160 results about "Poly methacrylate" patented technology

The invention relates to the technical field of lubricating oil, and discloses a low-temperature-resistant lubricating oil composition and a preparation method thereof. Mineral oil, modified polymethacrylate, a dispersing agent, an antioxidant and an oil defoaming agent are stirred and mixed and then filtered, and the low-temperature-resistant lubricating oil composition is obtained. The cross-linking agent enables polymethacrylate to form a light cross-linked structure, and stress can be dispersed during shearing; nitrogen atoms in triazinyl, pyridyl, pyrrolidone and Mannich base structures serve as hydrogen bond receptors, the hydrogen bond interaction with hydroxyl on a polymethacrylate molecular chain is enhanced, a physical cross-linked network is formed, and the shear resistance is further improved; in the modified low-temperature-resistant monomer, the glass-transition temperature can be remarkably reduced by high flexibility of silicon oxygen bonds in long straight-chain alkyl and silane groups, so that a molecular chain can still move at a low temperature, and the low-temperature fluidity of the lubricating oil is improved; the cyclic structure of cyclohexyl can effectively interfere with the ordered arrangement of wax crystals, reduce the pour point of the lubricating oil and improve the low-temperature fluidity.

The invention discloses a battery separator filling conditioner and a preparation method thereof. The main components of the battery separator filling conditioner include a base oil composition, a pour point depressant, and an antioxidant. The base oil composition includes a paraffin-based neutral oil and a cycloalkyl neutral oil. The components of the battery separator filling conditioner are calculated by weight as follows: 98-100 parts of the base oil composition, 0.5-1.0 parts of polymethacrylate (PMA), and 1-2 parts of the antioxidant. The components of the base oil composition are calculated by weight as follows: 80-90 parts of the paraffin-based neutral oil and 10-20 parts of the cycloalkyl neutral oil, and the total number of the paraffin-based neutral oil and the cycloalkyl neutral oil is 98-100 parts. The filling conditioner prepared by the invention has a light appearance color, moderate viscosity, a low pour point, a high flash point, low volatilization loss, and an extremely low sulfur content. It also has good antioxidant performance and suitable solubility, and has good material compatibility.

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 purpose of the invention is both to suppress viscous resistance loss at compressor start (normal temperature) and improve oil film load performance during operation (high temperature) in a refrigerating machine oil and a refrigerating device. A refrigerating machine oil according to the present disclosure is for a refrigerating device in which propane is sealed therein as a refrigerant, said refrigerating machine oil containing an ester-based oil having a viscosity grade of ISO VG32 or less, and a viscosity index improver containing a polymethacrylic acid ester having a C1-18 alkyl substituent, the concentration of the polymethacrylic acid ester being from 0.6 to 6 wt%.

The invention relates to the technical field of industrial gear lubricating oil, in particular to an industrial gear oil composition. The composition comprises the following components in percentage by weight: 10%-30% of rerefined base oil, 5%-40% of synthetic ester or bio-ester base oil, 20%-70% of second-class mineral base oil, 1.0%-5.0% of an anti-wear composite additive and 5.0%-10.0% of a viscosity index improver, wherein the synthetic ester or bio-ester base oil is selected from one or more of diisononanoic acid ester, trimethylolpropane ester, pentaerythritol ester or rapeseed oil ester; the anti-wear composite additive comprises 5.0%-9.9% of trialkyl phosphate, 1.0%-4.9% of alkyl borate or alkyl boric acid polyether, 1.0%-4.9% of alkenyl amine and the balance of mineral oil; the viscosity index improver is a star type or comb type polymethacrylate polymer.

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).

A preparation method of the methacrylated gelatin with the dual functions comprises the following steps: firstly, preparing collagen methylated polymethacrylate, then mixing 5% of collagen methylated polymethacrylate, 0.2% of trimethylbenzoyl phosphonate, 10 mg / ml of a herba houttuyniae extract and 20 micrograms / ml of nifedimab, and carrying out uniform mixing, so as to obtain the methacrylated gelatin with the dual functions, the collagen methylated polymethacrylate and the trimethylbenzoyl phosphonate, the herba houttuyniae extract, the nifedimab and the collagen methylated polymethacrylate, the herba houttuyniae extract and the nifedimab. The methacrylated gelatin is prepared under ultraviolet irradiation, and the loose cross-linked network structure of the methacrylated gelatin can realize continuous release of drugs, so that the demand of continuous and stable drug delivery is met; in addition, the gelatin methacrylamide, the herba houttuyniae extract and the nintedanib are combined to relieve hemorrhagic intestinal adhesion and can regulate inflammation and anti-fibrosis functions.

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 present invention relates to a curable coating composition, in particular a radiation curable coating composition, comprising at least one poly(meth)acrylate compound comprising at least 6 (meth)acrylate groups, at least one unsaturated silane compound, and at least one photoinitiator. The at least one poly(meth)acrylate compound comprising at least 6 (meth)acrylate groups and the at least one unsaturated silane compound account for at least 95% by weight of the polymerizable compounds present in the composition. Upon radiation curing, the composition provides an abrasion and / or scratch resistant coating.

The present invention relates to a heat sealable coating system suitable for sealing various types of substrates, comprising a film-forming dispersion comprising: a polyester or polyester mixture as type A polymer, a poly (meth) acrylate as type B polymer, a graft copolymer of type A polymer and type B polymer as type AB polymer, the present invention relates to a dispersion comprising a polyolefin or polyolefin mixture as a C-type polymer, and a graft copolymer as a CD-type polymer consisting of a C-type polymer and a poly (meth) acrylate as a D-type polymer, in which the dispersion comprises, based on the total weight of the dispersion, 30% to 60% by weight of ethyl acetate, 10% to 30% by weight of an acrylic acid ester, 10% to 30% by weight of an acrylic acid ester, and 10% to 30% by weight of an acrylic acid ester, based on the total weight of the dispersion. And wherein the dispersion comprises from 20% to 50% by weight of a type A polymer, from 10% to 20% by weight of a type B polymer, from 10% to 20% by weight of a type AB polymer, from 5% to 25% by weight of a type C polymer, and from 15% to 35% by weight of a type CD polymer, in each case, based on the total mass of the type A, type B, type C, type AB, and type CD polymers, the invention also relates to a method for sealing various types of substrates, in which a foil is coated with the coating system according to the invention.

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.

The invention provides an antifouling coating agent, a cured product, and a laminate. The antifouling coating agent comprises a silicone carbamate poly (meth) acrylate, wherein the silicone carbamate poly (meth) acrylate comprises a polysiloxane unit containing a hydroxyl group, a (poly) (meth) acrylate unit containing a hydroxyl group, a polyalkylene glycol unit containing a hydroxyl group at a single terminal, and a polyisocyanate unit.

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 relates to the technical field of intelligent materials, in particular to high-viscosity low-temperature-resistant magnetorheological fluid and a preparation method thereof, and the high-viscosity low-temperature-resistant magnetorheological fluid is prepared from the following components in parts by weight: 70-85 parts of magnetic particles; 5-20 parts of modified magnetic particles; 8-20 parts of high-viscosity base carrier liquid, which comprises 30-50% of high-viscosity silicone oil, 30-40% of high-functionality synthetic ester, and 20-30% of poly-alpha-olefin; 0.5 to 2.0 parts of a dispersant; 1.0 to 3.0 parts of an anticoagulant; the magnetic particles are subjected to aerogel-nano calcium carbonate composite coating and fluorine-containing silane-siloxane co-grafting, and modified magnetic particles are prepared; and the dispersing agent is selected from hyperbranched polyether amide or a polymethacrylate-polysiloxane block copolymer. The preparation method comprises the following steps: preparing modified magnetic particles; carrying out ultrasonic mixing on the base carrier liquid and an anticoagulant at 50-70 DEG C; adding magnetic particles, modified magnetic particles and a dispersing agent, dispersing by adopting a homogenizer, and then carrying out gradient cooling treatment. The product is high in low-temperature fluidity and magnetic response strength and good in dispersion stability.

A process for producing a packaged viscoelastic polymer mass, comprising the steps of: a) providing and plasticising a viscoelastic polymer mass at elevated temperatures, wherein the polymer mass is a polymer mass based on poly(meth)acrylates having a weight-average molecular weight of 500,000 g / mol or more; b) continuously filling the plasticized viscoelastic polymer mass into a protective polymer film which has no self-adhesive properties and which was brought into a tubular shape before being filled with the viscoelastic polymer mass, to obtain a strand-like polymer composite with a diameter of 55 to 70 mm comprising a core made of the plasticized viscoelastic polymer mass and a shell made of the protective polymer film, wherein the proportion of the protective polymer film based on the total weight of protective polymer film and viscoelastic polymer mass is less than 1.0 wt.%, and wherein the plasticized viscoelastic polymer mass has a viscosity of more than 100 Pas at the time of filling into the tubular protective polymer film; c) converting the strand-shaped polymer composite into a flattened strand-shaped polymer composite whose smallest cross-section has a width to height ratio of approximately 2:1 to 7:1; d) cooling the flattened strand-shaped polymer composite to a temperature at which the polymer composite is still plastically deformable; e) and subsequently converting the flattened strand-shaped polymer composite by squeezing into an elongated polymer composite comprising a plurality of pinch points which divide the polymer composite into a plurality of first and a plurality of second regions, wherein the first regions each have a length of at least approximately 300 mm and the cross section of the first regions substantially corresponds to the cross section of the strand-shaped polymer composite, wherein the second regions are formed by the pinch points, the thickness of which results from the thickness of the protective polymer film and viscoelastic polymer mass which remains in the region of the pinch points.

The invention relates to the field of lubricating oil and discloses a lubricating oil composition and a preparation method thereof.The lubricating oil composition comprises V type base oil, CTL type base oil, HVI type base oil, an antioxidant, an anti-rust agent, an extreme pressure anti-wear agent and a demulsifier; wherein the extreme pressure anti-wear agent is selected from modified polymethacrylate and / or polymethyl methacrylate. The lubricating oil composition does not contain sulfur and phosphorus elements, meets the zero-level oil-free certification standard of the chemical industry, ensures that tail gas discharged by equipment is safe and pollution-free, has good extreme pressure wear resistance, excellent water diversion performance and oxidation resistance, prolongs the service life of oil products, and has wide application prospects.