31results about How to "Self-emulsifying" patented technology

The invention discloses UV-curable elastic polyurethane acrylate emulsion and a synthesis method thereof. The synthesis method of the UV-curable elastic polyurethane acrylate emulsion comprises the following steps: carrying out reaction on polyester glycol or polyether glycol, carboxylic acid-containing glycol and diisocyanate to generate a prepolymer, adding an optimized micromolecular chain extender for carrying out chain extension, then adding hydroxy-containing acrylate for carrying out blocking reaction, diluting by virtue of an organic solvent, neutralizing and salifying by adopting organic amine, finally adding deionized water for carrying out hydration, and adding a photoinitiator to obtain the UV-curable elastic polyurethane acrylate emulsion. The UV-curable elastic polyurethane acrylate emulsion is polyurethane blocked by acrylate, and a molecular chain of the UV-curable elastic polyurethane acrylate emulsion is provided with hydrophilic negative ions and double bonds, so that the UV-curable elastic polyurethane acrylate emulsion has self-emulsifying property and photocuring activity; and a cured film formed by carrying out photocuring on the synthesized elastic polyurethane acrylate emulsion has excellent mechanical properties, tensile strength is 21MPa, and elongation is 350%, so that the elastic polyurethane acrylate emulsion can serve as matrix resin of water-based ink and waterborne UV-curable elastic paint.

The invention relates to a block polyether elasticity organosilicone softener and a preparation method and an application thereof. Fabric treated by adopting an existing organosilicone softener in a physical conformation has good softness and smoothness and excellent elasticity, but the softener requires addition of a lot of emulsifier for emulsification; and the product stability is poor, and therefore, the softener is not beneficial to wide application. The novel organosilicone softener with a net structure is prepared by epoxide addition reaction of three compounds in a general formula A, a general formula B and a general formula C; the structure of the softener is changed into (An1Bn2Cn3)p; n1 is 1-3; n2 is 1-3; n3 is 1-3; and p is 1-10. According to the block polyether elasticity organosilicone softener provided by the invention, the fabric can be endowed with comprehensive feel of softness, smoothness, fluffiness and elasticity; and particularly, the block polyether elasticity organosilicone softener has an excellent elastic handle style, and has the characteristics of self-emulsification and excellent chemical stability of acid resistance, alkali resistance, salt resistance and the like.

The invention discloses an open-cell type heat-conducting epoxy matrix composite porous material and a preparation method and an application of the porous material. The porous material is prepared from 20 to 40wt% of epoxy resin-heat conducting ceramic powder-modified amine pre-mixed solution and 80 to 60wt% of inorganic filler-aqueous suspension; the epoxy resin-heat conducting ceramic powder-modified amine pre-mixed solution is prepared from 100 parts by weight of epoxy resin, 3 to 30 parts by weight of heat conducting ceramic powder and 50 to 100 parts by weight of poly-oxypropylene polyether modified amine curing agent by pre-mixing for 3 to 10 minutes under a temperature of 20 to 35 DEG C. The porous material is of an open-cell structure, remarkable in air and water permeability, and outstanding in toughness and heat conductivity, and has a good application prospect in the ceramics field, the electronic field, the battery diaphragm field, the environmental protection field, the air purifying field, the chemicals field, the building field and other fields.

The invention belongs to the technical field of preparation of curing agents, and discloses an epoxy resin water-permeable material curing agent and a preparation method and application thereof. The curing agent is prepared from the following components in percentage by mass: 50-80 percent of ricinoleic acid and/or a polymer thereof, and 20-50 percent of fatty polyamine, alicyclic polyamine or polyoxypropylene polyamine containing a polypropylene oxide chain segment. The curing agent provided by the invention is a waterborne curing agent, has superior curing performance, and can be cured at the room temperature; a cured product has superior water permeability and air permeability, and can be applied to curing of an epoxy water-permeable material to prepare an epoxy ceramic forming mold or an epoxy water-permeable material. A fatty polyamine, polyoxypropylene polyamine or alicyclic polyamine curing agent is modified, so that the curing agent contains hydrophobic long-chain alkyl, hydrophilic hydroxyl, an amino group, acylamino and an ester group, has self-emulsifying performance, and can also be taken as a curing agent; a gap and a channel are formed between the epoxy resin and inorganic filler through a hydrophobic group, so that the obtained epoxy material has superior water permeability and air permeability.

The invention relates to a biodegradable aqueous emulsion-type polylactic acid adhesive and its preparation method. As a water dispersible emulsion, every 100 parts by weight of the adhesive at least contains 5-45 parts by weight of a polyethylene glycol grafted polylactic acid copolymer, 5-40 parts by weight of vinyl acetate grafted starch, and 0.5-30 parts by weight of an ethylene-vinyl acetatecopolymer. The aqueous emulsion-type polylactic acid adhesive provided in the invention is biodegradable, has high bonding fastness, adjustable filter rod hardness as well as good moulding performance, and simultaneously has filter rod adsorption enhancing and harm reduction performances.

The invention discloses a mineral oil defoaming agent for a waterborne coating and a preparation method of the mineral oil defoaming agent. The mineral oil de-foaming agent for the waterborne coating comprises the following components in percentage by weight: 5-15 percent of modified organic polyether, 5-25 percent of white oil, 10-25 percent of wax, 15-40 percent of octyl alcohol, 30-55 percent of sulfonated castor oil, 2-10 percent of an emulsifying agent, 0.1-0.2 percent of a catalyst, 0.1-0.3 percent of a sterilizing agent and 0.6-0.8 percent of a dispersing agent. The mineral oil de-foaming agent for the waterborne coating is formed by refining an organic polyether ester, mineral oil and alcohol composite product through a special process. The mineral oil de-foaming agent has the performance such as self-emulsification, easy dispersion, strong universality, good de-foaming, and lasting foam inhibition; the surface defect cannot be generated or the film-forming property cannot be affected; the mineral oil de-foaming agent has a special effect on the waterborne coating.

The invention relates to the field of high molecular materials, and specifically relates to a preparation method of binary acid chain extension modified epoxy resin. The preparation method comprises the following steps: adding epoxy resin and dihydric alcohol into a reactor, enabling the molar ratio of epoxy resin to poly dihydric alcohol to be (2: 1) to (10: 1), heating and stirring, so that themixture is dispersed uniformly, using a hydrochloric acid-acetone method to measure an initial epoxy number, then adding a catalyst, raising the temperature until 110 to 175 DEG C, reacting for 2 to 3h, using the hydrochloric acid-acetone method to measure an epoxy number remaining after the reaction to reach an expected epoxy number, then adding mixed acid compounded with monobasic acid and binary acid into the product, raising the temperature, stirring and mixing uniformly, enabling the molar ratio of monobasic acid to binary acid is (1: 1) to (1: 5), then adding an accelerant, reacting for3 to 5 h at the temperature of 110 to 150 DEG C, and finally obtaining the product being binary acid chain extension modified epoxy resin. The preparation method solves the problem that an existing carbon fiber sizing agent is complex in emulsification technology, unstable in emulsion storage, low in strand bundling after sizing, hardened in strands, low in adhesiveness with matrix resin and thelike.

The invention discloses an adjuvant for animal vaccines, and a preparation method and application thereof. The adjuvant for animal vaccines comprises the following raw materials by volume: 75 to 90% of low-density mineral oil, 1 to 10% of octyl and decyl glycerate and Span-80, 0.5 to 5% of glycerin and polyglycerol isostearate and 1 to 10% of polyethylene glycol-12-hydroxystearate-15, Tween-80 and propylene glycol, wherein the amount of Tween-80 is in a range of 0 to 5%. The preparation method comprises the following steps: weighing the low-density mineral oil; then adding octyl and decyl glycerate, Span-80, glycerin, polyglycerol isostearate, 1 to 10% of polyethylene glycol-12-hydroxystearate-15, Tween-80 and propylene glycol; and carrying out mixing and standing. The adjuvant provided by the invention has safety, stability and self-emulsifying performance, has low sensitivity to temperature in the process of emulsification, can form a water-in-oil-in-water spatial structure, and is extensively applicable to preparation of animal vaccines.

The invention discloses a preparation method of grinding-resistant aqueous cigarette packet printing ink resin. The preparation method comprises the following steps: carrying out vacuum dehydration on 5-10 molar parts of polycarbonate polyol and 5-15 molar parts of acrylic acid grafted modified polyester polyol at 100-150 DEG C for 1-4 hours, cooling to the room temperature, adding 10-20 molar parts of isophorone diisocyanate and 5-15 molar parts of hexamethylene diisocyanate, adding acetone to dissolve, heating to 80-90 DEG C, dropwise adding 0.2-0.25 molar part of an initiator, and reacting for 1.5-3 hours, so as to obtain a prepolymer; adding 2-5 molar parts of small-molecule dihydric alcohol and 1-3 molar parts of dimethylolpropionic acid into the prepolymer, heating to 60-75 DEG C, and carrying out chain extension for 1-1.5 hours; and after cooling to the room temperature, adding 1-3 molar parts of triethylamine under a high-speed stirring condition, stirring for 5-10 minutes, and adding water to emulsify the product, so as to obtain the grinding-resistant aqueous cigarette packet printing ink resin. The VOC content of the prepared grind-resistant aqueous cigarette packet printing ink resin is extremely low, and the grinding resistance, the film-forming performance and the color-developing performance in the preparation of printing ink are relatively good.

The invention belongs to the technical field of the leather chemical industry, and discloses composite fatliquor and a preparation method thereof. Long carbon alkane, maleic anhydride, high-carbon alcohol and fatty alcohol-polyoxyethylene ether serve as raw materials. Firstly, the long carbon alkane and maleic anhydride are subjected to a grafting reaction; then, the high-carbon alcohol and the fatty alcohol-polyoxyethylene ether are subjected to an esterification reaction with the excessive maleic anhydride; and finally, the composite fatliquor is obtained by sulfonating sodium sulfite and adjusting pH and solid contents. According to the preparation method of the composite fatliquor, the self-emulsifying performance of the long carbon alkane is improved through graft modification, and the application of the raw materials in the leather fatliquor is widened significantly. The composite fatliquor is good in dielectric resistance; after fatliquoring, leather is light, puffy, soft and free of peculiar smell and has a certain waterproof effect.

The invention belongs to the technical field of concrete, and particularly relates to a preparation method of a concrete release agent. The method comprises the steps that tung oil as a basic raw material is mixed with a mixed solvent, under the action of a catalyst, an esterification reaction is carried out first, and an ester mixture partly containing benzene ring derivatives is formed; under the action of strong acid, the ester mixture and ethyl alcohol are subjected to an alkylation reaction so that the hydrophobic performance can be effectively improved; the mixture obtained in the last step is mixed with a mixed monomer and the like, and under the actions of an initiator, a catalyst and the like, polymerization is conducted. In the polymerization process, grafting of modified tung oil is achieved, crosslinking is conducted by using a cross-linking agent, and therefore, the preparation method for the concrete release agent is implemented. The problems are effectively solved that the release efficiency of an existing release agent is poor, and the existing release agent easily adheres to a mould and is not prone to stripping.

The invention provides a preparation method for aqueous polyurethane. diisocyanate, polyols and hydrophilic chain extenders are reacted under the action of catalysts, a prepolymer solution with self emulsibility is obtained; the prepolymer solution is added with water for emulsification, then a chain extension reaction is carried out by utilization of polyamines, and aqueous polyurethane dispersions with internal crosslinking are obtained. The polyamines comprise at least above 10wt% of high-molecular amines. Because each molecule of the high-molecular amines contains a plurality of primary amine and secondary amine functional groups, when the high-molecular amines are selected as chain extenders and internal crosslinking agents, the obtained molecules after chain extension have net structures and appropriate crosslinking degree. When the molecules are dried and a compact membrane with good water resistance and storage stability can be formed. By utilization of an internal crosslinking method, the problem of contradiction of hydrophilcity and water resistence of aqueous polyurethane is solved. The aqueous polyurethane can be applied in intaglio printing oil, and can meet the requirements of boiling resistance (100 DEG C/30min) and steaming resistance (121 DEG C/30min).

The invention relates to a preparation method of an antibacterial nano material. The preparation method of the antibacterial nano material comprises the following steps: 1) after heating and stirringan adhesive, dehydrating to obtain a resultant A; 2) after stirring a spherical antiblocking agent, silver oxide, polyhexamethylguanidine stearate and the resultant A, heating and carrying out vacuumtreatment, dehydrating after vacuum treatment, then guiding in a rubber mixing mill and adding N-methyl diethanolamine to obtain a resultant B; 3) after grinding and stirring a nano iron and titaniumdioxide composite material, a surfactant and deionized water, adding copper oxide and limestone, and stirring to obtain a resultant C; and 4) after uniformly stirring the resultant B, the resultant C,2,6-toluene diisocyanate, a hydrophilic chain extender and a salt-forming agent, and carrying out extrusion and forming to obtain the antibacterial nano material. The problem that nano titanium dioxide is easy to agglomerate in the existing prepared antibacterial nano material is obviously avoided, and meanwhile, the prepared antibacterial nano material is excellent in antibacterial property andlong in service life and resists stretching.

The invention discloses an end-capped waterborne polyurethane vacuum plastic suction adhesive and a preparation method thereof, and belongs to the technical field of waterborne polyurethane. The end-capped waterborne polyurethane vacuum plastic suction adhesive is prepared from the following raw materials: polyester polyol, aliphatic diisocyanate, a micromolecular hydroxyl-terminated chain extender, an end-capping reagent, Na2CO3, a defoaming agent, an antibacterial agent, a wetting agent and a thickening agent. The preparation method comprises the following steps: synthesizing a prepolymer by using mixed polyester polyol, mixed isocyanate and a chain extender, then introducing an end-capping reagent into a waterborne polyurethane system, carrying out end capping on part of NCO groups in the prepolymer and providing hydrophilicity, and after emulsification, carrying out chain extension on uncapped NCO and water to form a macromolecular waterborne polyurethane system. The adhesive not only has certain initial viscosity, but also can provide NCO groups for reaction crosslinking in the later period, so that the heat resistance and hydrolysis resistance of a finished product are improved.

The invention relates to the field of oil and gas field development and oil reservoir recovery ratio improvement, in particular to a self-emulsifying system viscosity-concentration relationship description method. The description method comprises the following steps: acquiring test data; solving a viscosity parameter by utilizing least square method regression; and establishing a description modelof the relationship between the viscosity of the self-emulsifying system and the saturation of the underground residual oil according to the obtained viscosity parameters. According to the method, self-emulsifying concentration and influence parameters of underground residual oil saturation on water-phase viscosity are introduced according to a basic seepage law of combination flooding, a mathematical model for describing self-emulsifying flooding viscosity is established, and a method for describing influence of underground residual oil saturation on viscosity of a self-emulsifying system isprovided. According to the method, the viscosity change of the self-emulsifying system under different oil saturation conditions can be described more accurately and reasonably, so that the effect ofimproving the recovery ratio is accurately predicted.