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 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.

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 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.

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.