Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

55results about How to "Low iodine value" patented technology

Method for separating and extracting isostearic acid from monomer acid

The present invention discloses a method for separating and extracting isostearic acid from monomer acid. The present invention relates to a method for separating and extracting isostearic acid, in particular to a novel method for separating and extracting isostearic acid from monomer acid. The present invention provides a method for separating and extracting isostearic acid from monomer acid, which is suitable for use in commercial production. The method is characterized in: esterify the byproduct (monomer acid) obtain in production of dimer acid through bleaching earth catalytication process under medium pressure without catalyst to obtain monomer acid ester, treat by catalytic hydrogenation under medium pressure, and filter to obtain hydrogenised monomer acid ester; envelope with carbamide, filter, separate, and wash with water to obtain crude product of isostearic acid ester; perform molecular distillation to obtain refined isostearic acid ester, and then perform hydrolysis to obtain isostearic acid. Compared to the separation and extraction technique in the prior art, the present invention has the following advantages: the acidity and viscosity are low during hydrogenisation, and therefore the service life of catalyst is long, no nickel soap will be formed, and the corrosion to equipment is reduced; the product can be enveloped and separated by carbamide more easily; the distillation can be performed at a lower temperature; the iodine value of final product is low, the color is light, and the purity is high.
Owner:YIHAI TIANCHENG LIANYUNGANG CHEM INDSCO

Preparation for active octacosa alkanol and triaconta alkanol in rice bran

The invention discloses a method for preparing rice bran active substances octacosanol and triacontanol, which belongs to the comprehensive utilization of rice bran, especially the comprehensive utilization of rice bran wax. The present invention uses crude bran wax as a raw material, and after refining the crude bran wax, adopts ultrasonic hydrolysis of rice bran wax, extraction of fatty alcohol, and separation of octacosanol and triacontanol by molecular distillation technology, a product with a purity greater than 80% is prepared. . The invention uses ultrasonic hydrolysis of rice bran wax and molecular distillation technology to separate octacosanol and triacontanol, which belongs to pioneering research, and establishes a complete set of technology for extracting octacosanol and triacontanol from rice bran wax. The hydrolysis reaction is shortened by more than 10 hours compared with the general method, shortened from 12-16 hours to less than 1 hour, and the hydrolysis rate has been increased by 2 times; the pilot test of molecular distillation has been carried out, and the preparation of high-purity biologically active substances octacosanol, Triacontanol breakthrough. The product has high purity, low iodine value, and heavy metal and microbial content meet the requirements of food additives, creating conditions for the development and utilization of high-carbon alcohols in the future.
Owner:JIANGNAN UNIV

Preparation method of hydrogenated dimer acid

The invention discloses a preparation method of hydrogenated dimer acid. The preparation method comprises the following steps: adding cottonseed oil fatty acid, dimethyl formamide, deionized water, sodium carbonate and a catalyst into a reaction still, introducing nitrogen, carrying out heating and pressurization, stirring for 3 to 4 h, adding a phosphoric acid solution, stirring, then warming, gradually reducing pressure inside the reaction still, discharging water vapor, when the pressure is decreased to be 1 atm, stopping heating, and standing for cooling; then adding the solution into a molecular still, adjusting the vacuum degree, and collecting residual liquid inside the molecular still 1 to 2 h later; adding the residual liquid into a high pressure still, adding the solvent and thecatalyst in sequence, introducing hydrogen, adjusting pressure and temperature, and stirring until the iodine value is smaller than or equal to 8 g per 100 g so as to obtain the hydrogenated dimer acid. The hydrogenated dimer acid prepared by the method has the character high dimer content, low in color and luster, low in iodine value, high in flash pint, high ignition point and high heat stability, and can be widely applied to mineral oil additives, surface active agents, waterproof agents, rocket propellants and the like.
Owner:ANQING HONGTAI NEW MATERIAL

Hydrogenation reaction vessel

The invention discloses a hydrogenation reaction vessel. The hydrogenation reaction vessel comprises a reaction vessel main body; the reaction vessel main body is provided with a feeding pipeline anda discharge pipeline; the feeding pipeline is used for introduction of palm oil, and the discharge pipeline is used for discharging of hydrogenated oil; the upper end of the reaction vessel main bodyis provided with a stirring motor; the stirring motor is provided with a stirring shaft; the stirring shaft is designed to stretch to the bottom of the reaction vessel main body, and is of a hollow structure; the upper end of the stirring shaft is provided with a gas inlet hole; the stirring shaft is provided with hollow vane wheels which are communicated with the internal part of the stirring shaft; the hollow vane wheels are provided with gas outlets; the bottom of the stirring shaft is provided with a distributor; the distributor is communicated with the internal part of the stirring shaft;the lower end of the stirring shaft is connected with a hydrogen gas pipeline; and the hydrogen gas pipeline does not rotate with the stirring shaft. According to the hydrogenation reaction vessel, hydrogen gas is introduced into the stirring shaft through the bottom, and is distributed in oil phase using the distributor, at the same time, high speed rotation of the vane wheels is driven, upper hydrogen gas is inhalated through the gas inlets of the stirring shaft, and is distributed in oil phase through gas outlets of the vane wheels, so that reaction effect is ensured.
Owner:SHANGHAI SOAP GRP RUGAO

Snake abdomen scale lower fat and extraction method and application thereof

InactiveCN105733795AFix the problem of reduced efficacyHigh in saturated fatty acidsCosmetic preparationsToilet preparationsAbdomen skinSkin elasticity
The invention relates to snake abdomen scale lower fat and an extraction method and application thereof.The extraction method includes following steps: mincing abdomen skin of a scaled snake to obtain a scaled snake abdomen skin minced product; adding the scaled snake abdomen skin minced product into water, and protease for enzymolysis to obtain a scaled snake abdomen skin enzymolysis product; centrifuging the scaled snake abdomen skin enzymolysis product, and taking supernate for oil-water separation to obtain a snake abdomen scale lower fat crude product; adding the snake abdomen scale lower fat crude product into an ether solvent, and performing microwave extraction and concentration to obtain the snake abdomen scale lower fat.The snake abdomen scale lower fat obtained by the method is high in saturated fatty acid content and low in unsaturated fatty acid content, iodine value, acid value and saponification value, friction coefficient of human hand back skin is increased remarkably, water content of the human hand back skin is increased remarkably, and the snake abdomen scale lower fat has a moisturizing function; the snake abdomen scale lower fat has efficacy of protecting skin, improving skin elasticity, nourishing skin and improving skin smoothness when being used for preparing products having skin protecting effect.
Owner:克劳丽化妆品股份有限公司

Method for preparing sulfated methyl ester by ionic liquid catalysis method

The invention relates to a method for preparing sulfated methyl ester by an ionic liquid catalysis method, and relates to the technical field of preparation of sulfated methyl ester by ionic liquid catalysis. The method comprises the following steps that: fatty acid methyl ester is used as a raw material, and a sulfated fatty acid methyl ester is prepared by an alkyl sulfonic acid pyridine ionic liquid catalyst under atmospheric pressure at a reaction temperature of 20 to 40 DEG C; the ionic liquid catalyst is added to the fatty acid methyl ester to be stirred, and the titration speed of sulfuric acid is controlled, so that the sulfuric acid is subjected to a sulphation reaction at a specified temperature in a water bath with a constant temperature; the reaction liquid in the steps is poured out, is placed in a separatory funnel, and is washed with 10wt% salt water until the reaction liquid is neutral. The method had the following advantages that: the iodine value of a product is small and can reach to 42.45 (the iodine value of the fatty acid methyl ester is about 110); the viscosity of biodiesel as a raw material is small, so that the mobility of the product is better, and the proportion of concentrated sulfuric acid is increased. The catalyst has good activity, the used amount of the catalyst is few, the carbonation can be reduced, the color of the product is lighter; the reaction conditions are mild, and the reaction time is short.
Owner:溧阳常大技术转移中心有限公司

Method for separating and extracting isostearic acid from monomer acid

The present invention discloses a method for separating and extracting isostearic acid from monomer acid. The present invention relates to a method for separating and extracting isostearic acid, in particular to a novel method for separating and extracting isostearic acid from monomer acid. The present invention provides a method for separating and extracting isostearic acid from monomer acid, which is suitable for use in commercial production. The method is characterized in: esterify the byproduct (monomer acid) obtain in production of dimer acid through bleaching earth catalytication process under medium pressure without catalyst to obtain monomer acid ester, treat by catalytic hydrogenation under medium pressure, and filter to obtain hydrogenised monomer acid ester; envelope with carbamide, filter, separate, and wash with water to obtain crude product of isostearic acid ester; perform molecular distillation to obtain refined isostearic acid ester, and then perform hydrolysis to obtain isostearic acid. Compared to the separation and extraction technique in the prior art, the present invention has the following advantages: the acidity and viscosity are low during hydrogenisation, and therefore the service life of catalyst is long, no nickel soap will be formed, and the corrosion to equipment is reduced; the product can be enveloped and separated by carbamide more easily; the distillation can be performed at a lower temperature; the iodine value of final product is low, the color is light, and the purity is high.
Owner:YIHAI TIANCHENG LIANYUNGANG CHEM INDSCO

Method for preparing silkworm pupa oil for auxiliarily reducing blood lipid

The invention discloses a method for preparing silkworm pupa oil for auxiliarily reducing blood lipid, wherein the method includes the steps: a) mixing a silkworm pupa powder and water according to the weight and volume ratio of (5-7):100 evenly, to obtain a silkworm pupa solution; b) adding the obtained silkworm pupa solution into immobilized alkaline protease EC 3.4.21.62, carrying out enzymolysis, inactivating enzymes for 5-7 min with boiling water bath, and allowing to stand for liquid separation, to obtain an upper-layer crude silkworm pupa oil; and c) carrying out degumming, deacidifyingand decoloring treatment on the obtained upper-layer crude silkworm pupa oil, to obtain the silkworm pupa oil. The specific immobilized alkaline protease EC 3.4.21.62 is adopted for enzymolysis; compared with traditional methods for extracting silkworm pupa oil, the method can significantly improve the alpha-linolenic acid content in the silkworm pupa oil, and has higher nutritional value of thesilkworm pupa oil (lower acid value, lower saponification value and higher iodine value), so that the prepared silkworm pupa oil is proved to have a significant effect for auxiliarily reducing blood lipid.
Owner:SERICULTURE & AGRI FOOD RES INST GUANGDONG ACAD OF AGRI SCI

A kind of preparation technology of ink cartridge

The invention discloses a preparation process of an ink cartridge and relates to the field of chemical processes. The preparation process comprises the steps of separating the ink cartridge, preparing a cleaning agent and preparing printing ink, wherein the preparation of the printing ink comprises the steps of adding 20% by weight of a colorless fluorescent agent into tea seed oil at the temperature of 30-50 DEG C, uniformly stirring and mixing, adding epoxy resin into a reaction kettle, filling oxygen of 1-2MPa into the reaction kettle, rapidly heating the reaction kettle to 300 DEG C while continuously stirring, reacting for 10min, not introducing the oxygen any more, adding Fischer-Tropsch wax and organic siloxane, scattering a pigment with particle size of 10-100nm into an epoxy resin molten solution in 1-3 times, mixing for 20-30min, reducing the temperature to be 80-100 DEG C, adding a dye, a colorless fluorescent agent solution, flaxseed oil, paraben and corn starch, uniformly mixing, adding a vitamin c saturated water solution and butyl alcohol and stirring at 1000r / min for 20min. According to the preparation process disclosed by the invention, the ink cartridge is divided into two parts, namely an ink cartridge box and a cleaning box, and after the printing ink is used up, the ink cartridge can be cleaned, so that the quality of the filled printing ink is ensured and the waste ink cartridge can be prevented from polluting an environment.
Owner:丹阳恒安化学科技研究所有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products