1262 results about "Tannin" patented technology

The invention relates to a high-sealing polyacrylic ester dispersoid and a preparation method thereof; a multi-element emulsifier system which consists of an anionic emulsifier and a compound non-ionic emulsifier is adopted for controlling the charging process and components of the emulsifier in different polymerization periods, and the room-temperature self-crosslinking high-sealing polyacrylic ester dispersoid is prepared by a semi-continuous seeding emulsion polymerization process. The dispersoid has small particle size, good electrolyte-resistance (calcium ion) stability and high tolerance to various film forming accessory ingredients (various organic solvents with high boiling point). The dispersoid is used as seal coat of water-based wood coating and has good sealing performance to various woods; harmful volatile organic compounds (VOC) such as formaldehyde, and the like sealed against escaping from plates to pollute indoor environment, and the colored compounds such as turpentine, pine oil and tannin and the like are sealed against dissolving out of the plates to pollute pure top coating and white top coating of a water-based wooden ware; and in addition, the dispersoid can be used in water-based leather finishing agents.

The invention discloses a production method of aged dry red wine. The method is characterized by comprising the following steps of: removing the stem of grape and crushing; steeping at low temperature for 4-12 hours; after the steeping, separating part of the grape juice, and adding yeast into the pulp to perform temperature-controlled alcohol fermentation; meanwhile, centrifuging the separated grape juice for producing pink wine; after the alcohol fermentation, performing temperature-controlled micro-oxygenation on the separated raw wine; and then performing the processes of malolactic fermentation, clarification, freezing, filtering and the like to obtain the aged dry red wine. Through the invention, the chroma, tannin and total phenol of the produced aged dry red wine are obviously improved in comparison with the common aged dry red wine; moreover, the aged dry red wine produced by the method disclosed by the invention has stable color, full body, mellow and coordinative mouthfeel and strong structure sense; the aging potential is obviously enhanced; and the production method is simple and easy to control and suitable for industrial production.

The invention relates to aqueous acrylic acid series wooden ware sealing paint and a method for preparing special emulsion thereof. Nano emulsion with small particle diameter and narrow distribution is prepared by using an acrylic acid monomer containing multiple polar groups as a raw material. Multiple aids are added into the emulsion serving as a basic film-forming substance to form the novel aqueous wooden ware sealing paint. The polar functional groups on polymer molecule chains have good wetting property on wood, emulsion particles are easy to permeate into wood fiber conduits and quickly form films in conduit holes, and the paint can effectively prevent the moisture in the aqueous wooden ware paint from permeating into the wood and solves the problem of surface gully caused by the water-swelling wood; and meanwhile, the paint also can effectively seal the substances which are extremely easy to permeate to the outside such as turpentine, tannin and the like acknowledged in the wooden ware industry, and solves common problems for wide application of the aqueous wooden ware paint. The aqueous sealing paint also can be used for a solvent type paint coating system, and effectively prevents a large amount of solvent in the solvent type paint from penetrating into the wood during coating.

The invention provides a sterile polymerized covering for a wound surface-medical wet dressing for a burn wound, a preparation method of the dressing, and application. The dressing comprises the following components: 10 to 30g of chitosan, 30 to 80g of polyving akohol, 5 to 10g of alginate, 5 to 15g of isomaltose hypgather, 2 to 6g of carbomer 940, 2 to 5g of gelatin, 5 to 10g of sodium carboxymethylcellulose, 10 to 30g of glycerol, and 0.01 to 0.2g of menthol; 15 to 60g of condensed tannin which is remarkable in treatment can be selectively added; and a skin penetration enhancer or an appearance conditioning agent also can be selectively added. The dressing can be prepared into an irregular dressing in order to be suitable for the wound surfaces in irregular and special positions and also can be prepared into a solid plate-shaped dressing which can be shorn at random. According to the sterile polymerized covering dressing for the wound surface, the freezing and thawing technology and the irradiating technology are combined and cross-linked to realize the preparation, and the defects of the prior art can be overcome. The dressing is high in biocompatibility, free from toxicity and sensitization and high in mechanical strength and comfort level, is out of adhering during the process of being replaced after being attached for a long time, and is a nonantigenic protective barrier which has the effect of resisting and inhibiting bacteria.

The invention relates to a water shutoff agent applicable to high-temperature high-salt oil reservoir water shutoff profile control. The water shutoff agent consists of a main agent, a cross-linking agent, a stabilizing agent and water, wherein the main agent is sulfonated tannin or sodium humate; the cross-linking agent is the combination of an aldehyde cross-linking agent and a phenolic cross-linking agent; and the stabilizing agent is sodium silicate and non-ionic polyacrylamide. The water shutoff agent applicable to the high-temperature high-salt oil reservoir water shutoff profile control provided by the invention is applicable to the oil reservoir water shutoff profile control at the temperature of 90 to 150 DEG C and with the mineralization degree of greater than 2.0*10<5> mg/L; the gelation time is between 5 to 28 hours; and the strength of the formed gel is 0.060 to 0.085 MPa. The water shutoff agent has high integrity; and the plugging ratio to a rock core can be over 92 percent.

The present invention provides increased stain resistance, tannin blocking, adhesion, and various other properties. A composition in accordance with the principles of the present invention comprises at least two binders, nanoparticle pigment, and pigmentary titanium dioxide. In one embodiment, the present invention relates to a coating on a substrate wherein the coating has two binders, nanoparticle metal oxide pigment, and pigmentary titanium dioxide. Various additives may be included to formulate paint as known in the art.

A drilling fluid or mud additive having several components, including leonardite (humic acid); potassium acetate; partially hydrolyzed polyacrylamide (PHPA); polyanionic cellulose polymer (PAC); sulfonated asphalt; sulfoalkylated tannin; polystyrene maleic anhydride copolymer; micronized cellulose fiber; and calcium carbonate. These components are preferably premixed in a dry formulation as a powder or as pellets, and shipped to the site in bags or bulk tanks. This offers substantial advantages over the prior art in that the drilling mud of the present invention may be formed simply by adding the dry mix to a predetermined amount of water, and is thus much easier to make than the prior art wet mix drilling fluids, which typically require precise ratios of several different powders and liquids to be mixed together. Hydration buffers help keep the powder or pellets dry and flowable.

The present invention provides increased stain resistance, tannin blocking, adhesion, and various other properties. A composition in accordance with the principles of the present invention comprises at least three binders, nanoparticle pigment, and pigmentary titanium dioxide. In one embodiment, the present invention relates to a coating on a substrate wherein the coating has three binders, nanoparticle metal oxide pigment, and pigmentary titanium dioxide. Various additives may be included to formulate paint as known in the art.

Disclosed is a method of conditioning mixed liquor in a membrane bioreactor (MBR) system comprising adding an effective amount of a tannin containing polymer to the mixed liquor. Also disclosed is a method of improving flux in an MBR system comprising adding an effective amount of a tannin containing polymer to mixed liquor of the MBR. An effective amount of the tannin containing polymer may be added separately or in combination with other water soluble sludge filterability improvement polymers or sludge filterability improvement inorganic coagulants to the mixed liquor of the MBR. In one embodiment, the tannin containing polymer is a water soluble or dispersible copolymer of a tannin and a cationic monomer. In another embodiment, the tannin containing polymer is a water soluble or dispersible polymer of a tannin, a cationic monomer, and at least one monomer.

The invention discloses persimmon powder and a production technique thereof. The technique comprises the following steps that: after extraction of juice from persimmon, the juice undergoes zymohydrolysis, filtration, enzyme killing and concentration; after vacuum freeze drying of a concentrated solution, powdery materials with a tannin weight content between 1 and 99 percent are prepared; and the dissolution rate of the powdery materials in water is more than or equal to 50 percent. Compared with the prior art, the technique applies the technologies of zymohydrolysis and vacuum freeze drying in processing and production of persimmons, and selects the superior zymohydrolysis technology to perform cellular level processing on the persimmons on the premise that the compositions of the persimmons are researched; auxiliary materials used by the processing are ecological and environment-friendly and has no chemical pollution, and finished products are superior natural nontoxic chemical raw materials; and the materials are dried by adoption of the vacuum freeze drying technology, thereby the biological active ingredients of the materials are reserved to the maximum degree and the materials are easier to dissolve in water, consequently the materials are convenient to perform various chemical reactions so as to be widely applied in the chemical production. Moreover, the technique greatly releases the pressure of farmers for selling fresh fruit, and raw materials can be purchased from the farmers during the fruit thinning period; and the products obtained can be used for manufacturing cosmetics, recovering heavy metals in sewage, preventing the materials from being corroded, etc, and have a wide market prospect.

Provided herein are methods and compositions for treating or preventing metabolic disorders, such as obesity and diabetes. Methods may comprise modulating the activity or level of a sirtuin, such as SIRTl or Sir2. Exemplary methods comprise contacting a cell with a sirtuin activating compound, such as a flavone, stilbene, flavanone, isoflavone, catechin, chalcone, tannin or anthocyanidin, or an inhibitory compound, such as nicotinamide.

Methods and compositions for improved separation of inverted drilling mud emulsions into their component phases. The emulsion is mixed with a treatment comprising a cationic acrylamide/quaternary ammonium copolymer (I) and a cationic coagulant (II) comprising a copolymer of a tannin, and cationic monomer.

The invention discloses a preparation method for vegetable tannin dye liquor and application thereof to the dyeing aspect of a real silk fabric. The vegetable tannin dye liquor is obtained by extracting larch bark, waxberry bark, black wattle bark, valonia or gallnut serving as a raw material by using acetone or water as an extracting agent or is obtained by extracting a tannin extract product of larch, waxberry, black wattle, valonia or gallnut serving as the raw material by using water as the extracting agent. The vegetable tannin dye liquor prepared by adopting the method or a dye prepared from the dye liquor is applied to dyeing the real silk fabric; the dyeing effect is obvious; the technical problem of low dyeing fastness of a plant dye in the prior art is effectively solved; and an abundant dyeing effect can be achieved by combining a mordanting technology. The raw material selected by the invention is the bark or a byproduct of forest trees and fruit trees which are planted in abundance and are rich in resources; and the dye liquor has obvious resource advantage and broad application prospect.

An adsorbing collagen fibre-solidified tannin material for adsorbing and separating metallic ions (Pb, Cd, Hg, Cr and Cu) is prepared from animal skin through preparing collagen fibre membrane or granules, adding the said collagen fibres along with the aqueous solution of tannin to a reactor, reacting at 10-45 deg.c for 6-24 hr, laying aside for 12-24 hr, filtering, washing to remove excessive tannin, adding cross-linking agent, reacting at 20-70 deg.c for 2-8 hr, filtering, washing and drying at 60 deg.c for 12-24 hr. It has very high adsorption selectivity.

The method of extracting natural dye from walnut epicarp is to extract natural active dye from walnut epicarp containing condensated tannin component in 27-30 % possessing dyeing activity in the molecular weight range of 350-2000. By means of fermenting, drying, organic solvent extracting, adsorbing, refining and other technological steps, carbon black and reddish brown dyes of purity over 90 % are prepared. The obtained dyes have fast dyeing effect and high fastness and may be used as permanent pure botanic dyes. The obtained dyes are used in dyeing hair, wool, fabric, etc.

This invention relates to a method of using walnut shell as matrix for mushroom cultivation. Walnut shells contain vegetable tannin that inhibit reproduction of true fungus, so ignore possibility of it as mushroom medium. This method includes medium heat sterilization, vaccination. Medium preparation methods are : (1) smash the walnut shell, in size of diameter below 1 mm to 10mm, at room temperature water immersion walnut shells 24-72 hours to reduce tannin content, walnut shells and water quality ratio (1 : 2) - (1:8); (2) take walnut shell, wood and wheat bran as compost, quality ration of: the walnut shell 50% -70%, 10% -38% sawdust, wheat bran 18% -10%, by adding glucose 0.5% -1% and Gypsum 1%. This invention use abandoned walnut shells as materials, not rely on higher-value raw materials, will brought facilitating role for walnut producing farmers, walnut processing enterprises and mushroom cultivation.

The invention provides a fluid loss control additive for oleaginous liquids and oleaginous wellbore fluids containing the additive. The additive is the reaction product of a tannin compound, a polyamidoamine, a commercial lecithin, and an acid. The preferred tannins are derived from quebracho and wattle trees. The preferred acid is sulfuric acid. The preferred polyamidoamine is a long-chain fatty alkyl partial amide which is the reaction product of a polyalkylenepolyamine and a fatty acid containing from about 8 to about 30 carbon atoms, most preferably tall oil fatty acids, wherein at least one of the amino groups of the polyalkylenepolyamine is not amidated. The commercial lecithin contains from about 30% to about 50% of the vegetable oil from which the lecithin is concentrated, preferably soybean oil, and is present in the additive in an amount from about 1% to about 3% by weight, based on the weight of the tannin. Preferably the additive contains greater than 15% by weight of the polyamidoamine, based on the weight of the tannin.

A functional material of the present invention is characterized in that it has: a loading component selected from functional components comprising the group consisting of catechins, vitamins, tannins, natural moisturizing factors and essential oils being derived from plants; and a functional ingredient being constituted of an organic polymer material in which the loading component is loaded on the surface or in the inside thereof, and which is a fine particle; and it exhibits dispersibility with respect to linseed oil. Since the functional material comprising the functional ingredient with the functional component loaded exhibits high dispersibility with respect to the oil, it turns out that it is possible to provide a functional material which exhibits good properties as fragrant cosmetics of good stability. In particular, a function material prepared by means of a spray-drying method is preferable.

The invention discloses a composite coal slurry dispersant used in the coal chemical engineering field. The composite coal slurry dispersant is composed of the following components in percentage by weight: 35 to 65% of dispersant main agent, 5 to 25% of viscosity reducer, 0.5 to 5% of surface modifier, 0.5 to 2.5% of metal ion chelating agent, 0.2 to 2% of corrosion inhibitor, and 0.5 to 58.8% of water; wherein the dispersant main agent is one or more of naphthalene sulfonate formaldehyde condensate, acrylic acid-allyl polyoxyethylene ether-sodium styrene sulfonate ternary copolymer, naphthalene sulfonic acid-styrene-maleic acid ternary copolymer, sodium lignin sulfonate, and modified polymethacrylate copolymer, the viscosity reducer is one or more of tannic acid, sulfonated tannin, sulfonated phenolic resin, and sodium nitrohumate, the surface modifier is one or more of dodecyl dimethyl benzyl ammonium chloride, OP-10, AEO-20, SP-40, and TWEEN-60, the metal ion chelating agent is one or more of polyacrylic acid, dihydroxyethyl glycine, and EDTA, and the corrosion inhibitor is benzotriazole and/or thiourea. The coal slurry dispersant is nontoxic, safe, and environment-friendly, and has a wide temperature and application range and good slurry-forming property.

The invention discloses a method for preparing persimmon tannin from persimmon, which comprises the following main processes: cleaning and screening persimmons, squeezing the persimmons into juice, then extracting the juice by ultrasonic wave, and concentrating and drying the extract to obtain a tannin product. The method for preparing the tannin does not need high temperature during the production, carries out ultrasonic reinforced extraction, does not destroy effective components which are easy to hydrolyze or have oxidation property, reduces energy consumption at the same time, and has good safety and simple and feasible operation during normal pressure extraction; equipment is convenient to maintain; and the best extraction rate can be obtained by the ultrasonic reinforced extraction for about 20 minutes. The method prepares the tannin by using the persimmons with low cost to replace gallnut as a main raw material, greatly reduces the raw material cost, and has remarkable comprehensive economic benefit.

The invention relates to a method for extracting salidroside, polysaccharose and tannin-type substances from rhodiola root crude drugs. The method comprises the following steps of: firstly, drying and crashing rootstalks of the rhodiola root crude drugs; then, adopting the supercritical carbon dioxide technology to extract oil type substances from the rhodiola root crude drugs, and carrying out microwave extraction, deposition in alcohol and filtration so as to obtain sediment and supernatant fluid; and then, drying the sediment to obtain a rough polysaccharose powder product of the rhodiola, and carrying out absorption by macroporous resin, elution and drying to the supernatant fluid so as to obtain a salidroside powder product; and finally, using acetone for extracting microwave extraction residue, and obtaining the rhodiola root tannin extract after centrifugation and drying. The method can simultaneously extract three active ingredients, namely, salidroside, polysaccharose and tannin in the rhodiola root, thus improving the utilization rate of the rhodiola root and increasing the utilization value of the rhodiola root.

The invention relates to a high temperature resistant well-cementing spacer fluid and a preparation method thereof. The spacer fluid consists of: 100 parts by weight of fresh water, 2-8 parts by weight of a suspending agent, 2-10 parts by weight of a diluents, 25-400 parts by weight of a weighting agent, and 1-15 parts by weight of a flushing agent. Specifically, the suspending agent is composed of 100 parts by weight of OCMA bentonite, 2 parts by weight of hydroxypropyl guar gum and 8 parts by weight of xanthan gum; the diluent is composed of 100 parts by weight of sodium lignin sulfonate and 20 parts by weight of sulfonated tannin; the flushing agent consists of 40 parts by weight of fatty alcohol-polyoxyethylene ether, 40 parts by weight of triethanolamine oleate and 20 parts by weight of sodium tripolyphosphate; and the weighting material is barite. The spacer fluid has stable performance under 180DEG C high temperature condition, still has good rheological performance under the premise of ensuring the system good suspension stability, is compatible with conventional cement slurry and drilling fluid systems, improves the rheological properties of drilling fluid, enhances the displacement efficiency, and reinforces the cementation quality of a cement ring with a well cementation first interface and a second interface.

The present invention provides a packaged coffee beverage subjected to heat-sterilization, wherein

• • (A) a concentration of chlorogenic acids is not less than 0.1% by mass and less than 0.14% by mass,
  • (B) a mass ratio of chlorogenic acids/tannin (FOLIN-DENIS method) is in the range of 0.6 to 1.0, and
  • (C) a mass ratio of dichlorogenic acids/chlorogenic acids is in the range of 0.07 to 0.16.

Methods of deoiling oily water such as SAGD and frac produce water. The oily water is treated with a natural coagulant selected from tannins and chitosan. A cationic and/or anionic flocculant may also be added to the treated oily water. The thus treated oily water may be subjected to conventional mechanical oil separation techniques such as hydrocyclonic separation, dissolved air flotation, entrapped air flotation, induced gas flotation, gravity filters, reverse osmosis filters, API, or Voraxial® bulk separators and the like.

The invention discloses a sulfur-free clarifying method for cane sugar manufacture. According to the method, lime milk, phosphoric acid, calcium bicarbonate and tannin are taken as clarifying agents, sugarcane mixed juice is taken as the raw material, after filtering by a sieve, primary clear juice is obtained through clarifying by a lime method, then the tannin and calcium bicarbonate are added for secondary clarifying, so as to obtain secondary clear juice. Sulfur-free sugar is produced without using SO2 in the whole process, so that the problem that domestic sugar has SO2 is solved thoroughly, the safety of the sugar is improved, and domestic sugar products are increased.

The invention relates to a method for preparing an activated carbon-persimmon tannin compound absorbent. The method comprises the following steps: 1) pre-treating the activated carbon; 2) on the basis that a ratio of the treated activated carbon to a persimmon tannin solution is 0.500g:250ml, preparing the treated activated carbon and the persimmon tannin solution with concentration of 40mg/L; adding the treated activated carbon into the persimmon tannin solution of which the pH value is 3.0; magnetically stirring for 8-24 hours; filtering with oily filter paper; washing with distilled water; and drying in an oven at 85-105 DEG C to finally obtain the activated carbon-persimmon tannin compound absorbent. The method has the advantages that the cost is low, the process is simple and the prepared compound absorbent has better absorbing effect. The compound absorbent can be used for purifying the industrial sewage and domestic water, can be used as a clarifying agent for liquor and an absorbent for cigarette filter tip, and is more beneficial to the health of human.

The invention discloses a method for hydrophobic modification of nanocrystalline cellulose and belongs to the technical field of functional nano materials. According to the method, nanocrystalline cellulose is dispersed in aqueous solution, dispersion liquid is treated with ferric chloride and tannin, centrifugal separation is conducted to obtain iron-tannin membrane modified nanocrystalline cellulose, then the iron-tannin membrane modified nanocrystalline cellulose is dispersed in an ethyl alcohol and water mixed solution containing low-surface-energy substance, centrifugal layering is conducted on mixed liquid obtained after reaction, and then freeze drying is conducted to obtain the nanocrystalline cellulose with a hydrophobization modified surface. The prepared hydrophobization modified nanocrystalline cellulose can be uniformly dispersed in various polar solvents, product diversity is high, preparing process is simple, environment pollution is avoided, and cost is low. The hydrophobization modified nanocrystalline cellulose is suitable for large-scale production and has broad application prospects in fields including nano-composite reinforcing materials and biomedical materials.

The invention discloses a formaldehyde scavenger, which comprises main ingredients: a reactant containing chitosan and vegetable tannin, as well as a penetrant, a surfactant, a pH regulator and a solvent. The preparation method of the formaldehyde scavenger comprises the following steps: heating the solvent, firstly adding chitosan, penetrant, surfactant and pH regulator into the solvent, stirring and dissolving, after the dissolving is thorough, then adding vegetable tannin, stirring and dissolving, after the dissolving is thorough, filtering and filling. The formaldehyde scavenger is especially suitable for removal of formaldehyde in fur products. Aiming at the texture and structure characteristics of fur, the selected reagent is concretely designed, and comes from natural animal and plant ingredients, thus being good in safety, incapable of causing harm to a user and clothes, and meeting the related laws and regulations and the quality standard of international and domestic fur clothes. The formaldehyde scavenger can be used for treating fur of fur processing industry, and can also meet the demand on removing formaldehyde of a common consumer on the fur products.

The invention discloses a rust transforming agent. The rust transforming agent consists of pre-treatment liquid and post treatment liquid, wherein the pre-treatment liquid is prepared from the following raw materials in percentage by weight: 19 to 22 percent of metal iron powder, 9 to 11 percent of urotropin, 9 to 11 percent of glycerol and 58 to 61 percent of water; the post treatment liquid is prepared from the following raw materials in percentage by weight: 45.5 to 47.5 percent of polyphosphoric acid, 37 to 40 percent of water, 2.5 to 3.5 percent of manganese carbonate, 8 to 10 percent of acetic acid and 4 to 5 percent of tannin. The preparation method comprises the following steps of: the preparation steps of the pre-treatment liquid, namely getting water in proportion, adding the urotropin into the water in proportion, adding the glycerol into the mixture in proportion, and adding the pure iron powder into the mixture in proportion; and the preparation steps of the post treatment liquid, namely adding the polyphosphoric acid in proportion, adding the water in proportion, adding the acetic acid in proportion, adding the manganese carbonate in proportion, adding the tannin in proportion, and stirring the mixture for 2 to 3 minutes. The using method of the rust transforming agent comprises the following steps of: brushing a relatively thin layer of pre-treatment liquid onto the surface of rusting iron and steel; spraying the post treatment liquid onto the rusting iron and steel one hour later; and staying the rusting iron and steel for 24 hours to obtain an integrated rust transforming film. The rust transforming agent is convenient to use and the rust-preventing period is long.

The invention relates to the field of health products, and discloses a medicament. The medicament comprises main components of natural precious herbs such as morinda officinalis, herba cistanche, gastrodia elata, eucommia ulmoides, polygonum multiflorum, saffron crocus, medlar, angelica sinensis, rhizoma polygonati, pseudo-ginseng, lucid ganoderma, ginseng and the like. The invention also discloses the content of each component. The medicament comprises a plurality of effective ingredients of panaxoside, panaxadiol saponin and the like, has the functions of improving blood microcirculation, relieving and balancing cranial nerve, smoothing lymph to expel toxin, and promoting metabolism, contains starch, protein, fat, tannin, flavonoids compounds, phenolic compound and trace volatile oil, and also contains microelements iron, zinc and the like with biological activity; the leaf and stem contain a little of alkaloid, which has the functions of whitening the skin, resisting fatigue and caducity, improving mental sleep, physical power and function, and the like. The invention also discloses a preparation method of the medicament disclosed by the invention. The method comprises the steps of selecting materials, cleaning, fertilizing, drying and mechanically crushing. The process is advanced and unique; the dosage form can be changed; any other chemical reagent is not added; the medicament is environment-friendly.