31results about How to "Good oil repellency" patented technology

A turbocharger including means for preventing or reducing coking, particularly following engine shutdown, without noticeably increasing weight or volume of the turbocharger. The turbocharger bearing housing (14) has defined therein a lubrication flow path for bearing lubricant and a lubricant drain gallery (40) below a shaft (20), and in accordance with the invention at least a portion of a wall (42) of the lubricant drain gallery (40) is coated with an oil repellant and/or heat insulating coating (44).

Disclosed is a water- and oil-repellent agent comprising the following fluorine-containing copolymer (A). The fluorine-containing copolymer (A) comprises:

• • (a1) a fluoroalkyl group-containing polymerizable monomer of the formula:
  •  wherein Y is a divalent organic group [for example, an aliphatic group having 1 to 10 carbon atoms, an aromatic or cycloaliphatic group having 6 to 10 carbon atoms, a —SO₂N(R¹)R²— group (in which R¹ is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R² is an alkylene group having 1 to 10 carbon atoms), a —CON(R¹)R²— group (in which R¹ is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R² is an alkylene group having 1 to 10 carbon atoms), or a —CH₂CH(OY¹)CH₂— group (in which Y¹ is a hydrogen atom or an acyl group having 1 to 4 carbon atoms)]; and  Rf is a linear or branched fluoroalkyl or fluoroalkenyl group having 1 to 6 carbon atoms; and (a2) vinylidene chloride.

The invention relates to a water-repellent, oil-repellent, sun-proof, anti-bend torsion and cold-resistant matt-leather-membrane aqueous coating adhesive for textiles and a preparation method of the matt-leather-membrane aqueous coating adhesive. The preparation method comprises the steps of emulsifying isooctyl acrylate, isobornyl methacrylate, glycidyl methacrylate, trifluoroethyl methacrylate, vinyl trimethoxysilane, hydroxypropyl acrylate, fatty alcohol ethoxylate XL90 and dodecyl benzene sulfonate to trigger polymerization, and compounding a thickening agent, namely an associated polyurethane flatting rheological agent, a cross-linking agent, namely terminated isocyanate, a flatting agent, namely polymethyl urea resin and silicon dioxide with the particle size of 2-7 microns, so as to obtain the matt-leather-membrane aqueous coating adhesive.

There is disclosed a fluorooxyalkylene group-containing polymer composition represented by the following average composition formula (1). In the formula, the ratio of the Rf² group is 30 to 75 mole %, relative to a total of all of the terminal groups in the composition, and the fluorooxyalkylene group-containing polymer composition includes a one-terminal hydrolyzable silyl group-containing polymer and a both-terminal hydrolyzable silyl group-containing polymer,

wherein Rf¹ represents a divalent linear fluorooxyalkylene group, A and B represent groups represented by an Rf² group or a group represented by the formula (2), Z represents a divalent to heptavalent linking group having a silalkylene structure or a silarylene structure but no siloxane bond, X represents a hydrolyzable group, and Y is a linking group represented by C_cH_2c or C₂H₄—C_rF_2r—C₂H₄.

The invention provides an elastic antifouling aqueous fluorocarbon exterior wall paint. The paint comprises the following components, by weight, 16-20 parts of water, 15-27 parts of a self-crosslinking elastic acrylic emulsion, 12-22 parts of an aqueous fluorocarbon emulsion, 15-20 parts of titanium dioxide, 12-18 parts of barium sulfate, 4-8 parts of calcined kaolin and 1-1.4 parts of a film forming agent. In the invention, the self-crosslinking elastic acrylic emulsion is treated as a main base material to reach an anti-crack requirement, and the aqueous fluorocarbon emulsion having a good compatibility is matched for modifying to make a paint film having low surface free energy and a good lipophobic property in order to make the formed film compact, so the paint film cannot be polluted by blots, and can be easily cleaned after the blot pollution; and rutile and titanium dioxide are simultaneously combined to improve the weather ability, the chemicals (acid rain, salts and the like) corrosion resistance of the film, so the film has good color and light maintenance properties, thereby the elastic antifouling aqueous fluorocarbon exterior wall paint is a new high-performance elastic antifouling aqueous fluorocarbon exterior wall paint.

The invention relates to a waterproof ventilated membrane for car light. The waterproof ventilated membrane is formed by compounding of three layered structures and comprises a fabric layer, a waterproof ventilated layer and a bonding layer which is arranged between the above fabric layer and the waterproof ventilated layer and is used for connecting the fabric layer and the waterproof ventilated layer. The invention solves defects existing in the prior art. According to the waterproof ventilated membrane for car light, a fabric material and an expanded polytetrafluoroethylene film undergo compounding, laminated water resistance and oil resistance processing so as to obtain a multifunctional high-molecular material, thus endowing the expanded polytetrafluoroethylene film with better strength, waterproofness, permeability, oleophobic performance, long life, weldability and the like and maintaining internal and external pressure balance. The waterproof ventilated membrane can be used to raise reliability of many automobile parts, including parts of a car light, an engine controller/anti-lock braking system module, a sensor, a connector, an electric car window motor, a fuel system and the like, and is applied in automobile and heavy trucks. Air exchange can be carried out rapidly according to the pressure variation generated by temperature change, and vehicles can be protected from being polluted by water, automobile discharged fluids and dust.

The invention relates to a nano water-based fluorocarbon insulated elastic exterior wall paint which is characterized by comprising the following components: nano ATO powder, titanium dioxide, calcined kaolin, calcium carbonate, a nano zirconia dispersion liquid, cellulose, a self-crosslinking elastic emulsion, a fluorocarbon emulsion, a covering emulsion, hollow glass microbeads, auxiliary agents, and the balance being water. The paint has the advantages that a paint film has lower surface free energy and is endowed with a good oleophobicity; a paint film formed by adding the self-crosslinking emulsion is more dense so as to make the paint film less susceptible to contaminate by stains, and simultaneously is more easily washed cleanly after being contaminated by the stains; and finally, in cooperation with a proper amount of the hollow glass microbeads, the nano zirconia dispersion liquid, the nano ATO powder and other functional additives, the insulation, anti-cracking and antifouling requirements of people on exterior walls are satisfied, the paint film is not damaged after the stains are washed cleanly, and thus the novel high-performance weather-proof exterior wall emulsion paint is provided for exterior wall decoration.

The invention relates to a cationic fluorine-containing paper oil-proofing agent which is an acrylate high molecular polymer solution containing perfluorohexylethyl on a side chain, wherein the high molecular polymer solution is prepared from 55.0-85.0% of fluorine-containing monomer, 5.0-35.0% of methyl/acrylate monomer, 3.0-10.0% of cationic monomer, 3.0-10.0% of functional monomer and 2.0-10.0% of adhesion reinforcement monomer through copolymerization reaction. The oil-proofing agent provided by the invention has the characteristics of high adhesion, low consumption, favorable oil/water resistance and the like; and by adding the adhesion reinforcement monomer, the fluorine-containing activating agent can be adsorbed on fiber of paper, so that the surface property of the paper fiber is reduced, thereby improving the oil-proofing property of the paper and simultaneously increasing the strength and stiffness of the paper.

The invention discloses a cationic waterborne organic fluorine acrylate polymer as well as a preparation method and application of the cationic waterborne organic fluorine acrylate polymer. The cationic waterborne organic fluorine acrylate polymer is prepared by using a semicontinuous dripping method and taking perfluoroalkyl acrylates and acrylate as main monomers, a reactive unsaturated monomer as a modified monomer, a cationic Gemini surfactant and a nonionic emulsifying agent as an emulsion system and water-soluble azobis(isobutylamidine hydrochloride) as an initiator. The polymer system disclosed by the invention is high in stability, and the emulsion storage stability is not shorter than 12 months. A textile treated by using the emulsion prepared by the invention has better water and oil repellent effects.

The invention provides a surface treatment agent wherein a fluorooxyalkylene group-containing polymer or a fluorooxyalkylene group-containing polymer composition comprising the polymers, which is controlled of a temperature range of vaporization of fluorooxyalkylene group-containing polymer(s). The fluorooxyalkylene group-containing polymer has a fluorooxyalkylene structure represented by —(OCF2)p(OCF2CF2)q— and hydrolysable groups bond to a silicon atom represented by the formula at least one terminal. The polymer composition shows a decrease of 75% or more in weight, relative to the total weight of the polymer, in a temperature range of from 150 to 350 degrees C. when this is heated at a rate of 2 degrees C. per minute and a pressure of 0.1 Pa or less. The present surface treatment agent forms a coating having water- and oil-repellency and scratch resistance regardless of a vapor deposition conditions, in particularly by a vapor deposition at a mild temperature such as 350 degrees C.

The invention relates to a manufacturing method of a multifunctional outdoor protective fabric. Flame-retardant polyester with a high phosphorus content is selected and used as a raw material, and is subjected to vacuum drying and pre-crystallization for 8-12 hours until the intrinsic viscosity is greater than or equal to 0.8 dl/g, high-strength fine-denier short fibers are obtained and are spun to be yarn, and the yarn is stranded, is woven and is subjected to post-processing technologies comprising water proofness, oil repellence, infrared proofness, and the like, so as to enable the multifunctional outdoor protective fabric to have following advantages that firstly, the flame-retardant performance is good: the oxygen index is greater than or equal to 37 percent and the multifunctional outdoor protective fabric is environmentally friendly and is permanent flame-retardant; secondly, the water-proof performance is good: the hydrostatic pressure is greater than or equal to that of 60 cm water column; thirdly, the oil-repellent performance is good: the oil-repellent performance reaches a level of six; fourthly, the infrared-proof performance is good: the wavelength is in the range of 750 nm to 1500 nm, and the transmissivity is in the range of 5.1 percent to 6.6 percent; fifthly, the breaking strength is large: the warp breaking strength of a base cloth is greater than or equal to 2700 N, and the weft breaking strength of the base cloth is greater than or equal to 1800 N; sixthly, the gram weight is greater than or equal to 200g/m<2>, and the multifunctional outdoor protective fabric is convenient to use; and seventhly, the air permeability is good, the water vapor permeability is greater than or equal to 8000g/m<2>.24h, and the multifunctional outdoor protective fabric is comfortable to use.

The invention relates to the technical field of spinning, in particular to a formula and application of washing-free agents for a digital-printing polyester carpet. The formula of the washing-free agents for the digital-printing polyester carpet is characterized by being composed of fluorine-containing acrylate polymer, polybasic carboxylic acid, epoxy curing agents EH and water. The percentage rate of the fluorinated acrylate polymer to the polybasic carboxylic acid to the epoxy curing agents EH to the water is 20 percent to 40 percent: 15 percent to 20 percent: 5 percent to 10 percent: 30 percent to 60 percent. Compared with the prior art, washing-free type printing dye-fixing agents are provided, the fluorinated acrylate polymer is widely applied to finishing agents of fabric, and the fabric has the good oil-repellent, water-repellent and dirt-resistant effects. The polybasic carboxylic acid is also widely applied to wash and wear finishers of the fabric, and it is well ensured that after dried, the fabric cannot be wrinkled and shrink; the epoxy curing agents EH have the good fixation effect, the color of the fabric can be durably preserved, a large amount of soaking time is saved, and subsequent washing processes are omitted.

An oil-repellent coating material composition containing:

(A) an alkoxysilane, represented by the following general formula (1), having a hydrocarbon group to which at least one or more fluorine atoms are bonded;

R^f[—X—Y—SiR¹_a(OR²)_3−a]_m   (1)

wherein

R^f represents an alkyl group, an alkenyl group, or an aromatic hydrocarbon group, the group having at least one fluorine atom and 1 to 20 carbon atoms;

X represents an oxygen atom or a divalent organic group containing an oxygen atom;

Y represents a spacer group (CH(Z)—)_n

wherein Z is a substituent selected from a hydrogen atom, a halogen atom, or a hydrocarbon group having 1 to 3 carbon atoms, and n is of 2 to 8;

R¹ and R² may be the same or different hydrocarbon group(s) having 1 to 10 carbon atoms;

m is 1 or 2; and

a is 0, 1, or 2); and

(B) a condensation catalyst.

The invention discloses a preparation method of a garment made of an anti-fouling and anti-wrinkle fabric. The preparation method comprises the following steps: (1) preparing modified polyamide fibers; (2) blending modified polyamide fibers and polyvinyl acetal fibers to obtain warp yarns, and blending the modified polyamide fibers and viscose fibers to obtain weft yarns; (3) weaving the warp yarns and the weft yarns according to a one-up one-down weaving mode to prepare a rough blank of the garment fabric; (4) carrying out post-treatment on the rough blank of the garment fabric to obtain the garment fabric; and (5) processing the garment fabric to complete the preparation of the garment. Compared with a conventional polyamide fiber fabric, the finally obtained garment fabric has more excellent oil stain resistance and crease resistance.

The invention discloses a mothproof fabric. The mothproof fabric comprises a fabric body of a double-layer fabric structure, the fabric body comprises an inner-layer fabric body and an outer-layer fabric body, the inner-layer fabric body and the outer-layer fabric body are separated woven, and polyurethane fiber yarn of a tucking structure is woven in series. A 2/1 twill weave structure is adopted, and milk protein yarn as warp yarn and bamboo charcoal fiber yarn as weft yarn are woven to form the inner-layer fabric body; a plain weave structure is adopted, and polypropylene fiber yarn as warpyarn and kawo kawo fiber yarn as weft yarn are woven to form the outer-layer fabric body. The warp density of the inner-layer fabric body is 180-210 pieces/10 centimeters; the weft density of inner-layer fabric body is 160-180 pieces /10 centimeters; the warp density of the outer-layer fabric body is 140-160 pieces/10 centimeters; the weft density of outer-layer fabric body is 130-160 pieces /10centimeters. The mothproof fabric wears comfortable, is high in heat retention property and wrinkle resistance and easy to store and has the mothproof function.

The invention relates to a terylene fabric oil-repellent finishing agent and a preparation method, the terylene fabric oil-repellent finishing agent comprises the following components by weight ratio: 4-5 parts of dioctadecyl dimethyl ammonium chloride, 2-4 parts of diethyl phosphate, 7-9 parts of butylene glycol, 3-4 parts of lignin, 2-5 parts of ethyl caproate and 225-235 parts of water. The finishing agent is obtained by stirring and homogenizing the components, and the prepared finishing agent has good oil repellent performance.