3m Innovative Properties Company

Solventum Intellectual Properties Company

3m Innovative Properties

Jr East Consultants Company

Mitsuaki Kobayashi

Takaaki Shirai

Yukihisa Okada

Hiroshi Ayukawa

Hideyuki Okada

Kazuhiko Minami

Hidetoshi Abe

Bert T Chien

Yoshinori Araki

Toshihiro Suwa

Stephen A Ezzell

Kazumi Matsumoto

Fumio Kurosaki

A filter includes a porous molding, the porous molding being a sintered product of mixed powder containing dry gel powder including an ion exchange resin and thermoplastic resin powder, or a swelled body of the sintered product. When water having an electric resistivity value of 18 MΩ·cm or more is allowed to pass through a space velocity of 1200 hr−1, the electric resistivity value of water after passage is 15 MΩ·cm or more. To provide a filter that can efficiently remove metal ions in a solution to be treated, and easily acquire a solution having an extremely low content of metal ions.

Filter and metal ion removing method

To provide a filter capable of efficiently removing metal ions in a treatment liquid, and capable of easily obtaining a solution having an extremely low metal ion content. A depth filter includes a porous molded article. The porous molded article is a sintered material of mixed powder or a swollen material of the sintered material. The mixed powder contains dried gel powder and thermoplastic resin powder. The dried gel powder contains an ion exchange resin including a sulfonic acid group, and a nitrogen-containing chelating resin.

Filter and metal ion removal device

A filter includes a porous molding, the porous molding being a sintered product of mixed powder containing dry gel powder including an ion exchange resin and thermoplastic resin powder, or a swelled body of the sintered product. When water having an electric resistivity value of 18 M&#x3a9;&#xb7;cm or more is allowed to pass through a space velocity of 1200 hr&#x2212;1, the electric resistivity value of water after passage is 15 M&#x3a9;&#xb7;cm or more. To provide a filter that can efficiently remove metal ions in a solution to be treated, and easily acquire a solution having an extremely low content of metal ions.

Filter, metal ion removing method, and metal ion removing apparatus

To provide a porous molding that can be used as a molding that has sufficient strength to be self-supportable even when the dimensions change due to absorbing water and that can be suitably used as a filter for removing impurities in a liquid or gas. A porous molding is achieved by sintering a mixed powder including a dried gel powder and a thermoplastic resin powder, wherein the ratio of average particle diameter dof the thermoplastic resin powder to the average particle diameter dof the dried gel powder d/dis 1.3 or greater, and the difference ratio of average particle diameter dof the thermoplastic resin powder to the average particle diameter dof the dried gel powder and the average particle diameter dof the dried gel powder when absorbing water and swelling is (d&#x2212;d)/dis 4.0 or less.

Porous molding, gel molding and filter

A facility management system has a facility GIS database configured with electronic map data and facility management GIS data containing data for identifying a location and a form of a facility located along a railway or a road, a facility register database configured to manage a name of a rail or a road, a kilometer post and attribute information in association with one another, and a kilometer post information management section configured to manage coordinate data of the facility on the general map and the kilometer post in association with each other. When searching for attribute information from the facility register database, the kilometer post information management section is referred to obtain kilometer post information by using the coordinate data of the facility and the attribute information of the facility is searched from the facility register database by using the kilometer post information.

Facility management system using geographic information system

To provide a coating composition of a soluble aromatic polyimide having good heat resistance and mechanical strength. As a soluble polyimide, a compound of the formula (I) in which R's represent independently from one another H, halogen, an alkyl group or an alkoxy group, or a substituted or unsubstituted phenyl group; A is a tetravalent aromatic group or a group of the formula (II) in which B is a covalent bond, a &#x3e;C(R)group, a carbonyl group, O, S, a &#x3e;SO, group, a &#x3e;Si(CH)group, a &#x3e;Si(CH)group, a &#x3e;NRgroup or a bifunctional ether group in which Ris a hydrogen atom or &#x2014;C(R), Ris H, an alkyl group or an aryl group, and Ris H, F or Cl; Ar is an aromatic nucleus or a group of the formula (III) in which Ar and B are the same as defined above, and each p is an integer of 0 to 10; m is an integer of 1 to 10 is used. The polyimide has a weight average molecular weight of 150,000 to 1,000,000.

Polyimide-containing coating composition and film formed from the same

To provide an insulating material that has low dielectric constant and low dielectric loss tangent, and is superior in its processability into thin film. An insulating material for use in high-frequency electronic parts comprising: a matrix component composed at polyimide, and fluorocarbon resin particles uniformly dispersed therein.

Insulation material for use in high-frequency electronic parts

The present invention provides an electroluminescent device comprising a transparent conductive layer, a binder layer placed on the back surface of the transparent conductive layer, a luminescent-particle layer comprising a substantially single layer of particles containing luminescent particles, which layer is applied on the back surface of the transparent conductive layer through the binder layer, an insulating layer comprising insulating particles, which is placed on the back surface of the luminescent-particle layer, and a rear electrode placed on the back surface of the insulating layer, in which the luminescent particles are embedded in the binder layer, or the luminescent particles are substantially not embedded in the insulating layer.

Electroluminescent device and method for producing same

Object: to provide a porous polyimide whose dielectric constant and refractive index are lowered while maintaining intrinsic performances of a polyimide, such as heat resistance, etc., and which is highly transparent. Means for solving: a porous polyimide comprising a polyimide containing matrix, and a plurality of micropores dispersed in said matrix, characterized in that said micropores are formed by removing a hydrophilic polymer from a precursor comprising a polyimide-containing matrix, and the hydrophilic polymer dispersed in said matrix, and that the porous polyimide has light transmittance of no less than 70%.

Method of producing porous calcined polyimide

A thermally cured polyimide is provided, and in particular a crosslinked polyimide, comprising a fluorenyl diamine and comprising an aromatic ring having at least one C1-C10 branched or unbranched alkyl substituent, where the alkyl substituent includes a benzylic hydrogen. The present invention provides a crosslinked polyimide made by a process comprising the step of crosslinking a polyimide comprising diamines comprising pendent fluorenyl groups and comprising aromatic rings having at least one C1-C10 branched or unbranched alkyl substituent, the alkyl substituent including a benzylic hydrogen, by raising the temperature of said polyimide above its glass transition temperature.

Growing community of inventors

Tokyo, Japan

Mitsuaki Kobayashi