89 results about "Poly methacrylate" patented technology

Adhesive articles capable of forming encapsulation layers include a base layer that is optically clear and thermally stable for 1000 hours at a temperature of 130°C and a layer of a curable adhesive disposed on the base layer. The curable adhesive layer includes a poly(meth)acrylate-based matrix containing acid functional groups and epoxy functional groups such that upon heating to a temperature of 100°C to 150°C for 1 hour to 2 hours, the curable adhesive layer crosslinks to form an optically clear encapsulation layer. Methods of using these adhesive articles include disposing the adhesive article on a major surface of an optical article and curing the adhesive layer to form an encapsulated optical article.

The invention relates to the field of lubrication of ball screws, in particular to long-life creep-resistant lubricating grease for a high-precision ball screw, which comprises the following components in parts by weight: 65 parts of polyolefin, 5-10 parts of pentaerythritol ester, 5-10 parts of isocyanate, 2-5 parts of amine chain extender, 5 parts of PTFE (polytetrafluoroethylene), 1.0-1.5 parts of diphenylamine, 0.1-0.5 part of 2, 4-diphenyl-1, 3-pentanediol monoisobutyrate, 0.1-0.5 part of antioxidant, 0.1-0.5 part of antioxidant and 0.1-0.5 part of lubricant. The composite material is prepared from the following components in parts by weight: 0.5 to 1 part of 2, 6-butylated hydroxytoluene, 1.5 to 2 parts of molybdenum isocaprylate, 0.5 to 1 part of molybdenum bis (2-ethylhexyl) dithiocarbamate, 1 to 2 parts of zinc dialkyl dithiophosphate, 3 parts of calcium petroleum sulfonate, 1 to 1.5 parts of polyisobutene, 0.2 to 0.5 part of benzotriazole and 0.1 to 0.3 part of polymethacrylate. The isocyanate comprises HDI and IPDI, and the amine chain extender comprises TETA and TEPA. According to the invention, isocyanate and the amine chain extender react to form a polyurea macromolecular chain, and a high-energy hydrogen bond network is formed, so that the lubricating grease has relatively high creep resistance; the anti-creep performance is further enhanced through cooperation with the PTFE particles; meanwhile, through cooperation with diphenylamine, the oxidation resistance is promoted, the consumption is reduced, and the service life of the lubricating grease is longer.

The application belongs to the technical field of shock absorber oil, and particularly relates to a silicon-based shock absorber oil for racing cars and a preparation method thereof. The silicon-based shock absorber oil for racing cars comprises, by mass percentage, 50-60 parts of silicone oil, 40-50 parts of base oil, 3-6 parts of a viscosity index improver, 0.2-0.5 parts of an extreme pressure anti-wear agent, 0.2-0.5 parts of a pour point depressant, and 0.2-0.5 parts of an antioxidant. The extreme pressure anti-wear agent comprises thiazolyl disulfide dimers and poly-methyl acrylate modified nanoscale spherical boron nitride. The silicon-based shock absorber oil for racing cars has excellent viscosity-temperature performance, shear stability, heat resistance, wear resistance, corrosion resistance and high-temperature foam resistance.

The application provides a plate transfer film and a preparation method and application thereof, and relates to the technical field of plate transfer film preparation. The plate transfer film comprises, from top to bottom, an upper surface layer, a core layer and a lower surface layer; the upper surface layer comprises the following components in a mass ratio: 89-91 parts of polypropylene, 1.1-6.3 parts of an antistatic agent and 0.2-0.5 parts of a slip agent; the core layer comprises the following components in a mass ratio: 40-70 parts of high-density polyethylene, 2-15 parts of a matting agent, 1-3 parts of a dispersing agent and 0.1-1.0 parts of an antioxidant; and the lower surface layer comprises the following components in a mass ratio: 95-97 parts of polypropylene and 3.0-5.0 parts of polymethyl acrylate. The plate transfer film is attached to a PETG plate at 175-185 DEG C to prepare a PETG plate, and the gloss value of the PETG plate is 35-42 %.

The invention belongs to the technical field of photoresist, and particularly relates to a triazinyl negative photoresist composition for an organic insulating film, which comprises the following components in parts by mass: 30-100 parts of a polymer containing a triazine structure; 5-65 parts of an unsaturated compound containing an olefinic bond; 0.005 to 10 parts of a surface active agent; 0.005 to 10 parts of an adhesion promoter; 0.005 to 30 parts of a free radical polymerization initiator; and 100 to 2000 parts of a solvent. According to the invention, a polyfunctional group triazine derivative participates in a free radical addition reaction, a poly (methyl) acrylate polymer containing a triazine structure is synthesized, and by regulating and controlling the type and number of functional groups of monomers participating in the reaction and the alkyl chain length and introducing aryl or naphthenic base, the polyfunctional group-containing poly (methyl) acrylate polymer is obtained. The hydrophilic-hydrophobic property, the temperature resistance and the chemical resistance of the polymer can be accurately adjusted.

Provided is a light-curable composition that includes one or more monofunctional (meth)acrylate monomers with at least one monomer having a homopolymer glass transition temperature of from 0°C to 200°C; a crosslinker selected from multifunctional oligomeric (meth)acrylates, aliphatic urethane (meth)acrylates, aromatic urethane (meth)acrylates, polyester (meth)acrylates, and epoxy (meth)acrylates; one or more adhesion promoters selected from glycidyl (meth)acrylate, 2-hydroxyethyl(meth)acrylate acid phosphate, phosphonate ester-containing (meth)acrylic monomer, phosphate ester-containing (meth)acrylic monomer, silane, and (meth)acrylic acid; a photoinitiator; a flame retardant; and one or more fillers comprising hollow fillers, refractory fillers comprising kaolin, intumescent fillers, or mixtures thereof. The cured composition can function as an electrical insulator in battery assemblies, while protecting components from hot particles and gases in case of thermal runaway events.

The present invention relates to poly(meth)acrylates which are produced by a substance polymerization using a first polymerization regulator and a second polymerization regulator. The invention further relates to an adhesive compound and the method for producing the poly(meth)acrylate adhesive compound.

Provided is a release coating agent for a polyester base material, which has excellent adhesion to the polyester base material and has heat peeling resistance. A release coating agent for a polyester substrate according to an embodiment includes an aqueous dispersion in which a polyurethane resin is dispersed in an aqueous dispersion medium. The aqueous dispersion contains a (meth) acrylic polymer that contains, as constituent components, a monofunctional alkyl (meth) acrylate having an alkyl group having 4-22 carbon atoms and a poly (meth) acrylate having 2-6 functional groups.

A system for preparing block copolymers comprising a polyolefin block and a polar polymer block by a continuous droplet flow method is disclosed. The continuous droplet flow method combines coordination-insertion polymerization of a gaseous olefin monomer that is dissolved in droplets of a solvent using a diamine coordinated Pd(II) catalyst complex with Metal-organic Insertion Light-initiated Radical polymerization of a polar monomer, such as an acrylate or (meth)acrylate, using the same catalyst and an auxiliary complexing ligand. Polyolefin-polar block copolymers prepared using the disclosed method can be a diblock copolymer comprising a polyolefin block and a polar polymer block, (e.g. a polyethylene-polyacrylate or a polyethylene-poly(meth) acrylate diblock copolymer), or a triblock copolymer (e.g. a polyacrylate-polyethylene-polyacrylate or a poly(meth)acrylate-polyethylene-poly(meth)acrylate copolymer).

Provided is a grease composition having excellent low-temperature startability. One embodiment of the present invention is a grease composition comprising: a thickener; a base oil; and a polymethacrylate. The polymethacrylate is a comb polymer having a side chain and an average side chain carbon number of 14 to 22. The thickening agent preferably comprises a urea-based thickening agent or a soap-based thickening agent. The polymethacrylate preferably has a number average molecular weight (Mn) of from 30,000 to 90,000.

The invention belongs to the technical field of medical materials, and particularly relates to an adsorption material for removing low-density lipoprotein as well as a preparation method and application of the adsorption material. The adsorption material comprises a carrier and a ligand immobilized on the carrier, wherein the carrier is obtained by grafting and modifying polymer microspheres through glycidyl methacrylate, and the polymer microspheres comprise at least one of polystyrene divinyl benzene resin microspheres and polymethacrylate resin microspheres; the ligand contains a group with negative electricity.

The invention relates to solvent-borne one-pack clearcoat material, characterized in that it comprises i.) one or more hydroxy functional polymers (A), at least one of which is a poly(meth)acrylate (A1), possessing a) a glass transition temperature below -15 °C as determined by differential scanning calorimetry; b) a hydroxyl value in the range from 130 mg KOH / g to 300 mg KOH / g; and c) a weight-average molecular weight determined by gel permeation chromatography using a polystyrene standard; ii.) one or more crosslinking agents (B), at least one of which is a melamine-formaldehyde resin possessing methoxymethyl groups (B1); and iii.) a catalyst system (C) comprising one or more amine-blocked sulfonic acids (C1); and one or more phosphoric acid catalysts (C2). The invention further related to a multilayer coating system comprising a clearcoat layer formed from said clearcoat material, a method of preparing such multilayer coating system and a thus coated substrate, as well as the use of the solvent-borne one-pack clearcoat material for coating uncoated or precoated substrates, preferably vehicle bodies or parts thereof in OEM or repair coating.

This invention provides a liquid composition for topical and transdermal drug delivery, comprising a polymethacrylate at >5% weight, a humectant, a plasticizer, and a solvent. Optionally, it includes a permeation enhancer and / or a drug. Upon application and rapid drying, the composition forms a durable, non-sticky, non-transferable film that enables controlled drug release through the skin or retention at the skin surface.

The present technology includes the use of pour point depressants to improve the low temperature viscosity of industrial gear lubricating compositions containing Group IV base oils. The present technology provides an industrial gear lubricating composition comprising a Group IV base oil, a sulfurized olefin, a phosphorus-containing agent, and a poly (meth) acrylate polymer pour point depressant.

This invention relates to the field of lubricating oil technology, and more particularly to an engine oil composition with improved water resistance and its preparation method. The engine oil composition includes a complexing agent, a base oil, a viscosity index improver, and a pour point depressant. The complexing agent is a mixture of detergent, dispersant, zinc dialkyl dithiophosphate, antioxidant, friction improver, emulsifier retainer, and corrosion inhibitor. The emulsifier retainer is a polymethacrylate with an N-vinylpyrrolidone branched structure and / or a styrene-maleic anhydride polymer. The engine oil composition of this invention, by employing a specific complexing agent and mixing it with other functional additives, exhibits excellent formulation balance and compatibility, and can well meet the requirements of automobile manufacturers for the water resistance, fuel economy, and emission performance of hybrid engine oils.

To provide a toner for electrostatic image development that offers excellent resistance to hot offset and durability. [Solution] A toner for developing electrostatic images, comprising toner particles containing a binder resin and a release agent, The amorphous composite resin A comprises a polyester resin segment which is a polycondensate of an alcohol component and a carboxylic acid component, and a polymethacrylate ester resin segment which is an addition polymer of raw material monomers containing a methacrylate ester. A toner for developing electrostatic images, wherein the release agent contains ester wax.

An adhesive with good chemical resistance and high internal strength under static load in the z-direction should be provided. This can be achieved with an adhesive that... - one or more poly(meth)acrylates; and - one or more acrylonitrile butadiene rubbers contains and is characterized in that the adhesive compound contains one or more vinyl aromatic block copolymers. The application also relates to an adhesive tape comprising a layer of an adhesive compound according to the invention and to the use of the adhesive compound for bonding components of electronic devices or components in automobiles.

The invention provides an ultrahigh-base-number composite calcium salt detergent, a preparation method thereof and a lubricating oil complexing agent. The preparation method comprises the following steps: mixing solvent oil, base oil, an accelerant A, an accelerant B, sulfonic acid, salicylic acid, first inorganic calcium and an accelerant C for neutralization reaction; carbon dioxide is introduced, second inorganic calcium and water are added for a carbonation reaction, a product is purified after the reaction is finished, and the composite calcium salt detergent is obtained; the accelerant B is selected from a combination of two or more than three of polyisobutylene succinic anhydride, dodecenyl succinic anhydride, polymethacrylate, trimethylolpropane isooctoate, alkylphenol formaldehyde resin and benzylamine. The composite calcium salt detergent disclosed by the invention has the advantages of ultrahigh base number and better thermal stability, and can fundamentally improve the problem of precipitation when calcium sulfonate and calcium salicylate are compounded.

The invention discloses a method for modifying a microsphere by using a styrene-maleic anhydride copolymer or a derivative of the styrene-maleic anhydride copolymer, the microsphere and application of the microsphere. The styrene-maleic anhydride copolymer or the derivative of the styrene-maleic anhydride copolymer is used as an enhancement and functionalization precursor; the preparation method comprises the following steps: coating internal pores and surfaces of matrix microspheres such as polymethacrylate, polystyrene-divinyl benzene or agarose with the covalently-bonded network-shaped support structure formed on the surface of a microsphere skeleton through an in-situ cross-linking reaction. According to the method, the mechanical strength of the microspheres is remarkably improved, high-density functionalization of the surfaces of the microspheres is synchronously achieved, the enhancement effect is uniform, pore channels are not blocked, and the obtained microspheres have excellent compression resistance, improved chemical stability and rich subsequent coupling reaction sites and are widely applied to preparation of high-performance chromatography packing, adsorbents or drug carriers.

The object of the present invention is to provide a viscosity index improver that, in a lubricating oil composition using ester oil, exhibits excellent viscosity-enhancing effect at 100°C, can lower the kinematic viscosity at 40°C, and has a high viscosity index-enhancing effect while considering the environment, such as biodegradability and environmental toxicity. [Solution] A viscosity index improver containing a poly(meth)acrylate polymer (A), an ester oil (B), and an ester oil (C), wherein the solubility parameter (SP value) of the poly(meth)acrylate polymer (A) is 8.95 to 9.15 (cal / cm³). 3 ) 1 / 2 The ester oil (B) is a diesterified product, and the solubility parameter (SP value) of the ester oil (B) is 8.80-8.95 (cal / cm³). 3 ) 1 / 2 The ester oil (C) is a glycerol triester, and the solubility parameter of the ester oil (C) is 8.90-9.00 (cal / cm³). 3 ) 1 / 2 A viscosity index improver.

This invention relates to the field of lubricant technology, specifically to a lubricant for agricultural machinery and its preparation method. This agricultural machinery lubricant, by weight, comprises the following components: 85-93 parts of a first base oil, 2.0-3.0 parts of 1,3-bis(3-phenoxyphenoxy)benzene, 0.2-0.3 parts of zinc dialkyl dithiophosphate, 0.5-1.0 parts of a graphene-based anti-wear additive, 2.0-4.0 parts of polyisobutylene succinimide, 0.5-1.5 parts of a hindered phenolic antioxidant, 1.5-3.0 parts of hydrogenated styrene-isoprene copolymer, and 0.2-0.6 parts of polymethacrylate; wherein the first base oil comprises poly(α-olefin) PAO4 and paraffin oil in a weight ratio of 2-3:1. The agricultural machinery lubricant provided by this invention improves the anti-wear and friction-reducing properties of the graphene-based anti-wear additive, and enhances the stable dispersibility of functionalized graphene in the oil phase and its interfacial properties with the oil phase.

A polyorganosiloxane resin – poly(meth)acrylate copolymer and methods for its preparation and use are provided. The copolymer has resinous polyorganosiloxane pendant groups and an organic polymer backbone. The copolymer may be prepared via condensation reaction. The copolymer is useful as an additive for coatings.

The present application relates to a kind of high stability's bexontan solution, with 0.1-10% bexontan, 20-50% high molecular material and buffer solution in bexontan solution with mass volume percentage, wherein, the high molecular material is selected from any one or combination of polymethyl methacrylate, cyclodextrin, hydroxypropyl methyl cellulose, sodium carboxymethyl cellulose, the buffer solution is selected from any one of citric acid buffer solution, phosphate buffer solution, malic acid buffer solution, succinic acid buffer solution, tartaric acid buffer solution, lactic acid buffer solution, acetic acid buffer solution, bexontan solution pH4-7.5.The bexontan solution of the present application significantly delays the diffusion of drug bitter taste in oral cavity and realizes taste masking, and has excellent stability, more optimal cost, quality controllable, good taste and the like advantages.

The invention discloses a full-degradable intragastric balloon and a preparation method thereof, and relates to the technical field of medical instruments. The intragastric balloon is of a double-layer composite structure, the outer layer of the balloon is an alkali response gel film, and the inner layer of the balloon is an acid response polymer film; the alkali response gel film is a PVA-boric acid gel film, and the acid response polymer film is polymethacrylate resin. The dual pH response mechanism ensures that the damaged balloon is not detained in the intestinal tract for a long time, and the risk of causing intestinal obstruction is reduced. Therefore, the safety of the intragastric balloon is improved, and the active safety design concept that the function can be maintained and the failure can be degraded is achieved.

A mixture contains at least one amino-regulated polyether block amide (PEBA) and at least one poly(meth)acrylate selected from poly(meth)acrylimides, polyalkyl(meth)acrylates, and mixtures thereof. The mass ratio of PEBA to poly(meth)acrylate is 95:5 to 60:40. The polyalkyl(meth)acrylate contains 80% by weight to 99% by weight of methyl methacrylate (MMA) units and 1% by weight to 20% by weight of C1-C10-alkyl acrylate units, based on the total weight of polyalkyl(meth)acrylate. The mixture can be processed to give foamed mouldings. The mouldings can be used in footwear soles, stud material, insulation or insulating material, damping components, lightweight components, or in a sandwich structure.

The application discloses a kind of metal hydride-organic liquid composite hydrogen storage materials and preparation method thereof.The method comprises: (1) metal hydride is ball milled with superfine silicon dioxide under the protection of inert atmosphere, and the superfine metal hydride-silicon dioxide mixed particles are obtained;(2) polymethyl acrylate is added to organic solvent A with mixed particles, then organic solvent B is added, after being fully ultrasonic oscillation, organic solvent A is removed by rotary evaporation, and the superfine metal hydride-silicon dioxide@PMA composite particles are obtained;(3) the composite particles obtained in step (2) are added to organic hydrogen storage liquid, hydrogen is introduced and secondary ball milling is carried out, and the metal hydride-organic liquid composite hydrogen storage material doped with polymer is obtained.The application can improve the problem of phase separation of metal hydride and organic hydrogen storage liquid, and improve the stability of composite hydrogen storage material.

The invention relates to the technical field of diesel oil preparation, in particular to a preparation method of environment-friendly diesel oil with an ultralow condensation point. Comprising the following steps: step 1: raw material pretreatment: S1.1, raw material component screening and proportion determination (in percentage by mass): a basic component: hydrofined diesel oil fraction (straight-run diesel oil is subjected to hydrodesulfurization / dearomatization, the distillation range is 180-360 DEG C, the sulfur content is less than or equal to 5 ppm, the aromatic hydrocarbon content is less than or equal to 10%, and the cetane number is more than or equal to 50), and the proportion is 60-70 wt%; the bio-based pour point depressing component comprises 10-15 wt% of rapeseed oil methyl ester biodiesel (the acid value is less than or equal to 0.5 mgKOH / g, the moisture is less than or equal to 0.05 wt%, and the iodine value is 100-120 gI / 100 g); the modified synthetic ester pour point depressant is a pentaerythritol fatty acid ester-polymethacrylate grafted copolymer (the number-average molecular weight is 8000-12000, and the ester content is 40-50 wt%); the condensation point of the finished diesel oil is less than or equal to-45 DEG C, the cold filter plugging point is less than or equal to-38 DEG C, the low-temperature fluidity is excellent, the finished diesel oil is suitable for all-weather use in-45 DEG C alpine regions, the sulfur content is less than or equal to 5ppm, the aromatic hydrocarbon content is less than or equal to 15%, the cetane number is greater than or equal to 52, the national VII diesel oil standard is completely met, and the particulate matter emission after combustion is reduced by 18%

The invention belongs to the technical field of hydraulic oil, and particularly relates to a polymethacrylate type hydraulic oil viscosity index improver and a preparation method thereof. By adopting ultraviolet light with a specific wavelength (200-400 nm, preferably 254 nm or 365 nm) to assist initiation, side reactions such as thermal degradation, oxidation and the like caused by high temperature in the traditional thermal polymerization process are remarkably inhibited. And the relative stability of the monomer concentration is maintained by combining ultraviolet initiation with a dropwise adding process, so that the chain propagation reaction is more stable and uniform. Under a regular polymerization structure initiated by ultraviolet light, through copolymerization of alkyl ester monomers of methacrylic acid C1-C4, C5-C12 and C13-C24 and olefin monomers in a specific molar ratio, a remarkable synergistic effect is generated. According to the structure, the pour point (the lowest temperature reaches-52 DEG C) and the low-temperature viscosity (KV-18) of hydraulic oil are remarkably reduced through effective containing of the long-chain alkyl ester, and the mechanical shear resistance of the polymer is enhanced through the regular chain structure of the long-chain alkyl ester.

A multi-layered film includes (A) an oxygen barrier layer; (B) a moisture barrier layer disposed on and in direct contact with (A) the oxygen barrier layer; and (C) an adhesive layer disposed on and in direct contact with (B) the moisture barrier layer. (A) The oxygen barrier layer includes (a) modified polyethylene resin and (e) ethylene-vinyl alcohol copolymer. (B) The moisture barrier layer includes (b1) first poly(ethylene-co-1-octene) having a melting index of 20 g / 10 min to 40 g / 10 min at 190° C. and (b2) second poly(ethylene-co-1-octene) having a melting index of 1 g / 10 min to 10 g / 10 min at 190° C. (C) The adhesive layer includes poly(ethylene-co-methacrylate-co-glycidyl methacrylate) having a melting index of 1 g / 10 min to 10 g / 10 min at 190° C.