Global Patent Index - EP 0861929 A4

EP 0861929 A4 2000-04-05 - EASILY FIBRILLABLE FIBER

Title (en)

EASILY FIBRILLABLE FIBER

Title (de)

LEICHT FIBRILLIERBARE FASER

Title (fr)

FIBRE AISEMENT FIBRILLABLE

Publication

EP 0861929 A4 (EN)

Application

EP 96915189 A

Priority

  • JP 9601322 W
  • JP 10087495 A

Abstract (en)

[origin: EP0861929A1] A fiber of sea-islands phase separation wherein the sea component comprises a vinyl alcohol based polymer with high orientation and great crystallinity and the islands component comprises a water-insoluble cellulose based polymer with excellent absorptivity of alkaline solutions, thermal resistance and heat fusion resistance, and wherein the size of the islands is 0.03 to 10 mu m and the strength is 3 g/d or more, is readily disintegrated into a fibril of a diameter of 0.05 to 8 mu m when a mechanical stress is imposed onto the fiber wet in water. From the fibril with good hydrophilicity, high strength, great particle captivity and excellent reinforcing performance, and additionally with good absorptivity of alkaline solutions and great thermal resistance and heat fusion resistance, none of the fiber components therein is solubilized during fibrillation. Neither a beating process nor a beating solution causes foaming or environmental pollution. The fibril is extremely useful for use in separator sheets for alkaline batteries, reinforcing fibers of cement slate plates, reinforcing fibers of frictional materials and the like.

IPC 1-7 (main, further and additional classification)

D01F 8/02; D01F 8/10; H01M 2/16

IPC 8 full level (invention and additional information)

D01F 6/14 (2006.01); D01D 5/36 (2006.01); D01F 8/02 (2006.01); D01F 8/10 (2006.01); D04H 13/02 (2006.01)

CPC (invention and additional information)

D01F 8/10 (2013.01); D01F 8/02 (2013.01)

Citation (search report)

Designated contracting state (EPC)

BE CH DE FR GB IT LI NL SE

EPO simple patent family

EP 0861929 A1 19980902; EP 0861929 A4 20000405

INPADOC legal status


2003-07-02 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20021225

2000-04-05 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20000221

2000-04-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): BE CH DE FR GB IT LI NL SE

2000-04-05 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7D 01F 8/02 A, 7D 01F 8/10 B, 7H 01M 2/16 B

1999-05-06 [RAP1] TRANSFER OF RIGHTS OF AN APPLICATION

- Owner name: KURARAY CO. LTD.

1999-05-06 [RAP1] TRANSFER OF RIGHTS OF AN APPLICATION

- Owner name: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

1998-09-02 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19980218

1998-09-02 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE CH DE FR GB IT LI NL SE