Zeon Corporation

Hitachi, Ltd.

Intel Corporation

Takashi Iga

Takeshi Hirata

Nozomi Yabuki

Kazuhiro Sato

Kenichi Natsui

Kojiro Masuo

Akihiro Tanabe

Takeru Chiba

Junji Kodemura

Masumi Umezawa

Isao Hashimoto

Tadashi Sato

Noriyuki Sakudo

Satoshi Ichimura

Hisashi Kurokawa

Makoto Fujimura

Kentaro Hayasaka

Tomoya Taniyama

Yasunori Ohno

Keita Sensui

Takashi Shirone

Kojiro Akazaki

Yohei Tateishi

Junichi Takashima

Masatoshi Ishiba

Kouji Tobinaga

Yoshito Uwano

Yuuki Hayashi

Kazunori Tsubuku

Kaoru Endou

The method for producing hollow resin particles includes: carrying out a suspension treatment of a mixture liquid including a polymerizable monomer including a non-crosslinkable monomer and a crosslinkable monomer, a hydrocarbon solvent and an aqueous medium to prepare a suspension, carrying out a polymerization reaction of the suspension to form precursor particles having a hollow portion and including the hydrocarbon solvent in the hollow portion, and removing the hydrocarbon solvent included in the precursor particles to produce hollow resin particles. A content of the crosslinkable monomer is from 35 parts by mass to 95 parts by mass when the total mass of the polymerizable monomer is regarded as 100 parts by mass; a solubility parameter (SP value) of the polymerizable monomer is from 8.70 to 9.42; and a difference between the SP value of the polymerizable monomer and a SP value of the hydrocarbon solvent is 0.60 or more.

Method for producing hollow resin particles

Provided is a resin composition configured to show a small change in the void ratio of hollow resin particles during mold processing and configured to stably mold a lightweight molded product having a small variation in specific gravity. The resin composition is a resin composition comprising 50 parts by mass to 95 parts by mass of a thermoplastic elastomer and 5 parts by mass to 50 parts by mass of hollow resin particles, wherein the hollow resin particles have a void ratio of from 50% to 85%; wherein the hollow resin particles have a shell containing a resin; and wherein, with respect to 100 parts by mass of repeating units constituting the resin, 30 parts by mass to 100 parts by mass of a crosslinkable monomer unit and 0 part by mass to 70 parts by mass of a non-crosslinkable monomer unit are contained as a polymerizable monomer unit.

Resin composition and molded product thereof

Provided is a resin composition configured to show a small change in the void ratio of hollow resin particles during mold processing and configured to stably mold a lightweight molded product. The resin composition is a resin composition comprising 50 parts by mass to 95 parts by mass of a thermoplastic plastomer and 5 parts by mass to 50 parts by mass of hollow resin particles, wherein the hollow resin particles have a void ratio of from 50% to 85%; wherein the hollow resin particles have a shell containing a resin; and wherein, with respect to 100 parts by mass of repeating units constituting the resin, 30 parts by mass to 100 parts by mass of a crosslinkable monomer unit and 0 part by mass to 70 parts by mass of a non-crosslinkable monomer unit are contained as a polymerizable monomer unit.

Resin composition comprising thermoplastic plastomer and hollow resin particles and molded product thereof

The present invention provides a method for producing a toner for electrostatic-image development comprising: a dispersing step of performing a dispersing treatment in which a cavitation effect is obtained on a color resin particle containing a binder resin, a colorant, a charge control agent, and a release agent in an aqueous dispersion medium so as to obtain a dispersion of the color resin particle; and a heating step of performing a heat treatment on the dispersion of the color resin particle at a temperature of equal to or more than a glass transition temperature of the color resin particle and 95° C. or less for a heating time of 5 minutes or more and 10 hours or less.

Method for manufacturing toner for electrostatic charge image development

Provided is hollow resin particles having higher compressive strength and more excellent heat insulating properties and heat resistance than before. The hollow resin particles each having one or two or more hollow portions, wherein a number average particle diameter is from 0.1 μm to 9.0 μm, a void ratio is from 70% to 99%, and an amount of the volatile organic compound contained is 5% by mass or less.

Hollow resin particles and sheet

A polymer latex including a polymer and at least one polysaccharide selected from the group consisting of tamarind gum, xanthan gum, cationized xanthan gum, gellan gum, guar gum and cationized guar gum.

Polymer latex and layered product

Provided is a method for producing a latex comprising hollow resin particles each with a high void ratio and a method for producing hollow resin particles each with a higher void ratio. In the method for producing the latex: a suspension treatment of the mixture liquid which comprises a monomer, a crosslinkable monomer, an oil-soluble polymerization initiator, a fat/fatty oil, a hydrocarbon solvent, a suspension stabilizer and an aqueous medium is carried out to prepare a suspension comprising monomer drops; a polymerization reaction of the suspension is carried out to prepare a precursor composition which comprises precursor particles each having a hollow portion including the hydrocarbon solvent.

Method for producing latex and method for producing hollow resin particles

A foam containing a nitrile group-containing conjugated diene copolymer and a urethane polymer, wherein relative to 100 wt % of the sum of the nitrile group-containing conjugated diene copolymer and the urethane polymer, the nitrile group-containing conjugated diene copolymer is present in an amount of less than 90 wt % and the urethane polymer is present in an amount of more than 10 wt %, the nitrile group-containing conjugated diene copolymer contains ethylenically unsaturated nitrile monomer units in an amount of more than 31 wt %, the foam has a density of 0.08 to 0.30 g/cm, and in observation of an arbitrary cross section of the foam, air bubble cross sections present in the cross section have an average diameter of 350 &#x3bc;m or less, and the number of air bubble cross sections with a diameter of 0.6 mm or more present in the cross section is 0.062 per mmor less.

Foam

A latex composition containing a conjugated diene polymer latex and a medium-chain fatty acid glyceride, wherein a content proportion of the medium-chain fatty acid glyceride is 1 to 40 parts by weight with respect to 100 parts by weight of the conjugated diene polymer. In the present invention, a medium-chain fatty acid forming the medium-chain fatty acid glyceride is preferably a fatty acid having 6 to 18 carbon atoms. In the present invention, the medium-chain fatty acid glyceride is preferably a medium-chain fatty acid triglyceride. The latex composition preferably further contains a crosslinking agent.

Latex composition

The present invention enables the manufacture of a small-sized high-density multi-layer printed circuit board. The manufacturing method for a multi-layer printed circuit board, according to the present invention, comprises: a step in which an electrical insulation layer is formed by heating a laminate comprising a substrate, a heat-curable resin composition layer provided on the substrate, and a release substrate provided on the heat-curable resin composition layer, thereby curing the heat-curable resin composition layer, and a step in which a via hole is formed in the electrical insulation layer by irradiating a laser from above the release substrate. In addition, in the present invention, the release substrate has a thickness of at least 80 &#x3bc;m and is formed using a material having a glass transition temperature, the heat-curable resin composition layer has a volatile component-content of 7.0 mass % or less and a thickness of 25 &#x3bc;m or less, and the curing of the heat-curable resin composition layer occurs at a temperature that is not less than the glass transition temperature of the material of the release substrate.

Manufacturing method for multi-layer printed circuit board

A prepreg with a first resin layer and a second resin layer which is formed on this first resin layer, wherein the first resin layer is formed by a first resin composition, the second resin layer includes a resin layer which is formed by a second resin composition which is different from the first resin composition and in which a fiber base material is contained, the second resin layer is provided with a fiber base material-containing layer, an A layer which is positioned at an opposite side of the first resin layer side of the fiber base material-containing layer and does not contain fiber base material, and a B layer which is positioned at the first resin layer side of the fiber base material-containing layer and which does not contain the fiber base material, and said B layer has a thickness smaller than the thickness of the first resin layer.

Prepreg and laminate including prepreg

A method of production of a multilayer circuit board comprising using a curable composition which contains a heat curable resin and curing agent (I) to form an uncured or semicured resin layer on a board (step A), then bringing a curing agent (II) able to substantially to cure the heat curable resin at a temperature at which the curing agent (I) cannot substantially cure the heat curable resin into contact with the surface of the resin layer, then heating the resin layer at a temperature at which the curing agent (I) cannot substantially cure the heat curable resin and the curing agent (II) can substantially cure the heat curable resin (step B), next heating and curing the resin layer at a temperature at which the curing agent (I) can substantially cure the heat curable resin to form an electrical insulating layer (step C).

Method of production of multilayer circuit board

Provided are a charged particle beam generation apparatus, a charged particle beam irradiation apparatus, a particle beam therapy system, and a charged particle beam generation apparatus operating method capable of implementing injection of a charged particle beam into a circular accelerator at an arbitrary timing by setting a normal operation period of a linear accelerator to be larger than a shortest period and securing a stability of the beam. In timing control of controlling injecting, accelerating, emitting, and decelerating processes of a synchrotron (), after an end of the emitting process, a linear accelerator () is allowed to stop repetition of an operation based on an after-end-of-emitting-process timing signal to be in a stand-by state and is allowed to be start the repetition of the operation in a constant period based on a master signal.

Charged particle beam generator, charged particle irradiation system, method for operating charged particle beam generator and method for operating charged particle irradiation system

A production process of a toner, wherein wet colored resin particles are poured into a rotary vane type agitating device having a structure that an agitating vane fixed to a rotating drive shaft extending through a bottom wall of an agitation vessel is arranged at a bottom of the agitation vessel, and at least one gas inlet port and at least one gas outlet port are arranged at a lower portion of the agitation vessel and an upper portion of the agitation vessel, respectively, the wet colored resin particles are dried by a method, in which the wet colored resin particles are agitated by the rotary vane within the agitation vessel while supplying a heated gas, thereby forming a fluidized bed, and a mixed gas containing water is discharged from the gas outlet port to the outside, and at that time, drying conditions are controlled in such a manner that the temperature of the gas discharged falls within a range from 20 to 60&#xb0; C.

Production process of toner

Provided is a toner for developing electrostatic image which is excellent in shelf stability, and is further excellent in low-temperature fixability so as to be capable of maintaining a high fixing rate even at a low fixing temperature. A toner for developing electrostatic image is used which comprises colored resin particles containing a binder resin, a colorant, and a parting agent, wherein the parting agent is an aliphatic hydrocarbon polymer obtained by polymerizing an aliphatic hydrocarbon monomer.

Growing community of inventors

Tokyo, Japan

Takashi Iga