77results about How to "Improved wet adhesion" patented technology

This invention relates to a core-shell polystyrene-acrylate copolymer emulsion, which comprises: emulsifiers 0.2-1.5 wt.%, monomers 45-55 wt.%, initiator 0.1-0.3 wt.%,, pH regulator 0.1-0.2 wt.%, and deionized water as balance. The emulsifiers are two or three of anionic emulsifier, nonionic emulsifier and functional allyloxy hydroxypropyl sulfonate emulsifier. The monomers are soft monomer, hard monomer and functional silane monomer containing epoxy groups and oxy groups. The solid content of the emulsion is 48-52%, the glass transition temperature of the core is 25-35 deg.C, and the glass transition temperature of the shell is (-5)-5 deg.C. The emulsion has such advantages as high wet adhesivness of the coating film and high washing resistance of the coating film.

The invention relates to the field of chemical anti-corrosion coatings, particularly to a water-based rust-proof primer with rust and a preparation method thereof. The water-based rust-proof primer with rust uses a vinyl emulsion, a core-shell-structured acrylic emulsion and a phosphate-modified acrylic acid emulsion as base materials. The preparation method comprises the following steps: firstly,selecting the main base material, i.e., the vinyl emulsion; then synthesizing the auxiliary base materials, i.e., the core-shell-structured acrylic resin emulsion and the phosphate-modified acrylic emulsion; and then with the above three emulsions as the base materials, mixing the base materials with a rust conversion agent, an antifreezing agent, a wetting agent, an antifoaming agents and otheradditives to prepare the water-based rust-proof primer with rust. The obtained water-based rust-proof primer with rust is low in VOC content, safe and environment-friendly, convenient to construct, good in compatibility with common anti-corrosion topcoats, good in rust conversion effect, strong in adhesion and long in an antirust period, and has wide application prospects.

The overall performance of water-reducible polymer dispersions, more specifically alkyd dispersions, can be substantially improved by utilizing resins derived from acidolysis reaction products of polyalkylene terephthalates and polyalkylene naphthalates. According to this invention, polymer dispersions can be produced from low acid value polymers and yet have good water dispersibility. When an aqueous coating composition is formulated using the dispersion of this invention, a final coating is formed that has good hydrolytic stability, and when blended with a latex, exhibits improved gloss and wet adhesion.

The present invention generally relates to method of forming a polarizing plate comprising providing two cover sheets each comprising a low birefringence protective polymer film and a layer promoting adhesion to poly(vinyl alcohol)-containing films that comprises a dissolved first poly(vinyl alcohol) having a degree of hydrolysis of at least 98%. A glue composition is applied when bringing the PVA dichroic polarizing film into contact with the cover sheets, the glue composition comprising a dissolved second poly(vinyl alcohol) having a degree of hydrolysis of at least 98% in combination with crosslinking agent.

The invention discloses a solvent-free epoxy glass flake coating for sea splash zone steel structures and a preparation method thereof. The coating is composed of a component A and a component B. The component A comprises a bisphenol A epoxy resin, a hydrogenated bisphenol A epoxy resin, a reactive diluent, a defoaming agent, a leveling agent, a wetting and dispersing agent, a thickening thixotropic agent, a silane coupling agent, an ultraviolet absorbent, a salt-mist-resistant aid, titanium white, ferrophosphorus powder, mica powder, an antirust filler, 160-mesh glass flakes and 325-mesh glass flakes. The component B comprises a modified polyamide curing agent, a modified phenol formaldehyde amine hardener and an adhesion promoter. The coating is a solvent-free product, and has the advantages of environment friendliness, no toxicity and favorable constructability. The paint film has the advantages of favorable corrosion resistance, favorable seawater immersion resistance, favorable aging resistance and favorable cathodic disbonding resistance.

The present invention provides a hot melt adhesive suitable for use in disposable products, which can be applied at a high speed and provides excellent in adhesion in a wet state and low-temperature coating, with little odor. The hot melt adhesive for disposable products comprises: (A) a propylene homopolymer having a melting point of 100° C. or lower obtained by polymerizing propylene using a metallocene catalyst; and (B) a wax modified with carboxylic acid and/or carboxylic acid anhydride. The wet adhesion of the hot melt adhesive is improved when the wax is modified with maleic acid and/or maleic anhydride.

Disclosed herein are coating agents and methods of manufacturing coated products with such coating agents. The disclosed coating agents may include at least one resin, at least one filler selected from the group comprising natural mineral and synthetic mineral, and at least one chemical agent, wherein the at least one chemical agent is at least one pigment selected from the group comprising inorganic pigment and organic pigment.

The invention relates to an epoxy coating and its preparation method. The coating provided by the invention comprises a component A and a component B, wherein the component A comprises 20-35 wt% of an epoxy resin liquid, 4-15 wt% of a phenolic resin liquid, 4-15 wt% of a petroleum resin liquid, 1-7 wt% of an anti-settling agent, 20-50 wt% of a filler, 4-15 wt% of a pigment, 5-20 wt% of a solvent and 0.3-5 wt% of a cosolvent; the component B comprises 30-80 wt% of a curing agent and 20-70 wt% of a solvent; and the mass ratio of the component A to the component B is 10-1:1. The coating provided by the invention has a light color, is suitable for a priming paint and a finishing coat, and has good waterproof and antirust properties.

The invention relates to a method for improving surface energy of an aluminum plate by using a plasma, which is characterized in that a plasma generating device is used for generating the plasma, andactivation treatment of the surface of the ordinary aluminum plate is implemented by leading the ordinary aluminum plate to pass through the plasma, so as to achieve the purpose of improving the surface energy of the aluminum plate, then ink is jetted on the surface of the aluminum plate after treatment, and the ordinary aluminum plate refers to an aluminum alloy plate which leads the surface to form dense sand meshes by the technologies of electrolytic coarsening and anode oxidation. The method has the advantages that the uniformity of the surface treatment is good, the method has the roles of surface cleaning and etching and can increase the contract specific surface area and improve the wetting adhesion and the spreadability, a coating layer can be very thin, the method does not have the problems of uncoating and uneven coating and simultaneously avoids the negative impacts on the surface appearance of the plate due to the use of a surfactant, the surface treatment is directly carried out on the surface of a sand mesh layer, the method does not use an intermediate layer, active particles can generate strong chemical bonds, improve the adhesion and lead the press run of a produced printing plate to be high, the production cost is low and the treatment speed is fast.

The invention relates to a cathode of lithium battery and relative battery. Wherein, said cathode comprises collecting element, and the cathode material coated and/or filled in collecting element; said cathode material comprises cathode active component and adhesive; said adhesive comprises carboxyl polymer; the adhesive contains epoxy silane. The inventive battery has better circulate property.

Belonging to the technical field of zinc-rich primer curing agents, the invention discloses a waterborne two-component zinc-rich special epoxy curing agent and a preparation method thereof. The methodincludes the steps of: (1) preparation of a first curing agent: a. reacting polyethylene glycol with epoxy resin under a catalytic condition to obtain an epoxy-terminated polymer; b. in a nitrogen atmosphere, putting acid anhydride into a special amine component for ring-opening reaction; c. adding a basic amine component into a product of the ring-opening reaction, and carrying out amine esterification reaction to obtain an amide polymer; and d. putting the epoxy-terminated polymer into the amide polymer, and adding an end-capping reagent for end capping to obtain the first curing agent; and(2) preparation of a second curing agent: under a catalytic condition, subjecting oleic acid and basic amine to dehydration polymerization into low molecular weight polyamide, thus obtaining the second curing agent. The curing agent provided by the invention can cooperate with waterborne epoxy resin to generate a paint film, which has the characteristics of good wet adhesion and excellent salt spray resistance, thus having good application prospects.

The invention provides an oil stain-resistant and antirust water-based modified acrylic iron red primer and a preparation method thereof. The primer comprises, by mass, 22.5-30% of a water-based acrylic emulsion, 3-10% of a waterborne epoxy ester resin, 0.25-0.5 % of a water-based dispersant, 0.2-0.4% of a water-based defoaming agent, 0.1-0.4% of a water-based base material wetting agent, 0.4-0.8% of an anti-flash rust agent, 5.3-10.1 % of deionized water, 3-6% of a film-forming additive, 0.2-0.4% of a drier, 0.3-0.5% of organic bentonite, 0.3-0.5% of fumed silica, 10-15% of iron oxide red, 27-32% of coarse whiting, 4-7% of water-based zinc phosphate, 3-5% of sericite, 3-4% of water-based aluminum phosphate and 0.2-0.4% of a water-based thickener. The product disclosed by the invention has the characteristics of good substrate oil stain resistance, good wetting adhesion on an oily repaired workpiece, and good wetting adhesion on a smooth curved surface, and a thick film formed by theproduct has the characteristics of no cracking, excellent impact bending resistance, good freeze-thaw resistance stability, good water resistance, excellent corrosion resistance, good heat resistanceand excellent adhesion; and the product can be widely applied to the fields of various large steel structures, automobile chassis paints, automobile water tanks, train chassis paints and engineering machines.

The invention provides a waterborne binder, comprising components A and B; the component is made from, by weight, 40-60 parts of waterborne epoxy acrylic emulsion, 22-48 parts of a pigment-filler, 1-2parts of a film-forming agent, 2-3 parts of an aid, and 12-30 parts of water; the component B is made from, by weight, 3-4.5 parts of a curing agent. The waterborne binder is applicable to containerprimers, has the same effect as oil primers to protect the integrity of container bodies, has excellent wet adhesion, pull adhesion and pull strength, has an equivalent active cycle to oil primers, has good resistance to salt fog, is green, and never causes a reduction to the customers' existing production rhythm.

The invention discloses a moistening bonding type dust-control graft modification inhibitor and a preparation method thereof, and relates to the technical field of dust depressors and preparation thereof. The inhibitor is prepared from, by weight, 1-2% of sodium-based bentonite, 1-2.5% of itaconic acid, 4-5% of acrylic acid, 0.15-0.2% of N,N'-methylene bisacrylamide, 0.0375%-0.04% of potassium peroxodisulfate, 0.15-0.25% of lauryl sodium sulfate, 0.5-1.5% of fatty alcohol-polyoxyethylene ether, 0.25-0.3% of sodium hydroxide and the balance water. The sodium-based bentonite serves as a raw material, the itaconic acid and the acrylic acid serve as monomers, and resin is formed after polymerization and has the functions of thickening and adsorption. The inhibitor can improve the dust suppression efficiency and improve the dust concentration of a working surface in a coal mine.

The invention relates to a process for the multilayer coating of substrates, in particular vehicle bodies and vehicle body parts, comprising the steps:

• • 1. applying a filler layer of a filler coating composition onto an optionally pre-coated substrate, 2. applying a base coat layer of a water-based base coat coating composition containing color-imparting and/or special effect-imparting pigments onto the filler layer, 3. applying a clear coat layer of a transparent clear coat coating composition onto the base coat layer and 4. curing the clear coat layer, optionally together with the filler layer and/or the base coat layer, wherein the filler coating composition being an organic solvent-based coating composition comprising:
    • A) at least one binder with functional groups containing active hydrogen,
    • B) at least one polyisocyanate cross-linking agent with free isocyanate groups and
    • C) at least one epoxy-functional silane of the general Formula (I):

The invention relates to the field of coatings, and discloses a double-component waterborne graphene epoxy zinc-rich coating. The coating comprises a component A capable of being cured into a film anda component B containing a curing agent, wherein the component A is prepared from the following raw materials in parts by weight: 40-50 parts of epoxy resin emulsion, 1-2 parts of expanded graphite,20-40 parts of deionized water, 1-2 parts of dispersing agent, 0.5-1 wt% of silane coupling agent, 0.2-0.5 part of defoaming agent, 10-20 parts of talcum powder, 5-10 parts of precipitated barium sulfate and 0.1-0.3 part of neutralizer; the component B comprises 10-20 parts of curing agent, 50-70 parts of zinc powder, 10-20 parts of ferrophosphorus powder, 1-4 parts of anti-settling agent and 5-10parts of film forming auxiliary agent; and the component B is prepared from the following raw materials in parts by weight: 10-20 parts of curing agent, 50-70 parts of zinc powder, 10-20 parts of ferrophosphorus powder, 1-4 parts of anti-settling agent and 5-10 parts of film forming auxiliary agent. The coating can meet the use requirement of a steel structure in an outdoor coastal severe environment.

The invention relates to an outdoor elastic fireproof paint and a preparation method thereof. The outdoor elastic fireproof paint comprises the following components: an environment-friendly solvent, rubber elastic resin, flame-retardant amino resin, a dispersant, compound foam powder, fine ammonium polyphosphate powder, titanium pigment, melamine powder, a flame retardant aid, wood cellosilk and hollow perlite fillers. By mixing and matching the rubber elastic resin with the flame-retardant amino resin, the outdoor elastic fireproof paint has ultrahigh water resistance and excellent wet adhesion, weather resistance, elasticity and tensile strength, the condition that the construction is canceled because of raining is reduced, a coating cannot be damaged by the washing of rainwater, and the limitation of construction conditions is avoided; by imitating an actual construction process and a long-term raining condition, the paint is brushed three times continuously to obtain a paint coat with the thickness of 900 microns, and the paint coat which is not completely dried cannot be damaged after being washed by rainwater uninterruptedly for five days and five nights; the paint also has chemical resistance, so that the outdoor use and the durability are guaranteed, and the service life of the outdoor elastic fireproof paint is long.

The invention discloses a water-based adhesive primer and a preparation method thereof. The water-based adhesive primer comprises a component A and a component B, wherein the component A is prepared from a water-based modified epoxy emulsion, a color filler, mica powder, an anti-rust pigment, a coalescing agent, an auxiliary agent and water; and the component B comprises a waterborne epoxy curingagent. Compared with the prior art, the water-based adhesive primer disclosed by the invention has an activation period equivalent to that of oil-based primer, is good in salt spray resistance and isenvironment-friendly; and the existing production and engineering construction rhythm of customers is not influenced; the preparation method provided by the invention is simple in process, manual construction cost of customers is reduced greatly, and the preparation method is suitable for industrial mass production.