33results about How to "Shorten saponification time" patented technology

The invention discloses a composite lithium calcium base lubricating grease and a preparation method thereof. Based on the grease weight, the lithium-calcium complex grease includes the following components: 65-95% lubricating base oil, 5-30% lithium-calcium complex thickener, and 0.2-15% graphene. The complex lithium-calcium-based lubricating grease of the invention has excellent performances such as high temperature resistance, water resistance, adhesion, colloid stability, extreme pressure and wear resistance, lubrication life, corrosion resistance and salt spray resistance.

The invention discloses a composite lithium base grease and a preparation method thereof. Based on the weight of the grease, the lithium complex grease includes the following components: 65-95% lubricating base oil, 6-20% lithium complex thickener, and 0.5-15% graphene. The complex lithium-based grease of the present invention has excellent high temperature resistance, water resistance and adhesion, colloidal stability, extreme pressure and wear resistance, lubricating life, corrosion resistance and salt spray resistance.

The invention discloses a polyurea grease, which is characterized in that, based on the weight of the grease, it comprises the following components: 0.2-15% by weight of graphene; 4-30% by weight of polyurea compound; 65-95% by weight % of base oil and 0.5‑15% by weight of additives. The invention also discloses a preparation method of the polyurea grease and the prepared polyurea grease. The polyurea grease of the present invention not only has excellent corrosion resistance and salt spray resistance, but also has excellent properties such as high temperature resistance, water resistance, adhesion, colloid stability, extreme pressure and anti-wear properties, and Long lubrication life. The preparation process of the lubricating grease of the invention is simple, environment-friendly, low in cost and stable in product quality.

The invention is a starch-based high water absorptivity resin preparing method, using starch, acrylic nitricle (AN), and 2-acrylamide-2-methyl prophyl sulfonic acid (AMPS) as raw materials, adopting [Mn(H2P2O7)3]3- as initiator, making graft polymerization and saponification, and fast synthesizing starch-based high water absorptivity resin. It makes graft copolymerization on starch and two kinds of monomer raw materials, making them form multielement compound, the initiator is cheap and the modified process can omit medium washing step and AMPS group is added to be able to obviously shorten the synthesis process and time of the final product, reduce production cost and simultaneously also be able to improve the water-absorbing performance of the final product.

The invention discloses a lithium-based lubricating grease and a preparation method thereof, which is characterized in that, based on the weight of the lubricating grease, it comprises the following components: 65-95% lubricating base oil, 6-20% lithium-based thickener , 0.5‑15% graphene. The lithium-based lubricating grease of the invention has excellent properties such as high temperature resistance, water resistance, adhesion, colloid stability, extreme pressure and wear resistance, lubrication life, corrosion resistance and salt spray resistance.

The invention belongs to the field of plant purification, and provides a method for extracting lutein from marigolds. The method includes the following steps: (1) adding dry marigold powder and organic solvents into an extraction container for stirring and extracting; (2) filtering the mixture in the extraction container, collecting filtrate, and subjecting the filtrate to decompressed concentration to obtain a lutein ointment; (3) adding a potassium hydroxide ethanol solution and high-temperature alkaline lipases into the lutein ointment, and after stirring and dissolving, transferring the lutein ointment into a reactor for saponification; (4) standing saponification liquid at a low temperature to precipitate out lutein crystals, performing filtration, washing filter cakes by distilled water, and drying the filter cakes to obtain the high-purity lutein crystals, wherein the purity of the lutein in the final products ranges from 70% to 90%. The method has the advantages that the problems of complicated extraction process, high solvent toxicity and low product purity of existing lutein are solved; the method has a simple process, high operability and high product purity, and is suitable for industrial mass production.

The invention provides a graphene composite lubricating grease and a preparation method thereof. The invention uses base oil, graphene, high molecular acid, calcium hydroxide, low molecular acid, lithium hydroxide, etc. as raw materials, and undergoes two saponification reactions. A lubricating grease is obtained, the base oil and the graphene are equally divided into two feeds, and the product has good colloidal stability, high dropping point, excellent anti-friction performance and anti-oxidation performance.

The invention discloses a production technology of octacosanol. Raw bran wax is sequentially subjected to saponifying, cleaning, dehydrating, drying, smashing, extracting, filtering and desolventizing to obtain fatty alcohol, and vacuum rectification is carried out to obtain the octacosanol. By adopting the production technology of octacosanol, reaction can be sped up, production efficiency is improved, and yield and content of the octacosanol are also increased.

The invention provides a collector for sorting monazite and ilmenite and its use method. The collector includes 10-15 parts of tall oil, 25-35 parts of oxidized paraffin soap, and 40-50 parts of palm oil. 10-15 parts of sodium fatty acid methyl ester sulfonate, 10-15 parts of sodium hydroxide; microwave pretreatment of tall oil, oxidized paraffin soap, palm oil and sodium fatty acid methyl ester sulfonate, and then 70-85 ℃ Mix and stir; then add sodium hydroxide and mix at 85-100°C to obtain the collector. The invention adopts a novel microwave pre-activated pretreatment method on the equipment, which replaces the direct reactor reaction, reduces the saponification time, reduces the production cost, and has better harvesting effect. Using the collector of the present invention can improve the comprehensive grade P of monazite concentrate to more than 10.29%, the operational recovery rate P can be raised to more than 88.03%, and the comprehensive grade P of ilmenite ore TiO 2 Increase to more than 50.00%, operating recovery rate TiO 2 Increase to more than 96.22%, has very good economic benefits.

The invention discloses a composite calcium-based lubricating grease and a preparation method thereof. Based on the grease weight, the complex calcium-based grease includes the following components: 65-95% lubricating base oil, 6-20% complex calcium-based thickener, and 0.2-15% graphene. The composite calcium-based lubricating grease of the invention has excellent properties such as high temperature resistance, water resistance, adhesion, colloid stability, extreme pressure and wear resistance, lubrication life, corrosion resistance and salt spray resistance.

The invention relates to a method for preparing grafted modified starch. The method comprises the following steps of: (1) preparing starch milk from the common starch and then performing acidification for 1.5 to 2.5 hours; (2) introducing nitrogen into the acidified starch milk to remove oxygen from a system and then adding dihydrogen manganese pyrophosphate and grafted monomers of acrylic acid, methyl acrylate, ethyl acrylate and vinyl acetate sequentially to perform a graft copolymerization reaction; (3) adding sodium hydroxide and sodium hypochlorite into the starch copolymer to perform saponification aftertreatment; and (4) neutralizing by adding sulfuric acid until the pH value is 6 and 8, and then performing dehydration, drying, pulverization, sieving, packaging and metering to obtain the grafted modified starch finished product. The method has the advantages that: the properties of the grafted modified starch are stable; the process operation is simple; and chemicals used in the modifying process have low price and convenient and readily available source. The grafted modified starch product has the advantages of meeting a starching requirement, effectively reducing the costof sizing agents and reducing pollution of PVA to ecological environment, along with excellent properties, stable quality and lower price.

The invention discloses an anhydrous calcium-based lubricating grease and a preparation method thereof. Based on the grease weight, the anhydrous calcium-based grease includes the following components: 60-90% lubricating base oil, 5-30% anhydrous calcium-based thickener, and 0.2-15% graphene. The anhydrous calcium-based lubricating grease of the present invention has excellent properties such as high temperature resistance, water resistance, adhesion, colloid stability, extreme pressure and wear resistance, lubrication life, corrosion resistance and salt spray resistance.

The invention relates to the field of handmade soap, and particularly relates to handmade soap with a shortened saponification time and a preparation method thereof. The handmade soap is prepared by the following steps: proportioning base oil, an amino acid salt and distilled water according to a certain ratio, carrying out mixing, then carrying out a saponification reaction, and after the saponification is mature, adding a certain proportion of additives to prepare the handmade soap. The handmade soap comprises the following components in percentage by weight: 60%-75% of the base oil, 5%-20% of the amino acid salt, 10%-20% of distilled water and 0.5%-5% of the additives. According to the scheme, the amino acid salt is used for replacing a conventional strong base for a saponification process of grease, and the used amino acid salt can be directly purchased in the market, and can also be prepared by separately carrying out reactions on amino acid with lithium hydroxide, sodium hydroxide and potassium hydroxide. The material source is wide, alkalinity is adjustable, and biocompatibility is good.

The invention provides a mineral processing process for sorting garnet and rutile based on composite flotation reagents, comprising the steps of: (1) preparing a composite garnet collector: including 20-25 parts of tall oil and 30-35 parts of oxidized paraffin wax soap , 20-30 parts of palm oil and 12-18 parts of sodium fatty acid methyl ester sulfonate; saponification reaction after microwave pre-activation; It is water glass, the activator is copper sulfate, the flotation concentration is 45-55%, and the garnet rough concentrate and rutile concentrate are obtained; (3) selection flotation: the dosage of garnet composite collector is 85-95 / t , the inhibitor is water glass, the activator is copper sulfate, the flotation concentration is 35-40%, and the garnet concentrate and rutile medium ore are obtained. The invention realizes the positive flotation separation of garnet and rutile, simultaneously improves the grade and recovery rate of rutile concentrate and garnet concentrate, and has simpler process steps.

The present invention provides a kind of ore dressing process and application of using composite collector to separate monazite and rutile, said ore beneficiation process includes the following steps: (1) by weight, 10 to 15 parts of tall oil, 25 parts of oxidized paraffin wax soap ~35 parts, palm oil 40~50 parts, sodium fatty acid methyl ester sulfonate 10~15 parts, microwave preactivation 5~10min; Saponification for 1.5 to 2.5 hours to obtain the target collector; (2) Take the rutile crude concentrate raw material, add the above-mentioned collector, inhibitor, activator, and foaming agent, and perform the first flotation to obtain monazite Coarse concentrate and tailings; (3) add monazite coarse concentrate to the above-mentioned collector, inhibitor, activator, foaming agent, and carry out the second flotation to obtain monazite concentrate and tailings, the tailings The mine is rutile concentrate. The beneficiation process of the invention effectively separates the rutile rough concentrate to obtain monazite concentrate products and rutile concentrate products with high quality and is environmentally friendly.

The invention discloses a composite sodium-based lubricating grease and a preparation method thereof. Based on the grease weight, the complex sodium-based grease includes the following components: 65-95% lubricating base oil, 5-30% complex sodium-based thickener, and 0.2-15% graphene. The composite sodium-based lubricating grease of the present invention has excellent properties such as high temperature resistance, water resistance, adhesion, colloid stability, extreme pressure and wear resistance, lubrication life, corrosion resistance and salt spray resistance.

The invention provides a collector for sorting garnet and ilmenite and a flotation process thereof. The collector includes the following raw materials in parts by weight: 10-15 parts of tall oil, 25-35 parts of oxidized paraffin wax soap, 40-50 parts of palm oil, 10-15 parts of sodium fatty acid methyl ester sulfonate, 10-15 parts of sodium hydroxide, the collector of the present invention carries out the flotation of garnet and ilmenite, and has strong selectivity and Harvesting performance, improving the harvesting effect, reducing the amount of harvesting, good stability, fast flotation speed, comprehensively improving the grade of garnet, reducing the impurity content in concentrate products, and recovering garnet concentrate The yield has increased by 10-20%, and the grade of garnet has increased by 10-20%, which has good economic benefits.