Sumitomo Chemical Company, Limited

Yasuo Shinohara

Yasunori Nishida

Hirohiko Hasegawa

Kohji Yamatsuta

Hiroyuki Sato

Hitoshi Murotani

Tsutomu Takahashi

Daizaburo Yashiki

Tsuyoshi Nakano

Koichiro Watanabe

Akiko Nakazono

Yoshifumi Tsujimoto

Yoshifumi Nakano

Provided is a laminated porous film suitable as a non-aqueous electrolyte secondary battery separator, which includes a heat resistant layer excellent in morphological stability at a high temperature and ion permeability and more resistant to fall-off of a filler. A laminated porous film in which a heat resistant layer including a binder resin and a filler and a base porous film including a polyolefin as a principal component are laminated, wherein the filler included in the heat resistant layer substantially consists of an inorganic filler (a) having a primary particle diameter of 0.2 to 1 &#x3bc;m and an inorganic filler (b) having a primary particle diameter of 0.01 to 0.1 &#x3bc;m, and the particle diameter of secondary aggregates of the inorganic filler (b) is not more than 2 times the primary particle diameter of the inorganic filler (a) in the heat resistant layer.

Laminated porous film, method for producing same, non-aqueous electrolyte secondary battery separator, laminated electrode sheet, and non-aqueous electrolyte secondary battery

A porous film which is produced using a resin composition containing an ultra-high-molecular-weight polyolefin and a polyolefin wax having a weight average molecular weight of 3000 or less, in which the number of branches per 1000 carbon atoms that constitute the main chain of the polyolefin wax is 15 or less; a porous film which is produced using a resin composition containing an ultra-high-molecular-weight polyolefin and a polyolefin wax having a weight average molecular weight of 3000 or less, and which does not substantially contain a component that melts at a temperature of 60&#xb0; C. or lower; a laminated porous film which comprises one of the porous films and a heat-resistance porous layer laminated on at least one surface of the porous film; and a separator for batteries, which comprises the porous film or the laminated porous film.

Porous film, battery separator, and battery

Provided is a porous film comprising a heat-resistant resin and two or more fillers, wherein a value of D/Dis 0.15 or less where among values each obtained by measuring the average particle diameter of particles that constitute one of the two or more fillers, the largest value is let be Dand the second largest value is let be D.

Porous film

Provided is a separator made of a laminated porous film in which a heat-resistant layer that comprises a heat-resistant resin and a shut-down layer that comprises a thermoplastic resin are laminated, wherein the heat-resistant layer further comprises two or more fillers, and the value of D/Dis 0.15 or less where among values each obtained by measuring the average particle diameter of particles that constitute one of the two or more fillers, the largest value is let be Dand the second largest value is let be D.

Separator

There is provided a coating method for forming a coat having a less unevenness in its thickness on a sheet-like substrate. In the method in which a coating liquid is continuously supplied from a supply head to a surface of a continuously traveling sheet-like substrate to form a coat while controlling its thickness by a coating bar disposed above the sheet-like substrate, the coating liquid of which amount corresponds to an amount required for forming a predetermined coat thickness is continuously and constantly supplied to the surface of the sheet-like substrate, and the coating bar is moved up and down on the basis of increase and decrease in an amount of a holdup of the coating liquid which is formed just near the coating bar, so that the coat is formed.

Coating method and coating apparatus

Provided is a porous para-oriented aromatic polyamide film which contains fine particles composed of a heat-resistant resin in an amount of 10 to 400 parts by weight based on 100 parts by weight of a pare-oriented aromatic polyamide and has a linear thermal expansion coefficient at 200 to 300&deg; C. of from &minus;50&times;10 /&deg; C. to &plus;50&times;10 /&deg; C. The porous para-oriented aromatic polyamide film shows excellent tear propagation resistance and has light weight and low linear thermal expansion coefficient, and is suitable as a prepreg material used for a base substrate for printed circuit board.

Porous para-oriented aromatic polyamide film, prepreg thereof, and base substrate for printed circuit board

A non-aqueous electrolyte battery separator comprising a heat-resistant nitrogen-containing aromatic polymer and a ceramic powder.

Non-aqueous electrolyte battery separator

A drive shaft made of fiber-reinforced plastics comprising a pipe made of fiber-reinforced plastics to which a fitting is connected, in which a connecting portion of the pipe and a connecting portion of the fitting engage each other through bite of serrations formed on the inner or outer surface of the connecting portion of the fitting into the connecting portion of the pipe, with the space between the pipe and the fitting at the biting sites being filled with an adhesive.

Drive shaft made of fiber reinforced plastics, and method for connecting

A drive shaft made of fiber reinforced plastic includes pipe made of fiber reinforced plastic to which a fitting is connected. A connecting portion of the fiber-reinforced resin-made pipe and a connecting portion of the fitting engage each other through the bite of serrations formed on the outer side or inner side of the fitting, with a film, e.g., a metallic foil, being interposed therebetween.

Growing community of inventors

Tsuchiura, Japan

Yasuo Shinohara