摘要:
A method for producing a rubber composition includes kneading: a rubber component comprising a conjugated diene polymer having at least one functional group selected from the group consisting of a thiol group, an oxetane group and a hydrocarbylthio group; silica particles; and a catalyst for condensing silanol to form an aggregate of the silica particles. Preferably, at least one polymer selected from the group consisting of a conjugate diene polymer having no functional group bondable to silica, and a polymer having no functional group bondable to silica and the polymer being other than conjugated diene polymer is also kneaded as a rubber component other than the conjugated diene polymer.
摘要:
A rubber composition that can obtain a rubber elastic body having small rolling resistance and excellent impact resilience and a method for producing the same, and a tire having small rolling resistance and excellent impact resilience are provided. The rubber composition of the present invention is obtained by kneading a conjugated diene polymer having a functional group bondable to silica, an acylate compound containing metal and silica. In the present invention, a polymer having no functional group bondable to silica is preferably kneaded as a rubber component other than the conjugated diene polymer, together with the conjugated diene polymer having a functional group bondable to silica, the acylate compound containing metal and the silica.
摘要:
A rubber composition which can obtain a rubber elastic body having small rolling resistance and excellent impact resilience and a method for producing the same, and a tire having small rolling resistance and excellent impact resilience are provided.The rubber composition of the present invention is obtained by kneading a rubber component comprising a conjugated diene polymer having at least one functional group selected from the group consisting of a tertiary amino group, a thiol group, an epoxy group, a thioepoxy group, an oxetane group and a hydrocarbylthio group, a catalyst for condensing silanol, and silica.
摘要:
The method for producing a modified conjugated diene based (co)polymer, according to the present invention comprises a step of reacting a conjugated diene based (co)polymer with a metal halide compound to obtain a modified conjugated diene based (co)polymer, the conjugated diene based (co)polymer having a weight-average molecular weight of 150,000 to 2,000,000 and being obtained by bonding, to a polymer having at least a conjugated diene unit, an alkoxysilyl group and an optionally protected primary amino group. The method can satisfactorily produce a conjugated diene based (co)polymer which has a high Mooney viscosity, excellent shape stability and good processability.
摘要:
By a method comprising a process including (a) producing a modified conjugated diene polymer through reaction of a conjugated diene polymer having an alkali metal or alkaline-earth metal active terminal with a first alkoxysilane compound which has both an alkoxysilyl group and at least one group convertible into an onium, and (b) mixing the modified conjugated diene polymer, an agent for producing onium, a second alkoxysilane compound having an alkoxysilyl group and at least one group convertible into an onium and a condensation catalyst containing metal element(s) for alkoxysilane compounds, conjugated diene rubber usable as a starting material of cross-linked rubber which is used for a tire tread or the like and allows enhancement of low fuel consumption property can be obtained.
摘要:
There is provided a shake correction apparatus having an image pickup optical system that includes a correction lens capable of moving in a direction orthogonal to an optical axis. The shake correction apparatus comprises: a detection unit that detects shake applied to the shake correction apparatus; a determination unit that determines a reference position of the correction lens; and a drive unit that drives the correction lens with the reference position serving as a center position, so as to correct the shake detected by the detection unit. The determination unit determines the reference position, in a range where a condition that a Modulation Transfer Function (MTF) of the image pickup optical system when the correction lens is positioned at the determined reference position is equal to or larger than a threshold is satisfied.
摘要:
An image forming apparatus includes a toner carrying member for supplying toner to the image bearing member to visualize the latent image; a rotatable toner supply member, contacted to the toner carrying member, for supplying the toner to the toner carrying member, the toner supply member including a surface foam layer; a voltage applying device for applying voltages to the toner carrying member and the toner supply member; a controller for controlling the voltage application apparatus such that A and B have a polarity which is the same as a regular charging polarity of the toner, where A=Vs2−Vd2; B=(Vs2−Vd2)−(Vs1−Vd1); Vd1 is a voltage applied to the toner carrying member during a period in which the latent image is visualized; Vs1 is a voltage applied to the toner supplying member during the period; vd2 is a voltage applied to the toner carrying member during at least a part of a period which is after the visualization of the latent image and before stoppage of rotation of the toner supplying member; and Vs2 is a voltage applied to the toner supplying member during the at least the part of the period.
摘要:
A solid state electrolyte fuel cell stack includes: layered solid state electrolyte fuel cells, each formed by a solid state electrolyte body having a fuel pole in contact with a fuel gas and an air pole in contact with an oxidant gas; and inter-connectors arranged between the solid state electrolyte fuel cells so as to separate a gas flow path between the solid state electrolyte fuel cells and assure electric conduction between the solid state electrolyte fuel cells. The solid state electrolyte fuel cell stack has two or more air vents for supplying a fuel gas or two or more air vents for supplying the oxidant gas which vents penetrate a part or the whole of the fuel cell stack in the stack layering direction. The different air vents communicate with the different solid state electrolyte fuel cells.
摘要:
A process for producing a conjugated diene copolymer rubber which comprises initiating a copolymerization reaction in a reaction system containing a first conjugated diene compound and a first aromatic vinyl compound and completing the reaction, adding a first polyfunctional monomer to the reaction system, optionally further adding a second conjugated diene compound and a second aromatic vinyl compound, and further conducting copolymerization reaction, and adding a modifier to the reaction system to react the modifier with the copolymer. A rubber composition having excellent processability, exhibiting sufficient hardness even after vulcanization, and possessing reduced rolling resistance can be obtained.