128 results about "Sodium bisulphite" patented technology

The invention relates to a textile water-based pigment printing binding agent and a preparation method. The textile water-based pigment printing binding agent is prepared in a way that acrylonitrile, ethyl acrylate, butyl acrylate, crylic acid, hydroxyethyl methacrylate, acrylamide, sodium dodecyl sulfate, alcohol dodecyl polyoxyethylene (10) ether, deionized water, ammonium persulfate and sodiumhydrogen sulfite are subjected to emulsion polymerization and then are mixed with pyrolysis closed polyurethane crosslinking agent according to proportion. The product is cured in low temperature condition, has remarkable advantages in the aspects of dry rubbing fastness, wet rubbing fastness, soaping fastness and the like, is simple and easily-controllable in production operation, and is energy-saving and environment-friendly.

The invention discloses a rosin-based emulsifier and a preparation method and application thereof. The rosin-based emulsifier having the following structural formula is prepared by the steps of reaction between rosin and octanol, addition reaction with acrylic acid, condensation reaction with polyethylene glycol, esterification with maleic anhydride and conjugated reaction with sodium bisulfite. The rosin-based emulsifier prepared by the invention has little effect on the performance of a rosin ester emulsion, can emulsify rosin ester directly without remixing with other surfactants and the rosin ester emulsion prepared has the advantages of small particle size, stable storage and good performance.

The invention provides an electrostatic flocking adhesive for a high fastness carpet and a preparation method thereof. The raw materials comprise, by weight, 3.5-4.3 parts of a reactive anionic emulsifier, 25-27 parts of a reactive nonionic emulsifier, 3.9-4.1 parts of methacrylic acid polyether phosphate ester, 0.9-1.2 parts of itaconic acid, 4.9-5.1 parts of N-hydroxymethyl acrylamide, 0.9-1.2 parts of acrylamide, 1.5-2 parts of methacrylamide ethyl ethylene urea, 3.9-4.1 parts of methacrylic acid, 2.4-2.6 parts of hydroxyethyl methylacrylate, 3.9-4.1 parts of glycidyl methacrylate, 180-185 parts of n-butyl acrylate, 50-53 parts of acrylonitrile, 47-50 parts of methyl methacrylate, 1-1.1 parts of ammonium persulfate, 0.5-0.55 part of sodium bisulfite, and 258-272 parts of deionized water; a polymer emulsion formed by the seeded emulsion polymerization is supplemented with water solution containing 24-25 parts of ammonium polyphosphate and mixed to prepare the electrostatic flocking adhesive for high fastness carpet, wherein the adhesive has good wear resistance, moisture resistance and flame resistance.

The invention discloses a process for preparing retannage fatting agent by waste phosphatides, belonging to the leather chemical industry technology field. The process comprises firstly amidating waste phosphatides by utilizing diethanolamine, then esterifying through maleic acid, modifying esterification fat by using chloride salt, and finally sulfating fat by utilizing sodium acid sulfite, thereby preparing a novel fatting agent which has the functions of retannage and stuffing. The process can prepared leather fatting agent which is suitable to different models and requests and patterns through regulating proportions of each raw material component and has the characteristics of simple operation, simple device and low cost and the like. The retannage fatting agent of the invention has strong cohesion with leather fiber and excellent absorption property, which can make the leather which is filled fat much softer, compact, well developed, and the effect can be remained in long term.

The invention relates to a preparation method of cation-type waterborne polyurethane wool anti-felting emulsion, and belongs to the field of wool fabric finishing auxiliaries. According to the preparation method of the cation-type waterborne polyurethane wool anti-felting emulsion, polyisocyanate is used as a hard segment, polyether polyol is used as a soft segment, an amine compound is used as a cation chain extender and sodium hydrogen sulfite or methyl ethyl ketoxime is used as an end-capping reagent; the adopted technical route is pre-polymerization reaction-hydrophilic chain extending reaction-end capping reaction-neutralization reaction-self-emulsifying reaction. The anti-felting emulsion synthesized by a self-emulsifying method has the characteristics of being excellent in storage stability, adjustable in solid content and convenient to use, the size change of wool knitting fabrics caused by felting during washing is remarkably reduced, the bursting strength, dyeing depth and dyeing fastness of the wool knitting fabrics are improved, and good application prospect is provided.

The invention discloses a method for synthesizing chitosan cross-linked polymaleic anhydride super absorbent resin. The method is as follows: biodegradable N-maleoyl chitosan is used as a cross-linking agent, maleic anhydride (MA) and acrylic acid (AA) are used as raw materials, and ammonium persulfate and sodium bisulfite are used as initiating agents; an aqueous solution free radical polymerization reaction is performed to synthesize the biodegradable super absorbent resin; an orthogonal experiment method is used to optimize the synthesis conditions to obtain optimum synthesis conditions. The chitosan cross-linked polymaleic anhydride super absorbent resin prepared using the method provided by the invention is good in water absorption, swelling dynamic performance, water retention capability under natural conditions, repeated water absorption, pH sensitivity and biodegradability.

The invention relates to a method for producing a bacteria repellency high hydroscopicity resin, which belongs to a kind of functional polymer materials. The resin is produced by long chain quaternary ammonium salt cationic monomers with the structure of allyl group, acrylic anionic monomers neutralized partly by natrium hydroxydatum and acrylamide non-ionic monomers using the process of redox initiation system aqueous solution polymerization method. The oxidation agent is sodium peroxydisulfate or ammonium peroxodisulfate, reducing agent is sodium sulphite or sodium bisulphate, cross linking agent is N, N'-Methylenebisacrylamide and quaternary ammonium salt assisting solvent is aliphatic alcohol polyoxyethylene ether. The said high hydroscopicity resin has a good water-absorbing and water-holding capacity, high gel strength and chemical stability, and a particularly good bacteria repellency.

The invention discloses a leather mark-reaching producing method of hexavalent chromium, which comprises the following steps: placing the basket wet leather in barrate to wash; adding in water, degreasant, aminic acid liquor; discharging liquor; putting in water, modified glutaral, chromium powder, sodium thiosulphate; discharging liquor; adding in water, sodium acid sulfite, sodium thiosulphate, neutralization multiple tanning agent PAK-N apocenosis; discharging liquor; adding in water, synthetic tanning agent, acrylic resin tanning agent ART-1, bayberry extract, dye, sulfating modified adeps lanae fatting agent, synthetic fatting agent SES201, SCF synthetic fatting agent, DF recombination fatting agent, gallic acid, eldopaque and formaldehyde solution; discharging liquor; filling water; discharging liquor in the end. The invention prevents every nucleus of hexavalent chromium produced.

The invention relates to a supplementing culture medium for CHO cell culture and a CHO cell culture method. The supplementing culture medium comprises amino acids, vitamins, sodium hydroxide and waterfor injection. According to the total mass of the supplementing culture medium, the supplementing culture medium comprises, by mass, 4.8-19.75% of amino acids, 0.00925-0.13% of vitamins, 1.25-5.5% ofsodium hydroxide and the balance water for injection, wherein the amino acids include L-aspartic acid, L-tyrosine, L-threonine, L-tryptophan and L-glutamic acid, and the vitamins include riboflavin,folic acid, vitamin B12, biotin, menadione sodium bisulfite, thiamine hydrochloride and L-ascorbic acid. By means of the supplementing culture medium and the cell culture method, CHO cell growth can be optimized, and the capacity of cells of expressing target protein can be improved.

The invention discloses a matte involucra coating adhesive for textile and a preparation method thereof. The matte involucra coating adhesive for textile is prepared from the following components in parts by weight: 2-2.5 parts of fatty alcohol-polyoxyethylene ether, 1.5-2 parts of sodium dodecyl sulfate, 100-105 parts of ethyl acrylate, 25-30 parts of iso-octyl methacrylate, 1.5-2 parts of 2-hydroxyethyl methacrylate, 3.5-4 parts of N-hydroxymethyl acrylamide, 1.5-2 parts of triethylene glycol dimethacrylate, 30-34 parts of styrene, 4-4.5 parts of acrylic acid, 0.4-0.5 part of ammonium persulfate, 0.4-0.5 part of sodium hydrosulfite, 270-340 parts of deionized water and a proper amount of ammonia water with weight percentage concentration of 20-22% by the steps of synthesizing into emulsion by pre-emulsification and initiated polymerization, and then adding 7-12 parts of thickener, 0.2-1.0 part of wetting dispersant and 10-50 parts of delustering agent. The product has mild gloss, soft handfeel, strong involucra feel and excellent firmness.

The invention discloses a secondary amide di-quaternary ammonium salt type hydroxypropyl sodium sulfonate asphalt emulsifier and a preparation method thereof, wherein the secondary amide di-quaternary ammonium salt type hydroxypropyl sodium sulfonate asphalt emulsifier is prepared from the following raw materials N-hydrogenated tallow-1,3-propylene diamine, an alcohol solvent, N-hydroxymethyl acrylamide, epichlorohydrin and sodium bisulfite according to a molar ratio of 1:(5.00-11.00):(3.00-3.10):(2.00-2.30):(2.10-2.50), and the alcohol solvent is ethanol, methanol or isopropanol. According to the present invention, the preparation method has advantages of easily available raw material, low production cost, simple process and no requirement of high temperature reaction; and the obtained secondary amide di-quaternary ammonium salt type hydroxypropyl sodium sulfonate asphalt emulsifier can emulsify a variety of different types of asphalts, and can be used for preparing cationic emulsified asphalts, and the emulsified asphalt prepared from the secondary amide di-quaternary ammonium salt type hydroxypropyl sodium sulfonate asphalt emulsifier has advantages of fine and uniform property and good storage stability.

The present invention relates to the use of compositions that, when applied to citrus, are capable of controlling the psyllids Trioza erytreae and Diaphorina citri, vectors of bacteria of the genus Candidatus liberibacter, which cause the disease known as Huanglongbing (HLB), deemed to be the most destructive disease currently to affect citrus crops worldwide. These compositions may contain, without distinction, or jointly, as active components, vitamin K3, soluble derivatives thereof (preferably menadione sodium bisulphite [MSB]) or sparingly soluble derivatives thereof (preferably menadione nicotinamide bisulphite [MNB]), with respective concentrations of between 0.0001 and 200 ppm, 0.001 and 10 000 ppm, preferably vitamin K3 between 0.001 and 100 ppm, MSB between 0.01 and 5000 ppm, and MNB between 0.01 and 5000 ppm. Said compositions are applied preferably by spraying to the aerial part of the plant or via the irrigation system, and may be mixed with a variety of additives, such as organic and inorganic fertilizers, insecticides, nematocides, fungicides, bactericides, acaricides or herbicides.

This invention relates to a method of reducing the deleterious effects of water production in a subterranean formation by placing an aqueous phase polymer and/or resin, which at a designated set up time, solidifies and blocks water conduits. This invention pertains specifically to a method of conditioning well bores and placing the polymer and displacing the polymer and/or resin to establish post treatment gas and oil permeability. Novel polymers and/or resins for use as a water barrier are disclosed, typified by phenoformaldehyde containing 1-2 weight % of at least one of sodium bisulphite, sodium metabisulphite or mixtures thereof. The method includes selecting a well having sizable hydrocarbon reserves with a production history of decrease of oil or gas production with concurrent increase of water production.

The invention discloses a bleaching method for bleaching deinked waste pulp. The bleaching method has the advantage of avoiding the environment pollution caused by the conventional bleaching using sodium hydrosulfite and thiourea dioxide. The method is an environment friendly reducibility bleaching method which has great improvement on the whiteness of the waste pulp and low cost. The method can overcome the defect of a yellow color system lying in the conventional bleaching through the sodium hydrosulfite. In addition, sulphate used in the method can selectively be sodium bisulphite or sodium pyrosulfite so as to further improve the whiteness after the waste pulp is bleached and reduce the dosage of sodium borohydride. A chelating agent is at least one of sodium silicate, disodium edta or tetrasodium salt, and diethylene triamine pentacetic acid or sodium tripolyphosphate. Additives and the dosage of the additives can be adjusted according to the actual metallic ion content in the waste pulp so as to improve the bleaching efficiency and reduce the cost of the bleaching medicine for unit whiteness improvement.

The invention relates to an asymmetric succinic acid ester type Gemini surfactant and a preparation method thereof. The Gemini surfactant comprises two hydrophilic groups and two hydrophobic chains. Compared with a traditional single-head (hydrophilic group) and single-tail (hydrophobic group) surfactant, the performance is more excellent, and the surfactant is a novel efficient surfactant. Fatty monoethanol amide and lauryl alcohol succinate monoester are taken, and boric acid is added for performing a catalyst temperature raising reaction; cooling is performed, and sodium bisulfite is added for a reaction; chloroacetic acid is added for a reaction; the asymmetric succinic acid ester type Gemini surfactant is prepared through washing, filtering and drying. The asymmetric succinic acid ester type Gemini surfactant is based on natural fatty acid which is low in price and easy to obtain. The prepared surfactant has the excellent performance of a traditional Gemini surfactant and further has good market applicability because of the characteristics that the preparing process is simple, and raw materials are low in price.

The invention relates to a sagittaria sagittifolia beverage with an original taste and a processing method of the sagittaria sagittifolia beverage, and belongs to the technical field of food processing. The sagittaria sagittifolia beverage comprises the following components in percentage by weight: 6-9 parts of sagittaria sagittifolia, 0.01-0.05 part of sodium bisulfite, 0.005-0.05 part of liquefied alpha-amylase, 2-5 parts of white granulated sugar or xylitol, 0.03-0.05 part of sodium salt of carboxy methyl-cellulose, sodium alginate or agar, 0.01-0.05 part of fatty acid glyceride and 85-90 parts of purified water. The processing method comprises the working procedures of pretreatment of raw materials, pulping, filtration, enzymolysis, enzyme deactivation, blending, homogenization, degasification, filling and sealing, sterilization, inspection and like. The sagittaria sagittifolia beverage is strong in flavor, and has the natural and nutritional characteristics; besides, the production process is clean and environmentally friendly, the technology is simple, and industrialized production is easy to achieve.

The invention discloses a preparation process of a hot melt adhesive film for bonding a PP material, which comprises the following steps: mixing terpene resin, rosin ester, calcium stearate, a catalyst, a regulator, a surfactant and a nucleating agent at high temperature, adding sodium hydrogen sulfite to obtain a viscous matrix, then fully stirring and mixing the modified polypropylene, epoxy SBS, metallocene polyolefin, a grafting material, paraffin and an antioxidant for reaction, then performing high-temperature polymerization to obtain a hot melt adhesive raw material, carrying out high-temperature contact gasification operation on the hot melt adhesive raw material, and synchronously coating the hot melt adhesive raw material with a viscous matrix in the high-temperature contact gasification process to obtain a preformed intermediate raw material, spraying the preformed intermediate raw material onto a Teflon mesh belt in a gap spraying manner, cooling and forming to obtain a hotmelt adhesive film, performing separate reaction on a tackifying material and a copolymerization raw material of the hot melt adhesive film, and finally finishing copolymerization mixing of the tackifying material and the copolymerization raw material during high-temperature extrusion, so that a viscous matrix is positioned on the surface of the hot melt adhesive film, and the hot melt adhesive film is obtained. The viscosity with a PP material is effectively improved.

The invention discloses a preparation method of a compound amino acid injection for livestock, and belongs to the technical field of veterinary for livestock. The preparation method comprises the steps of boiling over water for injection, performing sterilizing, and then adding an antioxidant namely ethylenediamine tetraacetic acid disodium salt and an antioxidant namely sodium bisulfite at 75-95DEG C under the protection of CO2 air current; adding 15 amino acids at 70-100 DEG C under the protection of CO2 gas, adding tryptophan, tyrosine and cysteine hydrochloride at 60-70 DEG C, finally, adding gamma-aminobutyric acid at 20-35 DEG C, regulating pH value, and performing decoloring, so that the problem that an amino acid injection for livestock is poor in stability is solved. Multiple-step charging is adopted for preparing the amino acid injection for livestock, and under the protection of CO2, the tryptophan, the tyrosine and the cysteine hydrochloride are added at 60-70 DEG C, so that the stability of the tryptophan and the tyrosine is effectively improved, and the tryptophan and the tyrosine are prevented from being oxidized. The prepared injection is suitable for repair of organisms of livestock at the period that animal diseases are treated and after animals are ill.