parts by weight: 15 to 35 parts of red pepper, 20 to 60 parts of pine needle, 15 to 35 parts of kelp, 15 to 35 parts of clover, 10 to 25 parts of calendula officinalis, and 10 to 25 parts of marigold. The pure Chinese medicinal composition has the beneficial effects of reasonable prescription, simpleness in preparation, no pollution, no toxic or side effect and no medicine residues; an advanced superfine grinding technology is adopted in the preparation process, so that effective components of the medicaments can be quickly and sufficiently released, the bioavailability of effective components is greatly improved, and the adding dosage is low with only 0.01 percent which is far lower than that of a common Chinese medicinal product. Clinical application proves that: the pure Chinese medicinal composition has special effect in improving the egg yolk color, and has wide application prospect.