1081results about How to "Hydrophilic" patented technology

The invention discloses a high oil absorbing resin, and a process for preparation comprises utilizing short-chain ester of (metyl group) acrylic acid, long-chain ester of acrylic acid and styrene monomer to be monomers, adding dispersing agent and surface active agent, and getting through suspension polymerization and random copolymerization under the condition of the existence of cross linker and initiating agent. The process for synthesizing has lithe time consumption, which can be industrialized, and high oil absorbing resin which is got has high oil absorbing efficiency, fast oil absorbing speed, and which can be recycled to be repeatedly used.

The invention discloses a method for dyeing and finishing pure-cotton high-count high-density fabric, which includes steps of singeing, cold dome, desizing and boiling-off, bleaching, mercerization, dyeing, moisture absorption and breath, no-iron sorting, tentering, pre-shrinking and packaging. The fabric dyed and finished by the present invention has advantages of high rebound, moisture absorption and breath, crease-resistance and soft feel.

The invention belongs to the medicinal preparation field, relates to a cell-penetrating peptide modified nanoparticle, and concretely relates to a nanoparticle delivery system for oral polypeptide and protein medicines, and its preparation method. The medicine delivery system is composed of the nanoparticle, cell-penetrating peptides modified on the surface of the nanoparticle, and the polypeptide protein medicines sealed by the nanoparticle, wherein the average particle size range of the medicine delivery system is 10-500nm. The cell-penetrating peptide modified nanoparticle and glucosaminoglycan having electronegative cell surfaces undergo electric property attraction and then undergo endocytosis, so the cell-penetrating peptide modified nanoparticle and the glucosaminoglycan are integrally taken into cells; and the cell-penetrating peptide modified nanoparticle has an alimentary canal mucous membrane penetrating capability after the cell-penetrating peptide modified nanoparticle is orally taken, and can deliver the polypeptide protein medicines carried by the cell-penetrating peptide modified nanoparticle to the whole body for blood circulation, so the oral biological utilization degree of the medicines are improved. The cell-penetrating peptide modified nanoparticle has the advantages of improvement of the stability of polypeptide and protein medicines in the alimentary canal, reduction of the application amount of cell-penetrating peptides, and reduction of possible toxic side effects caused by the cell-penetrating peptides.

The invention discloses a high-strength polysaccharide aerogel microsphere, and a preparation method of the high-strength polysaccharide aerogel microsphere, which are mainly used in the field of chromatographic separation. According to the preparation method, firstly a difunctional cross-linking agent is used to modify a polysaccharide material, then the polysaccharide material is mixed with a material not modified, and the mixture is emulsified into a sphere, and activated at the later stage to achieve crosslinking in the microsphere. The modified polysaccharide chain forms a covalent cross-linking bond in an aerogel fiber bundle and between the aerogel fiber bundles, so that the mechanical strength of the aerogel microsphere is greatly improved; the polysaccharide chain not modified contains a large quantity of hydroxide radicals so as to be good for the formation of a hydrogen bond in the gelation process and play a role of skeleton supporting, then a macropore network structure formed through aerogel solidification is kept, and the shrinkage and the deformation of the microsphere are effectively avoided. The aerogel microsphere not only has an excellent property of the natural polysaccharide, but also has a remarkable advantage on the skeleton rigidity and operation flow rate, and is therefore an ideal industrial chromatographic separation filler.

The invention discloses a method for transforming fatty acid ethyl ester into glyceride, which comprises the following steps of: mixing the fatty acid ethyl ester and glycerol in a material tank; making the material pass through a glycerol separator by using a pump to separate free glycerin; then putting the material in a reactor in which immobilized lipase is filled; and making the material passthrough a packed tower to remove ethanol; making the material finally flow back to the material tank for performing 6 to 300h circular reaction; then carrying out molecular distillation on the reaction product to remove the unconverted reactant so as to obtain glyceride products. The method can improve the stability and bioavailability of the products, and has high application value for transforming functional fatty acids such as ethyl ester fish oil, algae oil, conjugated linoleic acid, arachidonic acid and the like into glyceride products.

The invention discloses a water borne epoxy resin anticorrosive paint and preparation method thereof and solves the contradiction between storage stability of water dispersion and water resistance and corrosion resistance of dispersion film in the prior art. The paint is prepared by mixing oxosilane modified water borne epoxy resin dispersion, iron oxide red, rustproofing pigment, talc powder, defoaming agent, flatting agent, flash rust proofing agent and deionized water in ratio, and the invention is characterized in that: hydrophilic monomer is introduced to epoxy resin molecular chain, so the paint has self-emulsifying characteristic; and oxosilane is applied to modifying of the water borne epoxy resin, so that the paint can be heated and self-solidified. The paint has good storage stability and good construction performance, film can be fast dried and has high rigidity after being dried, the film is bright and smooth, water proof, corrosion resistant, washing resistant, good in comprehensive performance and low in cost. The invention can meet the requirement of anticorrosive paint in the fields of storage tank, bridge and the like.

A reparing material for reparing the coke oven by spraying the semi-dried it is prepared from the raw Al-Si material chosen from mullite, high-Al alumine, etc. high-Al cement or calcium aluminate cement, soft clay, kyanite, Al2O3 and/or SiO2 powder, and naphthalenesulfonic acid-formaldehyde condensate. Its advantages are high adhesion, strength, heat shock resistance and antiwear performance, and low cost.

The present invention relates to a thermal storage and insulation microcapsule for a building material and a preparation method thereof. An inner wall material employs toluene diisocyanate and polyethylene glycol as a polymerization monomer, which wraps a core material via interfacial polymerization; and an outer wall material employs toluene diisocyanate, diethylenetriamine, ethanediamine or piperazine as a polymerization monomer, which wraps an inner nuclear shell via interfacial polymerization. Capsule wall of the thermal storage and insulation microcapsule of the invention has advantages of thermosetting property, high mechanical strength, and improved abrasion resistance and durability.

The invention relates to the technical field of softening agents, in particular to a ternary polymerization block polyether amino silicon oil softening agent. The structural formula is shown in the description, wherein R=-CH2CH2CH2, -CH3 or -CH2CH3, R'=C1-22 alkane, PO=OC3H6, EO=OC2H4, a and b are any integer from 5 to 24, c is any integer from 10 to 60, and n is any integer from 10 to 60. Yellowing, instability and hydrophobicity of ordinary amino silicon oil are overcome, fabric has excellent hand feeling, hydrophilia, washability and stability, and the softening agent is suitable for various kinds of pure cotton fabric, cotton-polyester blended fabric, wool and other kinds of fabric.

The invention relates to a preparation method of a nanofiber separation composite membrane with a gluing transition layer. The method comprises the steps of: (1) preparing a gluing layer macromolecule solution; (2) immersing a nanofiber non-woven fabric into the gluing layer macromolecule solution for treatment, so that a gluing layer can form on the surface of the nanofiber non-woven fabric; (3) preparing a functional barrier layer on the gluing layer, and conducting a heat treatment or chemical treatment finally, thus obtaining the nanofiber separation composite membrane. Being simple and practicable, the preparation method provided in the invention has easily available raw materials and low cost. And the nanofiber separation composite membrane of the invention can be widely used in the fields of nanofiltration, reverse osmosis and the like.

The invention discloses a preparation method of a polylactic acid glycollic acid-polypeptide-polyethylene glycol diblock-grafted copolymer. The method comprises the following steps: 1, adding a polypeptide homopolymer, diisocyanate, a catalyst and a solvent to a dry reactor, reacting in an inert atmosphere under stirring at 50-55DEG C for 40-60min, and removing excess diisocyanate through a dialysis process to obtain a terminal -NCO group-containing polypeptide homopolymer; 2, adding the terminal -NCO group-containing polypeptide homopolymer, the catalyst and the solvent to the dry reactor, adding polylactic acid glycollic acid monolauryl ether, reacting in an inert atmosphere under stirring at 50-55DEG C for 50-70min to obtain a polylactic acid glycollic acid-polypeptide diblock copolymer; and 3, adding the polylactic acid glycollic acid-polypeptide diblock copolymer, a catalyst and the solvent to the dry reactor, adding polyethylene glycol monomethyl ether, and reacting in an inert atmosphere under stirring at 55-58DEG C for 2-4d to obtain the polylactic acid glycollic acid-polypeptide-polyethylene glycol diblock-grafted copolymer. The preparation method is simple.

The invention discloses a method for preparing a polypeptide-polylactic acid-polyethyleneglycol dual-graft copolymer. The method is characterized in that the molecular weight of a polypeptide chain segment in the copolymer is 20000-50000; the molecular weight of a polylactic acid chain segment is 1000-2000; and the molecular weight of a polyethylene glycol chain segment is 500-700. The preparation method comprises the following steps of: 1) synthesizing a polypeptide-polylactic acid graft copolymer, namely, adding a polypeptide homopolymer, polylactic acid lauryl ether, a solvent and a catalyst to a dry reactor, stirring and reacting for 3-4 days under an inert atmosphere at 55-58 DEG C, so as to prepare the target in manners of filtering, dialyzing and drying; and 2) synthesizing the polypeptide-polylactic acid-polyethyleneglycol dual-graft copolymer, namely adding the polypeptide-polylactic acid copolymer, the catalyst, the solvent and the methoxy polyethylene glycol to the dry reactor, stirring and reacting for 2-3 days under the inert atmosphere at 55-59 DEG C, so as to obtain the target in manners of filtering, dialyzing and drying. The method is simple in process; and the obtained target is a novel biodegradable material.

The invention relates to a preparation method of a block silicone oil softener. There are no preparation methods of block silicone oil softeners having the advantages of reliable performances, environmental protection and simple process at present. Raw materials used in the preparation method comprise, by weight, 25-35 parts of block silicone oil, 2.5-4.0 parts of isomeric fatty alcohol polyoxyethylene ether, 0.2-0.3 parts of acetate acid gracial and 60.7-72.3 parts of water. The preparation method comprises the following steps: adding the isomeric fatty alcohol polyoxyethylene ether and the block silicone oil to a reaction bottle, uniformly stirring, emulsifying for 5-10min, adding 15-20 parts of water to obtain a block silicone oil softener precursor, stirring for 10-20min, adding acetate acid gracial and residual water to the block silicone oil softener precursor, uniformly stirring, and filtering to obtain the block silicone oil softener having a pH value of 5-6. The preparation method has the advantages of simple process and easy preparation, and the prepared block silicone oil softener has the advantages of reliable performances and environmental protection.

The invention discloses a grapheme-containing aqueous antibacterial environment-friendly coating and a preparation method thereof, and belongs to the field of waterborne coatings. The graphene-containing aqueous antibacterial environment-friendly coating comprises the following components in parts by weight: 20 to 70 parts of aqueous film-forming substance, 3 to 20 parts of graphene-based antibacterial filler, 1 to 10 parts of photocatalyst. 2 to 10 parts of pigment, 0.2 to 2 parts of auxiliary agent, and 5 to 15 parts of curing agent. The preparation method comprises the steps of: preparationof the graphene-based antibacterial filler, pre-mixing, sand milling, diluting and packaging. The graphene-containing aqueous antibacterial environment-friendly coating disclosed by the invention hasgood stability, fast drying time, excellent adhesion performance, obvious antibacterial and bactericidal effects, zero VOC emission, environmental friendliness, non-toxicity and convenience for construction.

The invention relates to a chitosan nano fibrous membrane adsorbing material and a preparation method thereof. The preparation method for the chitosan nano fibrous membrane adsorbing material comprises the steps as follows: chitosan spinning liquid is added into electrostatic spinning equipment; a chitosan nano fibrous membrane is prepared by an electrostatic spinning method; and the obtained chitosan nano fibrous membrane is soaked into alkaline liquid, and then is cleaned and dried to obtain the chitosan nano fibrous membrane adsorbing material. The average diameter of the nano fiber for forming the adsorbing material is 10-600nm; and the porosity of the adsorbing material is 15-60 percent. The adsorbing material has the characteristics of biocompatibility, biodegradability, hydrophilicity, low cost, large adsorption capacity and broad material sources. The adsorbing material can effectively absorb heavy metal ions comprising Cu (II), Hg (II), Cd (II) and Pb (II).

The invention aims at providing a method for preparing a multi-drug multi-coating eluting intravascular stent through ultrasonic atomizing and spraying, wherein VEGF, SZ-21 and other protein drugs, taking chitosan as a drug carrier, form a first coating; the second layer is a shielding layer, which adopts a polymer poly L lactic acid (PLLA) and can be added with polyethylene glycol (PEG) in different proportions to control release speed of drug; the third layer is lipid soluble medicine, such as rapamycin, which uses PLLA as a drug carrier; and a coating at the top end of the fourth layer, same as the second layer, is a shielding layer. Two uniform drug polymer coatings can simultaneously load multiple drugs, and the release speed of the drug can be regulated and controlled by regulating a mixing proportion of the PEG and the polymer, so as to inhibit restenosis and to reduce formation of thrombus simultaneously.

The invention discloses several non-peripherial substituted phthalocyanine metal complexes and making method, which introduces functional group into position a (position 1(4), 8(11), 15(18) and 22(25)) of phthalocyanine complex.

The invention discloses a lycium ruthenicum beverage and a preparation method thereof and provides a beverage prepared by taking dried lycium ruthenicum fruit powder as a main raw material and a preparation method thereof. The lycium ruthenicum beverage is composed of following raw materials by weight percent: 0.1%-7% of the dried lycium ruthenicum fruit powder, 0.05%-3% of guar gum, 0.2%-7% of CMC-Na (Carboxyl Methyl Cellulose-Na), 0.05%-3% of xanthan gum, 3%-15% of erythritol, 0.006%-0.6% of stevioside, 0.01%-0.8% of citric acid, 0.01%-0.4% of sodium citrate, 0.01%-1.5% of tea polyphenol and the balance being water. The beverage is prepared by taking the dried lycium ruthenicum fruit powder as the main raw material; reasonable compatibility and synergistic effects of all the components are utilized and the color of a product is amaranth; the lycium ruthenicum beverage has a unique flavor, no astringent and mellow mouth feel, and has the effects of nourishing liver and kidney, replenishing vital essence to improve eyesight and nourishing blood, enhancing the immunity of people, beautifying, resisting oxidization, decaying aging, resisting fatigues, lowering blood pressure and lowering blood sugar.