39 results about "Acrylic rubber" patented technology

A substrate-conveying support tape includes: a support film; a primer layer provided on the support film; and a temporary fixing material layer provided on the primer layer, in which the support film is a polyimide film, the temporary fixing material layer contains a thermoplastic resin, and the primer layer contains at least one selected from the group consisting of a silane coupling agent having an epoxy group or a ureido group, an epoxy resin, a polyurethane rubber, and an acrylic rubber having an acid value of 5 mgKOH / g or more.

The present invention relates to a polycarbonate composition comprising the following components, relative to the total weight of the composition A) 63-81 wt. % of an aromatic polycarbonate,B) 13-20 wt. % of a phosphorus flame retardant,C) 4-12 wt. % of impact modifiers containing 1-7 wt. % of a first impact modifier and 1-7 wt. % a second impact modifier, wherein the first impact modifier is acrylonitrile-butadiene-styrene, and the second impact modifier is selected from methyl methacrylate-butadiene-styrene and silicone-acrylic rubber based impact modifiers,D) 1-6 wt. % of a mineral filler, andE) 0.05-0.09 wt. % of polytetrafluoroethylene.The present invention also relates to a shaped article made from the composition. The polycarbonate composition according to the present invention has a good combination of flame retardancy and impact strength.

An acrylic rubber containing a (meth)acrylate, a vinyl carboxylate, and ethylene, as monomer units, wherein a content of the vinyl carboxylate is 15% by mass or more and a content of the ethylene is 5% by mass or more, based on a total amount of the monomer units in the acrylic rubber.

Provided are a thermoplastic resin composition and a molded product manufactured therefrom, the thermoplastic resin composition including (A) 10 to 40 wt % of an acrylic graft copolymer that includes a core including an acrylic rubbery polymer, and a shell formed by graft polymerization of a monomer to the core, the monomer including an alkyl (meth)acrylate, an aromatic vinyl compound, a vinyl cyanide compound, or a combination thereof; (B) 30 to 60 wt % of a polyalkyl (meth)acrylate resin; and (C) 10 to 40 wt % of an N-(substituted)maleimide-acrylic copolymer.

A modifier for polyamide resins that can improve the impact strength and fluidity of a polyamide resin composition while keeping its high visual quality intact is provided. The modifier for polyamide resins contains polymer particles and an acid. Each of the polymer particles has a core-shell structure composed of a shell layer and one or more core layers. At least one of the core layers is formed of polybutadiene, poly(butadiene-styrene), or acrylic rubber. The shell layer is formed of a polymer comprising structural units derived from monomer components containing 50 wt % or more of a methacrylic ester monomer and 0 to 50 wt % of another monomer copolymerizable with the methacrylic ester monomer.

To provide an acrylic rubber composition capable of eliminating problems of mold contamination and mold corrosion, while easy for mold removal or high-speed molding, and excellent in sealability, durability, etc., and also to provide a rubber molding using the same.SOLUTION: An acrylic rubber composition includes a component (A) as a principal component and components (B) to (D): (A) an acrylic rubber not including a halogen-based component; (B) a carbon black having a BET specific surface area of 15 to 100 m2 / g; (C) a plasticizer with a molecular weight of 400 to 3500; and (D) a cross-linking agent selected from a polyvalent primary amine compound and an organic peroxide.SELECTED DRAWING: None

The present application relates to a kind of high-gloss scratch-resistant heat-resistant grade PMMA composite material and its preparation method, by weight fraction, high-gloss scratch-resistant heat-resistant grade PMMA composite material includes PMMA, toughening agent, compatibilizer, heat-resistant agent, brightener and auxiliary agent;Toughening agent has core-shell structure, outer shell is the copolymer of styrene and acrylonitrile, inner core is organosiloxane and acrylic rubber;The particle size of toughening agent is 80-120nm;Compatibilizer is MABS;Heat-resistant agent is the copolymer of alpha-methylstyrene and acrylonitrile;Brightener is EBS;Its preparation method is: after being mixed uniformly according to weight ratio, high-gloss scratch-resistant heat-resistant grade PMMA composite material is prepared by twin-screw extruder extrusion granulation.The preparation method of the present application is simple, and the prepared PMMA composite material has the characteristics of high gloss, scratch resistance, high heat-resistant temperature.

The utility model relates to the technical field of rubber production equipment, and discloses an acrylic rubber vacuum briquetting device which comprises a bottom plate, an acrylic rubber briquetting demolding mechanism is arranged at the top of the bottom plate, a vacuum control mechanism is arranged outside the acrylic rubber briquetting demolding mechanism, and a vacuum control mechanism is arranged outside the acrylic rubber briquetting demolding mechanism. The bottom of the bottom plate is fixedly connected with a supporting rod, the acrylate rubber pressing block demolding mechanism comprises an acrylate rubber pressing block assembly and an acrylate rubber demolding mechanism, and the acrylate rubber pressing block assembly is arranged outside the acrylate rubber demolding mechanism. The interior of the mold box is heated through the heating device, the extrusion device is matched for extrusion, so that briquetting is facilitated, a motor drives a rotating plate outside a sliding U-shaped rod to rotate in the motor, so that a baffle is opened, and rapid demolding is facilitated through pushing of the extrusion device; and therefore, the vacuum pump can pump out air in the mold box.

The present application relates to a kind of polyvinyl chloride alloy material and its preparation method and application, belong to polymer material technical field.The polyvinyl chloride alloy material provided by the present application, by weight fraction, includes the following components: polyvinyl chloride resin 59-81 parts, styrene-acrylonitrile-acrylic rubber terpolymer 18-42 parts, pure monomer resin 4-21 parts, inorganic rigid material 2-16 parts, stabilizer 0.5-5.5 parts and acrylic ester processing aid 1-5 parts.The present application introduces pure monomer resin and inorganic rigid material into PVC / ASA simultaneously, while maintaining the flame retardant properties of polyvinyl chloride alloy material, the wear resistance and flame retardant smoke property of product are improved, and the prepared polyvinyl chloride alloy material has excellent wear resistance and flame-retardant low smoke performance.

The present invention aims to provide a laminate of a carboxyl group-containing acrylic rubber composition and a fluororubber composition, which has sufficient adhesiveness by heat-crosslinking / bonding of the carboxyl group-containing acrylic rubber composition and the fluororubber composition. The present invention relates to a carboxyl group-containing acrylic rubber composition containing: (A) a carboxyl group-containing acrylic rubber, (B) a thiuram compound and / or a compound having an N-S bond, (C) a tertiary amine and / or a guanidine compound, and (D) an aliphatic diamine compound and / or an aromatic diamine compound, the carboxyl group-containing acrylic rubber composition having a scorch time t5 at 125°C of 60 minutes or less.

This invention relates to a rubber composition for high-voltage electrical insulators, comprising: (A) a rubber material selected from the group consisting of nitrile rubber, hydrogenated nitrile rubber, acrylic rubber, ethylene propylene diene monomer (EPDM) rubber, and butyl rubber; and (B) a filler selected from the group consisting of carbon black and silica. The filler (B) comprises at least one type of silica, with a silica content of 4.0% by mass or more relative to the total mass of the rubber composition, and a carbon black content of 5.0% by mass or less relative to the total mass of the rubber composition.

This invention relates to the field of adhesive technology, and more particularly to an acrylic ester-based hot melt pressure-sensitive adhesive and its preparation method. Calculated by mass parts, it comprises the following raw materials: 15-30 parts rubber oil, 20-30 parts acrylic rubber, 40-60 parts rosin resin, 0.5-3 parts polyvinylpyrrolidone, 0.5-1.5 parts antioxidant, and 0.5-1.5 parts ultraviolet absorber. The acrylic ester-based hot melt pressure-sensitive adhesive and its preparation method proposed in this invention overcome the limitations of SBC-based hot melt pressure-sensitive adhesives by improving weather resistance and providing a washable detachment response mechanism. It not only achieves durable adhesion but also enables automatic detachment without residue under washing conditions, thus overcoming the shortcomings of existing technologies.

The present invention provides an acrylic rubber containing (meth) acrylamide monomer units and crosslinkable group-containing monomer units selected from at least one of carboxyl group-containing monomer units, halogen atom-containing monomer units, and epoxy group-containing monomer units, the content of the (meth) acrylamide monomer units in all the monomer units being 0.2 to 17.5% by weight.

A phenothiazine derivative represented by the general formula:(wherein R1 is a monovalent aliphatic hydrocarbon group having 1 to 20 carbon atoms or an aralkyl group having 7 to 20 carbon atoms, and R2·Ar is an aralkyl group, wherein R2 is a divalent aliphatic hydrocarbon group having 1 to 10 carbon atoms, and Ar is a monovalent aromatic hydrocarbon group having 6 to 10 carbon atoms), anda carboxyl group-containing acrylic rubber composition comprising, based on 100 parts by weight of carboxyl group-containing acrylic rubber:(A) 0.1 to 5 parts by weight of the phenothiazine derivative represented by the formula [I];(B) 0.1 to 3 parts by weight of a crosslinking agent for carboxyl group-containing acrylic rubber; and(C) 0.1 to 5 parts by weight of a crosslinking accelerator for carboxyl group-containing acrylic rubber.

An acrylic rubber composition comprising 5 to 15 parts by weight of a plasticizer having a solubility parameter SP value (by Small's method) of 8.5 to 10.5 based on 100 parts by weight of super cold resistant grade acrylic rubber having a glass transition point Tg of −42° C. or less, wherein the acrylic rubber composition can give a vulcanizate with the TR10 value, which is an index of cold resistance, of −42° C. or less both initially and after oil dipping. In the acrylic rubber composition, first, the ratio of an acrylate monomer that constitutes acrylic rubber is adjusted, thereby the low temperature characteristics can be maintained even in an oil contact environment. This intentionally reduces the oil resistance of the vulcanized rubber molded product, thereby increasing the amount of oil swelling into the vulcanized rubber molded product and improving the flexibility in a low temperature environment.

Provided is an acrylic rubber composition comprising an acrylic rubber and an aromatic-polyvalent-amine crosslinking agent, wherein the acrylic rubber comprises units of an alkyl (meth)acrylate monomer and / or an alkoxyalkyl (meth)acrylate monomer, and units of a carboxylated monomer. The acrylic rubber has a crosslinking-point equivalent of 10-25 mephr. When a section of an uncrosslinked solid rubber formed from the acrylic rubber composition is subjected to examination with an optical microscope to examine five areas in a 30 mm × 2 mm field of view, then secondary particles of the aromatic-polyvalent-amine crosslinking agent observed in the section have a maximum diameter of 200 μm or smaller.

The present invention aims to provide an acrylic rubber that is excellent in processability while maintaining good normal-state physical properties. The present invention relates to an acrylic rubber containing a structural unit derived from a polyfunctional monomer having two or more double bonds, the acrylic rubber having a ratio of the area value determined from a stress relaxation curve with a relaxation time of 1 second to 120 seconds obtained by a stress relaxation test in accordance with ASTM D1646:2019 to the Mooney viscosity (ML1+4) measured at 100°C in accordance with the Mooney viscosity test of the uncrosslinked rubber physical test method of JIS K 6300-1:2013 that is 20 to 32.

A transfer belt includes a base layer and an elastic layer disposed on the base layer. The elastic layer has an outer face that has surface asperities defined by spherical particles. The elastic layer includes acrylic rubber and an ion conductant. The ion conductant includes an anionic component made of bis(trifluoromethanesulfonyl)imide (TFSI).

The application provides a hot-pressing insulation film, a flexible flat cable and a preparation method and application thereof. The hot-pressing insulation film comprises a base material layer and an adhesive layer which are attached to each other; the preparation raw material of the adhesive layer comprises a modified unsaturated polyester resin, an acrylic rubber, an epoxy resin, an initiator, a curing agent and a flame retardant. The flexible flat cable comprises at least three wires and the hot-pressing insulation film covering both sides of the surface of the wires; the preparation method of the flexible flat cable comprises the following steps: placing a hot-pressing insulation film on the upper surface and the lower surface of the wires respectively, carrying out rolling, and then sequentially carrying out photocuring and heat curing to obtain the flexible flat cable. The hot-pressing insulation film provided by the application has excellent performance, and the flexible flat cable prepared by the application has good flame retardant performance, good high-temperature and high-humidity resistance and good cold and hot impact resistance.

Provided are a thermoplastic resin composition and a molded product manufactured therefrom, the thermoplastic resin composition including, based on 100 parts by weight of a base resin including (A) 75 to 85 wt % of a polycarbonate resin; (B) 7 to 15 wt % of an acrylic rubber-modified aromatic vinyl graft copolymer; and (C) 7 to 13 wt % of an aromatic vinyl-vinyl cyanide copolymer; (D) 0.7 to 5 parts by weight of zinc oxide (ZnO); and (E) 0.2 to 0.6 parts by weight of a phosphorus-based compound represented by Chemical Formula 1.(RO)nP(═O)(OH)3-n  [Chemical Formula 1]In Chemical Formula 1,n is an integer of 1 to 3, andR is selected from a substituted or unsubstituted C1 to C30 alkyl group, a C2 to C30 alkenyl group, a C2 to C30 alkynyl group, a substituted or unsubstituted C1 to C30 and a substituted or unsubstituted C3 to C30 heteroaryl group.

Disclosed is a film adhesive containing an epoxy resin, a phenol resin, an acrylic rubber, an inorganic filler, and a dispersant having a polar group. The inorganic filler is formed from a substance that has a thermal conductivity of 10–2000 W / (m·K) at 20°C. The inorganic filler content is 50–90 mass% of the total mass of the film adhesive. The contained amount of the dispersant having a polar group is 0.15 pts.mass or more with respect to 100 pts.mass of the total amount of the inorganic filler.

A rubber composition comprising acrylic rubber and a nonionic emulsifier, wherein more than 0% by mass and less than 80% by mass of the total mass of the nonionic emulsifier are fixed on the acrylic rubber.

To provide a thermoplastic resin film excellent in tear strength.SOLUTION: The thermoplastic resin film of the present disclosure has a surface layer including an acrylic resin composition containing a methacrylic resin, first acrylic rubber particles having an average particle size of 50 nm or more and less than 160 nm up to an outermost crosslinked rubber component layer, second acrylic rubber particles having an average particle size of 160 nm or more and 300 nm or less up to the outermost crosslinked rubber component layer, an acrylic block copolymer, a back layer containing a vinyl alcohol resin, and an intermediate layer containing a thermoplastic elastomer. In the acrylic resin composition, the total amount of the portion up to the outermost crosslinked rubber component layer of the first acrylic rubber particles is 22 to 60% by mass, the total amount of the portion up to the outermost crosslinked rubber component layer of the second acrylic rubber particles is 2 to 10% by mass, the total amount of the acrylic block copolymer is 5 to 30% by mass, and the acetone insoluble fraction is 46 to 70% by mass.SELECTED DRAWING: Figure 1

An acrylic rubber contains a (meth)acrylate, a vinyl carboxylate, and ethylene, as monomer units. A content of the vinyl carboxylate is 15% by mass or more and a content of the ethylene is 5% by mass or more, based on a total amount of the monomer units in the acrylic rubber.

Provided is a modifier for a polyamide resin, which is capable of improving impact strength and fluidity while maintaining excellent appearance of a polyamide resin composition. A modifier for a polyamide resin, comprising polymer particles and an acid, the polymer particles having a core-shell structure comprising a shell layer and one or more core layers, at least one of the core layers comprising a polybutadiene, a poly (butadiene-styrene), or an acrylic rubber, the shell layer is composed of a polymer comprising 50% by weight or more of a methacrylate monomer and 0-50% by weight of another monomer that is copolymerizable with the methacrylate monomer.

Provided is an acrylic rubber sheet having excellent roll processability and Banbury processability. The acrylic rubber sheet according to the present invention has an ionic reactive group. The ratio (Mz / Mw) of the z-average molecular weight (Mz) to the weight average molecular weight (Mw) found in the absolute molecular weight distribution obtained by GPC-MALS is 1.8 or greater, and the gel content is 30 wt% or less.

The invention relates to the technical field of cables, and provides a high-flame-retardant wire cable and a preparation method thereof. The invention relates to a high-flame-retardant wire and cable, which sequentially comprises a conductor, an insulating layer, a shielding layer, a fire-resistant layer, an armor layer and a sheath layer from inside to outside, the conductor is a copper conductor, the insulating layer is a cross-linked polyethylene insulating layer, and the sheath layer is prepared from the following raw materials in parts by weight: 100 parts of polyvinyl chloride resin, 20-30 parts of ethylene propylene diene monomer, 10-15 parts of ethylene-ethyl acrylate copolymer, 20-30 parts of flame retardant, 10-15 parts of filler, 1-3 parts of cross-linking agent, 1-2 parts of lubricant and 3-5 parts of stabilizer. According to the technical scheme, the problem of insufficient flame retardance of the sheath layer in the prior art is solved.

The present invention relates to a rubber composition for a high-voltage electrical insulator, the rubber composition containing (A) a rubber material that is selected from the group consisting of a nitrile rubber, a hydrogenated nitrile rubber, an acrylic rubber, an ethylene propylene diene rubber, and a butyl rubber, and (B) a filler that is selected from the group consisting of carbon black and silica. The filler (B) contains at least one type of silica, the content of silica with respect to the total mass of the rubber composition is 4.0 mass% or more, and the content of carbon black with respect to the total mass of the rubber composition is 5.0 mass% or less.

To suppress significant softening degradation observed at an early stage of thermal oxidative degradation of a crosslinked acryl rubber and suppress deterioration of mechanical strength.SOLUTION: An acryl rubber mixture comprises: a carboxyl group-containing acryl rubber A that comprises anα,β-unsaturated carboxylic acid monomer and an alkyl (meth)acrylate monomer and / or an alkoxyalkyl (meth)acrylate monomer as monomer units; and a carbamate group-containing acryl rubber B that comprises a carbamate group-containing (meth)acrylate monomer represented by a general formula [I] (where, R1: a hydrogen atom or a methyl group and R2: a C1-10 bivalent aliphatic hydrocarbon group) and an alkyl (meth)acrylate monomer and / or an alkoxyalkyl (meth)acrylate monomer as monomer units.SELECTED DRAWING: None