230results about How to "Good anti-foam" patented technology

The invention provides a method for preparing high base number (TBN400) synthetic calcium alkyl-benzene sulfonate. The method comprises the following steps of: adopting a mixed acid of long-chain linear alkyl-benzene sulfonic acid and high-boiling heavy alkyl-benzene sulfonic acid, calcium oxide and/or calcium hydroxide, low-carbon alcohol, alkaline-earth metal halide or nitrate, and a mixture of alkaline-earth metal alkylphenol or alkaline-earth metal alkylphenate and polyisobutylene succinic anhydride for a neutralization reaction in the presence of a solvent and cutback oil at a temperature of between 40 and 80 DEG C; then, passing through carbon dioxide to a product of the neutralization reaction at a temperature of between 40 and 60 DEG C for a carbonation reaction; and producing high base synthetic alkyl-benzene sulfonate with a total base number (TBN) of 400mgKOH/g by adopting a process of a one-step method. The product is divided into high-base number (TBN400) synthetic alkyl-benzene sulfonate containing chlorine and high-base number (TBN400) synthetic alkyl-benzene sulfonate without the chlorine. The product produced by adopting the method with low viscosity, small turbidity, easy filtration, light color and no skin formation has the advantages of excellent high-temperature detergency, excellent anti-foaming property and excellent heat storage stability.

The invention provides a manual transmission lubricating oil composition. The manual transmission lubricating oil composition comprises (a) at least one mineral oil and/or synthetic oil with high viscosity index, (b) at least one viscosity index improving agent, (c) at least one pour point depressant, (d) at least one phosphorus-containing antiwear agent, (e) at least one sulfur-containing extreme pressure agent, (f) at least one friction improving agent, (g) at least one clean dispersion agent, (h) at least one antioxidant, (i) at least one antirust agent, (j) at least one metal deactivator and (k) at least one anti-foaming agent. The manual transmission lubricating oil composition provided by the invention meets the vehicle gear oil viscosity level of 75W/80 or 75W/85, has excellent high-low temperature performances, anticorrosion performance, antirust performance and shearing-resistance performance, especially has excellent synchronizer friction performance, can be used for a manual transmission with a synchronizer, and can be completely suitable for the improvement of oil product performance requirement brought about by technique improvement of the manual transmission at present.

The invention discloses a high-speed electroplating luminous tin-plating electroplating liquid as well as a preparation method and application thereof. The high-speed electroplating luminous tin-plating electroplating liquid comprises the following raw materials calculated according to each liter of high-speed electroplating luminous tin-plating electroplating liquid: 120-200mL of tin methyl sulfonate, 100-175mL of 70 percent by weight methylsulfonic acid, 0.03-5g of brightening agent, 30-45g of conducting salt, 1-10g of grain refiner, 5-20g of antioxidant, 0.5-2g of wetting agent, 0.0005-0.001g of antifoaming agent and the balance water. The preparation method comprises the following steps of: dissolving the tin methyl sulfonate into the 70 percent by weight methylsulfonic acid; diluting the mixed solution with a proper amount of water; then adding the brightening agent, the conducting salt, the grain refiner, the antioxidant, the wetting agent and the antifoaming agent into the solution; and uniformly stirring and filtering to obtain filtrate, namely the high-speed electroplating luminous tin-plating electroplating liquid. The high-speed electroplating luminous tin-plating electroplating liquid disclosed by the invention has high coating speed, excellent dispersion capability and antifoaming capability and is suitable for a high-speed electroplating process.

The present invention relates to cleaning composition, preferably a laundry detergent composition, comprising a foam control composition comprising a hydrophobically modified cationic polymer, as well as processes for making and method of using such compositions. The composition of the present invention provides for enhanced suds removal during the rinse cycle with minimal or nil impact on suds volume during the wash cycle.

The invention relates to an oil product of a petroleum chemical product, and especially relates to multi-station cold heading oil and a preparation method thereof. According to the method, a deep refining mineral oil is taken as a base oil, an extreme pressure additive, an anti-rust agent, an oiliness additive, an anti-foaming agent, and animal and vegetable oil are added by blending, the cold heading oil comprises the following components by weight: 75% of base oil, 6% of extreme pressure additive, 3.7% of anti-rust agent, 8% of oiliness additive, 2.3% of anti-foaming agent and 5% of animal and vegetable oil. The cold heading oil is suitable for a cold heading machine, and has the advantages of good extreme pressure abrasion resistance, good antirust performance and anti-foaming performance, so that the usage life of the cold heading machine can be increased.

The invention discloses composite synthetic air compressor oil comprising the following components: a promoter, diisoalkyl (C8 to C13) linear dibasic ester, poly-alpha-olefin synthetic oil and diisoalkyl (C8 to C13) phthalate esters, wherein, the composite synthetic air compressor oil contains 15% to 20% of diisoalkyl (C8 to C13) linear dibasic ester by weight, 5% to 10% of poly-alpha-olefin synthetic oil by weight and 72% to 74% of diisoalkyl (C8 to C13) phthalate esters by weight. The composite synthetic air compressor oil of the invention can meet the requirements that the carbon residue value thereof is low and the biodegradation rate is higher than 70%; the composite synthetic air compressor oil has high high-temperature anti-oxidation stability, lubricating properties, rust-preventing properties, foam resistance and emulsion resistance; and the invention has the advantages that the energy is saved, the environmental pollution is reduced and the service life is prolonged, therefore, the invention can fully satisfy the operating requirements for rotary-type screw compressors.

The invention provides a worm gear oil composition and a preparation method of the worm gear oil composition. The worm gear oil composition comprises a combination of polyether oil base oil, a 2, 2, 4-trialkyl-1, 2-dihydroquinolines antioxidant and a metal passivator. The worm gear oil composition provided by the invention has outstanding oxidation stability, high-temperature detergency, extreme pressure antiwear property, viscosity-temperature performance, anti-foaming performance and high comprehensive performance; and in addition, the preparation method is simple and wide in applicable scope.

The invention discloses an antiwear hydraulic oil specially used for an injection molding machine, which is prepared by the following raw materials by weight percentage: 95-99% of mineral oil, 0.1-1.0% of detergent dispersant: high alkali synthesis calcium sulfonate, 0.1-1.0% of anti-oxidant: 2,6-di-tert-butyl-p-cresol and/or alkylated diphenylamine, 0.3-1.0% of extreme pressure antiwear additive, 0.2-1.0% of antioxidant and corrosion inhibitor, 0.1-0.9% of antirust: neutral dinonylnaphthalene sulfonic acid, 100-500ppm of defoaming agent and less than 0.1% of rubber swelling inhibitor. The invention also provides a method for preparing the hydraulic oil. The hydraulic oil has the advantages of excellent wearability, anti-rust performance, rotation oxygen bomb and thermal stability; simultaneously, the preparation method of the hydraulic oil is simple, is easy for industrial production and has low production cost.

The invention relates to methods for testing foam properties. The methods include an antifoaming property testing method and a defoaming property testing method. The two testing methods comprise the following steps: (1) adding 800-1200ml of liquid to be tested to a transparent test tube with inner diameter of 20-100mm and capacity of 2200-3500ml in advance; (2) vertically injecting the liquid to be tested downwards at a flow rate of 2-12L/min at the height 30-80cm distant from the level of the liquid in the step (1) to generate foams and at the same time, the liquid to be tested flowing out from the bottom of the test tube at the same rate; and taking the amount of the generated foams and the generation time of the foams as well as the subsequent defoaming time as the corresponding parameters. The invention also relates to a device for testing foam properties. The methods and the device have the following beneficial effects: various errors generated by manual operation can be avoided; and the methods and the device not only are suitable for evaluating the defoaming effects of the defoamers for working fluid under various temperature but also can be used for evaluating the antifoaming effects of various systems to which the defoamers are not added and the inspection methods of the defoaming properties of other water-based products (such as washing agents and the like).

The concentrated composite extreme pressure anti-wear agent includes the following components: emulsifier in 20-80 wt%; at least one kind of sulfur-containing extreme pressure additive and at least one kind of phosphorus-containing extreme pressure additive with the gram atom S/P ratio 1-5000 in 10-80 wt%; oily agent in 0-60 wt% with the total content of extreme pressure additive and oily agent being 20-80 wt%; and diluent oil in 0-30 wt%. The emulsified liquid compounded with the concentrated agent has high lubricating effect, no toxicity, no bad smell, no bubble and other advantages, and may be used in metal cutting machining and metal deforming treatment.

The invention provides an adhesive sheet and a display which are not liable to be subjected to adverse influence of UV light and have excellent anti-foaming performance. The adhesive sheet (1) has an adhesive layer (11) which bonds a display forming component (21) to another display forming component (22), which have section difference at least on to-be-laminated sides. The adhesive layer (11) is composed of an adhesive that is formed by thremal-crosslinking an adhesive composition including (methyl)acrylate polymer (a), a thermal-crosslinker (b) and a ultraviolet absrober (c). The adhesive layer (11) is lower than 2% in haze and is lower than 1% in light transmittance under wavelength of 360 nm.

A heavy-duty antiemulsifying oil film type bearing oil for high-speed wire rolling mill contains demulsifier, antiwear agent, antifoaming agent, alkylnaphthalene, antioxidant and mineral oil. Its advantages are excellent antiemulsifying, antiwear, anti-extreme-pressure, anticorrosion, antirust, antifoaming and antioxidizing performance, and better viscosity-temp characteristic.

A vitreous enamel steel sheet produced by a continuous casting, excellent in formability, bubbling and black spot resistance and adhesiveness, which comprises, in terms of mass %, 0.002% or less of C, 0.05 to 0.2% of Mn, 0.01% or less of Si, 0.004% or less of N, 0.015 to 0.05% of 0, less than 0.01% of P, 0.025% or less of S, 0.02 to 0.04% of Cu, 0.03 to 0.05% of Nb, and 0.03 to 0.07% of V, satisfying the inequality: 0.2>Mn (%)-2.0.O (%)+0.8.V (%)+0.5.Nb (%), and the balance consisting of Fe and unavoidable impurities, and a method for producing the same.

The invention provides an ashless antiwear oil film bearing lubricant composition, which comprises: (A) at least a highly refined mineral oil with high viscosity index; (B) at least an emulsifier; (C) at least an anti-foaming agent; (D) at least an ashless phosphorus-containing antiwear additive; (E) at least an anti-oxidant; and (F) at least a metal passivator. The above lubricant component has excellent demulsibility, filterability, anti-foaming property, air release property, abrasion resistance and oxidation resistance, passes through FAG FE-8 bearing wear experiments, SKFEMCOR bearing corrosion experiments and FLENDER anti-foaming experiments, and is suitable for lubricating various bearings and industrial gears, especially lubricating highspeed wire rod oil film bearings.

The invention provides an adhesive composition, an adhesive, an adhesive sheet, and a display body. The adhesive composition has an excellent performance on preventing foaming. The adhesive composition comprises (meth)acrylate polymer (A), which comprises a monomer unit composed of hydroxyl monomers; polyrotaxane (B), which comprises hydroxyl taken as the reactive groups and cyclic oligosaccharide as the cyclic molecules; an isocyanate crosslinking agent (C); and a reaction promoter (D), which promotes the carbamate reactions.

The invention provides a water-based ultraviolet-thermal dual-curing coating and a preparation method thereof, belongs to the technical field of water-based coatings and solves the problem that a conventional water-based ultraviolet-thermal dual-curing coating has poor waterproof and anti-foaming properties. The coating provided by the invention comprises 85-120 parts of water-based urethane acrylate, 0.1-0.3 part of water-based flatting agent, 0.2-0.6 part of water-based wetting agent, 1.2-2.6 parts of photoinitiator, 8-12 parts of water-based cosolvent and 4.5-8 parts of water-based curing agent. The water-based urethane acrylate is nonionic water-based urethane acrylate modified by silicone. The invention further provides the preparation method of the water-based ultraviolet-thermal dual-curing coating. After being soaked in indoor-temperature water for 24 hours, the water-based ultraviolet-thermal dual-curing coating doesn't foam, wrinkle or flake off, which proves that the water-based ultraviolet-thermal dual-curing coating has excellent waterproof and anti-foaming properties.

The invention discloses a graphene-containing vegetable lubricant. The graphene-containing vegetable lubricant is prepared from the following raw materials: castor oil, modified castor oil, liquid graphene, trimethyl citrate, N,N-dimethylacetamide, modified nano cerium vanadium oxide, modified sodium carboxymethylcellulose, sucrose ester, an organic molybdenum compound, dodecyl selenium, 4-hydroxy-4-methyl-2-pentanone, benzotriazole, polymethyl methacrylate, 1-butyl-3-vinyl imidazole hexafluoroantimonate, polyurethane, cyclohexane and an organic anti-aging agent. The graphene-containing vegetable lubricant disclosed by the invention has the advantages that the castor oil and other additives are combined, an environment-friendly vegetable lubricant is prepared, the balance of properties is achieved by controlling the types and quantity of the additives, the vegetable lubricant has better oxidation resistance and self-cleaning capability and also has good lubricating property, viscosity-temperature characteristic, low temperature fluidity, low volatility, corrosion resistance, anti-foam property and anti-emulsifying property, and the overall performance is good.

The invention provides a liquid crystal polyester and a liquid crystal polyester composition and products prepared from the liquid crystal polyester composition. The liquid crystal polyester comprisesaromatic-derived oxy and carbonyl repetitive units (I) and a small amount of aromatic dicarboxylic acid (IV) and can also comprise aromatic-derived dioxy repetitive units (II) and aromatic-derived dicarbonyl repetitive units (III); the composition molar ratio of the repetitive units meets the following conditions: the molar sum of the aromatic-derived oxy and carbonyl repetitive units (I), the aromatic-derived dioxy repetitive units (II) and the aromatic-derived dicarbonyl repetitive units (III) is 100 mol%, and by introducing the small amount of aromatic dicarboxylic acid into the liquid crystal polyester, the excessive molar ratio of carboxylic groups in the liquid crystal polyester is 0.1-5%, which is calculated through (carboxylic groups/hydroxyl groups)/hydroxyl groups*100 mol%. By introducing the small amount of aromatic dicarboxylic acid into preparation of the liquid crystal polyester, the prepared liquid crystal polyester can achieve excellent anti-foaming performance and good melt drainability.