33results about How to "Mild conditions in the production process" patented technology

The invention discloses a preparation method of mangiferin, comprising the following steps: (1) taking raw material mango leaves, drying, pulverizing, using enzyme solution in an amount of 6 to 10 times the amount of the raw material by weight to soak for 0.1hr to 1.0hr, then carrying out water bath and enzymolysis in the case of the pH value ranging from 4.0-7.0 and the temperature ranging from 35 DEG C to 55 DEG C, and fully stirring; (2) filtering, taking dregs of a decoction, using petroleum ether in an amount of 6 to 10 times by weight respectively to 2 to 3 times; (3) using 60%-80% of ethanol water in an amount of 6 to 10 times of the raw material by weight to extract the degreased dregs of a decoction of step (2) 2-3 times, combining the extracting liquid, and recycling alcohol; (4)spraying and drying the extracting liquid of step(3) to obtain dry powder, using 10%-30% of ethanol water to dissolve the dry powder, and then centrifuging and filtering; and (5) taking the filter liquor after centrifugal filtration in (4), carrying out water bath and pressure reduction, concentrating and drying to obtain the mangiferin. In the invention, an enzymatic method is utilized to extract the mangiferin from mango leaves so as to utilize waste materials, thereby greatly lowering the cost.

The invention provides a preparation method of high-purity aluminum alkoxide and aluminum oxide powder from aluminium (alloy) scrap. The method comprises the steps of: reacting waste or used aluminum alloy scrap products with fatty alcohol with a carbon atomic number of 2-4 or higher alcohol under catalysis of AlCl3, wherein a reaction temperature is equal to or higher than that of the employed alcohol; and after the reaction, carrying out recrystallization and vacuum distillation to obtain high-purity aluminum alkoxide. The invention provides a method, which has a completely different idea, and utilizes chemical means to solve defects in the existing recycling of aluminum alloy scrap products.

The invention relates to a preparation method of foam particles. The preparation method of the foam particles comprises the following steps: S1, a microwave sensitizer is embedded into an expandable base material in a mass ratio of the microwave sensitizer to expandable base material being 0.01-2:92.5-98, and preprocessed particles are obtained; S2, the preprocessed particles obtained in the step 1 are mixed with a foaming agent and a foaming penetration enhancer, the mixture is placed in a closed container and left to stand to enable the foaming agent to penetrate the preprocessed particles sufficiently, and a foamed pre-expanded body is obtained; S3, the foamed pre-expanded body obtained in the step 2 is subjected to microwave heating and subjected to surface cooling anti-sticking processing, foaming is performed, and the foam particles are obtained. The method can be applied to foaming of various polymer elastomers, the process is simple, and requirements for conditions are low. Various thermoplastic polyurethane foam particles prepared with the method have excellent performance.

The invention discloses a preparation method of a reconstituted bamboo board and reconstituted bamboo prepared through the method. After bamboo wood is disposed in inorganic adhesives for impregnation, assembly and pressing treatment are carried out successively, the reconstituted bamboo is obtained, and the inorganic adhesives are formed by mixing geopolymers, stimulation solutions and modifiersin sequence. The geopolymers are used as the novel inorganic adhesives of the reconstituted bamboo prepared by adopting the method and play the effects of adhesives, fire-proofing agents and water-proofing agents, composite modifiers are added, and meanwhile the combination of the reinforcing and toughening of a matrix and the capacity expansion of bamboo wood glue joint interfaces is realized. The reconstituted bamboo has excellent mechanical properties, excellent water resistance, fire resistance and durability, has remarkable production, energy conservation and emission reduction effects, and is green and environment friendly. The technology is beneficial for efficient utilization of the bamboo wood and kaolin resources.

The invention relates to MDQ phenyl vinyl silicone resin. The MDQ phenyl vinyl silicone resin has the structure shown in the following general formula: (Ph2SiO)a(ViMe2SiO0.5)b(Me3SiO0.5)c(SiO2)d, wherein Ph is phenyl, Me is methyl and Vi is vinyl; the a value ranges from 0.1 to 1, the (b+c) value ranges from 0 to 0.1, and b is larger than 0; the d value ranges from 0 to 0.8, and the sum of a, b, c and d is larger than 0; the value of (a/d) ranges from 1.6 to 2.5; and the value of [(b+c)/d] ranges from 1.6 to 2.5. The invention further provides a preparation method of the MDQ phenyl vinyl silicone resin. According to the method, the viscosity, the refractive index and the vinyl content of a product are controlled through conditions of monomer raw material ratio, the reaction time, temperature and pH value and the like, the manufacturing conditions are mild, simple and feasible, the raw material source is wide, and the repeatability is good.

The invention provides a burley tobacco extract applied to a heated-non-combustible cigarette and an application of the burley tobacco extract. With a composite biological material of burley tobacco stems and bagasse as an immobilized carrier, biological preparations, including a microbial aroma-producing strain and enzyme, are adsorbed; burley tobacco powder is incubated, hydrolyzed and fermented; and in combination with a continuous counter-current ultrasonic solvent extracting technology, the burley tobacco extract is prepared, and the burley tobacco extract can be combined with propylene glycol; intrinsic intense fragrance of natural tobacco is reserved; characteristic smell of burley tobacco is relieved and irritation is reduced; the burley tobacco has natural composite fragrance of fresh fruity aroma, smell of caramel, smell of being roasted and the like; the preparation method of gentle in process conditions, high in extracting rate and high in production efficiency; the burleytobacco extract is applied to a novel heated-non-combustible cigarette material; the burley tobacco extract is coordinate with cigarette fragrance and uniform in style, and the burley tobacco extractcan increase smoke concentration, enhance feeling of being satisfied and enrich cigarette aroma; and irritant smell of burley tobacco is obviously reduced, and taste is improved.

The invention provides a system for continuously producing diethyl methylphosphite. The system comprises a rapid mixing reactor and a material circulation subsystem; a rapid mixing component is arranged at the inlet of the rapid mixing reactor and comprises a first liquid inlet and a second liquid inlet; the second liquid inlet is used for feeding a material containing methylphosphonous dichloride; the material circulation subsystem comprises a filter, a material distribution unit, an acid-binding agent premixer and a heat exchanger which are connected in sequence; the filter is also providedwith a solid waste outlet; the material distribution unit is also provided with a diethyl methylphosphite outlet; the acid-binding agent premixer is also provided with a reaction raw material inlet and an acid-binding agent inlet; and the inlet of the filter is connected with the outlet of the rapid mixing reactor, and the outlet of the heat exchanger is connected with the first liquid inlet. A method for continuously producing diethyl methylphosphite by adopting the system can realize large-scale continuous production of diethyl methylphosphite, and has the advantages of high product yield, stable production and high production benefit.

The invention relates to a preparation method of high-selectivity methyl isobutyl alcohol, which has the advantages of mild process conditions, high product selectivity and high raw material conversion rate. The reaction is carried out in a gas-solid phase fixed reactor, the raw material methyl isobutyl ketone is gasified, and then the gasified raw material methyl isobutyl ketone and hydrogen are subjected to hydrogenation reaction under the action of a catalyst to prepare the methyl isobutyl alcohol. Compared with the prior art, the method has the characteristics of mild process conditions, high product selectivity and high conversion rate of raw materials, the conversion rate of the methyl isobutyl ketone is greater than 99.50%, and the product selectivity of the methyl isobutyl alcohol is greater than 99.7%.

The invention discloses a self-cleaning hydrotalcite/fiber fabric composite material with wear resistance and self-repairing functions and a preparation method thereof. The method adopts an in-situ growth process and comprises the following steps of firstly, cleaning different types of fabrics such as cotton fabrics and polyester in a mixed solution of ethanol and water, and performing drying for later use; secondly, preparing different hydrotalcite precursor solutions, performing uniform stirring, and adding a uniformly stirred solution into a reaction kettle; thirdly, soaking different types of fabrics into the solution, carrying out a hydrothermal reaction after a certain time, and growing different types of hydrotalcites on the surfaces of the fabrics in situ; and finally, soaking the fabrics in an ethanol solution of stearic acid for modification to obtain wear-resistant self-repairing and self-cleaning hydrotalcite fabrics. Different types of hydrotalcites can uniformly grow on the surface of a fiber bundle to form a porous micro-nano structure, the obtained fabrics have excellent self-cleaning performance, the contact angle is 155 degrees or above, and the rolling angle is smaller than 5 degrees.

The invention discloses health-care foot moxa tea, and belongs to the technical field of health-care products. The health-care foot moxa tea is characterized by being prepared from the following raw materials in parts by weight: 95-100 parts of tea leaves, 86-92 parts of wormwood, 13-18 parts of notopterygium roots, 13-18 parts of radix angelicae pubescentis, 9-14 parts of YUNFENG, 13-18 parts of radix angelicae, 7-12 parts of asarum, 13-18 parts of rhizoma atractylodis, 18-24 parts of fructus kochiae, 13-18 parts of radix sophorae flavescentis, 18-24 parts of fructus cnidii, 4-8 parts of pericarpium zanthoxyli, 20-30 parts of mirabilite, 7-12 parts of borneol and 46-52 parts of honeysuckle flowers. The production process for producing the foot folium artemisiae argyi tea is mild in condition, tissue damage to the folium artemisiae argyi and the tea leaves is small, nutritional effective components of the folium artemisiae argyi and the tea leaves are greatly preserved, meanwhile, medicinal components in traditional Chinese medicines are released to the maximum extent through three times of decoction, and the folium artemisiae argyi and the tea leaves are wrapped after decoction liquid is mixed and concentrated, so that the effective active ingredients of the wormwood, the tea leaves and the traditional Chinese medicines are fully combined together, and a scientific method is combined with the traditional Chinese medicine theory, so that the wormwood tea is fragrant and sweet in mouth feel and wide in mouth feel application range, and is a good health-care and health-preserving product suitable for consumers in modern society.

The invention relates to a preparation method of brominated perfluoroalkane, and belongs to the technical field of fluorine-containing fine chemical production. Perfluoroalkyl iodide and bromine are used as raw materials, a photochemical reaction is performed under a normal pressure condition to synthesize a target product, then a reaction mixture is treated with alkali liquor, and finally, rectification and purification are performed to obtain the target product. The method has the advantages of mild preparation process conditions, simple equipment, high key raw material conversion rate, hightarget product selectivity, and easy realization of industrial continuous production.

The invention belongs to the technical field of biochemical engineering and particularly discloses a method for synthesizing sclareolide under catalysis of immobilized epoxidase. According to the method, sclareol is taken as a starting material. The method is characterized in that sclareol, immobilized epoxidase, a hydrogen peroxide solution and dichloroethane are added to a beaker and react under the conditions that the pH value is 2 and the temperature is 50 DEG C, epoxidized sclareol is obtained, oxidative degradation is continuously performed under the action of hydrogen peroxide, hydroxy acid is obtained, methylbenzene is added, the mixture is heated for reflux, and sclareolide is obtained. The method has the advantages that the production technological conditions are mild, the steps are simple, the method is environment-friendly, the economic benefits are high and the like, the reaction time is greatly shortened, the reaction temperature is reduced, and the production cost is saved.