53results about How to "Excellent flowability" patented technology

An electrophotographic toner is formed of a resinous composition including a binder resin and a wax (A). The wax (A) contains at least 92 wt. % thereof of n (normal)-paraffin comprising a plurality of n-paraffin species having different numbers of carbon atoms, and provides a DSC (differential scanning calorimetry)-heat-absorption curve exhibiting a maximum heat-absorption peak showing a peaktop temperature of 70-90° C. and a half-value width of at most 12° C. As a result of the n-paraffin-rich characteristic and the DSC-thermal characteristic, the wax can exhibit an improved fixability-improving effect without showing an excessive plasticizing effect, whereby the toner can exhibit good fixability as well as good flowability and storage stability.

Disclosed is a thermoplastic elastomer composition including a thermoplastic elastomer (A) having a side chain having at least one member selected from the group consisting of imino group, nitrogen-containing heterocycle and covalent crosslink site, and a carbonyl-containing group, and an ethylene-propylene copolymer (B) comprising propylene block and ethylene-propylene block. The thermoplastic elastomer of the present invention exhibits excellent high temperature flowability and mechanical strength while retaining its excellent flexibility.

A polycarbonate resin composition according to the present invention comprises a polycarbonate resin and an ultra-high molecular weight branched acrylic copolymer resin and can have excellent transparency, appearance, and flowability, as well as scratch resistance and impact strength.

Hydrophobic spherical silica microparticles are provided. The microparticles are obtained by subjecting hydrophilic spherical silica microparticles obtained by subjecting a tetrafunctional silane compound and / or a partial hydrolysis-condensation product thereof to hydrolysis and condensation, to a two stage hydrophobic treatment introducing R1SiO3 / 2 units wherein R1 is a monovalent hydrocarbon group and then introducing R23SiO1 / 2 units wherein R2 represents monovalent hydrocarbon groups. The hydrophobic spherical silica microparticles have basic flowability energy of not more than 500 mJ, and a particle size within a range from 0.005 to 0.09 μm. The silica microparticles have excellent flowability and dispersibility, and minimal aggregability, and are useful as a toner external additive.

A flame-retardant resin composition comprising (A)(1) a resin component containing an aromatic polycarbonate resin and a styrene-containing resin or (2) a resin component containing a polyphenylene ether resin and a polystyrene, and (B) a flame retardant that is a phosphoric ester of the following formula (I), wherein each of R1, R2, R3 and R4 is independently an aryl group having 6 to 12 carbon atoms, each of R5 and R6 is independently methyl or a hydrogen atom, each of R7 and R8 is methyl, m1 and m2 are 0 or integers of 1 or 2, each of a, b, c and d is independently 0 or 1, and n is 0 or an integer of 1 or 5.

A nonaqueous ink composition for an ink jet recording, comprising(A) a urethane resin dispersant with an acidic functional group,(B) a pigment, and(C) an organic solvent [and optionally (D) a thermal reactive compound],characterized in thatthe urethane resin dispersant (A) is a branched urethane resin dispersant prepared by polymerizing a terminal-isocyanate-containing compound (p), which has been prepared by reacting(a) a polyisocyanate having three or more isocyanate groups, and(b) a monoalcohol,under the condition that a molar ratio (Ma / Mb) of the number of moles (Ma) of isocyanate groups (NCO) from the polyisocyanate (a) to the number of moles (Mb) of hydroxyl groups (OH) from the monoalcohol (b) is 3 / 2 to 3 / 0.5,(c) a compound having one or more acidic groups and two or more hydroxyl groups, and(q) a polyol compound having two or more hydroxyl groups via 1 to 30 atoms,under the condition that the hydroxyl groups are in excess; andin that 25% to 60% by weight of the polyisocyanate (a) is used with respect to a total amount of nonvolatile components in the branched urethane resin dispersant, is disclosed.

A brominated diphenyl ethane mixture of the present invention comprises about 0 to about 2% by weight of pentabromodiphenyl ethane, about 55 to about 85% by weight of hexabromodiphenyl ethane, about 1 to about 20% by weight of heptabromodiphenyl ethane, about 1 to about 25% by weight of octabromodiphenyl ethane, about 0 to about 10% by weight of nonabromodiphenyl ethane, and about 0 to about 5% by weight of decabromodephenyl ethane. The brominated diphenyl ethane mixture can be added to thermoplastic resin as a flame retardant, can exhibit excellent compatibility with thermoplastic resins, can minimize the generation of environmental problems, and can obtain excellent impact resistance, thermal stability, weatherability and flowability as well as improved flame resistance.

Disclosed is a thermoplastic elastomer composition comprising 100 parts by weight of EPDM rubber, 5-1,000 parts by weight of styrenic thermoplastic elastomer, 50-3,000 parts by weight of paraffin oil, 10-200 parts by weight of a polyolefin resin as a curative, 1-15 parts by weight of a phenolic resin, and 0.5-5 parts by weight of a curing activator. The composition is superior in flowability, mechanical properties and oil resistance as well as being low in hardness, so that it can be applied for automobile parts.

A thermoplastic resin composition that can have improved flowability of the present invention comprises (A) about 1 to about 98% by weight of a functional group-containing vinyl copolymer resin reactive with polyester; (B) about 1 to about 98% by weight of an aromatic vinyl graft copolymer resin; (C) about 1 to about 98% by weight of a polyester resin; and (D) about 0.5 to about 30 parts by weight of a bromodiphenyl ethane mixture, based on the total weight of a base resin comprising (A), (B) and (C). The resin composition of the present invention can have flame retardancy, excellent impact resistance, and improved flowablity.

The present invention provides a toner that exhibits excellent low-temperature fixing properties, offset resistance, and has excellent storage stability in a developing machine. The toner has, in a DSC curve obtained by measuring the toner with differential scanning calorimeter, a glass transition temperature (Tg1) measured in a first scan of 50.0 to 70.0° C. and a temperature difference (Tg1−Tg2) between the glass transition temperature (Tg1) measured in the first scan and a glass transition temperature (Tg2) measured in a second scan ranging from 3.0 to 20.0° C.

An object of the present invention is to provide a methacrylic resin composition which exhibits excellent flexibility, elasticity, impact resistance, and plasticity and moldability while transparency inherent to methacrylic resins is maintained. A methacrylic resin composition to be produced is composed of 10 to 99 parts by mass of a methacrylic resin (A) containing not less than 80 mass % of a methyl methacrylate unit and 90 to 1 part by mass of a block copolymer (B) containing 10 to 60 mass % of a methyl methacrylate polymer block (b1) and 90 to 40 mass % of an acrylate polymer block (b2) and having a refractive index of 1.485 to 1.495 (the total of (A) and (B) is 100 parts by mass).

A curable resin composition, which is a solid resin at ordinary temperatures obtained by reacting an epoxy resin with a (meth)acrylic anhydride, contains an unsaturated resin having a (meth)acryloyl group (A) which has a double bond equivalent weight of 200 to 500, an ester number of 100 to 300, and a hydroxyl number of no more than 130, an ethylenically unsaturated monomer (B), and a radical polymerization initiator (C).

A flavored artificial sweetener is made of a carrier, such as dextrose and the like, that is milled together with a flavoring agent. The mixture is then commingled with a second bulking agent, such as maltodextrin and a sweet agent, such as aspartame. The resulting sweetener has excellent taste characteristics and flowability. It can be packaged in small envelopes, canisters or bulk containers.

The present invention provides a binder resin solution composition, and a coating, ink, and adhesive containing the composition as an active ingredient, the binder resin solution composition having a solid content of 10 to 50 wt. % and comprising (a) a chlorinated polyolefin prepared by chlorinating an isotactic polypropylene polymer having a molecular weight distribution of no more than 3 and a melting point measured by a differential scanning calorimeter of 110 to 140° C. to a chlorine content of 10 to 40 wt. % and, (b) an organic solvent.

This invention is a polyester resin composition comprising 100 parts by weight of a resin composition consisting of 60 to 95 wt % of (a) a polyester resin and 5 to 40 wt % of (b) an olefin-based resin, and 0.5 to 30 parts by weight of (c) one or more resins selected from polyphenylene sulfide resins and liquid crystal resins, wherein said olefin-based resin (b) is composed of (b-1) a functional group-containing olefin copolymer having at least one kind of functional groups selected from carboxylic acid groups, carboxylic anhydride groups, carboxylic ester groups, metal carboxylate groups and epoxy groups and (b-2) an ethylene / a-olefin copolymer obtained by copolymerizing ethylene and an a-olefin with 3 to 20 carbon atoms; and the polyester resin (a) forms a continuous phase, while the olefin-based resin (b) is dispersed as particles with an average particle size of 0.01 to 2 μm in the composition. This invention provides a polyester resin composition having excellent flexibility and impact resistance in a low-temperature atmosphere, also having excellent flowability and chemicals resistance, and suitable for injection molding.

One aspect of the invention relates to a transparent ABS resin composition having excellent impact resistance and flowability, which comprises about 10 to about 50 parts by weight of a rubber / (meth)acrylate-aromatic vinyl-unsaturated nitrile graft copolymer; about 50 to about 90 parts by weight of a thermoplastic resin matrix; and about 0.2 to about 0.5 parts by weight of a fluidizer, per 100 parts by weight of a base resin comprising the rubber / (meth)acrylate-aromatic vinyl-unsaturated nitrile graft copolymer and the thermoplastic resin matrix.

Black composite particles for a semiconductor sealing material of the present invention, comprises:an extender pigment as a core particle; anda black pigment formed on surface of the extender pigment in an amount of from 1 to 100 parts by weight based on 100 parts by weight of the extender pigment, and a semiconductor sealing material by using the black composite particles. Such black composite particles are not only enhanced in blackness, moisture resistance, fluidity and tinting strength, but also show an excellent dispersibility in binder resins, and the semiconductor sealing material is capable of exhibiting a high volume resistivity as well as excellent blackness, moisture resistance, soldering heat resistance, flowability and flexural strength.

A flame retardant thermoplastic resin composition includes (a) a polycarbonate resin, (b) an impact modifier, and (c) resorcinol bis(diphenyl phosphate). The impact modifier includes (b1) a large rubber particle-modified vinyl graft copolymer wherein the rubber particle has an average particle diameter of about 0.3 to about 0.7 μm, and (b2) a small rubber particle-modified graft copolymer wherein the rubber particle has an average particle diameter of about 0.05 to about 0.27 μm. The flame retardant thermoplastic resin composition can have excellent flowability, mold formability, flame retardancy, impact strength, and gloss characteristics.

A composite cured silicone powder comprising: (A) a cured silicone powder having an average particle size of 0.1 to 500 μm, (B) an inorganic fine powder coated on the surface of said cured silicone powder and (C) a monohydric or polyhydric alcohol with a boiling point of at least 150° C. coating on the surface of component (A) and / or component (B). The composite cured silicone powder that has an excellent flowability, hydrophilicity, and dispersibility. And, this invention also relates to a production method of the composite, which is characterized by mixing components (A) to (C) under the condition of mechanical shearing.

The present invention provides anhydrous dicalcium phosphate particles which satisfies the conflicting requirements of the improvement of handling properties such as high flowability and a small bulk and the improvement of tableting properties at the same time during preparation and a method of producing the same.The method of producing anhydrous dicalcium phosphate by heating water suspensions of a phosphoric acid compound and a calcium compound at 50 to 100° C., comprises the step of:heating the phosphoric acid compound and the calcium compound at 75° C. or higher in advance to carry out a neutralization reaction in the presence of an alkali to obtain agglomerated anhydrous dicalcium phosphate particles.

The present invention relates to an epoxy resin composition for semiconductor encapsulation, including the following components (A) to (E), in which the component (D) is contained in an amount of from 0.1 to 1.5% by weight of the whole of the epoxy resin composition: (A) an epoxy resin; (B) a phenol resin; (C) an inorganic filler; (D) a compound represented by the following formula (1) in which R1 represents a hydroxyl group or an alkoxy group, R2 represents a hydrogen atom or a monovalent hydrocarbon group, and n is an integer of from 1 to 7; and (E) a release agent including at least one of the following (α) and (β): (α) a linear saturated carboxylic acid having a number average molecular weight of from 550 to 800, and (β) an oxidized polyethylene wax:R1CH2—CH2—OnR2  (1)

A polycarbonate resin composition which has excellent low-temperature impact resistance and flowability high enough to enable thin molding and provides a coated molded article having a good appearance and high impact resistance. The resin composition comprises 100 parts by weight of a resin component including a polycarbonate resin (component A) and a polycarbonate-polydiorganosiloxane copolymer resin (component B) and 0.5 to 2.5 parts by weight of a polyolefin resin (component C).

Toner for electrostatic development in accordance with one aspect of the present invention contains toner base particles produced by subjecting a toner composition containing binder resin, a coloring agent, and wax to melting and kneading and thereafter pulverization and classification, the toner having a volume median particle diameter (D50) of 5.5 to 7.5 μm, and the toner having particle size distribution in which the toner base particles include 15 to 55% by number of toner base particles of not more than 5 μm in particle diameter, and include not more than 1.5% by number of toner particles of more than 10 μm in particle diameter.