197 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 drag reduction composition, a preparation method thereof and a pipeline drag reducer. The drag reduction composition comprises the following components in parts by mass: 10-21 parts of a polymethacrylate compound, 6-18 parts of a dispersing agent and 2-9 parts of a lubricating agent, the lubricant is prepared from one or more of glycerol triacetate, glycerol tripropionate, pentaerythritol tetraacetate and dipentaerythritol hexaacetate. The drag reduction composition provided by the invention comprises the polymethacrylate compound matched with the dispersing agent and the specific lubricant, and the components jointly form a suspension system with stable properties, so that the degree of freedom of motion among polymer molecules can be increased, and the occurrence of an agglomeration phenomenon is reduced. When the drag reduction composition is added into a pipeline containing crude oil or product oil, polymer molecules can be stretched, folding and curling phenomena of the polymer molecules can be reduced, and a good drag reduction effect can be quickly achieved.

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.

To provide an apparatus for regenerating a poly(meth)acrylic acid ester, with which water can be efficiently removed when a poly(meth)acrylic acid ester is regenerated; a method for regenerating a poly(meth)acrylic acid ester; and a method for producing a (meth)acrylic acid ester.SOLUTION: An apparatus 100 for regenerating a poly(meth)acrylic acid ester includes: a pyrolysis unit 10 that performs pyrolysis of a poly(meth)acrylic acid ester to obtain a gaseous pyrolysis product; a first cooling unit 20 that cools the gaseous pyrolysis product to obtain a liquid pyrolysis product; a refining unit 30 that performs refining of the liquid pyrolysis product to obtain a gaseous refined product; a second cooling unit 40 that cools the gaseous refined product to obtain a liquid refined product; and a dehydration unit 50 that removes water contained in at least one of the liquid pyrolysis product and the liquid refined product.SELECTED DRAWING: Figure 1

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 proposes a thickened hydraulic oil composition comprising the following components, by weight: 5-8% viscosity index improver, 0.5-3% extreme pressure antiwear agent, 0.1-3% antioxidant, 0.05-0.3% rust inhibitor, 0.01-0.1% passivator, 0.001-0.03% antifoaming agent, with the balance being base oil. This thickened hydraulic oil composition, obtained by combining a polymethacrylate viscosity index improver with an extreme pressure antiwear agent, exhibits excellent viscosity-temperature performance and low-temperature starting performance, as well as superior extreme pressure and antiwear properties, ensuring smooth equipment operation.

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.

The invention relates to a (non) biomass-sourced (methyl) acrylate (co) polymerization reaction method under the synergistic regulation of a hydrogen bond-free S negative nucleophilic center-containing thiourea anion initiator and organic aluminum lewis acid, and belongs to the technical field of polymer synthesis. Biomass-sourced and non-biomass-sourced (methyl) acrylate monomers are used as raw materials, and conjugated addition polymerization is carried out under the action of a bimolecular concerted catalysis system in which organic aluminum lewis acid participates in monomer activation, the molar ratio of the biomass-sourced or non-biomass-sourced (methyl) acrylate compound to the organic aluminum lewis acid to the thiourea anion is (1-800): (0.20-0.50): (0.10-0.25), the reaction is performed for 0.05-1440 minutes under the condition that the polymerization temperature is-60-90 DEG C, and the poly (methyl) acrylate homopolymer or copolymer is obtained. Syndiotactic copolymerization among monomers and block copolymerization among monomers with different polarities can be realized. The polymerization process provided by the invention can realize the polymerization of biomass-sourced and non-biomass-sourced (methyl) acrylics, the raw materials are cheap, the operation is convenient, and the reaction time is short, so that the low-cost and large-scale industrial production is realized; moreover, polymers with different properties can be prepared by virtue of rich monomer adaptability, and a research basis is provided for subsequent recovery and cyclic utilization of the polymers.

The present invention belongs to the technical field of coatings, and particularly relates to a one-coat material for engine bottom and its preparation method. The coating material uses polyaspartate resin, introduces a rigid polysulfone chain segment to restrict the excessive movement of the flexible chain segment of the resin and improve the crosslinking density of the polymer, thereby enhancing the intermolecular force, improving the efficiency of molecular chain transfer and dissipation of energy, and further improving the impact resistance of the material; introduces a hydrophobic polymethacrylate chain segment to endow the coating with good water resistance; fills with nano titanium diboride to improve the wear resistance and corrosion resistance of the coating. The coating prepared by the present invention is a low-VOC one-coat material, which not only has good adhesion of the primer and can firmly adhere to the surface of the substrate, but also has the properties such as water resistance and corrosion resistance of the topcoat; at the same time, it reduces the emission of VOCs, helps to reduce air pollution, and meets the requirements of environmental protection policies.

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.

To provide a consumer product composition including high capacity delivery particles containing one or more benefit agents whose core includes an aldehyde and / or ketone part.SOLUTION: A consumer product composition includes a consumer product auxiliary material and a group of delivery particles. The delivery particles include a core and a polymer wall surrounding the core, preferably a poly(meth)acrylate polymer wall. A weight ratio of a core material and a wall polymer of the delivery particles is relatively high (for example, at least 95:5).SELECTED DRAWING: None

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.