8 results about "Amphoteric starch" patented technology

The present invention relates to a papermaking additive, a method for producing a papermaking additive, and paper. The present invention provides a papermaking additive which has less viscosity increase after long-term storage and exhibits excellent drainage and paper strength effects. A papermaking additive comprising a (meth)acrylamide-based polymer, the (meth)acrylamide-based polymer having starch (a1), (meth)acrylamide (a2), a polymerizable monomer having an amino group (a3), a polymerizable monomer having a carboxyl group (a4), and a polymerizable monomer having a sulfonic acid group (a5) as essential constituent components, the starch (a1) being two or more selected from the group consisting of unmodified starch, oxidized starch, esterified starch, etherified starch, amidated starch, cationized starch, amphoteric starch, and crosslinked starch.

The invention relates to the technical field of wastewater treatment, in particular to a flocculating agent for treating papermaking wastewater. The problem that fine suspended solids (SS) and soluble lignin derivatives in the papermaking wastewater cannot be simultaneously removed by a traditional flocculant is solved. The flocculant comprises a component A and a component B, the component A comprises a zirconium-silicate-chitosan copolymer and modified chitosan quaternary ammonium salt, soluble lignin is captured by utilizing zirconium site specificity on polyzirconium silicate, and the flocculant is endowed with extremely high positive charge density and chelation function; the component A comprises a component A and a component B, the component B comprises an amphoteric starch grafted copolymer and a nano composite material, during use, the component A is firstly added to capture chromaticity and neutralize SS, then the component B is added, the component A and the SS are bridged by using anion and cation groups of the amphoteric starch grafted copolymer, and the nano composite material is used for net capture and weight increment; through the synergistic effect of multiple modified substances, the turbidity, chromaticity and COD of the papermaking wastewater are synchronously and efficiently removed.

An oil-in-water emulsion having long-term stability comprising (I) an oil phase present in the emulsion in the form of droplets, (II) an aqueous phase, and (III) a polymeric component. The polymer component includes (A) a starch component comprising a specific hydrophobically modified amphoteric starch; (B) a non-starch polysaccharide; and (C) a crosslinked starch. The emulsions exhibit stability of at least 4 weeks at room temperature.

The invention discloses a low-basis-weight high-strength corrugated medium paper production technology, and belongs to the technical field of papermaking. The technology mainly comprises the following steps of: a) preparing pulp: crushing and screening OCC waste paper, finely pulping the OCC waste paper by using a double-disc pulping machine until the pulping degree is 30-36 degrees SR, and purifying the OCC waste paper by using a first-stage three-section low-concentration heavy slag separator in front of a net, so as to obtain finished pulp with sufficient fiber fibrillation and few impurities; b) stably transferring the wet paper sheets: adopting a single hanging type drying cylinder structure and a paper stabilizing air bellow for negative pressure adsorption, and carrying out whole-course physical support and pneumatic control on the wet paper sheets; and c) low-consumption and high-efficiency composite enhancement: carrying out surface sizing by adopting an optical measuring rod, and jointly improving the performance of the paper sheet in cooperation with an internal and external sizing system consisting of polyvinyl alcohol with specific molecular weight, an internal AKD neutral sizing agent and amphoteric starch. According to the invention, the problems of insufficient strength, high paper breaking rate and large energy consumption in 42 g / m < 2 > ultra-low basis weight corrugating medium paper production are solved, and the product is high in strength, good in water resistance and low in production cost.

This invention relates to the field of papermaking processing technology and discloses a composite pulping and papermaking process for whiteboard paper, comprising the following steps: spraying waste paper raw materials with an industrial urea aqueous solution for high-concentration impregnation in a dry zone; injecting hot water for neutral high-temperature thermodynamic deconstruction to obtain a high-temperature medium-concentration pulp; instantaneously mixing the high-temperature medium-concentration pulp with cold white water in the wire section of a papermaking machine to implement rapid cooling and conformational locking to maintain the metastable open conformation of fibers; injecting anhydrous calcium chloride solution and subjecting it to high-frequency turbulent shearing to obtain a pre-crosslinked pulp; adding amphoteric starch adhesive and subjecting it to high-frequency fluid pulse shearing to complete pulse coordination crosslinking to obtain a crosslinked pulp; dehydrating and forming to obtain a wet paper web; and then subjecting it to heat shrink curing and drying to obtain whiteboard paper base paper. This invention constructs a three-dimensional ion coordination network through the synergistic effect of thermodynamic decoupling and kinetic coordination, which improves the ring crush strength index and interlayer bonding strength of the whiteboard paper base paper while repairing fiber keratinization defects, and effectively reduces the pollution load of the white water system.

The application relates to the field of traditional Chinese medicine compositions, and particularly discloses a traditional Chinese medicine composition for treating chronic prostatitis and a preparation method thereof; the traditional Chinese medicine composition comprises the following steps: S1: preparing a matrix material by taking amphoteric starch, L-arginine hydrochloride, hydroxypropyl cellulose, water and glutaraldehyde; S2: preparing traditional Chinese medicine extracts by taking sophora flavescens, psoralea corylifolia, patrinia, cuscuta chinensis, herba epimedii, red peony root, verbena, Chinese chive seed, Chinese yam, prepared rehmannia, cornus officinalis, radix paeoniae rubra, alisma orientale, poria cocos, cassia, prepared aconite, and yam of china; S3: preparing a traditional Chinese medicine gel by taking the traditional Chinese medicine extracts, water and the matrix material; S4: preparing a warming agent by taking an emulsifier, water, n-docosane and hydroxypropyl cellulose; and S5: uniformly mixing the traditional Chinese medicine gel, borneol, the warming agent, poloxamer, carboxymethyl cellulose, hydroxypropyl-BETA-cyclodextrin and ethanol, controlling the pH value to be 7.3-7.5, and obtaining the traditional Chinese medicine composition.

This invention discloses a method for preparing and applying a bio-based plastic starch slurry with medium-temperature water solubility, belonging to the field of textile manufacturing technology. The invention uses native starch as raw material, utilizes amylase to hydrolyze starch to prepare branched-limit dextrin, and uses this as a plasticizer for the starch slurry. Then, amphoteric starch is prepared by grafting in a two-step process at low temperature. Finally, an ethanol-alkali method is used to treat the starch to obtain a medium-temperature water-soluble amphoteric starch slurry. The preparation, boiling, and sizing processes of this slurry all occur at temperatures not exceeding 70℃, achieving medium-low temperatures throughout the entire process. This significantly reduces energy consumption while ensuring the sizing yarn performance meets weaving requirements. Furthermore, the prepared bio-based plastic starch slurry with medium-temperature water solubility exhibits excellent sizing performance, and the sized glass fiber warp yarns possess high bundle strength, high abrasion resistance, excellent mechanical properties, and excellent softness.

The invention belongs to the technical field of preparation of active substance preparations, and discloses a preparation method of a composite algae microcapsule. The amphoteric starch containing hydrophilic and oleophylic groups is used as a main inclusion, is suitable for the stomachless physiological characteristic of tilapia, and can significantly improve the bioavailability; the wrapped active multi-nutrient particles contain various active nutrient substances such as algae astaxanthin solid particles, emulsified liquid of nanoscale emulsified particles, fish soluble, yeast cell wall powder and hylothrix powder. When the composite algae microcapsule is added into a tilapia compound feed, the brood quantity, the egg laying quality and the fertilization rate of parent tilapia can be remarkably increased, the hatching emergence rate is increased, the anti-stress capability, the immunocompetence and the growth performance of fry are enhanced, the breeding efficiency and the fry quality of tilapia culture are optimized, and the survival rate of tilapia is increased. The technical problems that in existing tilapia mossambica breeding, parent fish reproductive performance is low, fry are weak in physique, and the breeding survival rate is low are solved.