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209results about How to "High product yield" patented technology

Method for extracting soybean dietary fibre and soybean protein from soybean residue

ActiveCN101627813AShort extraction cycleHigh product yieldProtein composition from vegetable seedsVegetable proteins working-upSide productUltrasonic assisted
The invention relates to a method for extracting soybean dietary fibre and soybean protein from soybean residue, solving the problem of comprehensive use of the side product of soybean residue in soybean. The method comprises the following steps: drying, crashing and sieving fresh soybean to obtain soybean powder, adding extracting solution containing cellulase into the soybean powder for synchronous ultrasound extraction to obtain extracting solution; centrifuging the extracting solution to obtain supernatant A and sediment B; depositing, drying and crashing the supernatant A to obtain soluble dietary fibre; dissolving the sediment B by weak base to obtain supernatant C and sediment D; depositing, drying and crashing the supernatant C by food acid to obtain soybean protein; washing, decolouring, drying and crashing the sediment D to obtain insoluble dietary fibre. The invention utilizes ultrasonic and enzymolysis synergy food acid to obtain soybean soluble dietary fibre, soybean insoluble dietary fibre and soybean protein, and has the advantages of short extraction time, high product yield, simple technical process, easy operation control and convenience for large-scale industrial production.
Owner:黄山佳龙绿色食品有限公司

Polyformaldehyde dimethyl ether synthesis method

ActiveCN103664549AReduce manufacturing costHigh product yieldOrganic chemistryOrganic compound preparationPolyoxymethylene dimethyl ethersParaformaldehyde
The invention relates to a polyformaldehyde dimethyl ether synthesis method which mainly solves the problems of difficult catalyst separation, low raw material conversion rate and poor product selectivity in the prior art. The technical scheme of the polyformaldehyde dimethyl ether synthesis method comprises the following steps: by taking methanol, methylal and polyformaldehyde as raw materials, under the conditions that the reaction temperature is 70-200 DEG C and the reaction pressure is 0.2-6 MPa, enabling the raw materials to be in contact with a catalyst, and reacting to generate polyformaldehyde dimethyl ether, wherein the weight ratio of the methanol, the methylal and the polyformaldehyde is (0-10):(0-10):1, and the amounts of the methanol and the methylal can not be 0 at the same time; the amount of the catalyst accounts for 0.1-5.0% of the weight of the raw materials; and the used catalyst comprises the following components in parts by weight: a) 30-80 parts of carrier, which is at least one selected from SBA-15, MCM-41 or MCM-22 molecular sieve, and b) 20-70 parts of solid super-strong acid carried thereon, which is at least one selected from SO4<2->/ZrO2, SO4<2->/Fe2O3, Cl<->/TiO2 or Cl<->/Fe2O3. Thus, the problems are well solved; and the polyformaldehyde dimethyl ether synthesis method can be used for industrial production of polyformaldehyde dimethyl ether.
Owner:CHINA PETROLEUM & CHEM CORP +1

Method of synthetizing small molecule hydroxyl silicone oil through using continuation method

ActiveCN102558559AGood repeatabilityHigh product yieldSolventContinuation method
The invention relates to a method of synthetizing small molecule hydroxyl silicone oil through using a continuation method. The method comprises the steps as follows: adding the1,000 g of hexamethyl cyclotrisiloxane, 1,400 g of acetone and 120 g of water into a 3,000 ml four-mouth bottle with the stirring function, heating and keeping the temperature to 40 DEG C to 60 DEG C, melting and mixing uniformly; adopting a peristaltic pump to continuously pass through two fixed beds added with 100 g of strongly acidic styrene cation exchange resin, wherein the strongly acidic styrene cation exchange resin comprises a macroporous type and a gel type, and has the following grades: 732, D001, KY-2 and KY-23; obtaining a small molecule hydroxyl silicone oil crude product after the each fixed bed reaction temperature is 40 DEG C to 60 DEG C and the retention time is controlled to 30-70 seconds; and obtaining small molecule hydroxyl silicone oil after the crude product is subject to normal pressure desolvation, decompression and removal of low component. The method has the advantages of continuation production, high reproducibility and high product yield; and moreover, the product is colorless transparent liquid from the appearance, the viscosity is 15-30 mm2/s, and the hydroxyl content is in the range of 6-10%.
Owner:JIANGXI BLUESTAR XINGHUO SILICONE CO LTD

Preparation method of shape memory polyurethane based on lactide and 1, 4-p-dioxanone

InactiveCN101838385AHigh product yieldHigh response controllabilityDiaminePrepolymer
The invention discloses a preparation method of shape memory polyurethane based on lactide and 1, 4-p-dioxanone. The preparation method comprises the following steps of: firstly carrying out vacuum melting reaction on the 1, 4-p-dioxanone, stannous octoate and small molecule diol to generate hydroxyl-terminated polybutadiene (1, 4-p-dioxanone), carrying out vacuum melting reaction on the hydroxyl-terminated polybutadiene and the lactide as well as the stannous octoate to prepare the hydroxyl-terminated polybutadiene (lactide-co-1, 4-p-dioxanone), then reacting the hydroxyl-terminated polybutadiene with diisocyanate as well as the stannous octoate in a benzene solvent to generate prepolymer, and then reacting the prepolymer with an isopropyl alcohol solution of chain extender small molecule diol or small molecule diamine to prepare shape memory polyurethane. The invention adopts a tow-step method to prepare hydroxyl-terminated polybutadiene (lactide-co-1, 4-p-dioxanone), takes the benzene solvent as a pre-polymerization reaction solvent, introduces isopropanol as a cosolvent in the chain extension reaction, and can enhance reaction controllability, reduce by-product production, enhance product yield and obtain high molecular weight chain-shaped shape memory polyurethane with excellent shape memory performance.
Owner:CHONGQING UNIV

Preparation method of bisphenol monocarboxylic ester compound antioxidant

InactiveCN101792390ASimple production processHigh product yieldPreparation from carboxylic acid halidesSolventAntioxidant
The invention relates to a preparation method of a bisphenol monocarboxylic ester compound antioxidant product which mainly used for synthesizing high molecular materials of rubber, polyolefine plastics, engineering plastics and the like. The invention adopts bisphenol compound and fatty acyl chloride as raw materials, triethylamine as acid absorbent, and the aliphatic hydrocarbon as solvent to generate the bisphenol monocarboxylic ester compound antioxidant product by esterification reaction. Suitable process conditions for synthesizing the bisphenol monocarboxylic ester compound are as follows: the mol ratio of the bisphenol compound to the fatty acyl chloride is 1.1-1.3; the mol ratio of the bisphenol compound to the triethylamine is 1:1.3-1.5; the reaction temperature is 60-85 DEG C; and the reaction time is 120-240 minutes. The bisphenol monocarboxylic ester compound antioxidant product is obtained by filtering, separating, crystallizing and refining after the reaction. The invention has the characteristics of simple production process, high product yield, high quality and convenient industrialized production. The obtained white crystallized bisphenol monocarboxylic ester antioxidant product can be used for high molecular materials having high requirements for color.
Owner:JIANGSU POLYTECHNIC UNIVERSITY

Temperature-sensitive block copolymer and its hydrogel as well as application

The invention relates to a block copolymer and its hydrogel as well as application. The block copolymer of the invention is a temperature-sensitive block copolymer with a solution-gel transition characteristic. Specifically, the block copolymer of the invention is a BAB or ABA-type triblock copolymer composed of a poly(2-alkyl-2-oxazoline) (PAOz) block B and a polyester (PE) block A, or a copolymer containing the triblock copolymers. The aqueous solution of the block copolymer undergoes solution-gel phase transition along with temperature rise, and the phase transition temperature is 20-80DEG C. The block copolymer has good biocompatibility and biodegradability. The copolymer provided in the invention can provide a suitable drug delivery system for controlled release of stereotactic injection preparations and drugs, and also can provide a gel matrix and an effective means for enzyme immobilization, cell culture, tissue engineering, and vascular thrombosis, etc., as well as provides an appropriate material and technique for gelation of various aqueous solutions or aqueous humor systems in food, health care products and other fields. The method involved in the invention has the advantages of simple operation, high product yield, high purity, controllable property, and suitability for large-scale production application.
Owner:PEKING UNIV
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