79results about How to "Good water and oil resistance" patented technology

The invention discloses a preparation method of chitosan-polyurethane ionic compound elastomeric material, which comprises the following steps: polyisocyanates reacts with polymer polylol and then reacts with diol or diamine, organic solvent and ionization reagent are added in the reactants to react with water for generating anionic waterborne polyurethane and further performs the ionic recombination reaction with cationic chitosan water solution to obtain the microemulsion or latex of chitosan-polyurethane ion composite, and finally the microemulsion or latex of chitosan-polyurethane ion composite is dried and solidified to obtain the chitosan-polyurethane ionic compoundelastomeric material. The chitosan-polyurethane ionic compoundelastomeric material has the advantages of good mechanical property, easy processing, good oil-water resistance property, good cohesive property with parent metal, controllable performance, good biocompatibility, biodegradable property, high biological activity, good blood contact property, good bacteriostatic property, good antibacterial property, and the like, can be applied in fields of mechanical industry, building industry, sport, medical treatment, and the like, and especially has wider purpose in aspects of life science research, medical materials and medical appliances.

The invention discloses a nano-silicon dioxide which is functionalized by acrylic ester and modified on surface by perfluoro alkoxy, a method for preparing the nano-silicon dioxide, and an acrylic resin coating containing the nano-silicon dioxide. The acrylic resin coating containing the nano-silicon dioxide also contains single-functional acrylic ester, acrylic ester containing at least two acrylic ester groups, alcoholic solvent and evocating agent. The acrylic resin coating containing fluorine and silicon can be quickly solidified, and the coating film hereby formed has excellent oil resistance, water resistance, weather resistance, pollution resistance, surface hardness and surface gloss.

The invention discloses a preprocessed wear-resistant and flame-retardant cable material, comprising the following raw materials in parts by weight: 48-52 parts of natural rubber, 55-58 parts of EPDM rubber, 12-15 parts of chlorobutyl rubber, 12-15 parts of chopped glass fiber, 3-6 parts of corn protein fiber, 3-5 parts of sulfur powder, 1.2-1.8 parts of an accelerant TBzTD, 3-4 parts of an accelerant NS, 7-12 parts of zinc oxide, 4-6 parts of magnesium oxide, 28-32 parts of preprocessed activated material, 30-33 parts of mica powder, 22-26 parts of heavy calcium carbonate, 5-8 parts of antimonous oxide, 12-16 parts of melamine cyanurate, 3-5 parts of barium stearate, 3-6 parts of di-(2-ethylhexyl)-4,5-epoxy tetrahydrophthalate EPS, 5-6 parts of liquid coumarone, 1.3-1.8 parts of an anti-ageing agent 800-B, and 1.5-2.1 parts of an anti-ageing agent BLE. The preprocessed wear-resistant and flame-retardant cable material has excellent wear-resisting property and flame retardant property.

There is provided a method of manufacturing a paper-forming product formed of an environmentally friendly paper coating agent, which is excellent in water resistance, oil resistance, thermally adhesive property, and alkaline water-dissociative property, the method including mixing alkali metal hydroxide, amines, ammonia water, or the like with each of an ethylene-acrylic acid copolymer or an ethylene-(meth)acrylic acid copolymer or a mixture of these polymers, and using a water-dispersible coating solution prepared by adding FDA-approved matting agent, slip agent, and anti-foaming agent into a water-dispersible resin solution prepared by neutralizing the mixed product in an aqueous medium.

The invention relates to a method for preparing a chitosan based polyurethane elastomer human skin equivalent material. The method comprises the following steps: (1) a diisocyanate prepolymer and polypropylene oxide are stirred at the temperature of 80 DEG C and at a high speed and a polyurethane prepolymer is obtained after 2.5 hours of isothermal reaction; (2) chitosan is added and stirred at a high speed forcefully to cause the chitosan to dissolve so as to obtain a thick liquid without precipitates precipitated; and (3) after 2 hours of reaction at the temperature of 80 DEG C, the liquid is cooled to 50 DEG C, multi-amine, a heat-sensitive material and a flame retardant are added, the mixture is poured into a die to be cured and deaerated for 24 hours so as to obtain the chitosan based polyurethane elastomer human skin equivalent material. The bulk polymerization method adopted by the invention has simple preparation technique, and is high efficient, nontoxic and environmentally friendly and the equivalent material prepared has thermal properties close to that of real skin tissue, can be easy to process, is biodegradable, has good biocompatibility, high biological activity, good high temperature, oil and water resistance, controllable performance and other excellent performance, can be widely applied to fields such as human simulation model, automobile, aerospace relevant performance testing and the like.

Disclosed is a water and oil resistant agent comprising a fluorine-containing copolymer obtained by copolymerizing a (meth)acrylate monomer having a polyfluoroalkyl group having 1-6 carbon atoms, hydrophilic monomer, and monomer having an anion-donating group, which agent affords a superior water and oil resistance to a paper. The invention also discloses a process for treating a paper by the water and oil resistant agent and a treated paper thereby.

The invention relates to an acrylate compound for coatings. The compound has a structure represented by a formula (I). The acrylate compound for coatings has lipophilic polycyclic aliphatic groups andhydrophilic hydroxyl groups at a same time and has high polymerization reaction activity. When the acrylate compound is used for a solvent-type acrylic coating, the coating layer shows relatively excellent weather resistance and wear resistance, high glossiness and fullness and the like. When the acrylate compound is used for a water-based acrylic coating, the hydrophilic hydroxyl groups and thelipophilic alicyclic groups of the compound show good solubility in an emulsion system, the polymerization activity is high, the monomer residue amount is low, and the coating after film forming showsexcellent weather resistance, water resistance, oil resistance, impact resistance, high glossiness and the like. The preparation method has the advantages that the technological process is simple, conditions are easy to control, side reactions are few, the raw material conversion rate of reactions is high, and purity of products is high.

The invention discloses an edible sweet film and a preparation method thereof and belongs to the technical field of food packaging and protective materials. According to the preparation method, chitosan and whey protein are used as film forming base materials, xylooligosaccharide is used as a sweetener and genipin is used as a crosslinker. A film forming liquid of the edible sweet film contains the chitosan and whey protein. In the invention, the chitosan and the whey protein are compounded creatively with addition of the crosslinker, so that the film remains the nutrients in the whey protein. The film has good insulation property, mechanical performance and long-acting antibacterial performance. The raw materials of the edible sweet film are all edible, wherein a chitosan acetic acid solution has a sour taste while the xylooligosaccharide enable the film to have a sweet taste, thereby forming the edible sweet film. The method is simple in operations and low in cost, and has a wide application prospect in food industry.

The invention provides a silicon and fluorine-containing antifouling easy-cleaning agent which is only composed of a silicon-fluorine copolymer and an FF31 type perfluorocarbon cyclic ether mixture solvent, wherein the silicon-fluorine copolymer is prepared through conventional solution type free radical polymerization by taking gamma-methylacrylyloxypropylmethylethoxy silane and perfluor C4-C18 alkyl acrylate as copolymerization monomers; the raw materials are simple, easily available and low in price, and the production process is mature and reliable; moreover, a finished product of the antifouling easy-cleaning agent is simple to use and low in price; after firm forming and curing, the antifouling easy-cleaning agent has good water/oil resistance and is not contaminated easily; a film layer has high strength and is not easy to wipe; the antifouling easy-cleaning agent can be widely applied to the surface of a glass substrate, a ceramic substrate or a plastic substrate, and is particularly applicable to the surface of an electronic touch screen.

Disclosed is a water and oil resistant agent comprising a fluorine-containing copolymer obtained by copolymerizing a (meth)acrylate monomer having a polyfluoroalkyl group having 1 to 6 carbon atoms, the agent being able to afford a superior water and oil resistance to a paper. The invention also discloses a composition comprising the water and oil resistant agent, a process for treating a paper thereby and a treated paper thereby.

A liquid non-aqueous dispersion including a silicone oil and a copolymer dispersed therein, the copolymer including (A) at least one radical polymerizable macromonomer containing dimethyl polysiloxane, and (B) at least one radical copolymerizable monomer with the macromonomer (A), which includes at least one (meth)acrylate monomer and optionally at least one vinyl monomer. This liquid non-aqueous dispersion has excellent water resistance, oil resistance and adhesive properties, and when used as a component of cosmetics, it can meet both requirements for long lasting make-up and good feeling of use of cosmetics.

The invention discloses an inorganic membrane for filtering. The inorganic membrane is characterized in that the inorganic membrane is prepared from the following raw materials in percentage by mass: 50 to 85 percent of silicon carbide, 5 to 30 percent of aluminum oxide, 5 to 30 percent of kaolin, 2 to 20 percent of zirconium oxide and 0.05 to 0.3 percent of cellulose. According to the inorganic membrane disclosed by the invention, the inorganic membrane is prepared by adopting an inorganic material, and the filtering area of the inorganic material is increased by 3 times under a condition of the same volume, so that the inorganic membrane has the characteristics of the resistance ability to blocking of ultra-fine powder and excellent oil resistance and water resistance, high temperature resistance and the resistance to acid and alkali corrosion, low surface resistance, high dust removal efficiency, long service life and the like; moreover, the preparation difficulty of the inorganic membrane is small, and an application range is wide.

The invention discloses a trapezoidal high-efficiency dust-removing inorganic membrane and a manufacturing method thereof, belonging to the field of dust-removing inorganic membranes. The inorganic membrane is prepared from the following raw materials: in terms of mass percentage, the raw materials include 50-85% of silicon carbide, 5-30% of aluminum oxide, 5-30% of kaolin, 2-20% of zirconia and 0.05-0.3% of cellulose %. The prepared inorganic membrane has a unique trapezoidal structure, and its filtration area increases three times under the same volume. The inorganic membrane has the ability to resist ultrafine dust clogging and excellent oil and water resistance, high temperature resistance, acid and alkali corrosion resistance, It has the characteristics of low surface resistance, high dust removal efficiency and long service life.

The invention discloses a manufacturing method for phenol and acetone, and relates to the technical field of chemical raw material synthesis. The manufacturing method comprises the steps that improvement is conducted on the basis of an existing method that phenol and acetone are synthesized through isopropyl benzene oxidation and selective acid catalytic decomposition, isopropyl benzene obtained after alkalization and pressurized air are subjected to a countercurrent contact reaction in an oxidation tower, falling film evaporation and two times of concentration are conducted, and then refinedcumene hydroperoxide is obtained; the refined cumene hydroperoxide is decomposed into the phenol and acetone in a moving bed reactor through catalysis of an acid resin catalyst, and then the refined phenol and acetone are obtained through water washing for deacidification, acetone roughing, acetone refining, coke cutting and secondary dealkylation. The manufacturing method has the good selectivityand yield of the phenol and acetone, the reaction conditions are not harsh and easy to control, the resin catalyst can be reused multiple times after collection and regeneration, and thus the production cost is lowered.