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 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 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 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.