102results about How to "Increased repellency" patented technology

A composition having repellency to low surface tension fluids comprising a material prepared by forming a mixture of a polymer selected from the group consisting of polyolefin, polyamide, polyester, polyacrylate, and blends and copolymers thereof, and a fluorochemical compound comprising a fluorocarbon/hydrocarbon ester of the formulae: wherein Rf is selected from the group consisting of: 1) F(CF.sub.2).sub.x --(CH.sub.2).sub.m wherein x is from about 4 to about 20 and m is from about 0 to about 6; and 2) F(CF.sub.2).sub.x --SO.sub.2 N(R.sub.2)--R.sub.3 where x is a positive integer from about 4 to about 20, R.sub.2 is an alkyl radical of from about 1 to about 4 carbon atoms, R.sub.3 is an alkylene radical of from about 1 to about 12 carbon atoms; and R.sub.1 is an aliphatic hydrocarbon having from about 12 to about 76 carbon atoms; and provided that said fluorochemical compound is other than perfluoroalkylethyl stearate; and melt extruding the mixture.

A surface modifier comprising an organosilicone compound represented by General Formula (A) and/or General Formula(B): F-(CF2)q-(OC3F6)m-(OC2F4)n-(OCF2)o(CH2)pX(CH2)r Si(X')3-a(R1)a (A) and F-(CF2)q-(OC3F6)m-(OC2F4)n-(OCF2)o(CH2)pX(CH2)r (X')2-a(R1)aSiO(F-(CF2)q-(OC3F6)m-(OC2F4)n-(OCF2)o(CH2)pX(CH2)r (X')1-a(R1)aSiO)zF-(CF2)q-(OC3F6)m-(OC2F4)n-(OCF2)o(CH2)pX(CH2)r (X')2-a(R1)aSi (B) wherein q is an integer from 1 to 3; m, n, and o are independently integers from 0 to 200; p is 1 or 2; X is O or a bivalent organic group; r is an integer from 2 to 20; R1 is a C1-22 linear or branched hydrocarbon group; a is an integer from 0 to 2; X' is hydrolysable group; and z is an integer from 0 to 10 when a is 0 or 1.

The invention discloses an anti-mosquito finishing process of a textile fabric. The textile fabric is cotton, tencel, modal, blended cotton (viscose cotton, polyester cotton, polyamide cotton), silk, a wool cotton dyed fabric, a thin chemical fiber fabric, a pair of socks, a mosquito net and the like. The process comprises the steps of: selecting a mosquito repellent and a low-temperature fixative, carrying out nano microencapsulation on the mosquito repellent by utilizing a microencapsulation technology, carrying out anti-mosquito finishing on a textile fabric to form an anti-mosquito emulsion through the low-temperature fixative, dehydrating and curing to finally obtain the anti-mosquito finished fabric. The anti-mosquito fabric fabricated by the anti-mosquito finishing process has a fast mosquito killing function, a repelling rate of the anti-mosquito finishing process on aedes albopicus, culex pipiens pallens and the like is higher than 90 percent and an anti-biting rate of the anti-mosquito finishing process is 100 percent; the anti-mosquito fabric does not have bad influence on physical indices such as appearance, strength, moisture absorbing property and the like of the fabric; the anti-mosquito fabric has a good anti-mosquito effect after being washed 15 times; and the anti-mosquito finished fabric does not stimulate or cause allergy to skin, is safe and non-toxic to a human body, and is comfortable to wear.

The invention relates to the technical field of fibers, in particular to a mite and mosquito-bite preventing underwear, sleepwear and home wear which is characterized by comprising the following processing steps of: preparing medical liquid; carrying out dyeing and printing and other pre-treatments on cottons or cotton blended fabrics; preparing bleaching and dyeing liquid; dyeing cloth; carrying out high temperature tentering; and processing so as to prepare the underwear, the sleepwear and the home wear. According to the invention, the fabrics provided by the invention have the obvious effects of mite preventing, mosquito preventing, anti-bacterium, deodorization, rot resistance, itching relieving, blood circulation invigoration and meridians activation and the like; the repellent rate of dust mite is as high as 99 percent; the repellent rate of mosquito is 95 percent; the repellent rate of termite is 95 percent; fabric-touching pathogens such as staphylococcus aureus, staphylococcus epidermidis, gonococcus and esherichia coli and the like can be completely killed; all efficacies of the fabrics still reach to over 97 percent after the fabrics are washed for 50 times; and the fabrics have the advantages of no irritation to skin, no anaphylactic reaction, no toxicity to the human body, comfort for wearing and can effectively prevent the infection of asthma and other diseases.

It is intended to provide an air purification filter which has a high dry tensile strength, a high wet tensile strength in association with a high water resistance and a high water repellency and exhibits a bactericidal effect due to a gas phase reaction in a gas phase. Namely, an air purification filter having a high dry tensile strength, a high wet tensile strength (a high water resistance) and a high water repellency as well as a bactericidal effect which is obtained by blending a filter fiber having a functional group with a mixture of a modification enzyme which has an ionic polarity opposite to the ionic polarity of the whole filter fiber as described above and a bactericidal effect with an ionic synthetic resin binder having the opposite ionic polarity similar to the modification enzyme.

The present invention provides a stretchable film including: a cured product of a composition which contains (A) a poly(meth)acrylate compound having a polymerizable double bond and a siloxane bond, (B) a (meth)acrylate compound having a urethane bond, and (C) an organic solvent having a boiling point in the range of 115 to 200° C. at atmospheric pressure; wherein the component (A) is localized in the direction of the surface of the film. The stretchable film of the present invention is excellent in stretchability and strength as well as repellency on the film surface.

The invention discloses a high-toughness haydite concrete and a preparation method thereof. The high-toughness haydite concrete is prepared from the following raw materials in parts by weight: 320-360 parts of cement, 40-80 parts of lithium slag powder, 20-40 parts of silica fume, 700-900 parts of regenerated coarse aggregate, 500-800 parts of haydite, 3-4 parts of water reducing agent, 100-120 parts of water, 10-20 parts of polyacrylate, 20-30 parts of toughening additive, 0.05-0.1 part of sodium gluconate and 10-15 parts of triethanolamine. A modified composite carbon nano material, activated wood meal and isotactic polypropylene are combined to prepare the unique toughening additive under the surface modification actions of a coupling agent and a compatilizer; and the toughening additive can be sufficiently dispersed in the concrete to effectively display the synergic toughening effect of the materials, so that the prepared concrete has the advantages of favorable toughness, favorable fatigue resistance, favorable isotropy, favorable impact resistance, favorable earthquake resistance and favorable crack resistance.

The invention relates to hydroxyapatite overlength nanowire flameproof paper with a waterproof function. The hydroxyapatite overlength nanowire flameproof paper with the waterproof function has super-hydrophobicity and fireproof and flame-retardant functions. The main component of the flameproof paper is hydroxyapatite overlength nanowire. The product also contains fatty acid salt or a perfluorinated compound modified on the hydroxyapatite overlength nanowire. The fatty acid salt or the perfluorinated compound carries out surface modification on the hydroxyapatite overlength nanowire. As hydroxyapatite overlength nanowire has rich surface reactive groups, the hydroxyapatite overlength nanowire is easy to undergo surface modification. Thus, the hydroxyapatite overlength nanowire is easy to combine with the fatty acid salt or the perfluorinated compound such that the hydroxyapatite overlength nanowire flameproof paper is endowed with an excellent waterproof function.

This invention relates to a mosquito- repelled antibiosis latex paint and its production process. According to weight it includes 97 tp 98% latex paint and 2 to 3% hygienic finishing agent. The latex paint is composed by water, 7 to 10% styrene / acrylate copolymerization latices, 7 to 10%pigment, 38 -45% inert pigment, 12 to 23% accessory ingredient. Hygienic finishing agent is composed by 99.5 to 100% technical grade spin additive and 0 to 0.5% plant extractant. It first mix water, accessory ingredient, pigment, inert pigment and styrene / acrylate copolymerization latices, then add hygienic finishing agent and averaging, regulate pH 7.5 to 8.5, then gain product. This latex paint has dual efficacy of expelling and killing mosquito, and antibiosis function, reach Class A stand ard of GB17322.1 - 1998 stated.

The invention relates to a long-acting mosquito expelling gel and belongs to the field of daily chemical goods. The long-acting gel comprises an A phase, a B phase and a C phase in percentage by weight: the A phase: 40.00 to 60.00 percent of deionized water, 0.20 to 1.20 percent of carbomer resin, 0.05 to 1.00 percent of hydroxypropylmethyl cellulose and 0.01 to 1.00 percent of disodium EDTA; the B phase: 10.00 to 30.00 percent of alcohol, 10.00 to 25.00 percent of dimethyl phthalate, 0 to 10.00 percent of geranium extract and 0.01 to 1.00 percent of menthyl lactate; and the C phase: 0.10 to 1.00 percent of diisopropylamine. The long-acting mosquito expelling gel has a mild formulation, comfortable coating feel, is fresh and not sticky, has safe use and remarkable mosquito expelling effect which reaches over 10 hours and meets requirement of medicine specially needed for military.

A mixed coating material includes: a mixed resin comprising an ultraviolet curable resin and a low molecular weight tetrafluoroethylene resin; and a hydrofluorocarbon-containing organic solvent, wherein the mixed resin and the hydrofluorocarbon-containing organic solvent are mixed to allow the coating material to have film hardness of 1H or more.

The invention discloses a composite toughened grouting cement mortar and a preparation method thereof. The composite toughened grouting cement mortar is prepared from the following raw materials in parts by weight: 80-100 parts of cement, 120-180 parts of 50-200-mesh fine sand, 20-50 parts of water, 5-10 parts of polyurethane solution, 5-10 parts of epoxy resin emulsion, 10-15 parts of toughening additive, 1.5-6 parts of early-strength admixture, 2-9 parts of methacrylic acid, 2-6 parts of calcium formate, 2-8 parts of neopentyl glycol, 0.2-0.8 part of sodium dodecyl benzene sulfonate and 0.9-2.4 parts of water reducing agent. A modified composite carbon nano material, activated wood meal and isotactic polypropylene are combined to form the unique toughening additive under the surface modification actions of a coupling agent and a compatilizer; and when the toughening additive is used for preparing the cement mortar, the prepared cement mortar has the advantages of favorable toughness, favorable fatigue resistance and favorable isotropy, and is beneficial to enhancing the crack resistance of the grouting mortar and reducing the engineering maintenance cost in the later period.

The invention discloses a lyophobic super-lubricant interface and a preparation method thereof. The lyophobic super-smooth interface is prepared by the steps of: by taking a 7075 aluminum alloy as a substrate, performing surface corrosion in an ultrasonic treatment state with nitric acid to form micro-nano structures; performing surface grafting with fluoroalkyl silane; and finally injecting a perfluoro lubricant into the micro-nano structures. The lyophobic super-lubricant interface disclosed by the invention is prepared by using a structural metal 7075 aluminum alloy which is widely applied. The prepared lyophobic super-lubricant interface has excellent repulsive interaction to water, oil and hexane with extremely low surface tension, and has a wide application prospect in the field of construction, machine manufacturing, aerospace, navigation and the like.

The invention discloses a preparation method of amphoteric cellulose ether for drilling fluid, and belongs to the technical field of cellulose ether preparation. The preparation method comprises the steps: firstly, under an alkaline condition, cationic hydroxyethyl cellulose ether is obtained by etherification reaction of active hydroxyl on a molecular chain of hydroxyethyl cellulose and epoxy chloropropane, and then a viscous filtrate, namely 3-chloro-2-hydroxypropyl dimethylammonium acetate, is prepared, so that the motion resistance of water molecules is increased, and the cellulose ether has an excellent water loss reduction function in the drilling fluid; the number of anion groups in the amphoteric cellulose ether and the number of cation groups in the amphoteric cellulose ether areroughly equal, the electrostatic interaction force in the molecular chain is only electrostatic attraction force, resulting in contraction of polymer molecules, decrease of the hydrodynamic volume anddecrease of the viscosity of a solution, so an obvious antipolyelectrolyte solution behavior is showed, a large consistence can be still kept when the water content in the drilling fluid is high, andthe permeability of a salt solution is weakened, so the salt tolerance of the amphoteric cellulose ether in the drilling fluid is improved, and the prospect of application is broad.

The invention relates to an anti-mosquito finishing method for a textile. The method comprises the following steps: (1) cleaning Chinese herbal medicines and removing impurities, adding water and decocting, and filtering to obtain liquid medicine and primary decoction dregs; (2) drying the primary decoction dregs, soaking with absolute ethanol with the weight 1-2 times that of the primary decoction dregs, and filtering to obtain extract and secondary decoction dregs; (3) mixing the liquid medicine and the extract, and adding bamboo vinegar and essential oil, thus obtaining finishing liquid; and (4) soaking the textile in the finishing liquid, then carrying out padding treatment, wherein pickup is 50%, then prebaking the textile subjected to the padding treatment, then baking, then washing,and drying. The textile finished by adopting the method provided by the invention has good effect of repelling mosquitoes, insects and flies, adopts natural raw materials, contains no chemical additive, is safe and harmless to human body and nonirritant to skin, produces no bad effect on physical indexes such as strength and hygroscopicity of a braided fabric and can be widely applied to beddings, mosquito nets, decoration fabrics such as curtains, clothing and military braided fabrics.

The invention discloses an additive for toughening concrete and a preparation method thereof. The additive comprises the following raw materials in parts by weight: 1-2 parts of a modified composite carbon nano-material, 35-40 parts of wood powder with activating treatment, 18-23 parts of isotactic polypropylene, 100-150 parts of water, 2.5-3.5 parts of a coupling agent, 3-5 parts of a filling material, and 2.2-3.2 parts of a compatilizer. The modified composite carbon nano-material, the wood powder with activating treatment and the isotactic polypropylene are combined, and a unique composite system is formed by a surface modification effect of the coupling agent and the compatilizer; the prepared additive can be fully dispersed in concrete, the synergistic toughening effect of the material is effectively performed, so that the prepared concrete has the advantages of good toughness, fatigue resistance and isotropy; and the additive is a high performance adding material for toughening concrete.

The invention relates to a life reagent-resistant pressure-sensitive adhesive composition and a preparation method of a life reagent-resistant adhesive tape. Through adoption of a soft rubber elastomer polymer modified by a strong polar material and due to good repellency to non-polar greases and solvents, the resistance of pressure-sensitive adhesive coating to life reagents in life can be effectively improved, and the low temperature resistance is relatively good; through adoption of a strong polar tackifying resin system, by virtue of the strong polarity thereof and the insolubility thereofin some solvents, the life reagent resistance of the whole pressure-sensitive adhesive is enhanced again while the whole adhesive system is tackified; the whole rubber elastomer is further crosslinked into a network shape in a thermal crosslinking way, so that the crosslinking density is improved, the intermolecular space is reduced, erosion of life reagent molecules into the adhesive is effectively hindered, and the life reagent resistance of the adhesive is further improved.

The present invention provides methods of conducting emulsion polymerizations and dispersion resulting therefrom. The present invention additionally provides substrates coated or treated with polymeric dispersions.

Methods of enhancing stain resistance of fibers, carpet yarns and carpets are disclosed. Treating compositions used to enhance the stain resistance of fibers, carpet yarns and carpets are also disclosed.

The invention relates to a low-residue salt-tolerant fracturing fluid preparation method, and belongs to the technical field of fracturing fluid preparation. The preparation method comprises: mixing dimethylallylamine, chloroacetic acid and a sodium hydroxide solution to obtain a light yellow viscous liquid, introducing chlorine gas into the light yellow viscous liquid, carrying out heating distillation, adding anhydrous ethanol, cationic hydroxyethyl cellulose, river sand and an encapsulation gel breaker, and carrying out a stirring reaction to obtain the low-residue salt-resistant fracturingfluid. According to the present invention, the amphoteric cellulose ether in the fracturing fluid can effectively weaken and prevent the free water molecules in the aqueous fracturing fluid from hydration on the surface of the fracturing fluid particles and the pigment so as to improve the hydration dispersibility of the guar gum, completely break the gel and reduce the residue; the used guar gumcan improve the static viscosity of the aqueous fracturing fluid by rapidly hydrating with the water molecules through hydrogen bonding; and a large number of the cationic groups have good repellencyto the metal cation, such that the fracturing fluid has good salt-tolerant stability and has broad application prospects.