141results about How to "Good spreadability" patented technology

The invention provides positive conductive paste, a positive plate and a lithium ion battery. The positive electrode conductive paste comprises a solid and a solvent, and the positive electrode conductive paste comprises the following components in percentage by mass of the solid: 0.02%-0.05% of a single-walled carbon nanotube, 0.3%-0.7% of a carbon black conductive agent, 0.1%-0.5% of a softening agent, 0.1%-0.5% of a dispersing and anti-cracking integrated auxiliary agent, 96%-98% of a positive electrode active material and 1%-2.25% of a binder. By adding the single-walled carbon nanotubes, the conductivity and mechanical properties of the positive electrode conductive paste are improved. And the softening agent improves the rheological property of the positive electrode conductive paste and enhances the flexibility of the pole piece at the same time. And the dispersing and anti-cracking integrated auxiliary agent effectively disperses positive electrode active material particles and prevents coating and baking cracking. The high solid content achieved under the cooperative work of the three is beneficial to solving the problems of brittle failure, low coating rate, easy cracking of the pole piece and the like of the thick pole piece.

The invention provides composite cosmetic powder with water resistance and skin fitness and a preparation method thereof.The composite powder comprises titanium dioxide, amino acid, natural vegetable oil and synthetic grease, the preparation method comprises the steps that firstly, titanium dioxide powder is added into deionized water to be prepared into 40% aqueous dispersion, an amino acid solution is added to form reaction liquid, and the reaction liquid is added into the deionized water; adjusting the pH value of the reaction liquid to 7-8 so as to coat the hard amino acid; aging, filtering, washing, drying and crushing the reaction liquid to obtain composite modified titanium dioxide powder; adding the composite modified titanium dioxide powder into a high-speed mixer, and sequentially adding synthetic grease and natural vegetable oil along with the operation of the mixer; the composite cosmetic powder is obtained through drying and smashing, and the powder prepared through the proportion and the method has excellent adhesive force and spreadability, proper covering power, a good soft coke effect, prominent water resistance and water resistance and a good makeup maintaining effect.

The invention relates to a sunscreen composition as well as a preparation method and application thereof. The sunscreen composition comprises a coco-glucoside-coconut oil alcohol compound, polyethylene glycol stearate, dextrin palmitate, butyl octanol salicylate and titanium dioxide. The dextrin palmitate, the butyl octanol salicylate and the coco-glucoside-coconut oil alcohol compound in the composition are matched with one another, so that the composition has excellent wetting, dispersing and suspending effects on the titanium dioxide powder, the sunscreen performance of the composition is greatly improved, and the composition has a synergistic effect in the aspects of improving the stability of the composition and improving the sunscreen effect. Meanwhile, the coco-glucoside-coconut oil alcohol compound can be compatible with polyethylene glycol stearate, so that a sunscreen product further prepared from the composition does not need to be removed by a cleaning product, and the sunscreen product can be washed with clear water.

The present invention provides the use of a toad oil cream in preparing a drug for treating dermatitis, and relates to the field of medical technology. The toad oil cream is composed of toad oil and a matrix, and the toad oil is prepared according to the method of Chinese invention patent application CN117126696 A, and the matrix is ​​composed of cetostearyl alcohol, glyceryl monostearate, liquid paraffin, dimethicone, propylparaben, carbomer, glycerol, potassium lauryl phosphate, hyaluronic acid, methylparaben, triethanolamine and water. The toad oil cream obtained by the present invention can reduce the irritation of toad oil to the skin, improve the spreadability of toad oil, show good therapeutic effects on atopic dermatitis and contact dermatitis, and can be used to treat dermatitis.

The present invention provides a salmon mask with anti-inflammatory, anti-aging and repairing effects and a preparation method thereof, belonging to the field of cosmetic technology. The salmon mask includes the following components by weight: Phase A: 2-5 parts of aloe vera gel, 1-3 parts of sodium carrageenan, 2-4 parts of sodium alginate, 1-5 parts of konjac gum, 3-5 parts of glycerol and 85-95 parts of high-purity water; Phase B: 5-10 parts of polydeoxyribonucleotides, 10-25 parts of Centella asiatica extract, 10-25 parts of Portulaca oleracea extract, 5-15 parts of Calendula officinalis extract, 10-20 parts of hyaluronic acid, 2-5 parts of acetyl tetrapeptide-15, 1-3 parts of palmitoyl tetrapeptide-7, 1-3 parts of acetyl hexapeptide-8, 3-8 parts of conopeptide, 1-3 parts of snake venom tripeptide and 2-5 parts of pentapeptide-3. The present invention makes the obtained mask have better anti-inflammatory, moisturizing and repairing effects by selecting specific ingredients.

The invention discloses a hair care composition as well as a preparation method and application thereof. Wherein the hair care composition is prepared from the following components in parts by weight: 0.1 to 8 parts of butyl octanol salicylate; 0.1 to 8 parts of half squalane; 0.01 to 1 part of prinsepia utilis royle oil; 0.1 to 8 parts of tri-olein; 10 to 90 parts of cyclopentasiloxane, and 10 to 90 parts of cyclopentasiloxane; the hair care composition provided by the invention has good hair care and color fixation effects, is moderate in greasy feeling, comfortable to use and high in glossiness when being smeared on hair, can effectively repair hair quality damage caused by dyeing, and has a good use prospect in the field of hair care and color fixation.

The invention discloses a preparation method of lithium ion battery negative electrode slurry, which is characterized by comprising the following steps: step 1, sequentially adding 0.5-1 part by weight of CMC dry powder, 0.5-1.2 parts by weight of a conductive agent and 95-97.5 parts by weight of an active substance into a stirring kettle, enabling the stirring kettle to rotate at 400-600 rpm and revolve at 20-30 rpm, and stirring for 20-30 minutes, so that each component is fully and uniformly dispersed to form required mixed powder; step 2, deionized water is added into the mixed powder obtained in the step 1 for kneading, the rotation speed of a stirring kettle is 0 rpm, the revolution speed of the stirring kettle is 20-30 rpm, and the kneading time is 30-60 min; 3, adding 1-2.5 parts by weight of PAA, dispersing at a high speed, and uniformly stirring; the rotation speed of the stirring kettle is 1500-2000 rpm, and the revolution speed is 25-30 rpm. According to the preparation method of the lithium ion battery negative electrode slurry disclosed by the invention, the viscosity characteristic of the slurry is reasonably regulated and controlled, so that the slurry is ensured to have excellent coating performance, and precipitation in the standing process can be avoided, thereby remarkably improving the uniformity and density of a battery negative electrode layer.

The binder composition for a lithium ion battery electrode contains at least a poly (meth) acrylamide copolymer, which is a polymer of a monomer component including a (meth) acrylamide monomer and an unsaturated carboxylic acid group-containing monomer as monomer units, the monomer component having a molar ratio of 1: (1-100) relative to the total amount of the monomer component being 100: (1-100): (1-100): (1-100): (1-100): (1-100): (1-100). The poly (meth) acrylamide copolymer contains 30-80 mol% of a (meth) acrylamide monomer and 20-70 mol% of an unsaturated carboxylic acid group-containing monomer, and the intrinsic viscosity of the poly (meth) acrylamide copolymer is 3.5-7.5 dL / g.

The invention belongs to the field of pharmacy, and particularly relates to oral gel and application thereof. The oral gel provided by the invention comprises nystatin or nysfungin as an active ingredient (API), hydroxyethyl cellulose, sodium carboxymethyl cellulose and optional strawberry essence. The oral gel is used for treating oral candidiasis, can effectively cover the earthy smell of API, and is strong in adhesion, good in coating property, good in palatability and high in stability.

The application discloses a sizing coater with feeding adjustment and relates to the field of coaters, which comprises a conveying belt, a fixed shell arranged above the conveying belt, a feeding groove arranged in the fixed shell, a feeding head arranged in the feeding groove and capable of extruding colloid into the feeding groove, two side plates arranged in the feeding groove, a reciprocating motion space formed between the two side plates, a moving screw arranged in the reciprocating motion space, and a threaded connection between the feeding head and the moving screw, wherein the moving screw is reversely rotated to drive the main body to make linear reciprocating motion in the reciprocating motion space. The distance between the two side plates is the reciprocating motion space, the positions of the two side plates are adjusted, the length of the reciprocating motion space is changed, the reciprocating motion of the feeding head can be changed between the two side plates according to the adjustment of the positions of the two side plates, and the feeding of the feeding head to the feeding grooves with different lengths is more uniform, and the colloid is more uniformly coated on the substrates with different widths.

The invention belongs to the field of pesticide preparations, and particularly relates to an 80% mancozeb wettable powder and an application thereof. The 80% mancozeb wettable powder comprises the following components in percentage by weight: 75-85% mancozeb, 1-5% dispersant, 1-3% wetting agent, 2-4% synergist, 0.3-1% deflocculant, and 100% filler; the dispersant is TERSPERSE 2700, the wetting agent is Terwet-1004, the synergist consists of tea saponin, PVP-K30 and pulverized powder BX, the deflocculant is sodium hexametaphosphate, and the filler is kaolin; wherein the mass ratio of the tea saponin, PVP-K30 and pulverized powder BX is 1-4:1-4:1-4. The wettable powder prepared by the invention is finer, has a higher suspension rate, better spreadability, stronger adsorption capacity, and is resistant to rain erosion. After application, a dense protective drug film can be formed on the surface of crops to prevent pathogenic bacteria from infecting, thereby achieving excellent disease prevention and treatment effects.

Provided is a binder for nonaqueous electrolyte secondary battery electrodes, which is capable of suppressing the degree of swelling of an electrode. A crosslinked polymer containing a carboxyl group or a salt thereof is used as the binder for nonaqueous electrolyte secondary battery electrodes. The cross-linked polymer or a salt thereof has a particle diameter measured in an acetonitrile medium of 0.60-1.0 [mu] m in terms of volume-based median diameter, and a water swelling degree at pH 8 of 25-40.

The invention relates to the technical field of gouty arthritis, and discloses a traditional Chinese medicine plaster for treating gouty arthritis and a preparation method thereof. The ointment comprises the following materials: 1 part of paniculate swallowwort root, 1 part of asarum, 1 part of borneol, 2 parts of costustoot, 2 parts of earthworm, 3 parts of ligusticum wallichii, 3 parts of radix clematidis, 3 parts of spina gleditsiae, 4 parts of raw rhubarb, 6 parts of mint, a proper amount of vaseline, a proper amount of sesame oil, a medical dressing plaster and a desensitization adhesive tape. According to the traditional Chinese medicine plaster for treating the gouty arthritis and the preparation method of the traditional Chinese medicine plaster, the traditional Chinese medicine plaster directly acts on an affected part, transdermal absorption is achieved, the local treatment effect can be rapidly achieved, pains and inflammations caused by the gouty arthritis are relieved, medicinal materials are smashed into ultra-micro powder of 300 meshes through an ultra-micro powder machine, and the traditional Chinese medicine plaster is prepared into the traditional Chinese medicine plaster for treating the gouty arthritis. Compared with an oral medicine, the external plaster can increase the surface area of the medicine and improve the permeability and absorption efficiency of the medicine, and compared with the oral medicine, the external plaster can reduce the stimulation of the medicine to gastrointestinal tracts and systemic side effects.

The present application relates to the technical field of food processing, and in particular to an egg-brushing device, comprising a conveying mechanism, a position detection mechanism and an egg-brushing mechanism; the conveying mechanism comprises a conveying line and a speed detection device, the speed detection device is used to detect the conveying speed of the conveying line to the tray; the position detection mechanism is used to obtain the three-dimensional position information of the moon cakes on the tray; the egg-brushing mechanism comprises a robot and a brush, the speed detection device and the position detection mechanism are both connected to the robot signal; the robot is used to obtain the moving path and moving speed of the brush for brushing the moon cakes on the tray with egg liquid according to the conveying speed of the tray and the three-dimensional position information of the moon cakes through data processing, and the robot controls the brush to move accordingly according to the obtained moving path and moving speed so as to brush the moon cakes with egg liquid. The present application can realize the fully mechanical and automated operation of brushing the moon cakes with egg liquid, and effectively solves the technical problems of poor egg liquid smearing effect and low efficiency in the prior art.

The present invention relates to an emulsion cosmetic composition having excellent stability.

The invention discloses an aluminum etching solution with low surface tension. The aluminum etching solution comprises phosphoric acid, nitric acid, acetic acid, deionized water and a functional additive, the functional additive is prepared by carrying out a copolymerization reaction on alkylene phosphonic acid, polyol diene ether and an olefin-containing biquinoline derivative, and then reacting part of phosphonic acid groups with part of sodium hydroxide or potassium hydroxide. The low-surface-tension aluminum etching liquid disclosed by the invention has relatively low surface tension and can better wet the aluminum surface, so that the etching process is accelerated, the etching uniformity and precision are improved, the lateral etching phenomenon is reduced, and the etched pattern edge is clearer and the line is finer. The invention further discloses a preparation method and application of the low-surface tension aluminum etching liquid, and the method is simple and easy to implement and low in cost and has wide industrial application prospects. According to the etching solution and the preparation method thereof, the production quality and efficiency of the printed circuit board can be remarkably improved, and the requirement of the electronic manufacturing industry for a high-precision etching process is met.

The invention discloses a hair care composition as well as a preparation method and application thereof. The hair care composition is prepared from the following components in percentage by weight: 20 percent to 35 percent of polydimethylsiloxane, 0.5 percent to 2 percent of caprylic / capric triglyceride, 15 percent to 25 percent of a polydimethylsiloxane alcohol-polydimethylsiloxane mixture, 0.5 percent to 3 percent of triolein, 35 percent to 50 percent of cyclopentasiloxane, 0.1 percent to 2 percent of argania spinosa kernel oil, 0.1 percent to 2 percent of butyl octanol salicylate and 0.5 percent to 3 percent of semi-squalane, butyl octanol salicylate, tri-olein and argania spinosa kernel oil cooperate, so that nutrient substances in the composition are comprehensively absorbed, atmospheric pollutants and heat radiation are efficiently prevented, hair can be effectively protected from being damaged, the hair quality is improved, and the hair is smooth and glossy.

The invention belongs to the technical field of solar cells, and particularly relates to a preparation method of a water-based copper-doped NiOx nano-material and a product and application of the water-based copper-doped NiOx nano-material, a NiOx shell layer grows on the surface of the prepared Cu: NiOx nano-material, one or more of alcohol ether, alcohol amine, glycol and polyethylene glycol are used as surface ligands of the nano-material, the number of carbon chains is limited to be 2-4, and the water-based copper-doped NiOx nano-material is prepared. The copper-doped nickel oxide dispersion liquid is used for providing water-based groups (-OH and-NH2), aims to be dispersed in water without influencing the conductivity of the copper-doped nickel oxide dispersion liquid, and also can provide binding sites chelated with In and Sn on ITO (Indium Tin Oxide), so that the copper-doped nickel oxide dispersion liquid has relatively high oxygen affinity, relatively good leveling property, excellent film-forming property, relatively good spreadability, adhesive strength and compactness on an FTO (Fluorine-doped Tin Oxide) substrate.

The invention relates to the technical field of defoaming agents, and discloses an emulsion type defoaming agent with excellent stability and a preparation method thereof.The preparation method comprises the steps that white carbon black and graphene are modified and react to obtain modified filler, the modified filler and hydrogen-containing silicone oil are subjected to an addition reaction to obtain modified organic silicon, and the modified organic silicon is subjected to a reaction to obtain the emulsion type defoaming agent. The modified organic silicon, the thickening agent, the emulsifying agent and the deionized water are stirred and mixed to obtain the emulsion type defoaming agent with excellent stability, the white carbon black and the graphene of the defoaming agent have a synergistic effect and are matched with each other, after modification, the defoaming agent can be uniformly dispersed in a matrix to form a more stable defoaming system, the stability of the product is enhanced, the preparation process is simple, and the preparation method is suitable for industrial production. The foaming agent has the advantages of easily available raw materials, low cost, capability of rapidly eliminating and preventing foam generation, effective improvement of the production efficiency, good stability, difficult layering phenomenon, and good dispersibility and storage stability.

The utility model relates to the technical field of cosmetic packaging, in particular to a serum protein active water film vacuum fresh-keeping glass bottle packaging device. The device comprises a storage assembly and a pumping assembly, the pumping assembly is connected with the storage assembly and extracts objects stored in the storage assembly outwards, the pumping assembly is externally connected with a smearing assembly, sealing assemblies are installed on the storage assembly and the smearing assembly, and the sealing assemblies control opening and closing installation. The storage assembly is designed to be in vacuum sealing, contact between oxygen in air and a serum protein active water film is remarkably reduced, the oxidation risk is reduced, the shelf life of the product is prolonged, the pumping assembly can accurately control the dosage extracted each time, waste is avoided, meanwhile, it is ensured that the dosage used each time is consistent, and the service life of the product is prolonged. The pumping mechanism reduces the opportunity that fingers of a user make direct contact with the product, pollution risks are reduced, product sanitation is guaranteed, the external smearing assembly is designed to be suitable for direct use, intermediate operation steps are reduced, and the user can smear the product easily.

The present invention provides a liquid crystal alignment agent, a liquid crystal alignment film and a liquid crystal display element. The liquid crystal alignment agent comprises a polymer (A) and a solvent (B). The polymer (A) is prepared by a specific diamine component (b). The liquid crystal alignment film is formed by the liquid crystal alignment agent, and the liquid crystal display element comprising the liquid crystal alignment film has a lower flickering degree after driving.

The invention provides a condensate for treating enteritis as well as a preparation method and application thereof, and belongs to the technical field of biological composite materials. According to the preparation method, the aggregate is prepared by dissolving the lipoic acid powder in the spermidine solution and stirring, so that the problem of low solubility of the lipoic acid in water is solved, and the problem of intestinal intolerance caused by too strong alkalinity when the spermidine is singly used is also solved. According to the present invention, the obtained coacervate has good spreadability on the intestinal tract surface, the coacervate can be fused to form the hydrogel with strong adhesion so as to form the intestinal tract barrier, and the enteritis treatment effect can be jointly performed through different treatment mechanisms; the process for preparing the condensate is green and safe, does not need to adopt complex chemical substances and synthesis processes, does not introduce toxic and harmful substances, and is simple to operate, controllable and efficient.

The invention relates to a composition for forming a wafer edge protection film, a method for forming a wafer edge protection film, and a method for forming a pattern. The present invention addresses the problem of providing a composition for forming a wafer edge protection film, said composition being capable of providing a wafer edge protection film that can exhibit excellent dry etching resistance and that can exhibit excellent uniform coating properties even on a wafer edge that is difficult to coat. The solution of this problem is to provide a composition for forming a wafer edge protective film, which is used for forming a wafer edge protective film at the peripheral edge of a substrate, and which is characterized by containing a polymer (A) represented by general formula (1) and a solvent. In the formula, W is-SO2-,-C (= O)-or-O-, R1, R2, R3, R4 and R5 are each independently a halogen atom, a monovalent organic group having 1-3 carbon atoms, or a hydroxyl group, and a, b, c, d and e are each independently an integer of 0-4.

The invention relates to the technical field of traditional Chinese medicines, in particular to a traditional Chinese medicine ointment for treating herpes zoster and a preparation method and application thereof. The traditional Chinese medicine ointment is prepared from the following raw materials in parts by weight: 10-20 parts of raw sanguisorba officinalis, 10-20 parts of spina gleditsiae, 10-20 parts of raw liquorice and 5-15 parts of rhizoma smilacis glabrae. According to the traditional Chinese medicine ointment, the raw sanguisorba officinalis, the spina gleditsiae, the raw liquorice and the rhizoma smilacis glabrae are reasonably combined for use according to the theory of syndrome differentiation and treatment of traditional Chinese medicine, and the ointment has the effects of diminishing inflammation, relieving pain, promoting blood circulation, detoxifying, expelling pus and promoting tissue regeneration.

This invention discloses a high-speed, ultra-wide reverse coating apparatus, comprising a frame with a doctor blade frame on one side; an anilox roller assembly, a pressure roller moving device, a gap adjustment device, a glue receiving tray assembly, and a guide roller assembly are mounted on the frame; the pressure roller moving device is equipped with a guide roller assembly A, a traction roller assembly, a traction pressure roller assembly, a traction gap adjustment device, and an adjusting roller assembly, and is located above the anilox roller assembly; the gap adjustment device controls the gap between the traction roller assembly and the anilox roller assembly; the adjusting roller assembly is located on one side of the anilox roller assembly and adjusts the angle at which the film enters the anilox roller by moving it up and down; a closed doctor blade assembly is mounted on the doctor blade frame, which can rotate to fit onto the anilox roller assembly, transferring the glue onto the anilox roller assembly, and then transferring it onto the film through the anilox roller assembly; the rotation direction of the anilox roller is opposite to the forward direction of the film, thereby achieving reverse coating.

The utility model relates to the related technical field of coating, in particular to a reverse coating device with adjustable coating weight, which comprises a rack and a coating roller which is detachably mounted on the rack and can be driven to rotate by a driving source mounted on the rack; the two ends of the two adjusting rollers are connected with movable frames, the movable frames are rotationally connected with the rack through connecting shafts, and the moving direction of the materials bypassing the two adjusting rollers is opposite to the rotating direction of the coating roller; and the driving part is mounted on the rack, is connected with the movable frame and is used for driving the movable frame to rotate so as to change the distance between the material and the coating roller. The rotating direction of the coating roller is opposite to the moving direction of a material, so that the coating can be effectively coated reversely, the coating uniformity is improved, and meanwhile, the placing angle of the movable frame can be adjusted through the arranged driving part, so that the positions of the two adjusting rollers relative to the coating roller are changed, and the distance between the material and the coating roller is changed; the coating amount is controlled by adjusting the pressure between the material and the coating roller.

The invention belongs to the technical field of soldering paste preparation, and particularly discloses nano soldering paste and a preparation method thereof.The nano soldering paste comprises modified nano silver-copper soldering powder, scaling powder and surface modified nano Ni particles; a preparation method of the modified nano-silver-copper solder powder comprises the steps that solder powder is added into a 0.01 M dilute nitric acid solution with the volume being 5 times of the weight of the solder powder, stirring is conducted for 5 min, a mixture aqueous solution containing 0.02 mol / L sodium hydroxide and 0.01 mol / L sodium hydrosulfite with the volume being 1 / 2 of that of the dilute nitric acid solution is dropwise added, stirring is conducted for 30 min at the room temperature, filtering is conducted, vacuum drying is conducted at the temperature of 70 DEG C, and the modified nano-silver-copper solder powder is obtained. The soldering flux comprises the following raw materials in parts by weight: 35-50 parts of esterified modified rosin, 10-15 parts of a self-made mixed activator, 1-2 parts of a surfactant, 3-5 parts of a thixotropic agent, 4-6 parts of a corrosion inhibitor, 2-3 parts of an antioxidant and 25-40 parts of an organic solvent. The prepared high-stability environment-friendly soldering paste has excellent chemical stability and corrosion resistance and has the potential of being widely applied and stored for a long time.

A non-cured heat conductive silicone grease composition contains A component: non-cured silicone oil 100 parts by mass having a kinematic viscosity of 50 to 10,000 mm 2 / s at 40°C, and B component: heat conductive particles 105 to 500 parts by mass relative to 100 parts by mass of the A component. The heat conductive particles contain B1 component: amorphous alumina having a center particle diameter of 0.1 to 1 μm, and one part or all of the alumina is surface-treated 50 to 300 parts by mass, B2 component: plate-like boron nitride having a center particle diameter of 0.1 to 10 μm 5 to 50 parts by mass, and B3 component: agglomerated boron nitride having a center particle diameter of 20 to 70 μm 50 to 150 parts by mass, and are compounded in a ratio of B3 / B2 = 2 to 20. Thus, a heat conductive silicone grease composition having a relatively low specific gravity, although having a viscosity excellent in workability and coatability, and having high thermal conductivity is provided.

The invention relates to a low-temperature-resistant anti-skid adhesive material and a preparation method and application thereof, the anti-skid adhesive material comprises a modified HDPE base material layer and an acrylate pressure-sensitive adhesive layer coated on the base material layer, the base material layer comprises HDPE resin, POE elastomer, methyl vinyl silicone rubber, a compatilizer and a peroxide cross-linking agent; the adhesive layer comprises a soft monomer, a hard monomer, a macromonomer containing a polybutadiene chain segment, a functional monomer, a cold-resistant plasticizer, an initiator and a cross-linking agent. The anti-skid adhesive material provided by the invention can still keep high adhesion at a low temperature of-40 DEG C, and has good base material performance and excellent anti-skid performance.

The present application relates to a liquid crystal alignment agent, a liquid crystal alignment film, and a liquid crystal display device, and particularly relates to a liquid crystal alignment agent which is less likely to generate a residual image and has a low flicker, a liquid crystal alignment film formed from the liquid crystal alignment agent, and a liquid crystal display device having the liquid crystal alignment film. The liquid crystal alignment agent comprises: a polymer (A) comprising a first polymer (A1) and a second polymer (A2), the first polymer (A1) being obtained by reacting a first mixture, the first mixture comprising a tetracarboxylic dianhydride component (a1) and a diamine component (b1); and a solvent (B).