50results about How to "Excellent film hardness" patented technology

The invention relates to a composition for protecting metal surfaces, in particular to a preparation method of an environmentally friendly anticorrosive fingerprint resistant paint for metal surfaces. The composition contains an A component and a B component, the A component takes waterborne epoxy resin as a matrix resin and nano-silica, a silane coupling agent, microcrystalline wax disperse liquid, zirconium complex, deionized water, defoamer and a levelling agent are added, thus obtaining the A component; the B component contains a waterborne epoxy modified amine curing agent and a certain quantity of epoxy curing promoter. The two components are mixed and stirred evenly at a ratio of 4:1 to 3:1 to form the environmentally friendly anticorrosive fingerprint resistant paint for metal surfaces. After coating, metal can be heated by going through a baking channel at a certain temperature, the film forming time can be controlled by adjusting the heating period and finally a transparent coating layer which has quite good anticorrosive protection function over metal and fingerprint resistant function is formed.

A process for producing a room temperature vulcanizable organopolysiloxane composition comprising:

(A) 100 parts by weight of a diorganopolysiloxane having in one molecule at least two hydroxyl groups and/or hydrolyzable groups connecting to silicon atoms;

(B) 0.2 to 10 parts by weight of an alkylene oxide compound having silicon atoms in a molecule;

(C) 0.5 to 100 parts by weight of a silica; and

(D) 0.5 to 30 parts by weight of a silane and/or condensate of partial hydrolyzate thereof,

wherein said process comprises steps of hot-mixing component (A), component (B), and component (C) together, and subsequently mixing component (D) thereto.

The invention discloses poly urethane (PU) polyurethane paint capable of being forcedly dried and used for woodware big table-board coating and contains components by weight: 60-80 parts of alkyd resin, 5-20 parts of fillers, 15-25 parts of solvent, 0.1-0.3 part of defoaming agent, 0.1-0.3 part of flatting agent, 0.5-1 part of anti-settling agent, 35-45 parts of toluene diisocynate (TDI) affixture, 45-55 parts of TDI trimer and 5-10 parts of polyurethane -level solvent. The PU polyurethane paint capable of being forcedly dried can be forcedly dried at the temperature of 50 DEG C without having prickly heat and hidden bubbles easily, and greatly improves coating efficiency and effect of the PU polyurethane paint.

The invention provides a waterborne polyurethane emulsion with flexural endurance and a preparation method thereof. The emulsion comprises water and resin. The resin contains the following reaction components: aliphatic diisocyanate, aromatic diisocyanate, polyester polyol, polyether polyol, a hydrophilic chain-extender, a short-chain chain extender and a post chain extender. The preparation method comprises the following steps: letting polyether polyol react with aromatic diisocyanate to obtain a component A; letting the component A react with aliphatic diisocyanate and polyester polyol to obtain a component B; adding the hydrophilic chain-extender into the component B and reacting, adding the short-chain chain extender and reacting, cooling to 50 DEG C below, adjusting pH value and viscosity, adding water, and carrying out an emulsion reaction to obtain the waterborne polyurethane emulsion with flexural endurance. By preferentially carrying out a reaction between polyether polyol and aromatic diisocyanate, adverse effects of system hyperviscosity and solidification due to high crystallinity of aromatic diisocyanate are avoided.

A binder composition for polyester type films showing superior transparency, film hardness and solvent resistance as well as superior adhesion to polyester type films and an optical film using the composition are provided. The binder composition for polyester type films of the present invention contains a high-molecular weight polymethyl methacrylate (a), an acrylic polyol (b), an isocyanate type curing agent (c), and a polyester resin (d). The optical film of the present invention is an optical film including a polyester type film and a functional layer provided on the polyester type film, the functional layer containing a high-molecular weight polymethyl methacrylate (a), an acrylic polyol (b), an isocyanate type curing agent (c), and a polyester resin (d).

The invention discloses environmentally-friendly white flat lacquer for furniture and a preparation method thereof. The environmentally-friendly white flat lacquer comprises, by weight, 40-60% of a fluorocarbon-modified acrylic acid emulsion, 10-20% of a polyurethane emulsion, 15-20% of titanium dioxide, 4-9% of a film forming assistant and 4-16% of water. The environmentally-friendly white flat lacquer improves the traditional formula, improves hardness of a film of the existing aqueous furniture paint, improves after-tackiness resistance, greatly shorts drying time, is nontoxic and environmentally friendly, can be directly constructed, is beautiful, reduces labor intensity of a worker, does not influence health of the worker, has advantages of the furniture paint, utilizes water as a main solvent, avoids non-renewable resource wasting and belongs to an energy-saving environmentally-friendly product.

The invention discloses an anti-color-infiltration red oak two-component aqueous woodware coating structure, which sequentially comprises a two-component aqueous woodware sealing primer coating, a two-component aqueous woodware burnishing primer coating and a two-component aqueous woodware topcoat coating on a red oak substrate surface, wherein the two-component aqueous woodware sealing primer, the two-component aqueous woodware burnishing primer and the two-component aqueous woodware topcoat respectively comprise a main agent, a curing agent and water. According to the present invention, eachlayer of the structure comprises the two components of the acrylic acid dispersion containing the OH functional group and the aqueous curing agent containing the NCO functional group, wherein the densely-cross-linked structure of the two-component system can barrier and block the pigment tannic acid of the red oak substrate, such that the problem that the infiltration of the tannic acid in red oak can cause the discoloration of the paint coating film can be solved; and the sealing primer coating and the burnishing primer coating have characteristics of strong adhesion and easy burnishing, andthe topcoat coating has characteristics of good smoothness, good flatness, scratch resistance, good paint film hardness and excellent stain resistance.

The invention discloses a surface anti-dirty treatment composition containing tetrafluoroethylene derived hydrofluorother. The surface anti-dirty treatment composition is prepared from, by mass, 0.01-19.99 parts of comb typperfluorinated polyether, 0.01-19.99 parts of trimethoxysilane-terminated perfluorinated polyether, 0-5 parts of other siloxane or perfluorinated polyether, 80-99.9 parts of tetrafluoroethylene derived hydrofluorother, wherein the total mass fraction of the comb typperfluorinated polyether, the trimethoxysilane-terminated perfluorinated polyether, other siloxane or perfluorinated polyether and the tetrafluoroethylene derived hydrofluorother is 0.1-20 parts. The surface anti-dirty treatment composition is excellent in anti-dirty performance and good in durability, the adopted tetrafluoroethylene derived hydrofluorother replacing a solvent is safe, environment-friendly and excellent in dissolving property, and the cost is reduced greatly.

The present invention provides the following invention: a coating composition containing a hydroxyl-group-containing resin (a), barium sulfate (b) having an average particle size of 0.01-2.0 [mu]m, acolor pigment (c), a polyisocyanate compound (d) having a viscosity at 25 degrees centigrade of 150-800 mPa.s, and a silane coupling agent (e), wherein the water-based coating composition contains 1-50 parts by mass of barium sulfate (b), 1-100 parts by mass of color pigment (c), 10-150 parts by mass of polyisocyanate compound (d), and 0.1-10 parts by mass of silane coupling agent (e) with respectto 100 parts by mass of the total solids content of the hydroxyl-group-containing resin (a).

The invention discloses electric vehicle light snoot coating primer which is prepared from the following raw materials in parts by weight: 10-50 parts of modified alkyd resin, 20-50 parts of modifiedphenolic resin, 20-40 parts of solvent, 0.8-3 parts of a dryer, 0.005-0.015 part of organic silicone oil and 0.1-0.3 part of an anti-skinning agent. The electric vehicle light snoot coating primer provided by the invention has the advantages of stable performance, no pollution, reasonable formula and good performance. The formula is selected while taking full account of factors such as leveling property and adhesion; two kinds of film forming resin, the modified alkyd resin and the modified phenolic resin, are adopted and compounded; the prepared primer has excellent leveling property and heatresistance as well as high drying speed, prevents the generation of shrinkage cavity and ripples and can ensure high gloss and refractive index of a metal coating. Through a synergistic effect of various kinds of components in the formula, a film has excellent adhesion to ABS base material and good film forming hardness while the phenomena of gloss loss and wrinkling of the coating are avoided.