43results about How to "Improve processability" patented technology

Natural rubber obtained by a deproteinizing treatment of a natural rubber latex and has a total nitrogen content adjusted in the range of 0.12 to 0.30% by weight and a rubber composition and a pneumatic tire using the natural rubber. The processability of natural rubber can be improved without adverse effects on the physical properties proper to natural rubber. The rubber composition exhibits an improved low hysteresis loss property and improved abrasion resistance and can be advantageously used for the tire case members and the tire tread of pneumatic tires.

The invention relates to a dumb thermoplastic polyurethane elastomer composition and a preparation method thereof, belonging to the technical field of high polymer materials. The dumb thermoplastic polyurethane elastomer composition comprises the following components in percentage by weight: 60%-90% of thermoplastic polyurethane elastomer, 5%-30% of styrene block copolymer resin, 0%-15% of rubberprocessing oil, 2%-6% of compatilizer and 0.1%-0.3% of antioxidant. The invention also relates to the preparation method of the composition. Compared with the prior art, styrene-ethylene-butene-styrene (SEBS) is used as the fogging agent of the thermoplastic polyurethane (TPU) polymer, the obtained product has a dumb surface and a good surface scratch resistance effect, and the surface dumb degree of the product can be regulated at random according to the factual requirement; and simultaneously, by using the method, the problem that the viscosity of the TPU polymer is mutated at the vicinity of a boiling point along with the variation of the temperature in the course of processing is solved, thereby greatly improving the workability of the TPU polymer.

A multimodal polyethylene composition, in particular suitable for the preparation of films, but also textile articles, blow molded articles and injection molded articles is described. The polyethylene composition of the invention comprises at least three ethylene polymer fractions having distinct molecular weights or comonomer contents, said at least three ethylene polymer fractions comprising at least one first ethylene polymer fraction having a first molecular weight, a first comonomer content lower than a predetermined value and a first density; at least one second ethylene polymer fraction having a second molecular weight higher than said first molecular weight, a second comonomer content higher than said first comonomer content, and a second density; and at least one third ethylene polymer fraction having a third molecular weight higher than said first molecular weight, a third comonomer content lower than a predetermined value, and a third density; wherein said at least one first ethylene polymer fraction and said at least third ethylene polymer fraction are prepared by the use of a first and, respectively, third catalyst and said at least one second ethylene polymer fraction is prepared by the use of a second catalyst of the single site type. The films prepared from the composition of the invention have improved water vapor barrier properties. Furthermore, a mixed catalyst system comprising at least three catalyst components and a process particularly suitable to prepare the composition of the invention are described.

The invention relates to an all-steel load radial tire tread base rubber material and a preparation method thereof. The base rubber material comprises the following raw materials in parts by weight: 100 parts of natural rubber, 0-0.3 part of a peptizer, 30-45 parts of carbon black, 7-18 parts of white carbon black, 1-4 parts of a silane coupling agent, 3-5 parts of zinc oxide, 1-3 parts of stearic acid, 1-3 parts of phenolic tackifying resin, 0.5-3 parts of petroleum resin, 0.5-2 parts of an anti-aging agent 6PPD, 0.5-2 parts of an anti-aging agent RD, 1-3 parts of sulfur, 0.8-3 parts of an accelerator and 0-0.3 part of a scorch retarder. Petroleum resin is added to improve the medium-term and long-term viscidity of a tire tread half member so that the tread is well bonded with belt layers during molding and the phenomenon of delamination of a tread crown is improved. The material disclosed by the invention has the advantages of good thermal resistance and aging resistance, low heat generation and tear resistance and the problem of pattern groove cracking of the finished tread is improved.

The invention provides a sealing strip coating rubber and a preparation method thereof, and a car door sealing strip and a preparation method thereof. The sealing strip coating rubber is prepared from the following components parts by weight: 50-70 parts of ethylene propylene diene monomer rubber K8340A, 60-100 parts of ethylene propylene diene monomer rubber K4551A, 5-7 parts of zinc oxide, 1 part of polyethyleneglycol PEG-4000, 2 parts of stearic acid, 1 part of dispersing agent WB16, 1.4-1.6 parts of ultraviolet absorbent, 9-11 parts of high-polymer polyethylene wax, 4-6 parts of black factice, 0.7-0.9 part of foaming agent AC, 90-130 parts of carbon black SP5000, 40-6 parts of light calcium carbonate, 30-50 parts of paraffin oil P-2286T, 8-12 parts of moisture absorber CaO, 5-7 parts of accelerator and 1.0-1.4 parts of sulfur. The sealing strip coating rubber can be coated on the outer side of the sealing part in the existing car door sealing strip, and can overcome the defects in the existing gelatin-sponge-structure sealing part.

The invention discloses an epoxy modified saturated polyester resin for an undercoat of a coil coating and the undercoat of the coil coating. The epoxy modified saturated polyester resin comprises the following components in parts by weight: 50-80 parts of methylpropanediol, 100-140 parts of epoxy resin 609, 110-150 parts of isophthalic acid, 110-150 parts of hexanedioic acid, 105-145 parts of neopentyl glycol, 0.1-0.6 part of organic tin, 20-40 parts of dimethylbenzene, 380-500 parts of S-150# solvent oil and 30-60 parts of propylene glycol monomethyl ether. The prepared epoxy modified saturated polyester resin is applied to the undercoat of the coil coating, so that the undercoat of the coil coating is high in adhesion and corrosion resistant performance to metals, high in machinability, high in deformation property under high surface hardness and weather ability and low in cost, and the comprehensive performance is obviously improved.

This invention is directed to a thermoplastic polyurethanes composition comprising polyether-based thermoplastic polyurethane and 1,2-cyclohexane dicarboxylic acid ester and preparation processes thereof. The thermoplastic polyurethane composition has a good mold release behavior in injection molding without undesirably significant shrinkage and surface blooming of final product.

This invention provides a resin for light guiding plates which retains physical properties as acrylic resins such as transparency and exhibits good processability with minimum scorching of an edge during polishing or cutting. This resin for light guiding plates is made of a polymer prepared by polymerizing a mixture comprising 100 parts by weight of a polymerizable material consisting of 91 to 100% by weight of methyl methacrylate and 0 to 9% by weight of a monofunctional acrylate, and 0.01 to 2 parts by weight of a polyfunctional (meth)acrylate. The resin preferably comprises 0.01 to 1000 ppm of a diffusing agent.

A flexible, pressure-resistant and oil-resistant hose having excellent durability and pressure-resistant properties, light in weight, and low in cost. A flexible, pressure-resistant and oil-resistant hose provided with a soft body section (2) having a substantially flat inner surface, and also with a helical hard core material section (3) provided on the outer surface of or within the soft body section (2) so as to reinforce the soft body section (2), wherein the soft body section (2) consists of an oil-resistant thermoplastic elastomer. The flexible, pressure-resistant and oil-resistant hose can also be configured as follows, for example: a mesh-like section (4) consisting of a large number of reinforcing threads is provided within the soft body section (2) and the hard core material section (3) is helically provided to the outer surface of the soft body section (2); or the hard core material section (3) particularly is constructed from a metal wire, the hard core material section (3) is provided to the outer surface of the soft body section (2), and an outer coating layer (6) consisting of a wear-resistant thermoplastic elastomer is provided to the outer surface side of the hard core material section (3); or the hard core material section (3) is provided within the soft body section (2) and an inner coating layer (7) consisting of an oil-resistant thermoplastic elastomer is provided to the soft body section (2) so as to cover the inner surface thereof.

This invention relates to compounds and compositions used to prepare semiconductor and optoelectronic materials and devices. This invention provides a range of compounds, compositions, materials and methods directed ultimately toward photovoltaic applications, as well as devices and systems for energy conversion, including solar cells. In particular, this invention relates to molecular precursor compounds, precursor materials and methods for preparing photovoltaic layers.

The disclosure relates to a tape with nonlinear field control properties containing ZnO microvaristor particles. The doped ZnO particles are produced by crushing a sintered ZnO block, by desagglomeration or crushing of calcinated granulated particles, or by crushing of a calcined or sintered tape (tape casting). Embodiments, among other things, relate to: hollow ZnO microvaristor particles produced by granulation technique, having reduced average density and having diameters in a range well below 90 μm; and compounding the Zno filler in binders that are used to impregnate tapes. Compared to nonlinear field control tapes with conventional embedded nonlinear filler particles, a stronger and more reliable nonlinear resistivity is achieved and the ZnO filler is simpler to produce and to compound in the binder. The resulting tapes are flexible, preferably self-adhesive and have a strong nonlinear electrical resistivity. The tapes are useful to protect high field-stress regions in electrical components.

The present invention relates to an electrode comprising electrode active material particles, conductive particles, a binder and wax, wherein the electrode active material particles are interconnected by a network of the conductive particles, and the paths of the conductive particles interconnecting the electrode active materials are partially or entirely fixed by the wax. Furthermore, the present invention provides an electrochemical device comprising the electrode.

By use of wax having a low meting viscosity in order to partially or entirely fix the paths of the conductive particles, which interconnect the spaced electrode active material particles, the present invention can improve processability and safety of the electrochemical device.

A chuck table holds a workpiece having a warp. The chuck table includes a suction holding member having a suction holding surface for holding the workpiece under suction, and an annular seal member provided around the outer circumference of the suction holding member for supporting a peripheral portion of the workpiece. The annular seal member is formed from an elastic member. The upper surface of the annular seal member is set higher in level than the suction holding surface according to the warp of the workpiece. In holding the workpiece on the chuck table under suction, vacuum leaking from the gap between the workpiece and the suction holding surface due to the warp of the workpiece is applied to the space defined by the workpiece and the annular seal member, thereby elastically deforming the annular seal member to flatten the upper surface of the workpiece.

The present invention relates to a structure for mounting a temperature sensor on a steam generator, which enables easy and convenient mounting of a temperature sensor on a steam generator. For this, the present invention provides a structure for mounting a temperature sensor on a steam generator in a drum type washing machine including a case which is an exterior of the steam generator, the temperature sensor provided to the case for sensing a temperature of steam generated by a heater, a bracket for fixing the temperature sensor, a fastening portion provided to the case for fastening the bracket to the case with separate fastening members, and a bracket rotation preventive portion provided to the case for preventing the bracket from rotating at the time the temperature sensor is mounted.

The invention discloses a polyethylene heavy packaging film resin composition and a preparation method thereof. Taking the weight of linear low density polyethylene (LLDPE) as 100%, the resin composition comprises: (1) LLDPE fusant, wherein the flow rate of the fusant is 0.5-10 g/10min; (2) a complex cross-linking additive composed of 1,1-dimethylethyl-hydrogen peroxide and benzoyl peroxide, wherein the total use amount is 0.27%-0.49%; and (3) 7%-25% of LLDPE-g-PS graft copolymer. A polyethylene heavy packaging film which is provided with high strength and good straightness and can ensure high-speed packaging can be produced by blowing the composition in a manner of not adding any addition agent, such as a slipping agent, an opening agent, a processing modifier and the like, wherein the film thickness is 0.13-0.15 mm, and the breadth of the film is 550 mm. The invention further discloses the preparation method of the resin composition.

A cord fabric is structured by weaving a weft yarn into a large number of warp yarn (2) disposed in parallel so that the weft yarn crosses the warp yarn at a coarse density. In the cord fabric, the warp yarn is a composite cord constituted of at least one aramid first twist yarn and one aliphatic polyamide first twist yarn, and the weft yarn is a spun yarn of meta system aramid fiber. The cord fabric is used as a strip material of a belt cover layer which is wound in a spiral pattern around an outer circumference of a belt layer of a pneumatic tire in a radial direction.

The invention provides a copper alloy tube used for heat exchange. The advantage of high strength of the copper alloy tube is maintained, and simultaneously, the process performance is enhanced, and the production performance is enhanced by inhibitaing the pressure increase in heat extrusion. The copper alloy tube used for heat exchange is formed by tubular copper alloy, wherein the contents are provided as following: 0.1 to 1.0 mas% of Mn, 0.05 to 0.5 mas% of Fe and 0.01 to 0.1 mas% of P, with the remaining being Cu and unavoided impurity, and the mass ratio of Fe to P is about 2 to 8.

A rubber composition having well-balanced improved processability before vulcanization, air barrier property after vulcanization, and age resistance after vulcanization, and is useful for manufacturing a tire inner liner is disclosed. The rubber composition comprises: (A) a rubber component comprising 50 wt % or more of one or more butyl-based rubbers selected from the group consisting of butyl rubbers and halogenated butyl rubbers; and

• • (B) 3 to 20 parts by weight of a process oil with respect to 100 parts by weight of rubber component (A); wherein the process oil is comprised of aromatic hydrocarbon(s), paraffinic hydrocarbon(s), and naphthenic hydrocarbon(s), and when the weight percentages of the carbons constituting the aromatic hydrocarbons, the carbons constituting the paraffinic hydrocarbons, and the carbons constituting the naphthenic hydrocarbons in the process oil, as determined according to ASTM D2140, are expressed by C_A, C_P, and C_N, respectively, C_A, C_P, and C_N are respectively within a range as follows: 20 wt %≦C_A≦40 wt %, 30 wt %≦C_P≦60 wt %, and 20 wt %≦C_N<30 wt %.

The invention discloses a mixing silicon rubber composition for an anti-dynamic fatigue key and relates to the technical field of rubber. The composition is characterized by consisting of the following components in part by mass: 50 to 80 parts of methyl vinyl silicone rubber crude rubber, 20 to 40 parts of alpha, omega-dihydroxyl polydimethyl siloxane of which the kinematic viscosity is 45,000m m<2>/s, 1 to 3 parts of alpha, omega-dihydroxydimethylpolysiloxane of which the kinematic viscosity is 90m m<2>/s, 20 to 50 parts of white carbon black, 0.1 to 0.5 part of 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane, and 0.01 to 1 part of zinc stearate. By adding dihydroxyl siloxane, the processability of the mixing silicon rubber is improved, and low-molecular-weight cyclosiloxane cannot be oozed after the silicon rubber key is used repeatedly, so that the current conduction obstacles on a part of a pressed point can be avoided.

A nitrile rubber composition comprising 1,000 to 1,200 parts by weight of a magnetic powder having a compressed density of 3.4 to 3.7, based on 100 parts by weight of nitrile rubber, hydrogenated nitrile rubber, or a blend rubber thereof, the rubber having a Mooney viscosity ML₁₊₄ (100° C.) of 20 to 50. The nitrile rubber composition that does not undergo deterioration of roll processability and adhesion to molds during product vulcanization even when a large amount (e.g., 1,000 parts by weight or more) of magnetic powder is added based on 100 parts by weight of nitrile rubber, hydrogenated nitrile rubber, or a blend rubber thereof.

The vulcanizable rubber mixture according to this invention is used for rubber products in particular vehicle tires and vehicle tire treads, but also technical rubber products like belts on conveyor systems, technical hoses, vibration dampers and impact dampers, or wire coatings. All these products benefit from the improved processability that is achieved with the invention in that the mixture comprises a polymer represented by the formula F1-A-F2, or a mixture of F1-A-F2 with an astral or radial coupling product of F1-A-units, coupled by a multivalent coupling agent; wherein F1 represents a terminal functionalization of the polymeric chain, F2 represents a terminal functionalization different from F1; and A represents the polymeric chain of a polymer formed by the copolymerization between one or more conjugated dienes with one or more aromatic vinyl monomers.

The present invention is integral piston with embedded blade and its manufacture. The integral piston includes blade and piston, which are mounted via interference embedding, that is, interference fitted via slot with narrow opening in the piston and blade tail matching the slot. The manufacture process includes finish mechining the outer circle of the piston and the two side faces of the blade, interference embedding, and integrally finish machining the two ends and inner hole of the piston. The present invention has improved machinability of integral piston, low cost and high quality, and provides condition for selecting different material and machining process of the piston and the blade.

Provided is a copper foil composite with improved processibility. The copper foil composite is constituted of a laminate of a copper foil and a resin layer. The copper foil has a breaking strain of not less than 5%. The copper foil composite satisfies the relation represented by the following formula: (F T)/(f t)=1, where t denotes the copper foil thickness, f denotes the stress in the copper foil at a tensile strain of 4%, T denotes the thickness of the resin layer, and F denotes the stress in the resin layer at a tensile strain of 4%.

The present invention provides an improved elastomeric composition that includes from about 0.01 to about 0.5 weight percent of a polyorganosiloxane or a combination of polyorganosiloxanes.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a carbon dot composite conductive agent and a preparation method and application thereof. The preparation method comprises the following steps: mixing 1, 3-dihydroxy naphthalene and potassium periodate according to the mass ratio of 1: 2-1: 8, synthesizing a precursor through solvothermal reaction, and dialyzing or centrifuging the precursor to obtain a conductive carbon dot material; mixing a conductive carbon dot material and a multi-walled carbon nanotube, adding a mixture obtained through mixing and a dispersing agent into a solvent according to a certain mass ratio, performing high-viscosity stirring, dilution and ultrasonic dispersion, and obtaining the carbon dot composite conductive agent. The invention also discloses a positive plate, a negative plate and a lithium ion battery comprising the carbon dot composite conductive agent. When the conductive agent obtained by the preparation method is applied to the lithium ion battery, the dispersing capacity of a conductive material in a solvent can be improved, the processing performance of conductive slurry is improved, and the conductivity of the lithium ion battery is improved.

The purpose of the present invention is to prevent delamination caused by interfacial fracture between a tack-free layer (11) and a heat-conductive layer (12). Within a tack-free layer (11), an inorganic filler (22) of median particle size of 0.5 mu m is included in a thermoplastic resin (21) that is of a glass transition temperature of greater than or equal to 60 DEG C. An adhesive surface (26) is texurized, and a heat-conductive layer (12), which is in contact with the adhesive surface (26), is placed. Without strengthening the adhesive force of the surface on the opposite side of the adhesive surface (26), adhesive force between the tack-free layer (11) and the heat-conductive layer (12) is strengthened as a result of an anchoring effect caused by the textured adhesive surface (26).

A biodegradable polyester resin composition containing 30 to 60 parts by weight of (A) a polylactic acid, 25 to 45 parts by weight of (B) a poly-3-hydroxyalkanoate, and 5 to 25 parts by weight of (C) an aliphatic-aromatic polyester, based on 100 parts by weight in total of (A) the polylactic acid, (B) the poly-3-hydroxyalkanoate, and (C) the aliphatic-aromatic polyester. The biodegradable polyester resin composition further contains 0.05 to 20 parts by weight of (D) pentaerythritol, 10 to 40 pans by weight of (E) a silicate, and 0 to 3 parts by weight of (F) a compatibilizer having an epoxy group, relative to 100 parts by weight in total of (A) the polylactic acid, (B) the poly-3-hydroxyalkanoate, and (C) the aliphatic-aromatic polyester.

The invention discloses polyester resin for an aluminum coil ceiling board and a preparation method thereof. The polyester resin is prepared from dimethyl terephthalate, methylpropanediol, neopentyl glycol, hexanedioic acid, isophthalic acid, tetrabutyl titanate, triphenyl phosphite, xylene, S150 arene and n-butyl acetate. The polyester resin for the aluminum coil ceiling board prepared by a novelingredient system provided by the invention passes the performance detection; the hardness and the weather resistance performance of the polyester resin prepared by the method are identical to thoseof polyester resin in the prior art; the processing performance is better than that of the polyester in the prior art; the cost is lower than that in the prior art; the popularization and the use areeasy; good technical effects are obtained.

The present disclosure provides a primer composition. In an embodiment, the primer composition includes a functionalized polyolefin, a functionalized styrenic block copolymer containing greater than or equal to 20 wt% polymerized styrene, a solvent composition and an isocyanate component. The primer composition is suitable for use as an adhesive layer between a substrate and a polyolefin layer.

The present invention relates to pharmaceutical compositions comprising Akt protein kinase inhibitors with therapeutic activity against diseases such as cancer as well as processes for their preparation and their use as medicament.