42results about How to "Composite strong" patented technology

The invention discloses a diesel oil pour-point depressant and a preparation method thereof, wherein the diesel oil pour-point depressant is prepared by the steps: carrying out an aminolysis reaction on a methacrylate maleic anhydride copolymer and higher fatty amine for 6 h with toluene as a solvent and p-toluenesulfonic acid as a catalyst and at a reflux temperature, adding methanol having the same volume as the reaction liquid volume into the obtained reaction liquid, producing a white precipitate, removing a supernatant, washing the obtained white precipitate with toluene, carrying out methanol precipitation to remove the catalyst p-toluenesulfonic acid, then controlling the temperature at 50 DEG C, and carrying out vacuum drying to obtain the diesel oil pour-point depressant. The diesel oil pour-point depressant solves the problems that a (methyl) acrylate pour-point depressant has poor adaptability with diesel oils with different carbon chains, at the same time, makes the reaction of maleic anhydride more diversified, provides another possibility for combination of a maleic anhydride pour-point depressant with the (methyl) acrylate pour-point depressant, effectively improves the condensation point and the cold filter plugging point of No.0 diesel oil, and enables the cold filter plugging point to be superlatively reduced by 11-12 DEG C.

The invention relates to a preparation technology of efficient polymeric aluminum chloride for wastewater treatment. The preparation technology is mainly technologically characterized by comprising the following steps: with hydrochloric acid, aluminum hydroxide and a polymerization regulator as main raw materials, producing a liquid solution by a high-temperature, low-pressure and alkaline adjustment two step method; and producing powdery solid by a centrifuging or pressure spray drying and curing environment-friendly technology. The preparation technology disclosed by the invention is advanced in process, high in production efficiency, fast in purification speed, good in treatment effect, wide in application field, low in treatment cost, energy-saving and environment-friendly, and has important application and popularization values by adjusting the raw material ratio in production.

The invention discloses an ampholytic fluorine-containing surfactant as well as a preparation method and application thereof. The structure of the ampholytic fluorine-containing surfactant disclosed by the invention is shown as a formula 4, wherein n is selected from any one integer in a range of 1 to 4, R1 is -CH2- or -CH(OH)- and R2 and R3 are independently selected from -CH3- or -CH2CH3. The ampholytic fluorine-containing surfactant disclosed by the invention is easy to degrade, is easily dissolved in water and has high surface activity and good compounding performance; a synthesis method of the ampholytic fluorine-containing surfactant provided by the invention is simple and the total yield is high; the cost problem of an aqueous film-forming foam fire extinguishing agent can be extremely reduced; and the ampholytic fluorine-containing surfactant has relatively high actual value and a wide market prospect. The formula 4 is shown in the description.

The invention discloses a polyethylene film for automatic packaging. The polyethylene film comprises an outer layer, an intermediate layer and an inner layer which are sequentially laminated. The outer layer is prepared from the following substances in parts by weight: 20-40 parts of low density polyethylene (LDPE), 30-50 parts of linear low density polyethylene (LLDPE), and 20-40 parts of LLDPE with melt index of 1.1 g/10 min and density of 0.920 g/cm<3>. The intermediate layer is prepared from the following substances in parts by weight: 10-30 parts of LDPE, 30-50 parts of LLDPE with melt index of 1.1 g/10 min and density of 0.920 g/cm<3>, and 30-50 parts of LLDPE with melt index of 2.4 g/10 min and density of 0.921 g/cm<3>. The inner layer is prepared from the following substances in parts by weight: 10-30 parts of LDPE, 30-50 parts of LLDPE, and 10-30 parts of LLDPE. The invention solves the problem that the polyethylene film has lower thermal viscosity and higher bag breaking rate.

The invention discloses a preserving fluid of a collagen mask. According to a formula of the preserving fluid of the collagen mask, each 100 mL of distilled water contains the following ingredients: 0.10-10.00 g of a bonded compound of hyaluronic acid and antibacterial peptide, 0.05-0.4 g of a skin-whitening agent, 0.05-0.4 g of a cutin softener, 0.05-0.4 g of a skin anti-wrinkling agent, 0.2-1.2 g of a skin repairing agent and 0.2-2 g of aromatic. The collagen mask of the invention can be used along with existing collagen masks in the market and also can be marketed alone; the bonded compound of hyaluronic acid and antibacterial peptide in the formula is a non-irritating broad-spectrum antibacterial disinfector, is safe and nonirritating, and has high stability; and the collagen mask obtained after being immersed in the preserving fluid will not produce irritating feelings such as stabbing pain and the like on face and has a moisturizing function and can perform a beauty treatment effect to the greatest extent.

The invention provides a preparation method of a ternary polymer biodiesel pour point depressant. The preparation method of the ternary polymer biodiesel pour point depressant is characterized by comprising the following steps: dissolving methylacrylic acid high carbon ester, benzyl methacrylate and N-vinyl pyrrolidone in a solvent, and carrying out polymerization reaction under the action of an initiator to obtain the ternary polymer biodiesel pour point depressant. The ternary polymer raw material is cheap and easy to obtain, a synthesis method is simple, the ternary polymer raw material notonly has high oil solubility, but also can effectively improve the low-temperature fluidity of biodiesel, and has a good effect on reducing a condensation point and a cold filtration point, and a newpossibility is provided for research and development of novel biodiesel.

The invention discloses degradable waterproof aluminium foil paper which comprises base paper and an aluminium foil layer. The aluminium foil layer is obtained by plating a layer of aluminium foil on the surface of the base paper by adopting a direct vapour plating method, and then a layer of degradable waterproof film with a specification of 5 to 10mum is compounded on the surface of the aluminium foil layer. The aluminium foil layer is prepared by the following preparation process of: (1) uniformly spraying a layer of degradable hot melt adhesive on one surface of the base paper, then placing the coated base paper in a vacuum aluminizing machine to carry out aluminizing, compounding an aluminized layer and the base paper by the hot melt adhesive, and carrying out press-polishing by a press-polishing machine; (2) uniformly coating the surface of the aluminium foil layer with degradable waterproof colloid by a coating roller, then drying the aluminium foil paper in an electric heating constant-temperature fan dryer with a temperature of 120 DEG C for 15s, and then carrying out press-polishing by the press-polishing machine. According to the degradable waterproof aluminium foil paper disclosed by the invention, aluminizing is directly carried out on the surface of the base paper, and then the degradable waterproof film is compounded on the surface of the aluminium foil layer, so that the prepared aluminium foil paper is easy to degrade.

The invention relates to the field of disposable sanitary products, in particular to breathable adult pull-ups. The breathable adult pull-ups comprise a body, a front waist and a back waist, the backwaist comprising an outer layer, a middle layer, an inner layer and elastic rubber strings, the elastic rubber strings are clamped between the outer layer and the middle layer, the elastic rubber strings are fastened to the outer layer and the middle layer, the lower end of the inner layer is lower than the lower end of the elastic rubber strings, and the inner layer is compounded with the middlelayer, a plurality of hot pressing parts are formed and extend in the vertical direction, when the elastic rubber strings contract, the outer layer and the middle layer form outer folding bulges withthe same folding state, the inner layer forms inner folding bulges, the width of the inner folding bulges in the transverse direction covers at least two outer folding bulges, and a ventilation channel is formed between two adjacent inner folding bulges. The breathable adult pull-ups solve the technical problems that existing pull-ups cause tightening marks at waist parts and have poor breathability. At the same time, a production process of the breathable adult pull-ups is provided.

The invention discloses a compound microorganism oil-displacing agent for oil production and a compounding method thereof. The oil-displacing agent is prepared from the following components in percentage by weight: 2-5 percent of an oligomeric surfactant, 5-9 percent of an activator and the balance of water, wherein the oligomeric surfactant is alkyl polyoxyethylene ether polymer, and the activator is prepared from a carbon source, a nitrogen source and a phosphorus source. The compounding method of the oil-displacing agent comprises the following steps: sampling oil-reservoir formation water, separating oil and water, and filtering the formation water; adding the activator into a closed reaction kettle according to the components and proportion, and stirring for 0.5-1.0 hour; adding the filtered formation water into the uniformly stirred activator, heating to 30-40 DEG C, and stirring for 2-3 hours to form an activator solution; and adding the oligomeric surfactant into the activator solution according to the component and proportion, heating to 40-50 DEG C, stirring for 4-6 hours, and standing for 0.5-2 hours. The oil-displacing agent has the characteristics of high displacement efficiency, low interfacial tension, wide oil reservoir application range, large scope of enhanced oil recovery, strong compounding performance, simple compounding method and strong operability, thus the oil-displacing agent can be widely applied to field testing of enhanced oil recovery.

The invention provides a polyamino acid segmented copolymer serving as a siRAN carrier shown in a formula (I). A preparation method for the polyamino acid segmented copolymer comprises the following steps of: enabling beta-benzyl-L-aspartic acid-N-carboxylic acid anhydride to react with cladodification polyethyleneimine in an organic solvent under the protection of inert gas to obtain an intermediate product; enabling the obtained intermediate product to react with polyethyleneimine under the action of a catalytic agent to obtain the polyamino acid segmented copolymer serving as the siRAN carrier. The invention provides a composite particle which comprises the polyamino acid segmented copolymer serving as the siRAN carrier and siRNA; and the siRNA is the Luc siRNA of silent luciferase. The polyamino acid segmented copolymer serving as the siRAN carrier provided by the invention has concentrated electric charge density, strong composite capacity and good biological compatibility; and the toxicity of the polyamino acid segmented copolymer is effectively reduced.

The invention relates to a nitrogen-containing ternary polymer biodiesel pour point depressant, a preparation method and application thereof. The preparation method comprises the following steps of: 1) respectively preparing methacrylic acid high-carbon ester and N-hexadecyl methacrylamide; and 2) adding methacrylic acid high-carbon ester, N-hexadecyl methacrylamide and vinyl acetate into a solvent, then adding an initiator, and carrying out polymerization reaction to obtain a methacrylic acid high-carbon ester-N-hexadecyl methacrylamide-vinyl acetate ternary polymer, i.e., the nitrogen-containing ternary polymer biodiesel pour point depressant. Compared with the prior art, the nitrogen-containing ternary polymer biodiesel pour point depressant solves the problem of poor broad spectrum ofa single methacrylic acid pour point depressant, the N-hexadecyl methacrylamide and the vinyl acetate are introduced to expand the composition of the pour point depressant, the pour point depression effect is improved, and the pour point depressant is simple in preparation process and convenient in experimental operation.

The invention belongs to the field of daily chemical production, and provides a multifunctional wet tissue, which comprises a packaging body, a wet tissue body and a washing bag. The wet tissue body and the washing bag are wrapped in the packaging body, the wet tissue body comprises a wet tissue base material and wet tissue liquid, the wet tissue base material is soaked in the wet tissue liquid, the washing bag is composed of an outer package and washing components wrapped in the outer package, and the outer package and the wet tissue liquid are immiscible. According to the multifunctional wettissue, washing components are newly added and matched while common wiping cleaning and antibacterial functions are achieved, deep cleaning of two hands or utensils is achieved, convenience is brought to life, and the multifunctional wet tissue is easy to degrade and beneficial to environmental protection.

The invention discloses lauryl alcohol polyoxyethylene ether acetate. A preparation method comprises the following steps of: performing esterification reaction of lauryl alcohol polyoxyethylene and acetyl chloride under the conditions of microwave radiation and no solvent, wherein process conditions include: the ratio of raw materials is 1: 1.00-1.10, the microwave emissivity is 375W, and the reaction time is 5min; extracting a reaction product by chloroform, washing the obtained product for two times by using 5 percent sodium carbonate solution, drying the obtained product, and obtaining a lauryl alcohol polyoxyethylene ether acetate product through detection analysis; and then adding 8 to 10 percent of propylene glycol n-propyl ether, 4 to 5 percent of hydroxypropyl sodium cellulosate, 5 to 6 percent of sodium chloride and 45 to 50 percent of water into the product to obtain a non-ionic cleaning agent product by high-speed stirring. The product has special degreasing ability and excellent wettability, can be compatible with cationic and anionic surfactants, and has larger solubility in the water, which ensures that the product has broad application prospect.