公开(公告)号：US4177150A

公开(公告)日：1979-12-04

申请号：US831017

申请日：1977-09-06

Applicant: Akio Inoue ,  Tadahiro Kobayashi ,  Toshio Iwasa

Inventor： Akio Inoue ,  Tadahiro Kobayashi ,  Toshio Iwasa

IPC: B32B5/18 ,  B01D71/40 ,  B01D71/42 ,  B32B5/14 ,  C08J5/18 ,  C08J9/28 ,  C08L33/20 ,  H01M2/14 ,  H01M2/16 ,  H01M10/14 ,  B01D13/04

CPC classification number: B01D71/42 ,  B01D67/0011 ,  B01D69/02 ,  H01M2/145 ,  H01M2/1653 ,  H01M2300/0005

Abstract: Provided is dried porous membrane composed of acrylonitrile polymer walls separating predominantly interconnecting small-size pores. The membrane has surface layers integrated with a support layer to form a single continuous acrylonitrile polymer phase. At least one of the surface layers has pores of from 0.001 to 0.05 micron in average size, and the support layer has pores which are on the average larger than the pores in the surface layer or layers. The membrane has a porosity of from 20% to 70% by volume and a fragility of below 30. The membrane exhibits improved mechanical properties.

Abstract translation: 提供由主要互连的小尺寸孔分离的丙烯腈聚合物壁组成的干燥的多孔膜。 膜具有与支撑层成一体的表面层以形成单个连续的丙烯腈聚合物相。 至少一个表面层具有平均尺寸为0.001至0.05微米的孔，并且支撑层具有平均大于表面层或多孔中的孔的孔。 膜的孔隙率为20体积％至70体积％，脆性为30以下。膜具有改善的机械性能。

公开(公告)号：US4251605A

公开(公告)日：1981-02-17

申请号：US37545

申请日：1979-05-09

Applicant: Akio Inoue ,  Tadahiro Kobayashi ,  Toshio Iwasa

Inventor： Akio Inoue ,  Tadahiro Kobayashi ,  Toshio Iwasa

IPC: B32B5/18 ,  B01D71/40 ,  B01D71/42 ,  B32B5/14 ,  C08J5/18 ,  C08J9/28 ,  C08L33/20 ,  H01M2/14 ,  H01M2/16 ,  H01M10/14

CPC classification number: B01D71/42 ,  B01D67/0011 ,  B01D69/02 ,  H01M2/145 ,  H01M2/1653 ,  H01M2300/0005

Abstract: Provided is dried porous membrane composed of acrylonitrile polymer walls separating predominantly interconnecting small-size pores. The membrane has surface layers integrated with a support layer to form a single continuous acrylonitrile polymer phase. At least one of the surface layers has pores of from 0.001 to 0.05 micron in average size, and the support layer has pores which are on the average larger than the pores in the surface layer or layers. The membrane has a porosity of from 20% to 70% by volume and a fragility of below 30. The membrane exhibits improved mechanical properties.

Abstract translation: 提供由主要互连的小尺寸孔分离的丙烯腈聚合物壁组成的干燥的多孔膜。 膜具有与支撑层成一体的表面层以形成单个连续的丙烯腈聚合物相。 至少一个表面层具有平均尺寸为0.001至0.05微米的孔，并且支撑层具有平均大于表面层或多孔中的孔的孔。 膜的孔隙率为20体积％至70体积％，脆性为30以下。膜具有改善的机械性能。

公开(公告)号：US4038452A

公开(公告)日：1977-07-26

申请号：US575226

申请日：1975-05-07

Applicant: Tadahiro Kobayashi ,  Eiichi Wakita ,  Hideo Fukuda ,  Yukio Matsubayashi

Inventor： Tadahiro Kobayashi ,  Eiichi Wakita ,  Hideo Fukuda ,  Yukio Matsubayashi

IPC: D04H1/00 ,  D04H1/42 ,  D04H13/00

CPC classification number: D21H15/04 ,  D04H1/43 ,  D04H1/4391 ,  D21H5/1218 ,  Y10S428/904 ,  Y10T428/2909 ,  Y10T428/2922 ,  Y10T428/298 ,  Y10T428/31909 ,  Y10T442/633

Abstract: A bulky non-woven fabric of improved softness and uniformity in surface density, flatness and thickness is provided. The non-woven fabric comprises (a) 50 to 95% by weight of spontaneously crimped acrylonitrile polymer fibers having lengths of 4mm to 20mm and at least 20 crimps per inch of length, said acrylonitrile polymer consisting essentially of, in polymerized form, 80 to 100% by weight of acrylonitrile and 0 to 20% by weight of a copolymerizable monoethylenically unsaturated monomer, and (b) 5 to 50% by weight of fibrillated fibers of at least one acrylonitrile polymer, said acrylonitrile polymer comprising, in polymerized form, 60 to 98% by weight of acrylonitrile and 2 to 40% by weight of a copolymerizable monoethylenically unsaturated monomer having a carboxyl group or an amide or N-alkyl substituted amide group. The non-woven fabric is in the form of a web having a structure such that said spontaneously crimped fibers are entangled with both each other and with said fibrillated fibers, and having an apparent density of 0.05 to 0.25 g/cm.sup.3.

公开(公告)号：US4099068A

公开(公告)日：1978-07-04

申请号：US750819

申请日：1976-12-15

Applicant: Tadahiro Kobayashi ,  Teluo Tomura

Inventor： Tadahiro Kobayashi ,  Teluo Tomura

IPC: H02J3/24 ,  G06F1/28 ,  H02H3/24 ,  H02J9/00 ,  H02M1/18

CPC classification number: H02H3/24

Abstract: A power supply interruption detecting circuit which prevents an error in a write signal or sending and receiving signals of a data processing unit in the case of interruption of a commercial power supply or a power supply voltage drop resulting from an accident of other units connected to the same power supply. An abrupt drop of the power supply input voltage is detected by comparing the voltage of a CR circuit of a small time constant with the voltage of a CR circuit of a relatively large time constant. A slow input voltage drop is detected by comparing the voltage of the CR circuit of small time constant with a constant reference voltage. The power supply interruption is rapidly detected in substantially a constant short time regardless of input voltage variations and the write signal or the sending and receiving signals are each clamped at predetermined logic voltage, by which sending and writing of an error signal can be effectively prevented.