Sumitomo Electric Fine Polymer, Inc.

Sumitomo Electric Industries, Limited

Jnc Corporation

Other

Sunstar Engineering Pte. Ltd.

Takeshi Nagasaki

Atsushi Uno

Fumihiro Hayashi

Aya Murata

Hiroyuki Tsujiwaki

Seiji Shinkai

Yoshimasa Suzuki

Yasuhiko Muroya

Takamasa Hashimoto

Akira Nishimura

Shin-ichiro Niwa

Akira Harada

Shinichi Kanazawa

Toshihiko Kishimoto

Shousuke Yamanouchi

Shigetoshi Ikeda

Toshiaki Yagi

Mamoru Nishida

Hajime Funatsu

Akira Udagawa

Aya Oya

A hollow-fiber membrane module according to an embodiment of the present disclosure includes a rectangular tubular outer casing with at least one sidewall being open, the outer casing having a plurality of open ports, and an inner casing configured such that a plurality of hollow-fiber membranes aligned in a longitudinal direction of the outer casing are placeable in the inner casing and configured to be insertable into the one sidewall.

Hollow-fiber membrane module

A hollow-fiber membrane according to an aspect of the present disclosure contains a polytetrafluoroethylene or a modified polytetrafluoroethylene as a main component and has an average outer diameter of 1 mm or less and an average inner diameter of 0.5 mm or less. In a measurement of a heat of fusion of the polytetrafluoroethylene or the modified polytetrafluoroethylene with a differential scanning calorimeter, when the polytetrafluoroethylene or modified polytetrafluoroethylene is subjected to a first step of heating from room temperature to 365&#xb0; C., a second step of cooling from 365&#xb0; C. to 350&#xb0; C., maintaining the temperature, subsequently cooling from 350&#xb0; C. to 330&#xb0; C., and further cooling from 330&#xb0; C. to 305&#xb0; C., and a third step of cooling from 305&#xb0; C. to 245&#xb0; C. at a rate of &#x2212;50&#xb0; C./min and subsequently heating from 245&#xb0; C. to 365&#xb0; C. at a rate of 10&#xb0; C./min, a heat of fusion from 296&#xb0; C. to 343&#xb0; C. in the third step is 30.0 J/g or more and 45.0 J/g or less.

Hollow-fiber membrane and hollow-fiber membrane module

The present invention provides a hot-melt adhesive having a sufficiently long usable time and exhibiting good strength and good heat resistance. The present invention relates to a hot-melt adhesive composition comprising a hydrocarbon cyclic polymer (A), an &#x3b1;-olefin polymer (C), and a tackifying resin (D).

Adhesive composition

A porous filter includes a porous laminate in which a plurality of biaxially stretched porous sheets made of PTFE are stacked. The Gurley number G and the bubble point B (kPa) of the porous laminate satisfy the following expressions (1) and (2):log&#x3e;3.7&#xd7;10&#x2212;0.8&#x2003;&#x2003;(1)log&#x3c;4.9&#xd7;10+0.45&#x2003;&#x2003;(2).

Porous filter

A low-cost cell culture device with low cytotoxicity and improved cell adhesion is described, manufactured by a simplified coating process. At least the portion for cell culture on the surface of the cell culture device is coated with at least one of &#x3b5;-poly-L-lysine, further polymerized derivatives of &#x3b5;-poly-L-lysine and their salts.

Cell culture device and manufacturing method therof

A porous polytetrafluoroethylene film comprising a fluororesin containing polytetrafluoroethylene as a main component, wherein an envelope surface area of resin fibers included per film having an area of 1 mand a thickness of 25 &#x3bc;m is 4,000 mor more, and a melting point peak is 333&#xb0; C. or lower.

Porous polytetrafluoroethylene film and method for producing same

A porous polytetrafluoroethylene composite includes a porous polytetrafluoroethylene film, a porous support layer that supports the porous polytetrafluoroethylene film, an adhesive layer bonded to the porous polytetrafluoroethylene film, and a porous reinforcement layer bonded to the adhesive layer, in which the adhesive layer is a layer composed of a fluororesin having a melting point, or a glass transition point when a melting point is not clearly defined, of lower than 260&#xb0; C.

Porous polytetrafluoroethylene composite and method for producing the same

Provided is a method for producing a porous polytetrafluoroethylene film having good chemical resistance, good heat resistance, a high porosity, and good dimensional stability. The method for producing a porous polytetrafluoroethylene film includes a stretching step of stretching a sheet-like molded body composed of a fluororesin containing polytetrafluoroethylene as a main component in a longitudinal direction and/or a lateral direction at a temperature lower than a melting point of the fluororesin to make a porous fluororesin film, and, after the stretching step, an annealing step of holding the porous fluororesin film in a shape-fixed state, and maintaining the porous fluororesin film at a temperature lower than the melting point of the fluororesin but not lower than a temperature 30&#xb0; C. lower than the melting point for 1 to 20 hours.

Method for producing porous polytetrafluoroethylene film and porous polytetrafluoroethylene film

The invention offers a microporous modified-polytetrafluoroethylene membrane that is a microporous membrane having a significantly small pore diameter and narrow pore-diameter distribution and that can remove microscopic foreign particles at high efficiency when used as a filtration membrane. A microporous modified-polytetrafluoroethylene membrane that is a microporous membrane produced by the steps of producing a copolymer of hexafluoropropylene or perfluoroalkyl ether and tetrafluoroethylene having the number of moles not less than 50 times that of the hexafluoropropylene or perfluoroalkyl ether, forming the copolymer into the shape of a membrane, heating the membrane to the melting point of the copolymer or above to bake the copolymer, cooling the obtained baked product, and stretching the baked product and that has a mean flow pore diameter of 30 nm or less; a porous-modified-polytetrafluoroethylene-membrane composite that incorporates the microporous membrane and a production process of the composite; and a separation membrane element incorporating the porous-modified-polytetrafluoroethylene-membrane composite.

Microporous modified-polytetrafluoroethylene membrane, porous-modified-polytetrafluoroethylene-membrane composite and production process thereof, and separation membrane element

A nucleic acid is effectively introduced into a cell while suppressing the cytotoxicity by administering a nucleic acid complex comprising a high molecular weight derivative of &#x3b5;-poly-L-lysine and a nucleic acid to a cell.

Nucleic acid complex and method of introducing nucleic acid into cell using the same

A tetrafluoroethylene resin molded article obtained by fusing PTFE by heating a tetrafluoroethylene resin by heating, and then executing a gradual cooling or a cooling including a holding at a temperature equal to or higher than 313&#xb0; C. and lower than 321&#xb0; C. for 10 minutes or longer, and having, when heated to 365&#xb0; C., then cooled to 245&#xb0; C. with a rate of &#x2212;1&#xb0; C./min, and then heated to 365&#xb0; C. with a rate of 10&#xb0; C./min, a heat of fusion which, within a range from 296 to 343&#xb0; C., is equal to or larger than 32 J/g and less than 47.8 J/g, a porous article obtained by expanding the molded article, and a composite article, a filter, an impact deformation absorber and a sealing material utilizing the molded article or the porous article.

Non-porous sinter molded article of tetrafluoroethylene resin, expanded tetrafluoroethylene resin molded article, producing methods therefor, composite member, filter, impact deformation absorber and sealing material

Porous material of polytetrafluoroethylene and production process thereof

A method of extracting a particular nucleic acid fragment containing a nucleic acid sequence of interest from a nucleic acid or nucleic acids mixture, comprising the steps of:

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Osaka, Japan

Atsushi Uno