52 results about "Sodium polyaspartate" patented technology

The invention discloses a growth regulator for promoting colonization of plant rhizosphere microorganisms and application of the growth regulator to crops, a preparation method of the growth regulator comprises the following steps: S1, dropwise adding an aqueous solution of modified chitosan and a compound bacteria solution into a saturated boric acid solution of 1-2% calcium chloride, crosslinking and curing for 3-4 hours, washing with sterile water for 3-5 times, and drying to obtain the growth regulator for promoting colonization of the plant rhizosphere microorganisms; immobilized microorganisms are obtained; s2, sequentially adding nanocellulose crystals, sodium polyaspartate and organic fertilizer into the enteromorpha extracting solution, uniformly stirring and mixing, adding immobilized microorganisms, uniformly mixing, granulating, coating with modified chitosan, and drying to obtain the growth regulator. Through step-by-step design of microorganism immobilization, nutrition compounding and chitosan coating, function integration of microorganism protection, nutrition release and environmental response is achieved, the colonization efficiency of rhizosphere microorganisms is remarkably improved, the soil microenvironment is improved, and finally comprehensive improvement of plant growth and stress resistance is achieved; and the method has relatively high social use value and application prospect.

The invention relates to a corrosion and scale inhibitor for TRT and a preparation method of the corrosion and scale inhibitor, and relates to the technical field of chemical reagents. The corrosion and scale inhibitor is prepared from the following components in percentage by mass: 15 to 20 percent of morpholine, 25 to 30 percent of aminoethyl ethanolamine, 15 to 20 percent of 1-hydroxyethyl-2-undecylimidazoline onium salt, 12 to 18 percent of sodium polyaspartate, 8 to 12 percent of itaconic acid-allylsulfonic acid copolymer, 1 to 3 percent of alkyl glycoside and the balance of a mixture of water and glycerol in a mass ratio of 1 to (1 to 3). The corrosion and scale inhibitor disclosed by the invention can synchronously inhibit corrosion of an acid medium and scale deposition of salts such as NH4Cl and the like, and the corrosion inhibition rate and the scale inhibition rate are effectively improved.

The invention relates to the technical field of cleaning agents, and discloses a biodegradable environment-friendly cleaning agent, which comprises: a composite surfactant system comprising at least one nonionic surfactant, an ampholytic surfactant and a chelating functional surfactant; the plant extract oil system comprises limonene and a eucalyptus oil mixture; the functional particle system comprises nanoscale enzyme microcapsules and slow-release type oxidized particles; the natural polysaccharide stable network system comprises at least two polysaccharide thickeners and a bio-based cross-linking agent, and the assistant system comprises a metal ion chelating agent, a buffer acid system and water. By introducing sodium polyaspartate as a green chelating surfactant, efficient chelating of calcium and magnesium ions under a hard water condition is realized, the cleaning power is remarkably improved, water stain residues are reduced, and the cleaning performance with wider adaptability is obtained.

The invention belongs to the technical field of agricultural fertilizers, and particularly relates to a cold-resistant feather amino acid leaf fertilizer and a preparation method thereof.The cold-resistant feather amino acid leaf fertilizer is prepared from, by mass, 86%-95% of feather source amino acid-oligopeptide mixed liquor, 3%-8% of L-lysine, 1%-3% of chelated microelements, 0.5%-1.0% of trehalose, 0.5%-1.2% of polyether modified trisiloxane, 0.5%-1.0% of sodium polyaspartate and 0.1%-0.5% of preservative, wherein the pH (Potential of Hydrogen) value is 5.0 to 6.5; the chelated trace elements are EDTA (Ethylene Diamine Tetraacetic Acid) or amino acid chelates of at least three elements of zinc, iron, manganese, copper and boron. By optimizing a feather pretreatment process and a multi-enzyme synergistic system design and combining functional component compounding, the hydrolysis efficiency and the product activity are remarkably improved, and meanwhile, the permeability and the nutrient transfer effect of the foliar fertilizer under a low-temperature condition are enhanced.

The invention relates to the technical field of air purifying materials, in particular to a negative oxygen ion air purifying agent and a preparation method thereof.The negative oxygen ion air purifying agent is prepared from ethyl cellulose, hydroxyethyl acrylate, citric acid activated bentonite, beta-cyclodextrine, neodymium-doped tourmaline powder, modified plant essential oil, propylene glycol and carboxymethylcellulose. Sodium polyaspartate and a pH buffer agent. According to the invention, through a triple technology of terpene-free essential oil selection, metal ion modification and beta-cyclodextrin coating, the problem of negative ion consumption of traditional essential oil is avoided, and the release amount and durability of negative oxygen ions are remarkably improved through a catalytic synergistic effect.

The invention discloses a preparation method of a high-compatibility organic silicon softening agent. Comprising the following steps: a, reacting hydroxyl silicone oil with bio-based fatty acid ester under the protection of nitrogen by taking sodium methoxide as a catalyst to obtain an organic phase product; and b, adding nano silicon dioxide into the product obtained in the step a, uniformly dispersing under the assistance of ultrasonic waves, adding polyether amine and water, carrying out high-speed shearing emulsification to form a microemulsion, adding sodium polyaspartate, and uniformly mixing to obtain the high-compatibility organic silicon softening agent. Effective preparation of the high-performance and high-compatibility fabric softener is realized, and production requirements are met.

Since it separates into at least an emulsion layer and an aqueous layer during standing, it has excellent aesthetic properties. When used, it can be uniformly redispersed by gently shaking, so it also has excellent usability. In addition, it has good storage stability, and further provides a multi-layer cosmetic excellent in the softness of the back skin. 【Means for Solving the Problem】 The following components (A) to (G): (A) Phospholipid (B) Cholesterol and / or phytosterol (C) Phosphoric acid-based surfactant (D) Oil agent (E) Sodium polyaspartate (F) Water-swelling clay mineral (G) Water A multi-layer cosmetic containing the above components.

The invention provides a copper electroplating solution, a preparation method and application thereof, a solar cell and a photovoltaic module, and relates to the technical field of solar cells. The copper electroplating liquid comprises a copper ion source, a main complexing agent, an auxiliary complexing agent, conductive salt, a functional additive and water, wherein the functional additive is prepared from a 2-mercapto benzimidazole-zinc complex, L-ascorbic acid, 3-mercapto-1-sodium propanesulfonate, sodium polyaspartate and water. The copper electroplating solution is free of corrosion to a silicon substrate and a passivation layer, the structural integrity of a battery is guaranteed, efficient deposition of a compact and low-resistance copper layer is achieved through the synergistic effect of a double-complexing system and a functional additive, and the conductivity and the interface bonding force are improved; meanwhile, the formed chemical bonding interface enhances the copper-silver adhesion, the electrical property and long-term reliability of the cell are remarkably improved, and the method is suitable for large-scale manufacturing of the high-performance back contact solar cell.

The invention provides a dry powder coating for exterior walls and a preparation and construction method thereof, and belongs to the technical field of building coatings. The coating is prepared from calcium aluminum borosilicate cement powder, boron nitride nanosheets, rare earth cerium doped titanium dioxide, volcanic ash microspheres, a potassium magnesium phosphate exciting agent, a bio-based sodium polyaspartate dispersing agent and a modified hectorite thixotropic agent. The high-amorphous-phase cement powder is prepared through a melting-quenching method, and the compressive strength, the acid corrosion resistance and the photocatalytic efficiency are remarkably improved. The volcanic ash microbeads are hydrophobically modified to reduce the density, and are matched with the potassium magnesium phosphate activator to optimize the pore structure, so that the freeze-thaw resistance is remarkably improved. The synergistic effect of the bio-based dispersing agent and CTAB modified hectorite is adopted, and high dispersion of the nano material and high thixotropy of the slurry are achieved. During construction, a multifunctional coating is formed through two-stage spraying and ultraviolet light catalytic activation. The high-strength self-cleaning light-weight building external wall protection material has the characteristics of high strength, self-cleaning, light weight and environmental protection, and is suitable for high-durability building external wall protection.

The invention relates to the technical field of copper foil processing, in particular to an ultra-thick rolled copper foil with low roughness and high peel strength and a preparation method thereof. The quaternary composite additive composed of L-ascorbic acid, nanocellulose, trisodium citrate and sodium polyaspartate is introduced into the roughening liquid and the curing liquid, gradient pulse electroplating is combined, the surface roughness Rz of the obtained copper foil is smaller than or equal to 1.2 micrometers, the peel strength is larger than or equal to 1.5 N / mm, and the electroplating liquid is free of cyanide and heavy metal pollution. Through the synergistic effect of additive molecules and process optimization, the contradiction between low roughness and high stripping resistance is solved, and the method is suitable for the high-end fields of 5G high-frequency substrates, new energy automobile battery current collectors and the like.

The invention relates to the technical field of agricultural environment restoration and plant nutrition regulation and control, in particular to a passivation culture solution for rice cadmium reduction and a preparation method of the passivation culture solution. The culture solution is composed of a ferric citrate complexing solution, a sodium polyaspartate graft, potassium dihydrogen phosphate, a choline-stabilized orthosilicic acid mother solution and a zinc ethylenediamine tetraacetate disodium salt hydrate. In the preparation process, a stable system is cooperatively constructed through multi-coordination complexing, electrostatic regulation and an organic framework stabilization mechanism. The culture solution still keeps good dispersity and stability under acidic and hard water conditions, can form a weak-acid-to-neutral buffer area in rice rhizosphere, effectively reduces migration and absorption of cadmium ions, maintains availability of nutrient elements such as iron and zinc, remarkably reduces the cadmium content of rice grains, improves the nutritional quality and environmental adaptability of crops, and has a wide application prospect. The method is suitable for efficient and safe treatment of cadmium-polluted rice fields.

The application discloses a molybdenite inhibitor APASP and application and a beneficiation method, and the molybdenite inhibitor APASP comprises polyaspartic acid sodium and concentrated hydrochloric acid, and the mass ratio is (5-10):1; when used, two components are respectively configured as aqueous solutions, the mass concentration of the polyaspartic acid sodium aqueous solution is 0.5%-2.5%, the mass concentration of the HCl aqueous solution is 1.0%-5.0%, and the two aqueous solutions are mixed according to the mass ratio (2.5-10):(1-2.5) to obtain the molybdenite inhibitor APASP. The polyaspartic acid sodium is acidified to obtain the molybdenite inhibitor APASP, the molybdenite can be selectively inhibited according to the existing form of the APASP in the ore pulp, and the talc is not affected. The application can improve the beneficiation difficulty of high-talc molybdenum ore, effectively improve the recovery of molybdenum, and has the inhibiting capacity, high selectivity and strong chelating capacity compared with the existing inhibitors, has a large application prospect, and has the scale inhibition capacity, can effectively reduce the equipment scaling, is an excellent green water treatment agent, and can prevent the secondary pollution of water bodies.

The application discloses a kind of polystrontium aspartate / potassium and its preparation method and application, belong to daily chemical technical field.The polystrontium aspartate / potassium using poly succinimide can be prepared in the aqueous solution of strontium hydroxide and potassium hydroxide hydrolysis.The preparation process has the characteristics of mild conditions, simple process, low cost, high efficiency and environmental protection.The polystrontium aspartate / potassium provided by the application is used for whitening and anti-allergic toothpaste, has the dual effect of moisturizing and whitening and anti-allergic, compared with adding poly sodium aspartate and potassium chloride, strontium chloride respectively, the use of polystrontium aspartate / potassium eliminates a large number of sodium ions and chloride ions, effectively reduces the ion concentration in formula, reduces formula difficulty.

The invention relates to the technical field of water-based coatings, and discloses a food-grade water-based coating with skid resistance, wear resistance and stain resistance and application of the food-grade water-based coating in a water cup, and the food-grade water-based coating comprises a coating composition and oxidized starch for curing, the coating composition comprises a solvent, a hydrophilic response component, an ion response component, a film-forming main body and a cross-linking agent, the oxidized starch is prepared by reacting starch with an oxidizing agent. According to the anti-skid coating, the components of carboxymethyl chitosan and polyaspartic acid sodium salt are cooperated, and a coating preparation process of step-by-step dissolution and stirring at a specific rotating speed is matched, so that environmental adaptability anti-skid is realized. Carboxymethyl chitosan absorbs water in a moist environment to generate conformational rearrangement and expose polar groups, polyaspartic acid sodium salt is affected by ions in an electrolyte environment to cause molecular chain curl, the friction performance of the coating in dry, moist and electrolyte environments can be adjusted according to needs through linkage of carboxymethyl chitosan and polyaspartic acid sodium salt, and meanwhile, the components are uniformly dispersed to guarantee response stability. The inherent contradiction between skid resistance and easy cleaning is solved.

The invention relates to a high-absorptivity glycoside compound synergistic water-soluble fertilizer and a preparation method thereof. The water-soluble fertilizer comprises the following components in parts by weight: a nitrogen source, a phosphorus source, a potassium source, chelated trace elements, a water-soluble organic matter, an auxiliary agent, a structure stabilizer and an absorption promoting component, the absorption promoting component is composed of a cyclodextrin inclusion glycoside compound, sodium alginate oligosaccharide and sodium polyaspartate, and the structure stabilizer is chitosan quaternary ammonium salt. The glycoside compound is clathrated by cyclodextrin, so that the stability and the availability of the glycoside compound in a water-soluble system are improved, and the polysaccharide oligomer and the polyamino acid substance are combined to synergistically promote root system absorption and in-vivo transport. Through step-by-step preparation of the absorption promotion mother liquor and the nutritive salt mother liquor and compounding modulation, uniform dispersion of the components and stability of the system are realized. Test results show that the water-soluble fertilizer can improve the accumulation level of glycoside targets in plants and synchronously promote mineral nutrition absorption and yield and quality improvement, and is suitable for water-fertilizer integrated application of various crops.

The application provides a dry powder paint for outer wall and a preparation and construction method thereof, and belongs to the technical field of building paint. The paint is composed of calcium aluminum borosilicate cement powder, boron nitride nanosheet, rare earth cerium doped titanium dioxide, volcanic ash microbead, magnesium potassium phosphate activator, bio-based polyaspartic acid sodium dispersant and modified hectorite thixotropic agent. The high amorphous cement powder is prepared by a melting-quenching method, which significantly improves the compressive strength, acid corrosion resistance and photocatalytic efficiency. The density of the volcanic ash microbead is reduced after hydrophobic modification, and the pore structure is optimized by cooperating with the magnesium potassium phosphate activator, so that the freeze-thaw resistance is significantly improved. The bio-based dispersant and the CTAB modified hectorite are used in a synergistic manner to realize high dispersion of the nanomaterial and high thixotropy of the slurry. During construction, two-stage spraying and ultraviolet photocatalytic activation are used to form a multifunctional coating. The application has the characteristics of high strength, self-cleaning, lightweight and environmental protection, and is suitable for high durability building outer wall protection.

The invention relates to the technical field of fertilizers, and particularly discloses an amino acid water-soluble fertilizer. The amino acid water-soluble fertilizer is prepared from the following raw materials in parts by weight: 40 to 60 parts of compound amino acid, 6 to 10 parts of nitrogen-phosphorus-potassium fertilizer, 3 to 8 parts of seaweed extract, 4 to 8 parts of calcium lignosulphonate, 2 to 5 parts of humic acid, 8 to 13 parts of bamboo charcoal powder and 1 to 3 parts of sodium polyaspartate. The compound amino acid consists of lysine, arginine and glycine in a mass ratio of 1: (2-6): (3-7); the amino acid water-soluble fertilizer is simple in formula and strict in proportion, all the components interact, and the obtained amino acid water-soluble fertilizer can provide rich and comprehensive nutritional ingredients, is beneficial to improving the nutrient absorption efficiency of crops and promoting crop growth and has wide market prospects.

The invention relates to a semi-water-based cleaning agent for cleaning solder paste on the surface of a steel mesh. The cleaning agent disclosed by the invention contains one or more organic solvents of an alcohol ether solvent and olefin with a special structure; the surfactant is at least one of fatty alcohol polyoxyethylene ether, fatty acid dihydroxy amide and derivatives thereof, and polyoxyethylene sorbitan fatty acid ester; the dispersing chelating agent is at least one of sodium polyacrylate, sodium polyaspartate (PASP), maleic acid-acrylic acid copolymer sodium salt and the like; and the corrosion inhibitor is at least one of triethanolamine, sodium molybdate, tribasic acid, undecanedioic acid and the like. Through unique components and a high-efficiency cleaning mechanism, steel mesh solder paste residues are thoroughly removed, and meanwhile a base material cannot be corroded.

The invention discloses a preparation method and application of polyaspartic acid chelated zinc, which comprises: dissolving sodium hydroxide or potassium hydroxide in deionized water, dripping ammonia water and fully mixing, adding polysuccinimide, stirring and dissolving, and filtering to obtain a sodium polyaspartic acid / ammonium copolymer or a potassium polyaspartic acid / ammonium copolymer aqueous solution; using an inorganic acid aqueous solution to adjust the pH of the sodium polyaspartic acid / ammonium copolymer aqueous solution or the potassium polyaspartic acid / ammonium copolymer aqueous solution to 4.5-6.5, adding a water-soluble zinc salt, and continuously and fully stirring in a water bath to obtain a product solution; removing soluble impurities in the product solution to obtain a final product polyaspartic acid chelated zinc aqueous solution. The polyaspartic acid chelated zinc prepared by the method has a high zinc chelation rate, few free zinc ions, mild reaction conditions, and a simple method.

The invention discloses a sustained-release microcapsule and a preparation method thereof, a faucet material and an electroplated plastic faucet, the sustained-release microcapsule comprises a capsule core and a capsule wall, the capsule core is a scale inhibitor and / or an antibacterial agent, the scale inhibitor is one or two of sodium polyepoxysuccinate and sodium polyaspartate, the antibacterial agent is a quaternary ammonium salt antibacterial agent with an alkyl chain containing 12-20 carbons, and the capsule wall is one or two of sodium polyepoxysuccinate and sodium polyaspartate. The capsule wall is made of a composite material of hydroxylated polyhedral oligomeric silsesquioxane POSS-OH and polyvinyl alcohol. The scale inhibitor and the antibacterial agent are enveloped by utilizing a cage-shaped cavity structure of the polyhedral oligomeric silsesquioxane, and after enveloping, the scale inhibitor and the antibacterial agent are both firmly enveloped in a cavity of the polyhedral oligomeric silsesquioxane, so that the high temperature resistance and the water-soluble disintegration resistance of the scale inhibitor and the antibacterial agent are improved, the scale inhibitor and the antibacterial agent can be slowly released outwards in different use scenes, and the scale inhibitor and the antibacterial agent can be used for preparing the scale inhibitor and the antibacterial agent. The long-term anti-scale and anti-bacterial functions are achieved.

The invention discloses a water-based low-corrosion automobile windshield washer fluid and a preparation method thereof, and belongs to the technical field of automobile windshield washer fluid preparation. The formula of the water-based low-corrosion automobile windshield washer fluid comprises the following components in percentage by weight: 5 to 15 parts of ethanol, 1 to 10 parts of a nonionic surfactant, 2 to 20 parts of an anionic surfactant, 0.1 to 5 parts of sodium polyaspartate, 0.2 to 10 parts of a preservative and the balance of deionized water. The pH value of the prepared automobile windshield washer fluid is close to neutral, the corrosion speed on metal, rubber, plastic and the like of automobiles can be reduced, and the automobile windshield washer fluid is high in cleaning capacity and stability and has a good application prospect.

The invention relates to a fluffy and oil-control hair composition and application thereof. The hair composition comprises sodium polyaspartate, zinc pyrrolidone carboxylate, a yeast / zinc fermentation product, pyridoxine hydrochloride, panthenol and a plant extract. The plant extract comprises any one or a combination of at least two of fructus forsythiae fruit extract, pueraria mirifica extract or rhizoma anemarrhenae root extract. By compounding a plurality of active components, the shampoo can play a synergistic role, can adjust the scalp environment from multiple dimensions, and has the effects of cleaning, controlling oil and improving the fluffiness of hair.

The invention provides a polypeptide-containing skin care composition as well as a preparation method and application thereof. The skin care composition comprises polypeptide, an acrylic acid (ester) / stearyl alcohol polyether-20 methacrylate copolymer, arginine, sodium hyaluronate, sodium polyaspartate, phosphatidylcholine and polyol. The polypeptide is a combination of pentapeptide-48, nonapeptide-1 and carnosine. The invention creatively finds that the three polypeptides, namely pentapeptide-48, nonapeptide-1 and carnosine, can interact and positively influence each other after being combined, and have a synergistic interaction effect in the aspects of whitening, aging resistance and oxidation resistance; the composition is added into a system containing an acrylic acid (ester) / stearyl alcohol polyether-20 methacrylate copolymer, arginine, sodium hyaluronate, sodium polyaspartate and phosphatidylcholine, and a proper amount of polyol is added to enhance the stability of the system, so that the composition has excellent moisturizing, soothing, tightening, anti-wrinkle and skin brightening effects.

The application discloses a high water-soluble amoxicillin soluble powder and a preparation method thereof. The application belongs to the technical field of veterinary drug preparations. The application adopts supercritical CO2 eutectic of amoxicillin trihydrate and L-malic acid, and is matched with gas explosion modified starch, hydrophobic nano-SiO2 and polyaspartic acid sodium. The supercritical eutectic and the gas explosion modified starch are combined to make the powder have super-high solubility; the PASP competitively combines metal ions, and the nano-SiO2 synergistically adsorbs metal ions to improve the hard water stability of the powder; the eutectic hydrogen bond protection and the nitrogen filling packaging make the L-malic acid hydrogen bond stabilize the beta-lactam ring, the nitrogen environment inhibits oxidation to improve long-term stability and reduce the degradation rate; the high-pressure homogenization microspheres and the spray drying porous structure improve the water penetration and the rapid dissolution performance of the powder, and provide technical support for the preparation of the high water-soluble stable amoxicillin powder.

The invention belongs to the technical field of magnesium phosphate cement materials, and particularly discloses a reinforced magnesium phosphate cement material with highly uniformly dispersed fibers, which comprises the following components: 42-60 parts by weight of magnesium phosphate cement, 3-5 parts by weight of a retarder, 1-1.6 parts by weight of fibers, 0.32-1.0 part by weight of an accelerant, 30-40 parts by weight of fine aggregate, and 8-13 parts by weight of mixing water. Wherein the accelerant is prepared from sodium polyaspartate, pectin, alkyl silane and chitosan. Under the combined action of the accelerant and the fibers, the dispersing state and orientation of the fibers in the cement are effectively improved, the breaking strength and compressive strength of the material are remarkably improved, and meanwhile the good construction performance of the material is kept.

The invention provides a preparation method of a carboxymethylated bamboo powder multifunctional intelligent response hydrogel material, which comprises the following steps: step 1, mixing and stirring bamboo powder, isopropanol and a NaOH solution, then adding chloroacetic acid and stirring, then heating for reaction, and after the reaction is finished, filtering, washing and drying to obtain carboxymethylated bamboo powder; 2, water is added to the carboxymethylated bamboo powder for dissolution, then neutralized acrylic acid, sodium polyaspartate and methacryloylethyl sulfobetaine are added, the mixture is stirred and mixed to be uniform, finally, a cross-linking agent and an initiator are added, a reaction is carried out in the nitrogen atmosphere, washing and drying are carried out after the reaction is finished, and the target compound is obtained. The hydrogel material is the carboxymethylated bamboo powder multifunctional intelligent response hydrogel material. The prepared hydrogel can efficiently absorb and maintain moisture, the maximum water absorption capacity in pure water can reach 926.9 g / g, the hydrogel has responsiveness to pH, the moisture absorption capacity in a salt solution is maintained, and the hydrogel has good application prospects.

The present application relates to a kind of corrosion and scale inhibitor for TRT and its preparation method, it is related to chemical reagent technical field, wherein, by mass percentage content, the corrosion and scale inhibitor includes: morpholine 15-20%, aminoethyl ethanolamine 25-30%, 1-hydroxyethyl-2-undecyl imidazolinium salt 15-20%, polyaspartic acid sodium 12-18%, itaconic acid-acrylic sulfonic acid copolymer 8-12%, alkyl glycoside 1-3%, the rest is the mixture of water and glycerol with mass ratio 1:1-3.It is synchronous to inhibit acid medium corrosion and NH4Cl and other salt deposits, effectively improve the corrosion rate and scale inhibition rate.

The invention relates to the technical field of cosmetics, in particular to a quick-drying tearable lip line and a preparation method thereof. The lip line comprises the following components in parts by weight: cosmetic-grade purified water; polyvinyl alcohol; vP / VA copolymer / water / glyceryl acrylate / acrylic copolymer; cI 15985, CI 15985; cI 17200, CI 17200; and PEG (Polyethylene Glycol)-40 stearate. And polysorbate-20, polysorbate-20. And PEG-40 hydrogenated castor oil; glycerol; butanediol; sodium hyaluronate; tocopheryl acetate; silica; silica dimethyl silylate; 4-hydroxyacetophenone; and sodium polyaspartate. The quick-drying tearable lip line provided by the invention has relatively good tearing smoothness, drying efficiency, skin feeling mildness and color development durability.

The invention provides a synthetic method of cosmetic-grade polyaspartate, and relates to the field of cosmetic additives, polysuccinimide is used as a raw material, water is added into the raw material, and reaction conditions are controlled to enable the polysuccinimide to be subjected to hydrolysis reaction to obtain a polyaspartic acid solution; cooling the polyaspartic acid solution while stirring for crystallization, filtering, cleaning and drying to obtain white crystals; adding water and sodium hydroxide into the crystal to prepare a sodium polyaspartate solution with the pH value of 6-8, and performing spray drying to obtain a final product, namely white cosmetic-grade sodium polyaspartate powder; according to the invention, white cosmetic-grade polyaspartate can be prepared, the use of organic solvents in the process can be avoided, and the process method is simpler and more environment-friendly.

The invention belongs to the field of preparation of high molecular polymers and discloses a production process for preparing polyaspartic acid based on solid superacid, comprising: using aspartic acid as a raw material, using solid superacid SO4 with a particle size of more than 80 meshes 2‑ / ZrO2-Al2O3 as a catalyst, react under vacuum and high temperature conditions to obtain a polymerization product, crush the polymerization product and screen the particles with a particle size of less than 100 mesh to obtain polysuccinimide, and then put it into an aqueous solution of sodium hydroxide or potassium hydroxide for hydrolysis to obtain a sodium polyaspartate or potassium polyaspartate aqueous solution; filter or electrodialyze the sodium polyaspartate or potassium polyaspartate aqueous solution, and then sterilize and dry to obtain polyaspartic acid. The method uses solid superacid SO4 2‑ / ZrO2‑Al2O3 is used as a catalyst, which saves water resource consumption, simplifies the process route, avoids the treatment process of washing acidic wastewater, and has high catalytic efficiency.