442 results about "Fatty amine" patented technology

The invention discloses a PA6 nylon composite material for a high-temperature-resistant filter screen and a preparation method of the PA6 nylon composite material, and relates to the technical field of composite materials. The invention discloses a PA6 nylon composite material for a high-temperature-resistant filter screen. The nylon material is prepared from the following raw materials in parts by weight: 60 to 80 parts of modified PA6 nylon, 10 to 20 parts of modified glass fiber, 2 to 5 parts of montmorillonite, 0.3 to 0.8 part of antioxidant 1010, 0.2 to 0.6 part of stearic acid, 0.5 to 1.0 part of ethoxylated fatty amine, 1 to 3 parts of nano titanium dioxide, 1 to 3 parts of polytetrafluoroethylene micro powder, 3 to 8 parts of aluminum hydroxide, 0.5 to 1.5 parts of chitosan, 1 to 3 parts of hyperbranched polyamide and 0.5 to 1.5 parts of urea-formaldehyde resin coated epoxy resin microcapsules. And 0.3 to 0.8 part of sodium polyacrylate. The PA6 nylon composite material for the high-temperature-resistant filter screen has remarkable advantages. The material disclosed by the invention is high in mechanical property, good in thermal stability and stable in size at high temperature; the self-cleaning, antibacterial and antistatic functions are realized, and the filtering efficiency is high; chemical corrosion resistance, wear resistance and low water absorption are achieved; part of the raw materials can be recycled, the environmental protection concept is met, and the use requirement of the high-temperature-resistant filter screen in a complex environment can be met.

The invention relates to the technical field of new materials, and mainly relates to a double-component low-viscosity ultralow-temperature adhesive as well as a preparation method and a use method thereof. The double-component low-viscosity ultralow-temperature adhesive comprises a component A and a component B. The component A comprises the following components in percentage by mass: 20-40% of bisphenol A epoxy resin, 4-8% of aromatic epoxy resin, 6-10% of polyurethane modified epoxy resin, 1-2% of a rubber toughening agent, 5-20% of a diluent and the balance of an additive. And the component B comprises the following components in percentage by mass: 10-40% of a polyether amine curing agent, 10-40% of a fatty amine curing agent, 10-40% of an aromatic amine curing agent and 10-40% of a phenolic aldehyde amine curing agent. The adhesive provided by the invention has relatively strong compressive strength and excellent toughness, can keep good toughness in a low-temperature environment, is not easy to cause brittle rupture, can bear relatively large mechanical load, and is suitable for various industrial applications.

The invention discloses silver powder and a preparation method and application thereof, and the preparation method of the silver powder comprises the following steps: dispersing a silver source in an alcohol amine compound solution, adding a dispersing agent, and then reacting with a C3-C27 fatty amine solution to prepare the silver powder. The micron silver powder is prepared through the hydrothermal method, the powder can be heated more evenly, the method is simple in process, short in reaction time and high in efficiency, the obtained micron silver powder is good in dispersity, and the tap density of the silver powder can reach about 7 g / cm < 3 >.

The invention discloses an antibacterial peptide simulant based on adamantane modification and application of the antibacterial peptide simulant. The preparation method comprises the following steps: performing amide condensation on Fmoc amino acid to obtain a compound of which the carboxyl terminal is modified by amantadine or Boc protected aliphatic amine, and then removing an Fmoc group by piperidine to obtain a series of amantadine modified crude products and Boc protected aliphatic amine modified intermediate compounds; the intermediate compound is subjected to amide condensation to obtain a compound of which the amino terminal is further modified by adamantanic acid, then other protecting groups are cracked by trifluoroacetic acid to obtain a series of adamantanic acid modified crude products, and the crude products are purified to obtain the adamantane modified peptidomimetic. The adamantane modified peptidomimetic is used for preparing drugs for treating infectious diseases caused by sensitive bacteria and drug-resistant bacteria, has efficient antibacterial activity and low toxicity, and is not influenced by a traditional drug-resistant mechanism.

The invention relates to the field of immobilized enzymes, in particular to immobilized lipase with graft-modified amino resin as a carrier and a preparation method thereof.The method comprises the steps that firstly, the amino resin is modified through the oxidative auto-polymerization characteristic of tannic acid, and first modified amino resin is obtained; and modifying the first modified amino resin by using fatty amine as a hydrophobic modifier to obtain second modified amino resin. Then lipase is fixed on the second modified amino resin through physical adsorption, the lipase is subjected to interfacial activation on an amphiphilic interface on the second modified amino resin, and a part of lipase is covalently bound with quinonyl in an activated state, so that the immobilized lipase with high activity and stability is obtained. The method is easy to operate, green and non-toxic, the prepared immobilized lipase is good in enzyme activity and stability, and the method can be used for preparing the immobilized lipase on a large scale, can be applied to the field of food and has industrial application potential.

The invention relates to the technical field of oilfield chemistry, in particular to an aminoethanesulfonic acid type surfactant and a preparation method and application thereof.The preparation method of the aminoethanesulfonic acid type surfactant comprises the steps that firstly, fatty amine is dissolved in a first solvent, a sodium chloroethanesulfonate aqueous solution is added, and N-long-chain alkyl-2-sodium aminoethanesulfonate is obtained through a reaction; and 2, dissolving a required amount of N-long-chain alkyl-2-sodium aminoethanesulfonate in a second solvent, adding a required amount of methyl acrylate, and reacting to obtain the aminoethanesulfonic acid type surfactant. The aminoethanesulfonic acid type surfactant disclosed by the invention contains long-chain alkyl, amino, ester groups and sulfonic acid groups, so that the aminoethanesulfonic acid type surfactant has good surface activity and can meet the development requirements of oil and gas fields. The microemulsion cleanup additive prepared from the aminoethanesulfonic acid type surfactant can effectively reduce the surface tension and the interfacial tension of an aqueous solution, and the preparation method is easy and convenient to operate, mild in condition and suitable for industrial production.

The invention discloses an icaritin carbamate prodrug as well as a preparation method and application thereof, belongs to the field of pharmacy, and particularly relates to an icaritin carbamate prodrug as shown in a formula 3-N or 7-N and pharmaceutically acceptable salts thereof as well as a preparation method and application of the icaritin carbamate prodrug. Specifically, a main metabolic site (3-site or 7-site hydroxyl) of a natural flavone compound icaritin is subjected to structural modification through a chemical synthesis method, and an appropriate group is introduced into the site to form the icaritin carbamate prodrug. Amines adopted by the carbamate are aliphatic amines. Due to existence of a carbamate structure, II-phase metabolism of icaritin in SD rats is reduced, compared with icaritin raw material medicine, the 3-N-01 prodrug has the advantages that oral bioavailability is remarkably improved, the 3-N-01 prodrug is the optimal prodrug, clinical medication is expected to be capable of reducing administration dosage and improving patient compliance, and the 3-N-01 prodrug can be applied to preparation of the SD rats. And an effective strategy is expected to be provided for improving the oral bioavailability of phenolic drugs. # imgabs0 #

An absorbent for carbon dioxide capture, and a carbon dioxide capturing and absorbing method. The absorbent comprises, in percentages by mass, 40-70% of a main absorbent, 1-20% of an accelerator, 0.05-1% of a corrosion inhibitor, and 0.1-1% of an antioxidant, with the balance being water. The main absorbent comprises, in percentages by mass, 0-40% of a fatty amine, and 60-100% of an alcohol amine. The accelerator comprises at least one of a salt, a hindered amine and a sulfur-containing organic compound comprising S＝O, wherein the mass ratio of the salt to the hindered amine to the sulfur-containing organic compound is (0-2):(0-4):(0-6). The absorbent has a viscosity of less than or equal to 20 cp. The above formula improves the carbon dioxide capture and absorption capacity and regeneration effect of the absorbent, and can reduce energy for regeneration.

The invention discloses a heavy-duty waterborne epoxy glass flake anticorrosive coating and a preparation method thereof, and belongs to the field of anticorrosive coatings. Wherein the component A is composed of a water-based phenolic epoxy emulsion, a water-based epoxy resin dispersion, glass flakes, an anti-rust pigment, titanium dioxide, a wetting dispersant, a coalescing agent, a silane coupling agent, a rheological agent, a base material wetting agent, an anti-flash-rust agent and water; the component B consists of a cardanol modified phenolic aldehyde amine water-based curing agent, a modified aliphatic amine water-based curing agent, a modified polyamide water-based curing agent, propylene glycol monomethyl ether and water; the coating is good in constructability, can be self-dried at normal temperature, has the technical advantages of low VOC (volatile organic compound) content, strong adhesive force, excellent water resistance, boiling resistance and chemical resistance, excellent corrosion resistance and the like, and is wide in raw material source and simple in preparation process.

The invention discloses cardanol basic characteristic mechanical enhanced flame-retardant epoxy resin containing aliphatic amine and a preparation method of the cardanol basic characteristic mechanical enhanced flame-retardant epoxy resin, and belongs to the technical field of flame retardance. The preparation method comprises the following steps: introducing an aldehyde group on a benzene ring of cardanol, and reacting with diamine to form an epoxy resin precursor substance; the preparation method comprises the following steps: fully mixing an epoxy resin precursor substance, epoxy chloropropane, a phase transfer catalyst and an alkaline substance for reaction to obtain cardanol basic intrinsic flame-retardant and mechanically-reinforced epoxy resin; the problems that raw materials of traditional bisphenol A type epoxy resin are non-renewable, the brittleness is large due to the molecular structure, flammability is caused, and the flame retardant property and the mechanical property cannot be considered at the same time are solved, biomass cardanol which is wide in source and low in cost is used as the raw material, and flexibility of an aliphatic chain and rigidity of aromatic hydrocarbon are combined; the Schiff base structure improves the flame-retardant efficiency of the matrix and also improves the mechanical properties of the matrix; the cured epoxy resin system has excellent thermal stability, flame retardance and mechanical properties, and has excellent popularization and application prospects.

The invention relates to the technical field of epoxy AB adhesives, in particular to a special epoxy AB adhesive for a back mesh as well as a preparation method and application of the special epoxy AB adhesive for the back mesh, and the epoxy A adhesive is prepared from the following components in percentage by weight: a component A: 40-60% of bisphenol A epoxy resin; 10-20% of carboxyl-terminated nitrile rubber; 5%-10% of nano SiO2; 1-3% of a silane coupling agent; 5-10% of a reactive diluent; 3-8% of a plasticizer; the component B comprises 50-70% of a fatty amine curing agent; 10-20% of polyether amine; 1-3% of an accelerant; and 10-20% of nano calcium carbonate. Through an interpenetrating network structure formed by the carboxyl-terminated nitrile rubber and the epoxy resin, the peel strength of the adhesive reaches 15-20 N / mm and is improved by 50% or above compared with that of traditional epoxy glue, the peeling stress between a back mesh material and a matrix can be effectively resisted, and the stability and reliability of the structure are ensured.

The invention discloses a high-permeability-selectivity nanofiltration membrane with a bead-like structure and a preparation method and application thereof, and belongs to the technical field of membrane separation, the preparation method comprises the following steps: (1) preparing a water-phase solution by using a water-phase monomer and a nonionic surfactant, the nonionic surfactant is a polyoxyethylene type nonionic surfactant and is selected from fatty alcohol-polyoxyethylene ether, fatty acid polyoxyethylene ether or fatty amine polyoxyethylene ether; and (2) carrying out interfacial polymerization reaction on the water-phase solution prepared in the step (1) and the acyl chloride monomer oil-phase solution on a micro-filtration bottom membrane to prepare the high-permeability-selectivity bead-stringed structure nanofiltration membrane. The method is simple in process and low in equipment requirement, and the prepared nanofiltration membrane with the bead-like structure is high in univalent and multivalent salt separation capacity while keeping high permeability, and has a good application prospect in the field of water treatment.

The invention provides a novel composition and a preparation. The composition and the preparation comprise tranexamic acid and a vitamin A acid alcohol amine compound or a vitamin A acid fatty amine compound. After the composition is prepared into a preparation, the solubility of the vitamin A acid can be improved, the loss of the vitamin A acid in the preparation process is reduced, the content uniformity of the preparation is improved, and the stability of the preparation is improved; the composition can significantly increase the intradermal retention amount of vitamin A acid and tranexamic acid, and does not significantly increase the transdermal penetration amount of tranexamic acid. The composition and the preparation provided by the invention can significantly improve the curative effect and avoid aggravation of toxic and side effects in the treatment of hyperpigmentation and chloasma.

The invention provides a catalytic material, a preparation method thereof and application of the catalytic material in high-purity ethyl aliphatic amine, and belongs to the technical field of fine chemical engineering. The catalytic material provided by the invention has a porous structure, so that the specific surface area of the catalytic material can be remarkably increased, more active sites can be used for contact between reaction raw materials and a catalyst, the reaction process is accelerated, meanwhile, the retention time of the reaction raw materials on the surface of the catalyst is prolonged by the porous structure, and the conversion rate of the reaction raw materials (liquid ammonia) is further improved; active components are loaded on the surface of the AB2O4 type porous composite transition metal oxide, so that the number of active sites can be further increased, and the conversion rate of liquid ammonia is further improved. Results of the embodiment show that when the catalytic material provided by the invention is used for preparing ethyl aliphatic amine by an ethanol catalytic amination method, the conversion rate of liquid ammonia is 95% or above.

The invention belongs to the technical field of anti-counterfeiting optical materials and application thereof, and particularly relates to a double-ligand modified and water stimulus responsive perovskite fiber membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly dissolving metal halide salt BX2 and AX powder in a polar solvent to form a perovskite ABX3 precursor solution, then adding a cyclodextrin cyclic supramolecule and long-chain fatty amine double-ligand system into the obtained precursor solution, and then fully mixing the obtained mixed solution with a high-molecular polymer solution to prepare a spinning solution suitable for electrostatic spinning. And finally, preparing the large-area reversible intelligent fluorescent fiber membrane with the water stimulus response through an electrostatic spinning technology. The water stimulus response intelligent fluorescent fiber membrane based on the perovskite nanocrystals can be applied to the anti-counterfeiting field, such as single information encryption, dual information encryption, anti-counterfeiting labels and high-resolution anti-counterfeiting, is especially suitable for anti-counterfeiting in an underwater environment, and has a wide application prospect.

The invention discloses a biomass modified epoxy resin coating and a preparation method thereof, relates to the field of epoxy resin coatings, and aims to solve the problems of poor weather resistance and poor adhesion to low-surface-energy materials in the conventional biomass modified epoxy resin coating. The coating comprises a component A and a component B, wherein the component A comprises epoxy resin, a reactive diluent, hyperbranched resin, epoxidized graphene, zirconium silicate, naringin dihydrochalcone, an inorganic filler, a leveling agent and a thixotropic agent; and the component B comprises fatty amine, low-molecular liquid polyamide, a curing accelerator, amino-terminated liquid nitrile rubber and a multifunctional additive. The biomass modified epoxy resin coating adopts the renewable biomass raw materials with wide sources, is economical and environment-friendly, and improves the cohesive force, adhesive force and weather resistance of the epoxy resin coating through multiple intramolecular and intermolecular hydrogen-bond interaction of hydroxyl, amido and furan rings and the rivet effect of the multifunctional additive. The method is used for preparing the high-performance biomass modified epoxy resin coating.

The invention relates to a tackifying surfactant with carbon dioxide response and application of the tackifying surfactant in fracturing fluid, which comprises the following steps: 1, adding ethanol as a solvent, sequentially adding cyanuric chloride and long-chain fatty amine while stirring, controlling the reaction in an ice-water bath, and adjusting the pH value of the reaction system to 8-9 by using alkali in the reaction process until the reaction is ended to obtain an intermediate product (I); 2, hydroxyethyl piperazine is added into the intermediate product (I), stirring and mixing are conducted, the temperature is increased to 30-40 DEG C or below, after a heat preservation reaction is conducted for 1-2 h, the temperature continues to be increased while the ethyl alcohol is distilled off and recycled, when the temperature is increased to 80-95 DEG C, the heat preservation reaction is conducted for 5-6 h, the pH of a reaction system is adjusted to be 8-9 with alkali in the reaction process, and after the reaction is finished, the CO2 response tackifying surfactant is obtained. The protonation rate of tertiary amine groups is increased, more tertiary amine groups are contained in surfactant molecules to form multiple cations, then more stable wormlike micelles are formed through the surfactant molecules and small molecule salt, and the tackifying effect and the salt resistance are further improved.

The invention discloses a cashew nut shell oil modified phenolic aldehyde amine epoxy curing agent and a preparation method thereof. The cashew nut shell oil modified phenolic aldehyde amine epoxy curing agent is prepared from the following components in percentage by mass: 10-20% of low-molecular fatty amine, 15-30% of formaldehyde, 35-55% of cashew nut shell oil and 15-20% of organic alcohol. Performance detection shows that the cured product has the characteristics of quick drying and high hardness, has toughness and impact resistance similar to those of a polyamide curing agent, is also suitable for low-temperature curing under a normal-temperature curing condition, is low in price and has good curing performance compared with a common phenolic aldehyde amine epoxy curing agent, and is suitable for being used in the field of high-temperature curing. The epoxy resin is mainly suitable for epoxy floor coatings, building structural adhesives and the like.

The present invention provides an engine lubrication system cleaning oil, the ingredients include: 60-75% base oil and 25-40% functional additives; the base oil is a mixture of 400N base oil, 500N base oil and 650N base oil in any mass ratio; the functional additives include by weight: 1-5 parts of organic boron lubricant, 2-5 parts of cleaning dispersant, 0.3-1 parts of antioxidant, 5-15 parts of auxiliary agent, 0.1-0.5 parts of rust inhibitor, 0.0001-0.0005 parts of fatty amine and ethylene oxide condensate, 3-5 parts of carbon deposit cleaning agent and 4-8 parts of dispersant. The present invention adopts cycloalkyl base oil and organic boron lubricant with good lubricity, and adds carbon deposit cleaning agent and high-performance cleaning dispersant to prepare the engine lubrication system cleaning oil, which does not require a special cleaning machine during cleaning. Before changing the engine oil, the old engine oil is drained, and the cleaning oil is added to run rapidly for 10-15min to achieve the cleaning effect.

The invention discloses a polyphenol hydroxyl fatty alkyl amide lubricant for water-based drilling fluid and a preparation method of the polyphenol hydroxyl fatty alkyl amide lubricant, and belongs to the technical field of oilfield chemistry, the preparation method comprises the following steps: a, weighing 0.10 mol of polyhydroxybenzoic acid, 0.10-0.12 mol of fatty amine and 0.3-0.5% of a catalyst NaF; b, adding into a 250mL three-neck flask provided with a condensation reflux device and a water segregator, introducing nitrogen for protection, heating to 200-250 DEG C, and stirring for reaction for 5-7 hours to obtain a dark brown viscous liquid product; c, carrying out amidation reaction on polyhydroxybenzoic acid and fatty amine to generate polyphenol hydroxyl fatty alkyl amide; and d, stirring and mixing the polyphenol hydroxyl fatty alkyl amide and the solvent high-carbon-number fatty alcohol according to the mass ratio of 6: 4-4: 6 at 70-80 DEG C for 2-3 hours to obtain the lubricant product. The lubricant prepared by the invention has strong adsorption capacity at high temperature and high salt, and a formed lubricating film has strong extreme pressure resistance and wear resistance and is suitable for efficient drilling of ultra-deep wells.

The present invention provides a cationic surfactant microemulsion and a preparation method thereof. The raw materials of the microemulsion include a surfactant and water, wherein the surfactant is composed of a quaternary ammonium salt cationic surfactant, a fatty amine polyoxyethylene ether, an alkyl pyrrolidone, and an isomeric alcohol ether. The microemulsion is used to improve oil recovery after flooding, and has a low surfactant usage ratio, does not require the addition of salt or alcohol as a main agent, is low in cost, and is applicable to formation water with a salinity of up to 90,000 mg / L, thus facilitating widespread application.

The invention discloses a composite resin material for packaging a fuel cell and a preparation method of the composite resin material. The composite resin comprises bisphenol F type epoxy resin, alicyclic epoxy resin, acrylate resin, a toughening agent, nano silicon dioxide particles, a long-chain aliphatic amine curing agent, an imidazole accelerant and graphene coating carbon fibers. Bisphenol F and alicyclic epoxy resin are compounded, acrylate resin is combined to form a rigid-flexible three-dimensional network matrix, nano-silica treated by a silane coupling agent is introduced to improve moisture resistance, and graphene coating carbon fibers with oxygen-containing groups on the surface are utilized to enhance interface bonding force. And a cross-linked network is regulated and controlled through the coordination of the long-chain fatty amine curing agent and the imidazole accelerant. The obtained composite resin has excellent temperature resistance, moisture resistance, mechanical properties and interface bonding strength, effectively solves the problem of performance degradation of a traditional packaging material in high-temperature, high-humidity and corrosive environments, and meets the strict use requirements of fuel cells.

The invention provides modified epoxy water-based putty suitable for rail transit vehicles and a preparation method of the modified epoxy water-based putty, and belongs to the technical field of putty. The hyperbranched polyester modified epoxy resin is added into the main agent component; acrylonitrile modified aliphatic amine is selected in the curing agent component, and other specific components are matched with one another; based on the matched preparation method, the prepared putty product has the characteristics of strong adhesive force, high strength and high toughness; meanwhile, the coating is long in construction service time, high in curing speed, good in grinding property, suitable for large-area coating and scraping and the like, and particularly capable of meeting the coating use of rail transit vehicles.

The invention discloses preparation of a lamellar Ti-MWW titanium silicalite molecular sieve and application of the lamellar Ti-MWW titanium silicalite molecular sieve in epoxidation reaction, and belongs to the technical field of synthesis of inorganic chemicals. According to the method, polycyclic aliphatic amines are added in the Ti-MWW molecular sieve synthesis process, the crystallization temperature is reduced in the initial crystallization stage of the molecular sieve to delay the growth speed of the C-axis of the molecular sieve, and the thin-layer Ti-MWW with the shorter C-axis is obtained, so that the diffusion performance of the Ti-MWW molecular sieve is greatly improved, the diffusion rate of reactant molecules in pore channels is increased, and the performance of the Ti-MWW molecular sieve is improved. Therefore, the catalytic performance of the molecular sieve is greatly improved, and the molecular sieve is suitable for catalyzing liquid-phase epoxidation reactions of propylene, butylene, hexene, cyclohexene and octene and the like.

The invention relates to the technical field of fuel additives, in particular to a non-metal antiknock agent and a preparation method and application thereof, aims to provide the non-metal antiknock agent and the preparation method and application thereof, and solves the core problem that a traditional non-metal antiknock agent is low in efficiency. In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the non-metal antiknock agent comprises the following components in percentage by mass: 55-75% of straight-chain or branched-chain fatty amine, 10-25% of aromatic amine, 5-15% of polysubstituted fatty amine and 5-15% of an electron donor, the electron donor adopts a hydrated electron base solution. The gasoline antiknock agent is environment-friendly and efficient, does not depend on a noble metal catalyst, does not need high temperature and high pressure, not only has the excellent effect of a metal antiknock agent, but also is pollution-free, and can greatly improve the gasoline quality under the condition of extremely low addition amount.

The invention relates to a preparation method of an aliphatic amine polyester ether surfactant and a compound ionic oil-displacing agent thereof, and relates to the technical field of oil field chemicals, the preparation method comprises the following steps: taking aliphatic amine as a raw material, and carrying out ring opening polymerization on the aliphatic amine and ethylene carbonate at a certain temperature under the action of a catalyst to prepare an aliphatic amine polyester ether nonionic surfactant; and compounding the fatty amine polyester ether nonionic surfactant with an anionic surfactant, a cationic surfactant, a phase solvent and water according to a certain proportion to prepare the composite ionic oil displacement agent. The fatty amine polyester ether and the composite ionic oil-displacing agent thereof are superior to a single naphthenic acid amide polyether ester sulfonate anionic oil-displacing agent in the aspects of synergistic effect, stability, salt resistance, hard water resistance, adsorption resistance, interfacial tension stability and binary system oil-displacing performance.

The invention discloses an amido amine-based asphalt regenerant as well as a preparation method and application thereof. The amido amine-based asphalt regenerant comprises the following components in parts by weight: 20-60 parts of amido amine, 10-60 parts of a monofunctional epoxy compound and 5-30 parts of a phenolic compound. The amido amines are based on polycondensates of polyaliphatic amines and single acids. The asphalt regenerant disclosed by the invention can be used for fully regenerating waste asphalt on a washing and throwing material in a large proportion, and a product obtained after mutual reaction of the regenerant has a function of enhancing the performance of the asphalt, so that the asphalt concrete using the regenerant does not need to be degraded, and the pavement reconstruction cost is greatly reduced.

The invention provides a pour point depressant as well as a preparation method and application thereof. The pour point depressant comprises a polymer with a structure as shown in a formula I. The preparation method of the pour point depressant comprises the following steps: (1) mixing alpha-olefin, maleic anhydride, an initiator and a solvent, and polymerizing to obtain a reaction system containing an intermediate product; and (2) adding long-chain fatty alcohol and / or long-chain fatty amine, monohydroxyl-terminated silicone oil and a catalyst into the reaction system obtained in the step (1), and reacting to obtain the pour point depressant. According to the present invention, the structure of the polymer represented by the formula I is designed to obtain the polymer represented by the formula I with excellent performance, and the pour point depressant prepared from the polymer represented by the formula I has a low condensation point.

The invention relates to a cosmetic composition, particularly for hair care, comprising cationic surfactants of the fatty amine type, C15-C18 carboxylic acid and C1-C5 alcohol esters, and Camellia oleifera oils, with a specific weight ratio between said esters and said oils. The invention also relates to a cosmetic treatment process, particularly for cleansing and / or conditioning hair, using said composition.

The application discloses a multifunctional solid-solid phase change material based on thiolactone chemistry and a preparation method and application thereof, and relates to the technical field of high polymer materials.The method comprises the following steps: dissolving double bond functionalized thiolactone and acrylic ester in an organic solvent A, then adding a free radical initiator, and obtaining a polymer PTA through reaction; dissolving the PTA in an organic solvent B, then adding a fatty amine, a fatty acrylic ester and a crosslinking agent, uniformly mixing, and obtaining a mixed solution; and heating the mixed solution to 60-80 DEG C, and reacting for 1-2 hours, so as to obtain the solid-solid phase change material.The solid-solid phase change material prepared by the application exhibits the multifunctionalities of infrared invisibility, reversible anti-fake and shape memory, etc.The integration of these characteristics provides a broad prospect for the development of the next generation of high-performance intelligent materials.