Mitsubishi Rayon Company, Limited

Kei Murase

Teruyuki Yamada

Hiroyuki Fujiki

Katsuhiko Shinada

Masahiko Mizuta

Yuuichi Shirasu

Takashi Akita

Toshinori Sumi

Haruko Miyauchi

Atsushi Takahashi

Fujio Yu

Jun Kamo

Fumiaki Watanabe

Seiji Hayashi

Teruta Ishimaru

Takayuki Makino

Yuichi Fukui

Yasuo Hiromoto

Masaki Kurashina

Osamu Maehara

Chiho Itou

Masashi Teramachi

Toshitaka Uragaki

Masakazu Minagawa

Nobuko Oogami

Tadanobu Ikeda

Wataru Fujii

Akira Hajikano

Chiho Ito

Takeharu Morishita

A hollow porous membrane with a reduced cost and excellent separation characteristic, water permeability, and mechanical strength and a process of producing the hollow porous membrane with an excellent adhesive property between a support and a porous membrane layer at a low cost are provided. The hollow porous membrane includes a porous membrane layer in which dense layers are disposed in the vicinities of an outer surface and an inner surface. In the process of producing the hollow porous membrane, membrane-forming dopes of a first membrane-forming dope and a second membrane-forming dope, which contain the material of the porous membrane layer and a solvent, are successively applied and stacked onto the outer circumferential surface of a hollow support and the applied membrane-forming dopes are simultaneously coagulated. In the process of producing the hollow porous membrane, a porous membrane layer is formed by applying a membrane-forming dope containing a material of the porous membrane layer and a solvent to the outer circumferential surface of the hollow support and coagulating the applied dope, and a hollow braid obtained by circularly knitting a yarn formed of multi-filaments is used as the support.

Hollow porous membrane and process for producing the same

An object of the present invention is to provide a composite porous membrane, which has not only excellent filtration capacity, but also excellent adhesion between a porous membrane and a braid and mechanical properties, and a method for producing the composite porous membrane. The present invention relates to a composite porous membrane comprising a braid, and a membrane material; wherein the membrane material comprises a first porous layer comprising a dense layer which is arranged on the outer surface of the braid, and a second porous layer comprising a dense layer which is arranged on the first porous layer, and a method for producing the composite porous membrane.

Composite porous membrane and method for producing the same

A microarray obtainable by slicing a block comprising a plurality of linear bodies or through-holes which carry an organism-related substance, in a direction intersecting the longitudinal direction of the linear bodies or through-holes, wherein the linear body and/or block comprise a substance that reduces the self-fluorescence thereof.

Method for producing a microarray

By the present invention, there is provided a fiber having nucleic acid immobilized thereon, an alignment of fibers having nucleic acid immobilized thereon, and a slice thereof.

Carriers having biological substance

The present invention relates to a polysufone porous membrane having a high water flux, an excellent resistance to moist heat and an excellent repercolation characteristic, and which comprises a mixed polymer having polyarylsulfone and polyethersulfone at a ratio of from 9/1-1/9 (by weight), the membrane being a graded porous membrane forming a cross-linked polymer network wherein a number of micropores being interconnected from one surface to the other surface, and the membrane comprising two layers wherein one layer being a dense layer having a number of pores with pore sizes in the range of 0.01-1 &mgr;m and thereby having a separation function, and the other layer being a graded type supporting layer supporting said dense layer and having a pore size distribution wherein the pores existing therein and having sizes of 1-100 &mgr;m increase continuously from the dense layer side toward the other surface side, wherein the separation particle size is not larger than 0.5 &mgr;m, and a method of manufacturing the same.

Polysulfone porous membrane and a method of manufacturing the same

Cellulose solution for shaping and method of shaping the same

Growing community of inventors

Toyohashi, Japan

Kei Murase