Sumitomo Chemical Company, Limited

Syusaku Hara

Junji Suzuki

Chikae Yoshimaru

Hiroki Hashiwaki

Chikara Murakami

Daizaburo Yashiki

Takashi Hara

Kosuke Kurakane

Ichiro Arise

Takashi Arimura

Masaki Kitahara

An inorganic porous carrier that can be used to increase the purity of nucleic acid in a production thereof, and that comprises a linker of formula (1), wherein a Survival Bone Rate (SBR) value is 5.0% or more. In the formula (1), a bond * represents a linkage of an inorganic porous substance to the oxygen atom of a silanol group; n is an integer of 1 etc.; R represents independently of each other an alkyl group containing 3 to 10 carbon atoms which may have a substituent such as an alkoxy group etc.; and L represents a single bond; an alkylene group of 1 to 20 carbon atoms; or an alkylene group containing 2 to 20 carbon atoms which contains —CH-Q-CH— group wherein any group Q selected from a group consisting of —O— etc. is inserted into at least one of —CH—CH— group constituting the alkylene group.

Inorganic porous support and method for producing nucleic acid using same

The present invention provides a nonaqueous electrolyte secondary battery insulating porous layer having an excellent withstand voltage property and an excellent leakage resistance characteristic. The nonaqueous electrolyte secondary battery insulating porous layer having a trabecular structure including voids, which trabecular structure has an anisotropy value of 1.30 to 2.10, the anisotropy value being calculated from a three-dimensional image showing a void part and a solid content part on respective two gradation levels, the three-dimensional image being prepared by analyzing images of cross sections obtained by making observation at intervals of 20 nm in a thickness direction from a surface of the nonaqueous electrolyte secondary battery insulating porous layer with use of a FIB-SEM having a magnification of 6500 times.

Nonaqueous elctrolyte secondary battery insulating porous layer

The present invention provides a nonaqueous electrolyte secondary battery insulating porous layer having an excellent charge resistance characteristic. The nonaqueous electrolyte secondary battery insulating porous layer has a fractal dimension of 2.42 to 2.60, the fractal dimension being calculated from a three-dimensional image showing a void part and a porous layer part on respective two gradation levels, the three-dimensional image being prepared by analyzing images of cross sections obtained by making observation at intervals of 20 nm in a thickness direction from a surface of the nonaqueous electrolyte secondary battery insulating porous layer by FIB-SEM measurement at a magnification of 6500 times.

Nonaqueous electrolyte secondary battery insulating porous layer

The present invention provides a nonaqueous electrolyte secondary battery separator which is excellent in cycle characteristic. The nonaqueous electrolyte secondary battery separator includes a polyolefin porous film in which a difference between (i) a porosity calculated from a continuous image which is formed so as to extend from a surface to an inside of the polyolefin porous film in a thickness direction and in which a void part and a resin part are shown at respective two gray levels and (ii) a porosity calculated from a thickness, a weight per unit area, and a real density of the polyolefin porous film is 4% to 20%.

Nonaqueous electrolyte secondary battery separator

In a porous layer of the present invention, in a case where the porous layer is divided into 32 sections, a degree of variability in voidage that is measured in the 32 sections is 16.0% or lower. Each of the 32 sections is a rectangular parallelepiped whose longitudinal length is 2.3 &#x3bc;m, transverse length is 2.3 &#x3bc;m, and thickness is identical with that of the porous layer. The porous layer of the present invention and a separator formed by laminating the porous layer are suitable as a member for a non-aqueous electrolyte secondary battery that has an excellent cycle characteristic.

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Niihama, Japan

Syusaku Hara