69 results about "Water soluble chitin" patented technology

The invention provides a metal surface treatment agent composed of aqueous solution or aqueous emulsion containing ionic liquid. The metal surface treatment agent comprises the ionic liquid, silicate or silane coupling agent, water-soluble chitin or chitosan, corrosion inhibitor, stabilizer, pH modifier, wetter, coalescing agent, antioxidant, ethanol and water, the ionic liquid is room-temperature ionic liquid consisting of nitrogenous heterocyclic compound cations and inorganic or organic anions, one or more of nanoscale titanium dioxide, zirconium oxide or zirconium fluoride is uniformly mixed into the silicate or silane coupling agent by the weight equivalently accounting for 3%-25% of that of the silicate or silane coupling agent. A chemical conversion coating is formed on a metal surface by the metal surface treatment agent, can inhibit corrosion of the metal surface, and has a fine coating performance. The metal surface treatment agent is used for treating cold-rolled plates, galvanized plates and aluminum plates, and the metal surface treated by the metal surface treatment agent has the coating adhesion force equivalent to that of a metal surface treated by a phosphorus-containing metal surface treatment agent.

The invention relates to an alginate antibacterial dressing and its preparation method. The preparation method comprises the following steps of: preparing a spinning stock solution from soluble alginate, a water-soluble chitosan derivative or water-soluble chitin derivative and simultaneously adding a silver-based antibacterial agent into a coagulation bath, carrying out wet spinning to obtain a blend fiber product and further obtain the alginate antibacterial dressing, which can be used as a wound dressing, a hemostatic material and the like. The antibacterial dressing obtained in the invention has good biocompatibility, permeability and water absorption, can be used to rapidly stop bleeding, ease pain and promote wound healing, continuously acts on regenerative bacteria, and has a lasting and high-efficient sterilizing characteristic.

The invention discloses an unpolluted, green and high-efficiency composite biological soil modifier which comprises the following components: trichoderma pseudokoningii fermentation liquor, bacillus subtilis fermentation liquor, water-soluble chitin, potassium humate and decomposed organic matter. The trichoderma pseudokoningii and the bacillus subtilis are high-efficiency bacterial strains which are obtained through screening and mutating, the trichoderma pseudokoningii fermentation liquor and the bacillus subtilis fermentation liquor are obtained by a liquor submerged fermentation technology, and the unpolluted, green and high-efficiency composite biological soil modifier can be prepared in a combination way. The soil modifier has the following functions that the physicochemical property of the soil can be improved, the hardening of the soil can be broken up, the volume weight of the soil can be reduced, the air permeability of the soil can be improved, the microbiological activity of the soil can be promoted, the growth of the plant root system can be promoted, the disease resistance of the crop can be enhanced, the yield of the crop can be improved, the quality of the crop can be improved, the original ecology of the crop can be recovered and the like, and the soil modifier is the novel soil modifier which is high-efficiency, environment-friendly and convenient to use.

A chitin nonwoven cloth is prepared by mixing 10-100 weight share of water soluble chitin fibre with 0-90 weight share of basic fibre. Its preparing process includes opening, feeding, flowing, lapping, needle punching, winding and packing. The prepared nonwoven cloth can be used to produce sanitary napkins, face cleaning film, etc.

The invention discloses a dressing for medical use, a preparation method and an application thereof. The dressing comprises one or more of chitin derivative, chitosan derivative or water soluble chitin 1-100 wt%, water 0-99 wt%, and filler 0-60 wt%. The preparation method comprises respectively dissolving one or more of the chitin derivative, chitosan derivative or water soluble chitin into water to obtain 0.5-10 wt% aqueous solution, mixing intensively, adding 0-15 wt% filler, mixing intensively, vacuum de-bubbling to obtain hydrocolloid dressing, and subsequently obtaining filmy dressing, spongeous dressing or non-woven fabric dressing. The preparation method has simple process, and can be used for restoring skin wound such as operative incision in clinic, skin graft region, burn, scald, ulcer or bedsore.

This invention discloses a stable water soluble shell polysaccharide derivant fluorescence quanta point and its preparation method. The template is the shell polysaccharide derivant, its production method is home position grown in molecular grid form nm micro-crystal, particle diameter is between 2-6nm. The preparation method is that the derivant is dissolved in pure water, metal salt solution is added under agitation condition at house temperature to form complex, chalcogen predecessor solution is high speed agitated added the formed nm semiconductor micro-crystal, it is quanta point, finally high fluorescence efficiency quanta point solution is got after heat reflow and dialysis. The fluorescence point made in neutral water solution can effectively avoid poisonous side effect of organic solvent, the energy needed is large less than ordinary method, and it is specially to combination of bio-molecular. It has great application prospect in cell recognition, organism mark and disease diagnosis fields.

The invention discloses gynecological chitosan gel. The gynecological chitosan gel comprises the following components: 0.5-10 percent of water-soluble chitin derivative, 0.01-0.5 percent of guanidine bacteriostatic agent, 0.5-10 percent of lubricating agent, 0.05-0.5 percent of thickening agent and the balance of water. The preparation method of the gynecological chitosan gel comprises the following steps: (1) preparing the thickening agent into gel; (2) preparing the water-soluble chitin derivative, the guanidine bacteriostatic agent and the lubricating agent into a mixed solution; (3) mixing and stirring the solution prepared in the steps (1) and (2); (4) filling and sterilizing. The process is simple, the needed equipment is simple and readily available, and the gynecological chitosan gel has a good curative effect on gynecological diseases such as vaginitis and cervical erosion.

The invention relates to an ecological nitrogen fertilizer and a preparation method thereof, solving the problem of lower utilization rate of urea. In the invention, a multi-element integrating technology is adopted, chitin is used as a wrapping agent due to the film-forming property and excellent stickiness, organic matter containing humic acid is used as an urea adsorbent, medium trace elements are used as a balance agent of plant nutrient elements, and a root-promoting agent capable of promoting the root growth of plants is added to generate the multi-element multifunctional ecological nitrogen fertilizer by using the urea as a main raw material. The ecological nitrogen fertilizer is characterized in that the water-soluble chitin is used as the wrapping agent, and the medium trace fertilizer wrapped small granular urea and substances rich in the humic acid, such as weathered coal, grass carbon, and the like are mixed; and the raw materials has the following mixture ratio: 550 to 750 of urea, 200 to 400 of grass carbon (containing 30 percent of water), 80 to 200 of additive, 30 to 90 percent of medium trace fertilizer, 1 to 5 of chitin and 0.5 to 0.20 of root-promoting agent.

The invention discloses a hydrogel dressing, comprising water-soluble polymer, water-soluble chitin derivatives and solvent. The invention also discloses the method for preparing the hydrogel dressing, which is as follow: firstly, irradiation, secondly, circulation of freezing and unfreezing. The hydrogel dressing has the advantages of high transparency, large swelling capacity, high strength, low water evaporation rate, functions of antibacterial, anti-inflaminatory, hemostasis and promoting wound healing, no additive, and ability of providing a good healing environment for wound. The preparation method has the advantages of simple method, less time consumption, high efficiency, and ability of preparing the hydrogel dressing with high transparency, large swelling capacity and high strength.

The present invention discloses a blend fiber of sodium alginate/ water-soluble chitin and its usage and preparation. The blend fiber of sodium alginate/ water-soluble chitin is made as following ways: Mix the solution of sodium alginate which quality percentage is 3 - 5% and the solution of water-soluble chitin which quality percentage is 3 - 5%. The gelatin contains 10 - 70% of the production (blend fiber), and then percolate it and deaerating it in low pressture. Prepare blend fiber of sodium alginate/ water-soluble chitin in coagulation fluid by means of spinning. The stretches ratio is 10 - 30%. The blend fiber has good capability of biological activity, good capability of mechanics and water-absorptivity. There are also abundant stuff and low-lying cost. It has good prospect in the domain of medicine, weave and so on, especially for chitosan nonwoven as dressing of wound.

The invention relates to a medical colloid dressing and application thereof, in particular to a medical colloid dressing with the effects of easing pain, promoting surface of burns and scalds healing and restraining bacteria and application thereof. The dressing mainly comprises water-soluble chitin and chlorhexidine.

The medical dressing consists of solid component and water, and features that the solid component contains quasi-cationic water soluble chitin derivative in 5-100 wt%. The production process of the medical dressing is to dissolve quasi-cationic water soluble chitin derivative in pure water to form water solution. Owing to that the quasi-cationic water soluble chitin derivative is water soluble, water maintainable, antibiotic, biocompatible and biodegradable and can promote heal of wound, it is easy to change without adhesion, less likely to form scar, high in antiseptic and antiphlogistic effect and high in promoting heal. The medical dressing has obvious curative effect on cut, burn and scald wound, traumatic wound, external ulcer surface, etc.

The invention relates to a green and efficient biological organic soil improvement agent, in particular to a novel composite biological soil improvement agent. The novel multifunctional composite biological soil improvement agent is characterized by being prepared by uniformly mixing the following raw materials in parts by weight: 20-40 parts of rhizopus stolonifer fermentation liquid, 20-40 parts of trichoderma viride fermentation liquid, 1.5-2.5 parts of water-soluble chitin and 1.5-4.5 parts of potassium fulvic. The soil improvement agent mainly has the functions that the photosynthesis capacity of plants can be enhanced, and the directional transportation of photosynthetic products is facilitated; the root growth is promoted, and the yield is increased by 20% to 30%; the fruits are attractive, the color is bright, and the content of sugar and vitamins is increased; the soil pH value is increased; acidified soil, hardened soil and salinity soil are improved; the soil nutrient is activated, and the soil fertility is released.

The present invention discloses a chitosan gynecological gel, which comprises, by weight, 0.5-10% of a water-soluble chitin derivative, 0.01-0.5% of a guanidine antibacterial agent, 0.5-10% of a lubricating agent, 0.05-5% of a thickening agent, and the balance of purified water. According to the present invention, the chitosan gynecological gel does not require addition of the acidifying agent so as to simplify the process step, the guanidine antibacterial agent is added and the synergetic effect of the guanidine antibacterial agent and the water-soluble chitin derivative is adopted so as to achieve the long acting antibacterial effect, the treatment effect is good, no harm is produced on the body, and the body can not produce drug resistance during the use process.

The invention discloses a metal surface treating agent. The metal surface treating agent comprises the following components: vinyl trimethoxy silane, laurinol, 2,2,4-Trimethyl-1,3-pentanediol monoisobutyrate, hydroquinone, ethanol, water, gamma-allyl glycidyl ether trimethoxy silane, benzotriazole, 4,4-methylene (2,6-di-tert-butylphenol), tallow amine, octyl amine, decyl alkyl amine, triethylamine, 8-hydroxyquinoline, hexyl amine, diamylamine, water-soluble chitin, nonox, didodecylamine, dioctadecylamine, triethanolamine, dodecylamine, hexadecylamine, octadecylamine, resorcinol, pyrocatechol, catechol, 2,6-di-tert-butyl-alpha-dimethylamino hydroquinone, fatty alcohol-polyoxyethylene ether, alkylphenol ethoxylates, polyoxyethylene stearates, and sodium bicarbonate. The metal surface treating agent obviously improves the adhesive force on the metal surface and realizes the corrosion resistance during coating of the whole metal.

The invention discloses a crop yield improvement biological agent which is characterized by being prepared from the following raw materials by weight: 7-12 parts of dry ostrich dung, 3-6 parts of turmeric, 2-4 parts of plantago seed, 3-6 parts of immature bitter orange, 3-7 parts of soybean meal, 3-5 parts of ammonium sulfate, 5-8 parts of calcium chloride and 2-4 parts of water soluble chitin. The crop yield improvement biological agent can be used for soil modification, soil activation, effective degradation of soil pollution, and assistant improvement of crops growth.

Disclosed is an antibacterial healing promoting material for oral cavities. The antibacterial healing promoting material is characterized by comprising a water-soluble chitin/chitosan derivative, metal ions and antibacterial peptide and iodine (I2) with antibacterial effects; the antibacterial healing promoting material for the oral cavities can be powdery or spongy or colloidal or can be in the shape of a membrane; the water-soluble chitin/chitosan derivative is a derivative of hydroxypropyl chitin/chitosan, hydroxyethyl chitin/chitosan, carboxymethyl chitin/chitosan, carboxyethyl chitin/chitosan and succinyl chitin/chitosan or can be a mixture of two derivatives of the hydroxypropyl chitin/chitosan, the hydroxyethyl chitin/chitosan, the carboxymethyl chitin/chitosan, the carboxyethyl chitin/chitosan and the succinyl chitin/chitosan; the metal ions are a type of water-soluble zinc salt/calcium salt/aluminum salt/iron salt or mixtures of optional two types of the water-soluble zinc salt/calcium salt/aluminum salt/iron salt. The antibacterial healing promoting material has the advantages that good antibacterial and wounded tissue repair promoting effects can be realized, drug resistance can be prevented when the antibacterial healing promoting material is used for preventing and treating periodontal diseases and oral ulcer, and imbalance of normal flora in the oral cavities can be prevented; the antibacterial healing promoting material is obviously superior as compared with the traditional drug, is a novel material superior to existing treatment modes and has high application and development value.

The invention discloses a shape memory high polymer material with eucommia ulmoides rubber and a preparation method of the shape memory high polymer material. The shape memory high polymer material comprises the following raw materials in parts by weight: 100 parts of eucommia ulmoides rubber, 10-30 parts of a functional filler, 0.5-3 parts of a vulcanizing agent and 0-5 parts of a processing aid,wherein the eucommia ulmoides rubber is carboxyl modified eucommia ulmoides rubber; and the functional filler is one or more of microcrystalline cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, starch, water-soluble chitin and gelatin. The invention further discloses the preparation method of the high polymer material. Through a hydroxyl reaction of functionalcarboxyl on the carboxyl modified eucommia ulmoides rubber with the surface of the functional filler, not only is a thermotropic shape memory property of a conventional base material retained, but also the high polymer material has a function of responding to water stimulation, the high polymer material has a property of synergetic response to dual stimulation of water and heat, mechanical properties can be improved, and the application range can be widened.

The invention discloses a soluble chitose pH probe and preparation method used as the acidic organelle detection. The probe is made by amination and the soluble chitose is connected with the 9-anthracene aldehyde, so the substituted degree of the pH probe is 0.2%-1.8%. The method is to solve the chitose into the distilled water and add the 9-anthracene aldehyde under room temperature then the reductant; after removing the impurity by dialysis and extraction, the mixture is freeze dried to get the probe. The new fluorescent quanta point can avoid the toxic of the organic solvent, so the probe has the widely applied future in cell identification, biological marking and the illness diagnose.

The invention discloses a novel wound self-healing biological material, a preparation method and application thereof, and relates to the technical field of biological materials. The wound self-healing biological material comprises a solid component and a liquid component, wherein the solid component comprises a cationic water-soluble chitin derivative which is a chitin derivative soluble in purified water, and accounts for 0.1 to 100 weight percent of the total weight of solid component. The novel wound self-healing biological material has the advantages that the structure and performance of a molecular scaffold of the cationic water-soluble chitin derivative is close to those of skin and mucosal intercellular matrix mucopolysaccharide (such as hyaluronic acid), and is an excellent matrix material for the growth of skin and mucosal cells, and the self-healing of human skin and mucosal injury is promoted effectively by the antibiotic property of cationic macromolecules.

The invention relates to a leaf-vegetable immunizing agent and an application thereof, which belongs to the field of crop production. Aiming to solve the technical problems, the invention provides a leaf-vegetable immunizing agent and an application thereof. The leaf-vegetable immunizing agent provided by the invention comprises the following active components in parts by weight: 1-6.4 parts of chitosan and derivatives thereof, 0.4-4 parts of nitrogen, 0.3-1.0 part of phosphoric acid and 0.8-5.0 parts of potassium chloride, wherein the chitosan and the derivatives thereof are water-soluble chitosan and derivatives thereof; nitrogen is nitrogen elements and components which do not react with the water-soluble chitosan and the derivatives thereof for generation of a precipitate, and the mass of nitrogen is based on nitrogen elements. The invention also relates to an application of the leaf-vegetable immunizing agent. The components of the leaf-vegetable immunizing agent are harmless to human body and environments, and the leaf-vegetable immunizing agent does not cause hormone residues, is low in production cost, and meanwhile has the advantages of good effects on improvement of crop immunity and the like.

The invention discloses an antibacterial protective pad, comprising a surface layer; the surface layer is sprayed with an antibacterial agent, and the antibacterial agent is prepared from the following raw materials: water-soluble chitin, honeysuckle flower essential oil, wormwood essential oil, glycerin, ascorbic acid, alanine, glycine, a surface active agent, plant antibacterial agents and water. After the antibacterial agent containing the chitin is sprayed onto a surface layer material of the antibacterial protective pad, the antibacterial protective pad has an inhibiting effect for multiple bacteria and fungi, and has the advantages of being efficient in antibacterial function, breathable and comfortable, and good in heat dissipation; the chitin can stimulate the nerve type dilation of capillaries so as to improve microcirculation; furthermore, the antibacterial protective pad has no stimulation to skin and protects the health of women.

The invention discloses a flame-retardant antibacterial fabric and preparation method thereof, and belongs to the technical field of textile material production. The preparation method comprises the following steps that a regenerated cellulose fiber solution is mixed with a phosphorus-nitrogen composite flame retardant, and wet spinning is carried out to obtain flame-retardant fibers; the phosphorus-nitrogen composite flame retardant is prepared from the following components in parts by weight: 40-60 parts of triphenyl phosphate, 20-30 parts of ammonium polyphosphate, 26-28 parts of melamine cyanurate and 2-3 parts of zinc borate; the regenerated cellulose fiber solution is mixed with an antibacterial agent, and wet spinning is carried out to obtain antibacterial fibers; the antibacterialagent is prepared from the following components in parts by weight: 18-24 parts of water-soluble chitin, 22-28 parts of citric acid, 8-12 parts of juniperus chinensis oil and 30-40 parts of deionizedwater; the flame-retardant fibers and the antibacterial fibers are drawn according to the weight ratio of 1-2: 1, and roving, spinning and two-for-one twisting are sequentially performed to obtain flame-retardant antibacterial yarns; and the flame-retardant antibacterial yarns are blended with cotton fibers to obtain the flame-retardant antibacterial fabric. The flame-retardant antibacterial fabric is excellent in flame-retardant antibacterial performance, good in washability and high in safety and comfort level.