摘要:
As for a pyrogenically produced silica-titania mixed oxide particle, titanium content is 50 wt % or more, a BET specific surface area is 100 m2/g or less. When these particles are observed using an electron microscope, a ratio of a silica single particle and a titania single particle is controlled to 10% or less, and preferably 5% or less. The silica-titania mixed oxide particle has high composting ratio of silica and titania, and excellent dispersibility and environmental stability. Further, when the particle is used as an external additive for an electrophotographic toner, the particle has sufficient durability and transferability, so that an excellent image characteristic can be obtained.
摘要:
A surface modified inorganic oxide powder is provided, which includes inorganic oxide particles having a surface modified with a mixed solution, which includes an organopoly-siloxane and a silane compound, in the presence of an acid or a base.
摘要:
A surface modified fine silica powder which has been treated, preferably, with a treating agent containing an amino group, characterized in that the powder exhibits an adsorption amount for an anion source compound of 150% or more of that of an original powder which has not been treated; and a printing material using the silica powder. The surface modified fine silica powder can provide an excellent printed matter being free from blotting with ink or a cracking of coating film.
摘要:
A thermoplastic resin composition obtained by mixing 100 parts by weight of at least one thermoplastic resin (A) with 0.1 to 4 parts by weight of (B) a polyfunctional compound having three or more functional groups in which at least one of the terminal structures having the functional groups is a structure represented by formula (1): where R is an alkylene group with 1-15 carbon atoms; n is an integer of 1 to 10; and X is at least one functional group selected from the group consisting of hydroxyl group, aldehyde group, carboxyl group, sulfo group, amino group, isocyanate group, carbodiimide group, oxazoline group, oxazine group, amide group, silanol group and silyl ether group.
摘要:
A resin composition comprising a polylactic acid-based resin (A) and methacrylic resins (B), wherein the methacrylic resins having at least (a) a difference of 10° C. or more in glass transition temperature or (b) a difference of 3% or more in syndiotacticity; it is preferred that at least one of the methacrylic resins (B) is a methacrylic resin having a weight average molecular weight of 50,000 to 450,000, a glass transition temperature of 110° C. or higher and a syndiotacticity of 40% or more, and that the resin composition further contains a multilayer structure polymer formed as particles each consisting of a core layer and one or more shell layers covering it (C). A molded article made of said resin composition.
摘要:
Provided by the present invention is a surface-modified silica powder, characterized in that the said powder is obtained by surface treatment of a silica powder with one or two or more of a compound (A) and with an aminosilane (B), wherein the fixing rate of the compound (A) and the aminosilane (B) is a total of 50% or more, the hydrophobic rate is 80% or more, and the triboelectrostatic charge amount is 200 μC/g or less in its absolute value. The surface-modified silica powder of the present invention can stabilize many properties including fluidity and electrostatic properties while can significantly reduce problems such as fogging and decrease in image quality without significantly deteriorating characteristics of a developing agent and so forth when this is used as an external additive.
摘要:
[Problem to be Solved]: To provide a surface modified inorganic oxide powder having a reduced amount of residual volatile components. [Solution]: The surface modified inorganic oxide powder is obtained by the surface treatment of an inorganic oxide powder with the use of a treating solution of long-chain alkylsilane and catalysts in a solvent or by the heat treatment of the inorganic oxide powder between the volatilization temperature of the organic volatile components and the decomposition temperature of the treating agents after the surface modification, to reduce the amount of the volatile components to less than 30 ppm, preferably less than 10 ppm. And this surface modified inorganic oxide powder is suited in use as the additive for powder coating materials, toners for electrophotography or the like; the viscosity modifier for the resin of an adhesive, a coating material or the like; the reinforcing filler for natural rubber, synthetic rubbers, engineering plastics or the like; the anti-block agent for films of polyethylene, polyester or the like; and the adhesive and sealant for various resins.
摘要:
A suspension spring and a double-rod damper are installed in the interior of a front fork which comprises a body-side tube and a wheel-side tube. The double-rod damper comprises a piston housed in a cylinder, and an upper rod and a lower rod connected to the piston. The upper rod is formed to have a smaller diameter than the lower rod. By providing an orifice which allows working oil in an upper oil chamber formed around the upper rod to flow into a reservoir while causing the pressure in the upper oil chamber to increase, expansion and contraction of air bubbles mixed into working oil in the cylinder is prevented, thereby improving the response of a damping force generated in the front fork.
摘要:
A thermoplastic resin composition obtained by mixing 100 parts by weight of at least one thermoplastic resin (A) with 0.1 to 4 parts by weight of (B) a polyfunctional compound having three or more functional groups in which at least one of the terminal structures haying the functional groups is a structure represented by formula (1): where R is an alkylene group with 1-15 carbon atoms; n is an integer of 1 to 10; and X is at least one functional group selected from the group consisting of hydroxyl group, aldehyde group, carboxyl group, sulfo group, amino group, isocyanate group, carbodiimide group, oxazoline group, oxazine group, amide group, silanol group and silyl ether group.