5 results about "Polyphosphate" patented technology

Compositions comprising a thermoplastic elastomer, e.g., a polyurethane, a nitrogen and/or phosphorus-based, intumescent flame retardant, e.g., a polyphosphate, a non-phosphorus-based burn synergist, e.g., carbon black or a metal oxide, and an optional olefin polymer, EVA are provided. Color-stable, halogen-free, flame retardant compositions comprising a thermoplastic elastomer polymer, a phosphorus-based flame retardant, at least 3 weight percent TiO2 and a UV stabilizer are also provided.

The invention discloses a method for preparing bioactive peptide from immobilized bi-enzyme of composite carrier magnetic nano-particles. The method includes the steps of (1) preparing Fe3O4 magnetic nano-particles, (2) preparing chitosan solution and sodium polyphosphate solution and mixing the two to obtain a composite carrier solution, adding in the Fe3O4 magnetic nano-particles with stirring, carrying out magnetic separation, washing with water and then drying to obtain composite carrier magnetic nano-particles, (3) preparing bi-enzyme solution of alkaline protease and trypsin, adding in the composite carrier magnetic nano-particles with stirring, then adding in glutaraldehyde aqueous solution dropwisely, carrying out a cross linking and adsorption method to obtain the immobilized bi-enzyme of the composite carrier magnetic nano-particles, and (4) preparing a plant-caused protein solution, adding in the immobilized bi-enzyme to obtain the bioactive peptide. The method has the advantages of environmental friendliness and low cost, completely takes full advantages of composite of two types of proteases, and improves yield and antioxidant activity of the bioactive peptide. The immobilized bi-enzyme of the composite carrier magnetic nano-particles is small in particle size and is of superparamagnetism.

The invention belongs to the technical field of plastic and discloses a shell plastic for computer display screens and a preparation method of the shell plastic. The shell plastic is prepared from, by weight, 35-40 parts of acrylonitrile-butadiene-styrene copolymer, 15-20 parts of polycarbonate, 8-10 parts of polyvinyl chloride, 6-8 parts of polytetrafluoroethylene, 3-5 parts of chlorinated polyethylene, 5-7 parts of silicon rubber, 3-5 parts of polybismaleimide, 5-8 parts of 2-hydroxy-4-octoxydiphenyl ketone, 4-6 parts of molybdenum disulfide, 8-12 parts of red phosphorus, 7-9 parts of melamine polyphosphate, 16-18 parts of calcium carbonate, 10-13 parts of magnesium hydroxide, 7-11 parts of a plasticizer, 2-4 parts of a lubricant, 1-2 parts of a stabilizer and 2-4 parts of an antistatic agent. The shell plastic is simple in preparation, excellent in physical performance and great in fire resistance and high temperature resistance.