64results about How to "Relatively small molecular mass" patented technology

The invention discloses a bioabsorbable polyphosphoester amino acid copolymer material, which is formed by preparing caprolactam, alpha-amino acid and phosphate, wherein caprolactam and alpha-amino acid are firstly polymerized to form a polybasic amino acid amide structural polymer; the polybasic amino acid amide structural polymer and phosphate are formed to be polyphosphoester amino acid copolymer. The polyphosphoester amino acid copolymer has good hydrophilia and degradation property, excellent physical performance, and can reduce the pH value of the product to 6.5-7.5 without stimulus response; the effect of internal repair is good, and the clinical application prospect is good.

The invention discloses a wood adhesive prepared by degrading soybean protein by utilizing strong basicity and a preparation method thereof, and relates to a soybean protein-based wood adhesive and a preparation method thereof. The invention solves the problems of low content of the soybean protein, high moisture content and large viscosity existing in conventional soybean adhesives or soybean protein adhesives. The product is prepared by performing a degradation reaction of defatted soybean protein powder or soybean protein isolate, strong base and water, then using strong phosphoric acid toadjust the pH value of the obtained solution, and then adding dialdehyde into the obtained solution to mix the solution evenly. The method comprises the steps of: 1, weighing; 2, preparing strong base solution, heating the strong base solution, adding the defatted soybean protein powder or the soybean protein isolate into the strong base solution under stirring, and then cooling the strong base solution to a room temperature after heating reflux; and 3, using the strong phosphoric acid to adjust the pH value, adding the dialdehyde into the solution, and stirring the solution evenly. The adhesive has the advantages of high content of the soybean protein, low moisture content and low viscosity, and can be used for preparing plywood, flakeboards and medium-density fiberboards.

The invention belongs to the field of biomedicine, and particularly relates to a novel polypeptide with a targeting effect on human ovarian cancer cells and application thereof. The amino acid sequence of the polypeptide is WNPLLLTRLLPA(SEQ ID No.1), and in the polypeptide molecule, through deletion, insertion or displacement of one or several amino acids, a polypeptide derivative with the same biological function as the polypeptide molecule is obtained. The polypeptide has the advantages of small molecular mass, high permeability, high specificity, low costs and the like, and shows unique advantages in tumor targeting diagnosis and treatment.

The invention provides hair washing, face cleaning and bathing three-in-one purification cream. The hair washing, face cleaning and bathing three-in-one purification cream comprises laureth disodium stearamido mea-sulfosuccinate, potassium cocoyl glycinate, cocamidopropyl betaine, cocamide MEA (monoethanolamine), polyethylene glycol-14M, hydrolyzed collagen, silk sericin, lycine salicylate, glycol distearate, PEG-150 (polyethylene glycol-150) distearate, allantoin, phenoxyethanol, DMDM (dimethylol dimethyl) hydantoin, bamboo charcoal, peppermint oil, menthol, glycerin, essence, sodium chloride, citric acid, EDTA (ethylene diamine tetraacetic acid) disodium and the balance water. The invention further provides a method for preparing the hair washing, face cleaning and bathing three-in-one purification cream. The hair washing, face cleaning and bathing three-in-one purification cream and the method have the advantages that the production cost can be reduced; fatty alcohol polyether alkyl sulfate is replaced by the laureth disodium stearamido mea-sulfosuccinate and the potassium cocoyl glycinate, and the cleaning power can be enhanced under the synergistic effect of the bamboo charcoal; amino acid surfactant mixed systems are extremely low in irritation, subcutaneous tissues can be effectively nourished by the hydrolyzed collagen and the silk sericin, and the hair washing, face cleaning and bathing three-in-one purification cream which is a product is safe and is convenient to carry.

The invention discloses a multi-component composite peptide solid beverage and a preparation method of the solid beverage, and relates to the technical field of solid beverage preparation. Aiming at the technical problems of few types and single function of the existing peptide beverage, the invention provides the multi-component composite peptide solid beverage which is prepared by carrying out multi-component compounding on bovine bone peptide, sea cucumber peptide and walnut peptide, and adding edible and medicinal Chinese herbal medicines such as chestnuts, wild jujubes, Chinese wolfberryfruits, etc. The multi-component composite peptide solid beverage prepared by the invention can increase bone strength, improve human body immunity, resist fatigue, tonify qi, nourish blood, benefit intelligence and strengthen brain. The solid beverage is simple and convenient to eat, and is a health-care solid beverage with high nutritional value.

The invention relates to the technical field of anticorrosive paint, in particular to high-temperature-curing inorganic anticorrosive coating for an automobile brake disc and a preparation method thereof. The inorganic anticorrosive coating comprises the following components in parts by mass: 40-45 parts of inorganic resin, 3-5 parts of modified zinc phosphate, 5-6 parts of composite ferrotitaniumpowder, 3-4 parts of a curing agent, 10-15 parts of water, 20-25 parts of talcum powder, 0.8-2 parts of dispersing agents, 0.5-0.8 part of a defoaming agent, 0.5-1 part of a neutralizing agent and 0.5-1 part of bentonite. According to the inorganic anticorrosive coating, on the premise that coating thickness is 30 microns, salt spray resistance time can reach 1000 hours, and adhesive force is good; different types of dispersing agents are selected, so the influence on the salt spray resistance of a paint film is very outstanding; a hydrophobic ammonium salt forms a good water-resistant film,and a sodium salt hydrophilic dispersing agent is low in relative molecular mass, so the water resistance and salt fog resistance of a coating film are reduced; and the polycarboxylate ammonium salt with a special structure and high relative molecular mass is selected as the dispersing agent, so the corrosion resistance of the coating is remarkably improved.

An ultrasonic plasticizing capillary rheometer comprises a frame, a rheological test unit, an ultrasonic vibration apparatus, and a tool head moving and loading unit. The ultrasonic vibration apparatus is provided with an ultrasonic tool head capable of extending into a plasticizing chamber along an axial direction, providing extrusion force for polymer in the plasticizing chamber, and providing ultrasonic wave energy required by the polymer for fusion from a solid state to a liquid state. In the ultrasonic plasticizing capillary rheometer, three steps including heating fusion, ultrasonic vibration for fluidity increase, and material extrusion are completed through the ultrasonic tool head and in the plasticizing chamber, thereby simplifying the conveying path. A heating ring providing the required initial temperature for the plasticizing process sleeves a material canister, provides a constant material canister temperature for the rheometer, and reduces the test error. A filter screen is arranged in the material canister, centralizes fused polymer, and improves the test accuracy. During a test process, a viscosity test method is accurate in heating, short in fusion time, and wide in application range, is slightly affected by the external environment, and can provide viscosity data high in accuracy.