44 results about "Hydroxypropyl guar" patented technology

The invention relates to the technical field of petrochemical engineering, and discloses a preparation method and application of temperature-resistant modified carboxymethyl hydroxypropyl guar gum, carboxymethyl hydroxypropyl guar gum, sodium hydroxide, 2-chloro-4-cardanol quaternary ammonium salt-6-phenyl-s-triazine and the like are subjected to a reaction, and the temperature-resistant modified carboxymethyl hydroxypropyl guar gum is obtained. Quaternary ammonium salt cations are introduced into carboxymethyl hydroxypropyl guar gum and can form electrostatic interaction with sodium carboxylate anions of the carboxymethyl hydroxypropyl guar gum, so that the molecular chain interaction force between guar gum is improved, the tackifying effect can be achieved, and the apparent viscosity is improved. The temperature-resistant modified carboxymethyl hydroxypropyl guar gum has the advantages of high apparent viscosity and good thickening effect, has excellent temperature resistance and shear resistance, and has good practical application in fracturing fluid thickeners due to introduction of an alkyl long chain and formation of a physical cross-linked network through hydrophobic association action, and the temperature-resistant modified carboxymethyl hydroxypropyl guar gum has the advantages of high apparent viscosity and good thickening effect.

The invention provides a suspension stabilizer, a preparation method thereof and gypsum-based self-leveling mortar, and belongs to the technical field of building materials, the suspension stabilizer adopts low-viscosity and high-substituted hydroxypropyl guar gum, the hydroxypropyl molar substitution MS of the low-viscosity and high-substituted hydroxypropyl guar gum is 0.6-2.0, and the viscosity of the low-viscosity and high-substituted hydroxypropyl guar gum is 200-1000mPa. S. The hydroxypropyl guar gum with specific substitution degree and viscosity is adopted as the suspension stabilizer, so that the suspension stability is higher, the problem of serious bleeding can be solved, and the prepared gypsum self-leveling mortar can simultaneously meet the requirements of suspension stability and fluidity.

The invention relates to the field of washing, and particularly discloses sulfur tea tree essential oil silicone oil-free shampoo. The shampoo comprises the following raw materials: water; fatty alcohol polyoxyethylene ether sodium sulfate; coconut oil monoethanolamide; hydroxypropyl guar gum hydroxypropyl trimethyl ammonium chloride; disodium EDTA (Ethylene Diamine Tetraacetic Acid); cocamidopropyl betaine is added; an alkyl glycoside; sodium lauroyl sarcosine; allantoin; pPG-3 (Polypropylene Glycol) octyl ether; a polyquaternary ammonium salt-52; colloidal sulfur; d-panthenol; 10 parts of polyquaternium-10; a pearling agent; maltotetraose; tea tree essential oil; a preservative; a colorant; daily-use essence; and citric acid monohydrate. The preparation method comprises the following steps: sequentially adding the raw materials, dispersing and dissolving, adjusting the pH value, filtering and discharging. The shampoo disclosed by the invention can keep water-oil balance of scalp and reduce the problems of hair damage and dryness at the same time.

The invention belongs to the technical field of fracturing fluids, and relates to a guanidine gum fracturing fluid and an application thereof. The invention provides a guanidine gum fracturing fluid which comprises an organic boron cross-linking agent and a base fluid, and the mass ratio of the organic boron cross-linking agent to the base fluid is (0.2-1): 100. The synthesized organic boron cross-linking agent is applied to a water-based fracturing fluid system with hydroxypropyl guar gum as a thickening agent, and the organic boron cross-linking agent has good temperature resistance and shear resistance. Meanwhile, field fracturing tests of multiple oil and gas wells are completed, and the use requirement of 120 DEG C formation temperature can be met.

The invention provides a fracturing fluid base fluid, a water-based fracturing fluid and a preparation method of the water-based fracturing fluid, and relates to the technical field of oil fields. The fracturing fluid base fluid is prepared from the following components in percentage by mass: 97.3 percent to 98.1 percent of produced water, 0.5 percent to 0.55 percent of hydroxypropyl guar gum, 0.004 percent to 0.005 percent of sodium hypochlorite, 0.015 percent to 0.03 percent of citric acid, 0.1 percent to 0.18 percent of dodecyl dimethyl benzyl ammonium bromide, 0.2 percent to 0.3 percent of ethylenediamine tetraacetic acid disodium salt, 0.3 percent to 0.5 percent of a temperature stabilizer, 0.6 percent to 0.8 percent of a pH value regulator and 0.2 percent to 0.3 percent of a cleanup additive; the pH value of the fracturing fluid base fluid is 7.5. The fracturing fluid base fluid prepared from the produced water has the advantages of rapid adhesion, no precipitation, no weak crosslinking and no floccule phenomenon, so that the guar gum fracturing fluid prepared from the fracturing fluid base fluid has the characteristics of self-adaption to a reservoir, ultralow damage and high performance.

The invention discloses a composite fracturing agent for a shale oil reservoir and a preparation method of the composite fracturing agent, and belongs to the technical field of oilfield chemistry. The composite fracturing agent for the shale oil reservoir is prepared from the following components in percentage by weight: 0.3 to 0.6 percent of a composite thickening agent, 0.15 to 0.25 percent of a cross-linking agent, 0.08 to 0.12 percent of a gel breaker, 0.03 to 0.06 percent of a bactericide, 0.15 to 0.25 percent of a surfactant and 0.25 to 0.35 percent of a clay stabilizer, and the balance of water. The composite thickening agent comprises a modified polyacrylamide thickening agent and hydroxypropyl guar gum. According to the composite fracturing agent for the shale oil reservoir, a modified polyacrylamide thickening agent and hydroxypropyl guar gum are compounded to obtain a composite thickening agent, the composite thickening agent is matched with a cross-linking agent, a gel breaker, a bactericide, a surfactant, a clay stabilizer and water according to a specific proportion, the multiple components have a synergistic effect, a thickening system provides viscosity support, the cross-linking system enhances elasticity, and the fracturing effect is good. The gel breaking system controls flowback, the surfactant and the clay stabilizer protect the reservoir, and the bactericide guarantees the stability of the system.

An ocular insert, comprising: (a) at least one first mucoadhesive polymer selected from the group consisting of hyaluronic acid or sodium hyaluronate, polyvinylpyrrolidone, carboxyl methyl cellulose, and a combination thereof; (b) at least one second mucoadhesive polymer selected from the group consisting of hydroxyethyl guar, hydroxypropyl guar (HP-guar), hydroxypropyl methylcellulose (HPMC), and a combination thereof; (c) at least one plasticizer and (d) olopatadine in an amount from 2% to 20% by weight of the ocular insert, wherein the ocular insert has no visible recrystallization under examination with a polarized light microscope at approx. 100× magnification, wherein the ocular insert has a single-layer, homogeneous structure, wherein the at least one first mucoadhesive polymer and the at least one second mucoadhesive polymer are together present in the ocular insert in an amount of from about 75% to about 90% by weight of the ocular insert.

A patch composition for targeting herpes virus comprising the following ingredients: a patch base, trisodium phosphate, malic acid, sorbitol, sodium benzoate, cellulose gum, peppermint, sodium saccharin, naringin, wind wheel grass extract, xanthan gum, polyethylene glycol-8, calcium carbonate, hydroxyethyl cellulose, hydroxypropyl guar gum, sodium nitrate, hydrated silica, sodium lauryl sulfate, strontium chloride hexahydrate, tranexamic acid, two-faced needle extract, sodium monofluorophosphate, sea salt, potassium nitrate, sodium chloride, and purified water q.s.

Disclosed are novel solutions in which a preexisting sediment capping system is integrated with improvements such as a cap ingredient processing and delivery apparatus, cap processing method and novel compositional cap product, whereby a hazardous site is remediated by delivering at least one novel cap composition layer over the contaminated subaqueous waterway or terrestrial substrate floor. One embodiment includes a powdered activated carbon (“PAC”) based cap layer produced by the system and methodology disclosed, the cap layer ingredients comprising predetermined ratio amounts of dry PAC and dry powdered 2-Hydroxypropyl guar gum (“HGG”) used as a safe and effective delivery ingredient, blended in a cap processing and delivering apparatus with a dewatered sand semi-slurry, the processed resulting capping composition being delivered in a manner such that a novel PAC cap layer is provided to a cap placement area in need of remediation.

The invention discloses a preparation method of high-temperature-resistant modified carboxymethyl hydroxypropyl guar gum in the technical field of oilfield chemistry, which comprises the following steps: dispersing a specific star-shaped triazine block copolymer, mixing with a carboxymethyl hydroxypropyl guar gum solution, heating, reacting, drying and crushing to obtain a final product. Wherein the star-shaped triazine block copolymer is prepared by reacting melamine with maleic anhydride to form a core, sequentially grafting polyethylene glycol amine and a polycaprolactone chain segment, and carrying out end capping by a silane compound. The copolymer can be combined with a guar gum matrix through multiple effects, and the network structure stability and the viscosity retention rate of the composite colloid under the high-temperature condition are remarkably improved. The preparation method provided by the invention is simple and convenient in process, and the obtained modified product is particularly suitable for fracturing operation of high-temperature oil and gas reservoirs.

The present application relates to toothpaste technical field, specifically, it relates to the bacteriostatic oral care toothpaste based on active ingredient of mountain ardisia. It includes sorbitol, hydrated silicon stone, deionized water, polyethylene glycol-8, sodium lauryl sulfate, essence, polyquaternium-22, cellulose glue, sodium saccharin, hydroxypropyl guar gum, sodium methyl hydroxybenzoate and mountain ardisia extract;The bacteriostatic oral care toothpaste based on active ingredient of mountain ardisia, by introducing the mountain ardisia extract with specific chemical composition into the formula system, effectively solve the problem that the existing oral care product is not strong in specificity to periodontal pathogenic bacteria, and the bacteriostatic spectrum is relatively single;The mutual synergistic effect relationship exists between the extract, not only broaden the inhibition spectrum of periodontal pathogenic microorganism, also can reduce the oxidative stress and inflammatory response of gingival tissue, thereby maintaining oral cleaning, improve the comprehensive performance of oral care product and the mildness of use.

Methods and compositions for treating hair, such as to reduce split ends, seal cracks in hair cuticles, reduces damage to hair, and / or reduce frizziness and / or hair fly-aways. The methods and compositions use a combination of hydroxypropyl guar hydroxypropyltrimonium chloride, Argania spinosa kernel oil, guar hydroxypropyltrimonium chloride, and algin. In some instances, the composition further contains bis-aminopropyl diglycol dimaleate. In some instances, the composition further contains a fructooligosaccharide and / or Beta vulgaris root extract. In some instances, the composition further contains arginine, aspartic acid, glycine, alanine, serine, valine, proline, threonine, isoleucine, histidine, and / or phenylalanine.

The invention relates to the technical field of preparation of environment-friendly dust suppressants, in particular to an intelligent preparation method of an environment-friendly coal and mineral dust suppressant, which comprises the following steps: preparing preparation raw materials, adding hydroxypropyl guar gum into deionized water according to a preset adding rate, and stirring uniformly; dynamically capturing image data at a foam generation moment in a stirring process in real time, and determining a light transmittance detection time point based on a foam coverage rate and a foam stability degree; determining the dissolution completion time point of the hydroxypropyl guar gum based on the fluctuation attenuation factor of the light transmittance; based on the dissolution efficiency, determining the adding rate of subsequently added raw materials; automatically adding an acid-base regulator to regulate the pH value of the solution system, collecting the viscosity, light transmittance and pH value data of the solution, and judging that the reaction is completed when the index data does not have abnormal fluctuation; and filtering the reacted solution through a precise filtering device to obtain the dust suppressant.

The present invention relates to the technical field of cross-linking agents and discloses a cross-linking agent for fracturing and a preparation method thereof. The invention involves reacting a tris(2-aminoethyl)amine diBoc compound, a dibromoalkane, glycidol, trifluoroacetic acid, and the like to obtain a polyolamine complexing agent; the polyolamine complexing agent is then reacted with sodium hydroxide and borax to obtain the cross-linking agent for fracturing. The polyolamine complexing agent contains multiple active cross-linking sites of hydroxyl and amino groups. When reacted with borax, the cross-linking agent for fracturing is obtained. This improves the degree of cross-linking between the cross-linking agent and hydroxypropyl guar gum fracturing fluid, exhibits a long cross-linking time in a low-concentration guar gum fracturing fluid system, and exhibits good pick-up performance under prolonged stirring. Furthermore, the cross-linking agent and hydroxypropyl guar gum form a stable gel system, exhibiting excellent high-temperature resistance and maintaining good viscosity even at high temperatures.

The application discloses a high-temperature-resistant and shear-resistant modified hydroxypropyl guar gum, a preparation method and application thereof, and belongs to the technical field of modified guar gum. The high-temperature-resistant and shear-resistant modified hydroxypropyl guar gum, the preparation method and application thereof have a formula which is modified by introducing isocyanate modified carbon nanotubes and quaternary ammonium salt and adopts a multi-step synthesis process. Specifically, the formula includes preparation of aminated carbon nanotubes, isocyanate modification, modification of hydroxypropyl guar gum and introduction of quaternary ammonium salt. The last modification step is completed through ultraviolet irradiation, so that the high-temperature-resistant and shear-resistant performance is enhanced. In the preparation process, ultrasonic dispersion and stirring reaction are adopted to ensure that the reaction is uniformly carried out, and finally the modified hydroxypropyl guar gum with excellent mechanical properties and rheological properties is obtained. The modified material can still maintain good shear-resistant performance in a high-temperature environment and is suitable for industrial applications requiring high-temperature stability.

The invention discloses a high-strength oil-gas well temporary plugging agent and a preparation method thereof.The preparation method of the temporary plugging agent comprises the steps that hydroxypropyl guar gum, chitosan, dibenzoyl peroxide and deionized water are mixed and then put into a reaction kettle, acrylamide and polyvinyl alcohol are added for a mixed reaction, cooling is conducted, and modified hydroxypropyl guar gum is obtained; the preparation method comprises the following steps: mixing kaolin obtained by crushing, calcining and ball-milling kaolinite with ethyl cellulose, 2, 5-furandimethanol and deionized water, adding dimethyl sulfoxide and potassium acetate, carrying out ultrasonic treatment, and drying to obtain modified kaolin; mixing the modified hydroxypropyl guar gum, polylactic acid, sodium carboxymethyl cellulose and deionized water to obtain a colloidal solution; and homogenizing the colloidal solution, the modified kaolin, phytic acid and N-hydroxysuccinimide to obtain the oil and gas well temporary plugging agent. The prepared temporary plugging agent has the advantages of high temporary plugging strength, high temperature resistance, high pressure resistance and long plugging time, and the used raw materials are all environment-friendly raw materials, so that the damage to the stratum and the environment is avoided.

The invention relates to the technical field of polymer suspension preparation, and relates to a polymer suspension for coal rock gas, comprising the following components in parts by weight: 0.05-0.07 parts by weight of a viscosity regulator, 0.1-0.5 parts by weight of polyacrylamide, 0.2-0.8 parts by weight of hydroxypropyl guar gum, 0.01-0.05 parts by weight of borax, 0.03-0.06 parts by weight of a polyoxyethylene octylphenyl ether surfactant, 0.02-0.05 parts by weight of a sodium hydroxide pH regulator, 0.01-0.03 parts by weight of a citric acid antiscalant, and 0.05-0.06 parts by weight of a sodium benzoate preservative. The viscosity modifier is prepared by reacting carboxymethyl cellulose and amino-polyethylene glycol-lipoic acid in a ratio of 1:1.2-1.5 and forming an amide bond under the conditions of 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride and N-hydroxysuccinimide. The viscosity modifier is used to enhance the viscosity, high temperature stability and salt resistance of the suspension, thereby effectively solving the limitations of traditional suspensions.

The invention discloses a gas well foam scrubbing agent as well as preparation and application thereof, and relates to the technical field of gas well foam scrubbing agents, the gas well foam scrubbing agent comprises 10%-20% of sodium alpha-olefin sulfonate, 5%-10% of lauramide propyl amine oxide, 0.3%-0.6% of hydroxypropyl guar gum, 5%-10% of block polyether, 3%-6% of ethoxylated sulfonate, 0.5%-2% of hydrophobic nano silicon dioxide, 3%-8% of a microencapsulation foaming agent, 1%-3% of citric acid, 0.5%-1% of benzotriazole and the balance of deionized water; by compounding foaming, foam stabilizing and anti-interference functional components and introducing a microencapsulated foaming agent and hydrophobic nano silicon dioxide, the adaptability and efficiency of the foam scrubbing agent under complex working conditions are remarkably improved, active ingredients can be controllably released by utilizing a temperature-sensitive microcapsule in a high-temperature environment, and the foam scrubbing agent has a good foam scrubbing effect. Block polyether and nano silicon dioxide are combined to form a stable barrier on a gas-liquid interface, so that the damage of condensate oil is effectively resisted, and meanwhile, ethoxylated sulfonate and citric acid cooperate to maintain the stability of the surfactant under high salinity.

The instant disclosure is drawn to cleansing composition comprising: (a) a plurality of anionic surfactants, for example, a combination of one or more acyl isethionates and one or more acyl amino acids; (b) one or more amphoteric surfactants (c) one or more nonionic surfactants; (d) hydroxypropyl guar hydroxypropyltrimonium chloride; (e) one or more cationic polymers other than a cationic guar; and (f) water, wherein (a), (b), and (c) are in an amount totaling about 15 to about 40 wt. % of the composition. The compositions are useful for cleansing hair while providing improved cosmetic properties to the hair.

The invention discloses shell powder-based environment-friendly wall protection slurry as well as a preparation method and application thereof, and belongs to the technical field of wall protection slurry. The environment-friendly wall protection slurry is prepared from the following raw material components: water, xanthan gum, hydroxypropyl guar gum, shell powder, pregelatinized starch and anhydrous sodium carbonate in a mass ratio of 1000: (1.0-2.0): (0.5-1.5): (7.5-15): (3-9): (0.3-0.9). The total mass of the xanthan gum and the hydroxypropyl guar gum is not lower than 0.2% of water and not higher than 3.5% of water. The waste fruit shell powder is recycled and reused as a solid-phase film-forming agent, the used additive is green and non-toxic and can be completely and naturally degraded, the prepared slurry belongs to low-solid-phase polymer slurry, the wall protection performance is excellent, it is ensured that the formula does not contain any difficult-to-degrade component while the filter loss is remarkably reduced, the solid-phase mixing amount is smaller than 1 / 3 of that of bentonite, and the solid-phase film-forming agent has the advantages of being environmentally friendly and free of pollution. The method has the outstanding advantage of cost saving, is suitable for being applied to cast-in-situ bored pile construction, and is particularly suitable for the complex stratum environment of coastal areas.

The present invention relates to the technical field of petrochemical engineering, and discloses a preparation method and application of a temperature-resistant modified carboxymethyl hydroxypropyl guar gum. In the present invention, carboxymethyl hydroxypropyl guar gum, sodium hydroxide, 2-chloro-4-cashew phenol quaternary ammonium salt-6-phenyl-s-triazine, etc. are reacted to obtain the temperature-resistant modified carboxymethyl hydroxypropyl guar gum. In the present invention, quaternary ammonium salt cations are introduced into carboxymethyl hydroxypropyl guar gum, which can form electrostatic interactions with the carboxylate anions of itself, thereby improving the intermolecular chain interaction force between guar gums, which can play a role in increasing viscosity and improving the apparent viscosity. At the same time, alkyl long chains are introduced, and a physical cross-linked network is formed through hydrophobic association, further improving the apparent viscosity. The temperature-resistant modified carboxymethyl hydroxypropyl guar gum of the present invention has the advantages of high apparent viscosity and good thickening effect, and excellent temperature resistance and shear resistance, and has good practical applications in fracturing fluid thickeners.

Cleansing Composition Comprising Hydroxypropyl Guar Hydroxypropyltrimonium Chloride. This disclosure relates to a cleansing composition comprising: (a) a plurality of anionic surfactants, for example, a combination of one or more acyl isethionates and one or more acylaminated acids; (b) one or more amphoteric surfactants; (c) one or more nonionic surfactants; (d) hydroxypropyl guar hydroxypropyltrimonium chloride; (e) one or more cationic polymers other than cationic guar; and (f) water, wherein (a), (b), and (c) are present in an amount totaling approximately 15 to approximately 40% by weight of the composition. The compositions are useful for cleansing hair while providing enhanced cosmetic properties to the hair. Figure for abstract: none

Methods and compositions for treating hair, such as to reduce split ends, seal cracks in hair cuticles, reduces damage to hair, and / or reduce frizziness and / or hair fly-aways. The methods and compositions use a combination of hydroxypropyl guar hydroxypropyltrimonium chloride, Argania spinosa kernel oil, guar hydroxypropyltrimonium chloride, and algin. In some instances, the composition further contains bis-aminopropyl diglycol dimaleate. In some instances, the composition further contains a fructooligosaccharide and / or Beta vulgaris root extract. In some instances, the composition further contains arginine, aspartic acid, glycine, alanine, serine, valine, proline, threonine, isoleucine, histidine, and / or phenylalanine.

The application discloses a kind of fruit shell powder-based environment-friendly wall protection mortar and its preparation method and application, belong to the technical field of wall protection mortar.The environment-friendly wall protection mortar is composed of the following mass ratio of raw material components: water, xanthan gum, hydroxypropyl guar gum, fruit shell powder, pre-gelatinized starch, anhydrous sodium carbonate = 1000:1.0~2.0:0.5~1.5:7.5~15:3~9:0.3~0.9;And the total mass of xanthan gum and hydroxypropyl guar gum is not less than 2 ‰ of water, not more than 3.5 ‰ of water.The application recycles waste fruit shell powder as a solid phase film-forming agent, the additives used are green, non-toxic and completely naturally degradable, the prepared mortar is a low solid polymer mortar, has excellent wall protection performance, significantly reduces the filtration loss, ensures that the formula does not contain any non-degradable ingredients, and the solid phase content is less than 1 / 3 of bentonite, has outstanding cost-saving advantages, is suitable for application in bored pile construction, especially suitable for complex stratum environment in coastal areas.

The invention relates to synthesis and application of high-substitution-degree modified guar gum, and belongs to the technical field of cationic guar gum synthesizing.The synthesis comprises the following steps that S1, guar gum powder or hydroxypropyl guar gum powder serves as a raw material, and a sodium hydroxide solution with the mass being 10-20% of that of the raw material is added; s2, stirring at the temperature of 60-65 DEG C, adding a cationic etherifying agent which accounts for 80-120% of the mass of the raw materials in the stirring process, and reacting for 1-3 hours; s3, after cooling is completed, acid is added for neutralization to be neutral, a product obtained after reaction is directly dried, and the cationic guar gum with the cation substitution degree being 0.6-0.9 is obtained. According to the synthesis and application of the high-substitution-degree modified guar gum, the guar gum synthesized by adopting the synthesis process only needs a small amount of water, the semi-dry method reaction is adopted, washing is not needed, the product is directly prepared in one step, the synthesis cost is relatively low, wastewater is not generated, and the advantages of low synthesis cost and good environment-friendly effect are achieved.

The utility model relates to the technical field of hydroxypropyl guar gum, in particular to a hydroxypropyl guar gum refining reaction kettle which comprises a reaction kettle body, a supporting seat and supporting legs, the supporting seat is arranged at the lower end of the reaction kettle body, the supporting legs are arranged at the lower end of the supporting seat, and a stirring structure is arranged in the reaction kettle body; after the reaction of hydroxypropyl guar gum is completed and the reaction kettle body needs to be cleaned, an external power supply is connected to turn on a water pump, so that the water pump pumps water in a water tank into a spray head, and the spray head sprays the water into the reaction kettle body to clean the inner wall of the reaction kettle body; and dirt, microorganisms and the like remaining in the reaction kettle are removed, so that the influence on the subsequent reaction of the reaction kettle body is prevented, and the quality of the reacted product is prevented from being reduced.

A seed or seedling is coated with underivatized guar, cationic hydroxypropyl guar, polyacrylamide, poly(methacrylic acid), poly(acrylic acid), polyacrylate, poly(ethylene glycol), polyethyleneoxide, poly(vinyl alcohol), polyglycerol, polytetrahydrofuran, polyamide, hydroxypropyl guar, carboxymethyl guar, carboxymethylhydroxypropyl guar, underivatized starch, cationic starch, corn starch, wheat starch, rice starch, potato starch, tapioca, waxy maize, sorghum, waxy sarghum, sago, dextrin, chitin, chitosan, xanthan gum, carageenan gum, gum karaya, gum arabic, pectin, cellulose, hydroxycellulose, hydroxyalkyl cellulose, hydroxyethyl cellulose, carboxymethylhydroxyethyl cellulose, or hydroxypropyl cellulose, the coated seed or seedling having a shelf-life at room temperature in ambient conditions in an unsealed container to at least two months.

The invention discloses a preparation method of calcium hydroxide particles with high specific surface area, which comprises the following steps: (1) placing an aqueous solution of chitosan oligosaccharide in a nitrogen protection atmosphere, heating in a water bath, adding an aqueous solution of polyethyleneimine and glutaraldehyde, and stirring at a constant temperature to obtain an auxiliary agent I; (2) adding an aqueous solution of triethanolamine and hydroxypropyl guar gum into the aid I to obtain a compound aid; and (3) heating the composite additive in a water bath to 70 + / -5 DEG C, preserving heat, then adding calcium oxide powder, carrying out digestion reaction, carrying out solid-liquid separation, washing with ethanol, and drying to obtain the calcium hydroxide particle powder with high specific surface area. The calcium hydroxide particle powder prepared by the method disclosed by the invention has a relatively high specific surface area, so that the calcium hydroxide particles can well meet the requirements on the calcium hydroxide particles in a desulfurization and denitrification process.

The instant disclosure is drawn to cleansing composition comprising: (a) a plurality of anionic surfactants, for example, a combination of one or more acyl isethionates and one or more acyl amino acids; (b) one or more amphoteric surfactants (c) one or more nonionic surfactants; (d) hydroxypropyl guar hydroxypropyltrimonium chloride; (e) one or more cationic polymers other than a cationic guar; and (f) water, wherein (a), (b), and (c) are in an amount totaling about 15 to about 40 wt. % of the composition. The compositions are useful for cleansing hair while providing improved cosmetic properties to the hair.

The present application relates to the field of oilfield chemical technology and discloses a method for increasing the viscosity of a cationic guar gum fracturing fluid. The method comprises adding sulfate to a cationic guar gum fracturing fluid, wherein the guar gum content is 0.3% to 0.7% by mass, and adding 0.1% to 3% sulfate and 0.2% to 0.5% cross-linking agent, with the remainder being water for preparing the fluid. The present application adds sulfate to the cationic guar gum fracturing fluid. The sulfate ions in the sulfate can, through electrostatic attraction, achieve secondary cross-linking of the hydroxypropyl guar gum fracturing fluid cross-linked with the organic cross-linking agent, thereby enhancing its cross-linking density. This is manifested as a significant increase in the viscosity of the fracturing fluid without increasing the concentrations of the guar gum and cross-linking agent. The present application is applied to, for example, low-permeability carbonate reservoirs. While maintaining the same viscosity of the fracturing fluid, the amount of guar gum and cross-linking agent can be reduced, thereby reducing the cost of the fracturing fluid. Furthermore, the reduced amount of guar gum can reduce the residue content of the fracturing fluid after gel breaking, thus having good application prospects.