28results about "Leather surface finishing" patented technology

An aqueous coating composition comprising an aminosiloxane ester copolymer, an acrylic or polyurethane polymer, a surfactant, and water. The aqueous coating composition can be prepared by mixing an aqueous emulsion comprising an aminosiloxane copolymer, a surfactant, and water with an aqueous organic binder or dispersion. The aqueous coating composition can be used for leather treatment. The aqueous coating composition can be applied to a leather substrate and dried to remove water, thereby providing a coating on the leather substrate having a low coefficient of friction.

An aqueous matte finish coating composition comprising at least one acrylic dispersion having a plurality of crosslinked particles comprising a plurality of first acrylic particles having a median weight average particle size of 4 microns or less in diameter and a surface Young's modulus of 450 megapascals or greater; a process for producing said aqueous matte coating composition; and a coated substrate coated with a dried coating made using said aqueous matte coating composition.

This invention relates to a method for preparing transparent chrome-tanned leather. The method uses undyed or dyed chrome-tanned leather blanks as raw materials, and prepares a clearing agent solution from monomers, initiators, accelerators, and solvents. The chrome-tanned leather blanks and the clearing agent solution are added to a rotating drum and treated at 10-45°C for 1-72 hours. The leather blanks are then heated and cured at 35-95°C for 1-72 hours, and dried to obtain transparent chrome-tanned leather. The transparent leather prepared by this method inherits the excellent comprehensive properties of chrome-tanned leather, including its chemical, physical, and mechanical properties, and offers diversity in the selection of leather types, thicknesses, and colors, meeting the requirements of different application environments in leather products and other fields. The raw materials used in this method are conventional chrome-tanned leather blanks, and the clearing agent components are also common chemical raw materials, readily available, low in cost, and easily scalable for mass production.

A first treatment plant (100) and a second treatment plant (200) for respectively performing a first and a second surface treatment of a laminar support (1) for producing a multilayer laminar product (6). The first treatment plant (100) provides an outlet winding assembly (114) for winding on a transfer reel (400) the strip of laminar element (4) coupled with the treated laminar support (1), while the second treatment plant (200) comprises at the inlet an unwinding assembly (201) configured to unwind the transfer reel (400) of the first treatment plant (100) so as to perform a second treatment on said laminar support (1).

Disclosed are a fabric treatment emulsion formulation comprising a silicone-(meth)acrylate copolymer, a surfactant, water, and a blocked isocyanate, as well as a method for preparing the same. The fabric treatment emulsion may be used in a method comprising coating a fabric with the emulsion formulation and heating the fabric to dry the emulsion formulation. This method makes the fabric oil-repellent.

Use of an ester to treat surfaces, which are not homecare substrates, provides increased water repellency, reduced friction, or improved visual appearance. The ester is a reaction product of a cyclic

The leather waxing machine of the present invention includes a leather placement platform and a wax heating box. The wax heating box is connected to a wax pump assembly. A waxing brush and a brush driving mechanism are provided on the leather placement platform. The wax outlet of the wax pump assembly extends to the waxing brush. The leather waxing machine also includes a reflux assembly, a reflux driving mechanism, and a pumping assembly. After waxing with this leather waxing machine, before changing the leather, the reflux driving mechanism drives the liquid inlet of the reflux assembly to move below the wax outlet of the wax pump assembly. The reflux assembly receives the wax discharged from the wax outlet and guides it back to the wax heating box. Therefore, when changing the leather, the wax from the wax pump assembly is less likely to drip onto the leather placement platform, thus reducing the risk of contamination. The pumping assembly pumps air from the liquid outlet of the reflux assembly to the liquid inlet. The gas can conduct heat from the liquid outlet of the reflux assembly to the liquid inlet, causing the liquid inlet to heat up and reducing the possibility of the wax solidifying upon contact with cold air when it falls from the wax outlet of the wax pump assembly to the liquid inlet of the reflux assembly.

The application discloses weather-resistant and corrosion-resistant leather and a preparation method thereof, and belongs to the technical field of leather. The weather-resistant and corrosion-resistant leather is obtained by uniformly coating polyurethane finishing agent on the surface of a leather product and performing light curing. The preparation method of the polyurethane finishing agent comprises the following steps: mixing diisocyanate, a catalyst, a cashew phenol grafted mesoporous silica compound and n-hexane, heating, condensing, refluxing and stirring, adding a capping monomer, stirring after temperature reduction, removing n-hexane through rotary evaporation, and obtaining a polyurethane prepolymer; and mixing the polyurethane prepolymer, active monomers, a photoinitiator, an antioxidant, a leveling agent and a defoaming agent, and uniformly stirring to obtain the polyurethane finishing agent. The mesoporous silica compound is mesoporous silica coated lignin-zinc oxide nano powder. The weather-resistant and corrosion-resistant leather improves the weather-resistant and corrosion-resistant performance of the leather product, and improves the service life and stability of the leather product.

The present application relates to the field of leather, and more particularly to a temperature-controlled color-changing leather and a preparation method thereof, comprising a leather layer and a buffer layer, a color-changing layer and a protective layer arranged in sequence on the leather layer; the color-changing layer comprises the following raw materials in parts by weight: modified polyurethane resin 100-120 parts, water-based polycarbonate 15-25 parts, color-changing microcapsules 15-30 parts, heat-conducting filler 2-5 parts, aziridine 1-2 parts, silicone oil 2-3 parts, antioxidant 0.3-0.8 parts, leveling agent 0.2-0.5 parts, thickening agent 0.5-1.5 parts, phase solvent 3-5 parts and dispersant 0.5-1 part. The gradient design of each layer structure, the toughening modification of the material and the strengthening of the microcapsule shell layer solve the core technical problems of poor bending resistance, easy breakage of microcapsules and low production efficiency of the existing temperature-controlled color-changing leather.

A waterborne coating composition comprising an aminosiloxane copolymer, a polyurethane polymer, a surfactant, and water. The waterborne coating composition can be prepared by mixing an aqueous emulsion comprising the aminosiloxane copolymer, surfactant, and water with an aqueous polyurethane emulsion or dispersion. The waterborne coating composition can be used for leather treatment. The waterborne coating composition can be combined with a crosslinking agent, applied to a leather substrate, and dried to remove water, thereby providing a coating with a low coefficient of friction on the leather substrate.

The application discloses a preparation method and application of an antifouling self-extinction water-based polyurethane coating, and utilizes a coordination addition reaction of a carbon-carbon double bond and a silicon-hydrogen bond to prepare an organic fluorosilicon modifier containing active functional groups, which is used as an antifouling modifier for covalent modification of polyurethane, and a self-extinction water-based polyurethane with antifouling function is prepared through reasonable molecular design. The antifouling self-extinction water-based polyurethane coating prepared through the method of the application effectively solves the technical problems of poor compatibility between a physical addition type antifouling additive and a water-based polyurethane matrix, poor migration resistance and poor durability of antifouling effect caused by the problems, and the synergistic effect between fluorine and silicon also enables the coating to achieve excellent antifouling performance under a small amount of fluorine, so that the cost can be effectively controlled.

A method for treating leather to impart stain and oil repellency employs a composition comprising a silicone-(meth)acrylate copolymer. The leather treatment composition is an aqueous emulsion suitable for use on semi-chrome leather and primed leather. The method and composition can also include a silicone polyether to improve coating uniformity, especially when the method will be used to make a top coat on primed leather. The leather treatment composition is free of PFAS.

This utility model discloses a leather dyeing uniform spraying device, including a worktable, a support plate provided on the upper rear side of the worktable, a dyeing box provided on the upper end of the support plate, an adjustment mechanism fixedly connected to the inner bottom wall of the dyeing box, side plates fixedly connected to both sides of the upper end of the worktable, a fixing mechanism detachably connected to one side of the side plate, and a sliding groove provided at the lower end of the dyeing box. The adjustment mechanism allows the device to precisely adjust the height and angle of the spray nozzle according to the different thicknesses and sizes of the leather, thereby achieving uniform spraying of the leather surface; the fixing mechanism allows the device to stably clamp the leather, preventing shaking or displacement during spraying and improving the dyeing uniformity of the leather. When the hydraulic cylinder operates, the telescopic end of the hydraulic cylinder drives the hydraulic rod to extend and retract, which in turn moves the movable frame.

This invention discloses a negative ion antibacterial and formaldehyde-removing leather coating agent and its preparation method, belonging to the field of leather coating agent technology. It can achieve a synergistic effect of three functions: negative ion release, antibacterial, and formaldehyde removal. Based on a multi-level spiky core-shell structure, the effective contact area between tourmaline and air is greatly increased, which can efficiently release negative air ions and optimize the air quality of the environment. At the same time, a dual antibacterial system is constructed, in which zinc-based MOF slow-release zinc ions destroy the bacterial cell structure and tourmaline releases negative ions to oxidize and inhibit bacteria, achieving a broad-spectrum, efficient, and long-lasting antibacterial effect against common pathogenic bacteria such as Escherichia coli and Staphylococcus aureus. In addition, relying on the rich porous structure of zinc-based MOF, formaldehyde molecules are efficiently enriched and adsorbed. Combined with the catalytic oxidation and decomposition of formaldehyde by the negative ions continuously released by tourmaline, a long-lasting formaldehyde purification effect is achieved, which completely solves the technical defects of traditional adsorption materials that are easy to adsorb saturate and release formaldehyde twice.

The application discloses a leather finishing aid and a preparation method and application thereof, and belongs to the technical field of leather finishing. The leather finishing aid comprises the following components in parts by weight: water-soluble graphene: 1-3 parts; solid paraffin: 3-8 parts; grease: 5-10 parts; high-grade fatty alcohol: 1-5 parts; thickening agent: 0.2-1 part; emulsifier: 1-3 parts; matt filler: 10-20 parts; modified casein: 5-15 parts; and water: 60-75 parts. The leather finishing aid can effectively avoid the problem of adhesion of stacked leather, improve the tear strength of a coating, and reduce the tensile strength of a coating film. Moreover, the leather finishing aid can obtain leather coatings with different gloss, effectively improve the softness of a coating, endow the coating with a delicate and soft hand feeling, and improve the hiding effect of the coating.

This invention relates to a high-utilization eco-friendly leather manufacturing process using salted wet cowhide as raw material, comprising the following steps: pre-soaking → fleshing → main soaking → enzymatic hair removal → liming → leveling → splitting → deliming → softening → pre-tanning → pickling → main tanning → settling → chromium-free retanning → neutralization → filling and dyeing → fatliquoring → over-dyeing → squeezing and stretching → drying → rewetting → softening → flattening → finishing → finished leather. The wet dyeing and finishing and dry finishing sections of this application employ simplified processes with low filler and oil usage. Due to reasonable formulation, the cost is low, yet the performance is good, meeting production requirements. The addition of a "leveling" step reduces the amount of raw material processed and facilitates processing. The finishing system is water-based, resulting in low VOC generation. Graphene is introduced into the finishing agent, resulting in low coating weight and good coating effect.

This invention discloses a leather edge painting machine with positioning function, belonging to the field of leather edge painting technology. It includes a support base and a drive assembly mounted on the support base for driving a moving component; the moving component moves the leather to a disassembly position for unloading; an edge painting component applies edge painting to the leather; a pressing component presses the leather when the positioning is released; a placement component places the leather; and a positioning component positions the leather during the edge painting process. This invention uses suction cups to place the leather on them, which position it. A second motor rotates the support plate, facilitating the rotation of a rotating plate. The rotating plate then rotates the suction cups, further facilitating the rotation of the leather. At this point, an oiler is activated, delivering oil to an oil outlet, where the edge of the leather contacts the oil outlet for edge painting.

Use of a polyol ester to treat surfaces, which are not homecare substrates, provides increased water repellency, reduced friction, or improved visual appearance. The polyol ester is a reaction product

The utility model discloses a kind of leather roller coating devices for anti-cracking leather production, it includes material collecting box, it has the roller coating assembly for leather double-sided brush coating sizing material being arranged on material collecting box, the stirring assembly for sizing material mixing, and the collection assembly for surplus sizing material recycling, roller coating assembly, including tank, three-head communication pipe fixedly connected in the inside of tank, material collecting hopper fixedly connected in one head of three-head communication pipe, two groups of cavity column rotatingly connected in the outer surface of other two heads of three-head communication pipe by sealing bearing, outer sheath fixedly connected in the outer surface of cavity column. By setting roller coating assembly, the double-sided roller coating operation of dye to leather can be carried out, to effectively improve work efficiency, and cooperate with the setting stirring assembly, the dye inside tank can be stirred, to effectively ensure the uniformity of leather dyeing effect, simultaneously cooperate with the setting collection assembly, surplus dye can be collected, and then effectively reduce the waste of dye.

The present application relates to the technical field of water-based leather treatment agent production, and particularly relates to a temperature adjusting device for water-based leather treatment agent production and a use method thereof, which comprises a temperature adjusting box, a discharge pipe in communication with the bottom of the temperature adjusting box, and an electric heating rod arranged on the surface of the temperature adjusting box, and the surface of the temperature adjusting box is provided with a cooling assembly. The first blade driven by the stirring rod of the worm and the worm wheel cooperates with the gear transmission, realizes radial stirring and axial circulation of the material, the guide cylinder is periodically deflected by the servo motor, the reciprocating screw rod and the swing assembly, the flow direction of the circulation path is dynamically changed, three-dimensional mixing without dead angle is formed, the self-cleaning effect of the cleaning roller on the heat exchange surface and the reinforced heat dissipation of the auxiliary heat dissipation mechanism are combined, the heating and cooling efficiency of the device is greatly improved, rapid, accurate and uniform temperature control of the water-based leather treatment agent is realized, and the product quality and production efficiency are effectively improved.

The application discloses a kind of breathable wear-resistant leather upper materials and preparation method thereof, and the application belongs to leather product technical field field.The material includes ultra-thin wear-resistant coating, grain layer, net-shaped reinforcing layer, leather base from top to bottom successively;The leather base is head layer cowhide, and inside natural collagen fiber is retained through micropore channel;The net-shaped reinforcing layer is dense fiber network formed by acrylic retanning and nano-silicon dioxide compound, and is located on the upper part of leather base;The grain layer retains natural through pore;The ultra-thin wear-resistant coating is water-based polyurethane coating, light and thin and does not block pore.The application has simple structure, breathable stability, high wear resistance, and is suitable for upper use.

This invention discloses a systematic health care kit for automotive interiors and glass, and its usage method, belonging to the field of automotive care product technology. The kit consists of an interior cleaning composition, an interior maintenance composition, and a glass inner anti-UV coating composition. The interior cleaning composition gently and deeply cleans, opening absorption channels for subsequent maintenance; the interior maintenance composition comprehensively restores leather elasticity and luster through a four-dimensional repair mechanism involving hydration and moisture retention, collagen replenishment, tanning agent replenishment, and natural oil replenishment; the glass inner anti-UV coating composition forms a transparent anti-UV film on the inside of the glass, blocking UV rays that cause interior aging at the source. The method of this invention includes three sequential steps: cleaning, maintenance, and coating. These three steps work synergistically, with an overall effect far exceeding the sum of the individual steps. All product raw materials are food-grade or cosmetic-grade, meeting maternal and infant safety standards, suitable for the characteristics of the enclosed space of a car, with a clearly defined usage period, convenient operation, and affordability. This invention delays interior aging from the source, extends the service life of the interior, and improves the healthy environment inside the car, with broad market prospects.

The utility model discloses a kind of spraying devices for leather production, it includes material box, it has the spraying component for being arranged on material box and being used to paint spraying on leather, the clamping component for the fixation of leather, and the driving component for promoting leather spraying effect, spraying component, including fixedly connected in the connecting frame of the outer surface of material box, fixedly connected in the liquid pump of the outer surface of material box, fixedly connected in the liquid inlet pipe of the input end of liquid pump and with material box interior communication, fixedly connected in the hose of the output end of liquid pump, fixedly connected in the hollow plate of the one end of hose far from liquid pump and with hose communication. By setting spraying component, clamping component and driving component, paint in material box interior can be evenly sprayed on both sides of leather, to effectively promote the spraying effect of leather, and excess paint can be collected and reused, to effectively reduce waste, while multiple components only need motor this single power source to drive, energy consumption is low, and practicality is strong.

A leather treatment composition comprising: (I) an organic acrylic binder, (II) an organosilicone-(meth)acrylate copolymer, (III) a surfactant, (IV) water, and (V) an isocyanate. A method for treating leather comprising: (I) applying the leather treatment composition to a surface of a leather substrate, and (II) drying the substrate. The leather treatment composition and method can be used to impart stain-repellent and / or oil-repellent properties to the leather substrate.