79results about "Polyacetal coatings" patented technology

This invention relates to iodonium salts, acetal copolymers and polymer binders comprising functional groups capable of undergoing cationic or radical polymerization, their method of preparation and their use in the preparation of coating solutions and coatings. This invention also relates to coatings containing the iodonium salts, acetal copolymers and/or polymer binders and to negative working lithographic printing plates comprising these coatings.

The invention relates to a protecting paint special for petroleum pipe/drill pipe, and a construction method and a preparation method thereof. The paint is composed of modified acrylic resin and modified alkyd resin as main film-forming substances, formaldehyde resin, chlorinated polyether resin and epoxy resin, etc. as modifiers, nontoxic tinting pigment, nanometer micro powder, environment-friendly solvent, nontoxic excluder pigment, additive, accessory ingredient, etc.; the paint is provided with the following advantages: low cost, good storage stability, not prone to deposit, good application property, strong anti-sagging property, coat flame retarding, good drying and fullness, strong adhesion, weathering resistance, rust prevention, non-toxicity and environment-friendly. The protecting paint special for petroleum pipe/drill pipe is specially designed for short-term antiseptic coat, such as sleeve of petroleum casing pipe, oil well pipe, oil well drill pipe, etc.

Disclosed herein are a composition for forming an organic insulating film and an organic insulating film formed from the composition. The composition comprises an insulating polymer having a maleimide structure, a crosslinking agent and a photoacid generator so as to form a crosslinked structure. The organic insulating film has excellent chemical resistance to organic solvents used in a subsequent photolithographic process and improves the electrical properties of transistors.

A high-density polyoxymethylene resin composition that comprises polyoxymethylene; at least one coated mineral selected from zinc oxide, barium sulfate, and titanium dioxide; and at least one thermal stabilizer.

The invention belongs to the field of antibacterial polymer materials and a processing method thereof, and particularly relates to a polyaniline composite antibacterial plastic as well as a preparation method and application thereof. The antibacterial plastic comprises a polyaniline main material and a polymer basis material, various forms of polyaniline or composite materials thereof, which are used as main antibacterial materials, and then are blended with other polymer basis materials, and then injection molding, blow molding, mould pressing, foaming and other plastic molding processes are carried out to obtain the polyaniline composite antibacterial environment purification material; and at a normal temperature, polyaniline can be dissolved or dispersed by solvents, and surface treatment is carried out on the plastic by being mixed with other polymers, for example, antibacterial antifouling and anticorrosive coatings and the like are manufactured through spray molding, casting, film painting, electrochemical deposition and other processes. The polyaniline composite material not only has an excellent antibacterial effect on escherichia coli, staphylococcus aureus, Candida albicans and the like, but also can be used as the environment purification material by utilizing the oxidoreduction characteristic to realize the removal of methanal, hydrothion, pollutant and other gases to keep the air fresh.

The invention discloses a composite nano coating for oil casing threads. The composite nano coating comprises the following components: film-forming resin, an organic solvent, nano lubrication packing, a dispersing agent and a defoaming agent. A preparation method comprises the following steps: 1) uniformly mixing the nano lubrication packing and the dispersing agent; 2) grinding the mixture and the organic solvent, and uniformly mixing; 3) adding the film-forming resin, and uniformly mixing; 4) continuously adding the solvent till appropriate concentration, and uniformly mixing; and 5) sealing and storing the prepared coating. The use method of the coating comprises the following steps: 1) pretreating the oil casing threads, including decontamination, degreasing, washing with water, pickling and sand blasting or phosphorization; 2) coating or spraying the uniformly mixed coating on the surfaces of the threads; and 3) curing the coating at the room temperature. The composite nano coating disclosed by the invention is simple in preparation process, convenient to construct and low in cost, thread gluing is effectively avoided, and the threads are prevented from corrosion.

The invention discloses a coating of a device for desulfurization of the flue gas, denitrification, and dust abatement, which is a high performance industrial anti-corrosion coating applicable to harsh conditions like an acid gas environment, etc., and is characterized by excellent permeability for anti-corrosion medium, fine wear resistance, good cohesiveness between a lining and a substrate, and good temperature upheaval-resistance. The coating is applicable to the protection of a chimney inwall provided with a desulfurating device. An approach convenient and easy to be popularized is provided for issues like desulfurization of the flue gas, denitrification, dust abatement and anti-corrosion, etc. The technique has a good effect when being adopted on devices for desulfurization of the flue gas, denitrification, and dust abatement.

Thermoset compositions useful for dampening vibrations at elevated temperatures are disclosed. The thermoset compositions may have a glass transition temperature of 150 DEG C or greater, a tan d peak of 0.2 or greater, and a tan delta peak width measured at half-height larger than about 40 DEG C, each as measured by dynamic mechanical thermal analysis (DMTA) at a frequency of 1 Hz. The thermoset compositions may be used to dampen vibrations at temperatures in excess of 100 DEG C.

The invention discloses a novel water-based PTC electrothermal coating, and a preparation method thereof. The novel water-based PTC electrothermal coating is composed of a conductive carbon material,a polymer micro powder, an auxiliary agent, an aqueous bonding resin, and water; wherein the polymer micro powder is a low vitrification point thermoplastic polymer powder. The preparation method comprises following steps: the polymer micro powder is subjected to high speed shearing under the auxiliary action of a dispersant so as to form a stable uniform resin dispersion slurry in the bonding resin system, and nanocarbon conductive slurry processed through grinding dispersion is mixed with the auxiliary agents, and mixing and defoaming are carried out so as to obtain a coating finished product. According to the preparation method, solidification-softening conversion of the low vitrification point thermoplastic polymer powder in thermal circulation is adopted to realize volume expansion, and drive the change of a nanocarbon conductive network, so that the coating internal resistance is changed, positive temperature resistance (PTC) effect is achieved, regulation and control on electrothermal coating frequency is realized.

A phosphorus-acid-group-containing (meth)acrylamide polymer having high electrolytic group density and excellent conductivity is obtained by introducing a phosphorus acid group into a (meth)acrylamide monomer which may be N-substituted, and polymerizing the resultant monomer. This polymer is usable for conductive resins, proton-conductive polymer electrolyte membranes and coating agents.

There is provided a gallotannic compound, a method of producing a gallotannic compound, a lithographic printing plate coating composition, a lithographic printing plate, a method of producing a lithographic printing plate and a method of printing.

Composite products made with binder compositions that include one or more tannins, one or more multifunctional aldehydes, and one or more Lewis acids and methods for making same. The method can include contacting a plurality of substrates with the binder composition and at least partially curing the binder composition to produce a composite product. The one or more multifunctional aldehyde compounds can include (1) two or more carbon atoms and two or more aldehyde functional groups, or (2) two or more carbon atoms, at least one aldehyde functional group, and at least one functional group other than an aldehyde functional group. A carbon atom of at least one aldehyde functional group can have a first bond with a first tannin molecule and a second bond with (a) the first tannin molecule, (b) a second tannin molecule, or (c) an oxygen atom of the at least one aldehyde functional group.

The invention discloses a water-based PTC nanocarbon electrothermal coating, and a preparation method thereof. The water-based PTC nanocarbon electrothermal coating is composed of a conductive carbonmaterial, a polymer micro powder, an auxiliary agent, an aqueous bonding resin, and water; wherein the polymer micro powder is crystallization type thermoplastic polymer powder. The preparation methodcomprises following steps: polymer micro powder is subjected to hydrophilization treatment, high speed shearing is adopted to obtain a stable uniform resin dispersion slurry in the bonding resin system, and nanocarbon conductive slurry processed through grinding dispersion is mixed with the auxiliary agents, and mixing and defoaming are carried out so as to obtain a coating finished product. According to the preparation method, crystallization-softening conversion of the crystallization type thermoplastic polymer in thermal circulation is adopted to drive the change of a nanocarbon conductivenetwork, so that the coating internal resistance is changed, positive temperature resistance (PTC) effect is achieved, regulation and control on electrothermal coating frequency is realized, and safeand high efficiency electrical heating coating is obtained. The water-based PTC nanocarbon electrothermal coating is green, is friendly to the environment, is safe and reliable, is high in efficiency, and is capable of saving energy.

The invention relates to the field of powder coatings and discloses a dust-proof and anti-fouling powder coating, a preparation method and an application thereof and a dust-proof and anti-fouling product. In terms of 1,000 parts by weight of the powder coating, the powder coating is prepared from 400-750 parts by weight of matrix resin, 200-500 parts by weight of filler, 10-80 parts by weight of a general additive, 20-100 parts by weight of a conductive polymer, 10-100 parts by weight of an anti-static auxiliary and 0-50 parts by weight of a pigment. The dust-proof and anti-fouling powder coating has excellent dust-proof, anti-static and anti-fouling performance and is easy to clean.

A cationic electrodeposition coating composition having superior defoaming property and being capable of effectively preventing the generation of unevennes of drying is provided. A cationic electrodeposition coating composition comprising a binder resin containing a cationic epoxy resin and a block isocyanate curing agent and a defoaming agent, wherein the defoaming agent contains at least one of polyoxyalkylene compounds (A) represented by any one of the following formulae (1) to (3):

]R—(OA)_n1]_t-mQ[—(OA)_n2-L]_m   (1)

[R—(OA)_n1]_t-mQ[—(OA)_n2-L-(OA)_n3-Q[—(OA)_n4-R]_t-1]m   (2)

[R—(OA)_n1]_t-1Q-L-Q [—(OA)_n2-L]_t-1   (3)

wherein Q is a reaction residual group formed by removing a hydrogen atom(s) from a number t of primary hydroxyl groups of nonreducing disaccharide or trisaccharide, L is the reaction residual group of isocyanate or the reaction residual group of dihalogenated alkyl, OA is an oxyalkylene group having a carbon number of 2 to 4, each of n1 to n4 is independently an integer of 2 to 40, t is an integer of 2 to 4 and m is an integer of 1 to 3 and smaller than t, but provided that the total number of OA's in a molecule is 10 to 80 per one of Q.

The invention relates to the technical field of pipeline construction and provides a water supply and discharge project pipeline laying method for the problem of influence on traffic. The technical scheme is as follows: the water supply and discharge project pipeline laying method comprises the following steps: S1, excavating construction wells; S2, drilling and excavating a pipeline mounting hole: drilling and excavating the pipeline mounting hole for communicating the adjacent construction wells through drilling and excavating equipment, wherein the hole diameter of the pipeline mounting hole is more than the inner diameter of a designed water discharging pipe; S3, mounting a water discharging pipe: coating the hole wall of the pipeline mounting hole with a water discharging pipe composition and forming the water discharging pipe after the water discharging pipe composition is solidified; and S4, performing water discharging pipe surface treatment: coating the inner wall of the waterdischarging pipe with a protective layer composition and forming a protective layer after the protective layer composition is solidified. The construction wells are excavated and the pipeline mounting hole is drilled and excavated, so that large-area ground excavation is not needed when the water discharging pipe is mounted and influence on urban traffic is reduced.

The invention discloses a plastic surface antibacterial grease-resistant coating which is prepared from a matrix resin, an auxiliary resin, an adhesion promoting resin, a scratch-resistant additive, amatte powder, a wear-resistant powder, a filler, a dispersing agent, a solvent and an antibacterial agent. In addition to strong sterilization and bacteriostasis effects, the coating also has the advantages that no benzene, ketone or other toxic solvents are contained, no curing agent is needed, single-component packaging is realized, convenient construction can be realized by spraying, roller coating (plastic sheet) or gravure printing (plastic film) and other modes; drying is quick; the cost is low; a prepared coating layer is high in hardness; the coating is high in adaptability, suitablefor polar base materials such as PET and non-polar base materials such as OPP, excellent in adhesive force, high in scratch resistance, good in matte effect and high in decorativeness. The invention also provides a preparation method of the plastic surface antibacterial grease-resistant coating.

The invention discloses waterproof and oil-proof non-stick coating which consists of the following components of a raw material formula in parts by mass: 40 to 50 parts of polyformaldehyde, 45 to 50 parts of polypropylene, 35 to 40 parts of polyurethane, 50 to 60 parts of urea formaldehyde resin, 40 to 45 parts of phenolic resin, 3 to 5 parts of silicon carbide, 4 to 5 parts of quartz powder, 5 to 8 parts of mica powder, 4 to 6 parts of silicon dioxide, 6 to 8 parts of bentonite, 6 to 8 parts of nano-silver powder, 5 to 6 parts of nano-copper powder, 12 to 15 parts of acrylonitrile-styrene copolymer, 10 to 15 parts of diatom ooze, 4 to 5 parts of poly-titanium dioxide, 55 to 60 parts of silicone emulsion, 30 to 40 parts of terpene resin, 25 to 30 parts of vinyl resin, 30 to 35 parts of polyvinyl chloride paste resin, 2 to 4 parts of hydroxypropyl methyl cellulose, 6 to 8 parts of molybdenum powder, 8 to 10 parts of boron carbide, 12 to 15 parts of silicone grease, 5 to 6 parts of magnesium aluminium silicate, 3 to 4 parts of methane disulfonic acid sodium salt, 10 to 12 parts of organosilicone resin, 5 to 6 parts of polysiloxane resin, 6 to 8 parts of methyl isobutyl ketone, 5 to 6 parts of glycerol and 6 to 8 parts of cyclohexanol. The waterproof and oil-proof non-stick coating has the advantages of high-temperature resistance, acid and alkali resistance, chemical reagent resistance, waterproof property, anti-sticking property and oil-proof property.