212results about How to "High water repellency" patented technology

This invention relates to a novel method and apparatus for packaging and shipping horticultural products including cut flowers. More particularly, this invention pertains to a novel method of and packaging for packaging cut flowers in a modified atmosphere package to prolong shelf life, shipping the packaged flowers to the destination, and then at the destination, opening the package and rehydrating the cut flowers in the package by saturating the stems of the flowers with water.

A method of forming a resist pattern through liquid immersion exposure in which exposure is performed such that a liquid film is formed between a substrate for a semiconductor device on which a processed film is formed and an objective lens arranged above the substrate is provided, and the substrate treated with a water-repellent agent solution composed of at least a water-repellent agent and a solvent is exposed to light.

The invention relates to a method for preparing aqueous polyurethane. It comprises following steps: employing polyisocyanates bridging agent, proceeding copolymerization with excess aqueous polyether, liquid ploydimethyl oxosilane ternary block and getting ployoxosilane-polyether polymer, introducing polyurethane and organic silicon when generating carbamate with carbamate to main chain, adding chain propagation agent for chain propagation reaction and getting preploymer containing hydrophilic group; adding mixture of polyhydroxy compound and dissolvent into reaction system for second chain propagation reaction; neutralizing by adding neutralization agent, adding water for emulsification, adding polyamine for chain propagation; distilling to remove dissolvent after reaction and getting aqueous polyurethane modified with aqueous polyurethane-polyether polymer. The product possesses characteristics of polyurethane and polysiloxane, the storage stability, mechanics property and comprehensive performance is increased and it mainly is used as pigmentum and aqueous industrial coating material.

A filter medium for an air filter, characterized in that it comprises a filter material having a glass fiber as its primary component and an alkyl ketene dimer adhered to the surface of the glass fiber; and a method for producing the filter medium which comprises a step of subjecting a dispersed slurry of a raw material fiber to a wet papermaking to form a wet paper, a step of immersing the wet paper in an aqueous dispersion or solution of the dimer or a liquid mixture of the dimer and a binder resin, or applying or spraying any of the above-mentioned liquids to the wet paper, to thereby allow the dimer to adhere onto the surface of the glass fiber, and a step of drying the resultant wet paper having the dimer adhered thereto. The filter medium exhibits a reduced amount of an out gas generated when it is used with ventilation and also exhibits high water-repellency and satisfactory strength in various applications such as air conditioning of a building and semiconductor manufacturing.

The invention provides a preparation technology of camouflage cover cloth, which comprises the following steps of: (I) performing pretreatment of base cloth for dyeing, printing, coating and sizing; (II) dyeing the base cloth by use of dyeing liquid including dyeing disperse dye with a near-infrared shielding function and an ultraviolet absorbent; (III) printing the dyed base cloth by use of printing slurry including printing disperse dye with a near-infrared shielding function; (IV) bottoming the printed base cloth by use of polyamide resin glue; (V) performing PVC (polyvinyl chloride) whitewashing of the bottomed base cloth by use of PVC coating slurry; (VI) performing PU (polyurethane) silver-surface coating of the base cloth after the PVC whitewashing by use of polyurethane silver slurry; and (VII) performing padding finishing of the base cloth after the PU silver-surface coating in water-repellent finishing liquid, and then drying and baking. According to the invention, fabric has a near-infrared green shielding function, color fastness to light and high resistance against hydrostatic pressure as well as high water sprinkling degree, the technology is reasonable, and the economic cost is low.

The invention relates to a core-shell type fluorinated acrylate fabric water repellent which comprises the components by weight percent: 25-50% of monomer, 50-75% of deionized water, an initiator and an emulsifying agent, wherein the weight of the initiator is 0.5-1.5% of the total weight of the monomer, and the weight of the emulsifying agent is 1.0-3.5% of total weight of the monomer. A preparation method of the water repellent comprises the steps of respectively preparing shell emulsion and core emulsion, and then dripping the shell emulsion and the initiator into the core emulsion for reaction to obtain the core-shell type fluorinated acrylate fabric water repellent. The core-shell type fluorinated acrylate fabric water repellent is applied to water and oil repellent finishing of the fabric, so that the fabric has excellent water and oil repellent property, and the problems that the existing water and oil repellent is poor in use durability, low in fastness and the like in the aspect of wearability can be solved; furthermore, the performances such as air permeability, moisture permeability and the like of the fabric are not influenced, and the environmental pollution is not caused.

The invention provides a drying agent for polyurethane synthetic leather and a preparation method thereof. The drying agent has excellent drying performance, and the hydrolysis resistance of the products is effectively improved by adding the drying agent into the polyurethane synthetic leather. The drying agent is solution of fluorine-containing polyurethane resin, and the weight percentage concentration of the solution is 19.94 to 80 percent. The drying agent comprises the components of an effective solid matter A, a solvent B and an aid C, wherein A is fluorine-modified polyurethane resin and can be expressed by a general formula, namely PFm(PULink)nXk, wherein PF is a chain segment generated by reacting fluorine-containing alcohol with 2 to 18 carbon atoms with an isocyanate group; the PULink is a polyurethane molecule chain segment generated by reacting a polyol compound with diisocyanate and comprises 8 to 16 repetitive units of carbamate; X is a chain or cyclic group and has 2 to 20 carbon atoms; m is an integer from 2 to 8; n is an integer from 1 to 8; k is a number from 1 to 3; m and n can be equal or unequal; and the aid C is modified organosilicon and an addition amount of the aid C is 0.06 to 1.2 percent.

A stapled melt spinning method for producing nonwoven fabrics with hygroscopic metastatic feature. Firstly, fuse bio-polyamide 6,10 into melt, extrude and spin it out spin heads of extruder into filaments, cool, draw and collect filaments into tow, then extend, cut and card the filaments into the staples, and spread the staples on a conveyer to form fibrous web. Next, blend and dissolve pulp by N-methylmorpholine N-oxide (NMMO) dissolving solvent, dehydrate it to form dope, and extrude and spin it out spin heads of extruder into filaments, then cool, draw and collect filaments into tow, and extend, cut and card filaments into staples, then overlay the staples over existing fibrous web to form a composite fibrous web of bio-polyamide 6,10 and cellulose filaments. Finally, coagulate, regenerate and convert fibrous composite of bio-polyamide 6,10 and natural cellulose into nonwoven fabric with hygroscopic metastatic feature by hydro-entangled needle punching, drying, winding-up processes.

There is provided a highly reliable autoanalyzer less liable to sample and reagent carry-over and capable of preventing contamination and precisely pipetting samples and reagents. Using a sample pipetting nozzle 27 having water-repellent surfaces, a sample is pipetted from a sample cell 25 to a reaction cell 4 having a hydrophilic bottom face.

The invention relates to a preparation method of a novel organic silicone oil water repellent agent used for cotton fabric. The preparation method comprises the steps of: under the protection of nitrogen, adding 2 times of molar weight of toluene used as a solvent to a three-neck flask, then respectively adding hydrogen-containing silicone oil with 1 time of molar weight of active hydrogen, 3 times of molar weight of tetrahydrofuran and 4 times of molar weight of iodomethane to the three-neck flask, then adding 0.01 time of molar weight of palladium chloride catalyst, and reacting under the action of the palladium chloride catalyst to prepare the organic silicone oil water repellent agent with active group. The obtained organic silicone oil water repellent agent is mainly used for water repelling finishing of the cotton fabric, can improve water repellent property of the fabric as well as the water repellent durability and tearing resistance of the finished fabric, and is a novel printing and dyeing auxiliary agent.

The invention discloses a textile subjected to water repellency treatment and a production method for the textile. The textile mainly comprises cationic dye-dyeable modified polyester fibers and/or nylon fibers; the single fiber surface of the textile is at least covered with a resin film formed by water-repellent C6 fluororesin and water-repellent non-fluororesin; the surfaces of the cationic dye-dyeable modified polyester fibers and/or nylon fibers have anionic groups. The textile has durable washability and high water repellency.

The invention relates to an anti-icing cable applicable to ice rain atrocious weather and matched auxiliary facilities with anti-icing property. The anti-icing cable of the invention is characterized in that the cable is sleeved with an anti-icing sleeve, a clearance is reserved between the inner surface of the anti-icing sleeve and the surface of the cable, and the anti-icing sleeve can rotate relative to the cable. An insulating bottle for field power transmission is characterized in that the easy-icing surface of the insulating bottle is provided with the anti-icing sleeve. An anti-icing field metal tower body is characterized in that the surface of an easy-icing part of the tower body is provided with an anti-icing element. A method for arranging the anti-icing sleeve or the anti-icing element on the easy-icing part of the cable, the insulating bottle or the tower body effectively prevents the surface from icing, greatly reduces the heat exchange with the outside, and effectively prevents the icing phenomenon caused by heat absorption after rainwater is directly contacted with the cable, the insulating bottle or the tower body.

This invention relates to a manufacturing method for artificial leather including the following steps: providing a piece of basic cloth, forming a PUR resin impregnation layer with a water-driven agent in said cloth and a coated layer on said cloth to freeze, wash and dry said impregnation layer and the coated layer to form a kind of water-driven artificial leather and then process the fluorine water-driven agent to form a high water-driven artificial leather.

The invention discloses a manufacturing method of an acrylic fiber and bamboo fiber blended water-repellent shell fabric. The selected warp and weft materials comprise the following components in parts by mass: 40-90 parts of acrylic fibers, 20-45 parts of natural fibers, 6-12 parts of synthetic fibers, 8-15 parts of bamboo fibers, 60-95 parts of cotton fibers and 8-18 parts of super fine denier polyesters. According to the manufacturing method, water repellent finish is carried out between sizing operation and air injection by the following steps: padding a shell fabric in a water repellent finish liquid; taking out the shell fabric; and then carrying out electron radiation and drying treatment, wherein the water repellent finish liquid comprises 2-8% by mass of a water repellent; the drying treatment comprises first drying treatment and second drying treatment. According tothe manufacturing method of the acrylic fiber and bamboo fiber blended water-repellent shell fabric designed by the invention, the cohesive force between the fibers of the acrylic fiber and bamboo fiber blended water-repellent shell fabric can be enhanced, and the acrylic fiber and bamboo fiber blended water-repellent shell fabric has a good water-repellent antibacterial performance while having the advantages of high elasticity, high strength and heat and light resistance, and the washability and the softness of textile are improved.

The present invention relates to polyalkylsilsesquioxane particulates and a method of preparing the same, and more particularly provides the polyalkylsilsesquioxane particulates, of which moisture content is low, water repellency is high, and hygroscopic property in storage is low, and a method of preparing the same by end-capping silanol groups (SiOH) on the surface of the polyalkylsilsesquioxane particulates with alkyl groups by adding an alkoxytrialkylsilane having a triorganosilyl group thereto.

The invention relates to a biodegradable thin-film material strengthened by plant fibers and a preparation method thereof. Raw materials and parts by weight thereof used are as follows: 20 parts to 45 parts of plant fibers, 30 parts to 50 parts of starch, 20 parts to 35 parts of vinyl monomers, 20 parts to 30 parts of biodegradable plastics, 10 parts to 15 parts of plasticizers, 3 parts to 5 parts of water and 0.5 part to 3 parts of heat stabilizers. The preparation method of the thin-film material comprises the steps: the plant fibers, starch, vinyl monomers and water of certain quantities are evenly mixed and radiated by a cobalt Gamma 60 source or an electron accelerator for 0.5kGy to 20kGy; the material after radiation is mixed with the biodegradable plastics, the plasticizers and the heat stabilizers; then a twin screw is used for preparing a thin-film special material; and finally the thin-film is formed by means of blow molding using a single screw. The completely biodegradable thin-film has good water resistance and heat combination performance and is applicable to producing farming terra films and packing films so as to solve the white pollution problem caused by the heavy use of oil-based plastic.

The invention discloses a preparation method of a water repellent finishing agent, which comprises the following steps: adding ethanol in ammoniacal liquor for stirring, adding tetraethyl orthosilicate for reacting for a while to prepare transparent blue silica sol, adjusting the pH value of the nano silica sol by citric acid, and dissolving the nano silica sol and fluorine-containing acrylic acid ester according to certain mass ratio in water to prepare the finishing agent. According to the invention, the price of a fluorine-containing polymer is expensive, some fluorine-containing polymer contains pollutant of PFOS and PFOA, so that the application is limited, the silica sol is added in the fluorine-containing polyacrylate, water and oil repellent performance of the water repellent finishing agent is increased, and the usage of the fluorine-containing polymer can be reduced.

This invention discloses a method for preparing a waterproof acrylate coating agent. The object coated with the waterproof acrylate coating agent has such advantages as soft touching sense, high water resistance, high waterproof effect, and high film -forming performance, and high wind, rain, gigging and cold resistance. The generated waste gases can be incinerated in a catalytic incinerator, thus the waterproof acrylate coating agent is environmentally friendly.

The invention provides a high-barrier spun and melted novel breathable material. When the gram weight is 25 gsm, hydrostatic pressure resistance is 390-410 mmH2O, air permeability is 450-550 L/m<2>/S,MD strength is 65-75 N/5 cm, CD strength is 28-35 N/5 cm, MD elongation is 40%-80% and CD elongation is 40%-80%. The invention also provides a preparation method of the novel breathable material. Themethod comprises steps of material selection, melt extrusion, fiber drafting and hot rolling treatment. S-layer fine denier fiber with fineness of 1.5-1.8 denier is obtained through fiber drafting; M-layer fine denier fiber has fineness of 2-4 micrometers, and water repellency and filling power of fiber are kept. The invention also provides an application of the novel breathable material in diapers and the breathability of the diapers is substantially improved.

The invention discloses a nano-organosilicon and polyurethane composite waterproof emulsion. The emulsion is characterized by being composited from the components in percentage by mass as follows: 34%-47% of nano-organosilicon emulsion and 53%-66% of a waterborne polyurethane emulsion, wherein the nano-organosilicon emulsion is prepared from vinyl nano-SiO2 sol, a double-ended alkenyl organosilicon monomer, a monovinyl organosilicon monomer, an emulsifier, water and initiator by emulsion polymerization; the aqueous polyurethane emulsion is prepared from polyether glycol, diisocyanate, dimethylol propionic acid, dihydroxysilane monomer, triethylamine, ethylenediamine, a catalyst, an organic solvent and water. Hydrophobicity of the textile surface can be improved by increasing coarseness ormodifying the surface with low surface energy substances. Polysiloxane is used as a low surface energy material and nano-SiO2 is used for forming roughness to be combined with water-based polyurethane, and accordingly, good water repellency is achieved, and adhesion of organosilicon is improved.

The object of the invention is to provide a composition for forming an upper layer film for immersion exposure capable of forming an upper layer film effectively inhibited from developing defects through an immersion exposure process, such as a watermark defect and dissolution residue defect. Also provided are an upper layer film for immersion exposure and a method of forming a resist pattern. The composition for forming an upper layer film includes a resin ingredient and a solvent. The resin ingredient includes a resin (A) having at least one kind of repeating units selected among those represented by the formulae (1-1) to (1-3) and at least either of the two kinds of repeating units represented by the formulae (2-1) and (2-2). (1-1) (1-2) (1-3) (2-1) (2-2) [In the formulae, R¹ represents hydrogen or methyl; R² and R³ each represents methylene, linear or branched C_2-6 alkylene, or alicyclic C_4-12 alkylene; R⁴ represents hydrogen or methyl; and R⁵ represents a single bond, methylene, or linear or branched C_2-6 alkylene.].