Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
WATER SHUT-OFF MATERIAL
Document Type and Number:
Japanese Patent JP2009249401
Kind Code:
A
Abstract:

To provide a water shut-off material capable of sufficiently exhibiting water shutting-off performance in a short time.

The water shut-off material contains a solid component containing bentonite and a liquid having a hydrophobic property. When water intrudes into a clearance formed between a plurality of bentonite particles 1 and filled with the hydrophobic liquid, the hydrophobic liquid in the clearance 2 is easily pushed out by water without being mixed therewith, and the hydrophobic liquid in the clearance 2 is replaced by water. Thereby, the bentonite particle 1 is contacted with water in a short time from intrusion of water. Accordingly, the water shut-off material can exhibit the water shutting-off performance in a short time as compared with the conventional water shut-off material in which the bentonite particle 1 is started to be swelled after the hydrophilic liquid near the bentonite particle 1 is sufficiently diluted.


Inventors:
KOBAYASHI KAZUMI
TOIDA KATSU
YOKOZEKI KOSUKE
WATANABE KENZO
Application Number:
JP2008095323A
Publication Date:
October 29, 2009
Filing Date:
April 01, 2008
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KAJIMA CORP
International Classes:
C09K3/10; C09K3/12; C09K17/02; C09K17/08; C09K17/14; C09K17/38; C09K17/42; E02B7/02; E02D29/045; E04B1/682; E21D13/00; C09K103/00; C09K107/00
Domestic Patent References:
JPH06248895A1994-09-06
JP2003213259A2003-07-30
JP2007232388A2007-09-13
JP2008045314A2008-02-28
JPH1076238A1998-03-24
JPH0297771A1990-04-10
JP2003213260A2003-07-30
JPH08169712A1996-07-02
JP2002088344A2002-03-27
JPH09248877A1997-09-22
JPH10338812A1998-12-22
JPH0458840B21992-09-18
JPH09100462A1997-04-15
JPH08231956A1996-09-10
JPH0297771A1990-04-10
JP2003213260A2003-07-30
JPH08169712A1996-07-02
JP2002088344A2002-03-27
JPH09248877A1997-09-22
JPH10338812A1998-12-22
JPH0458840B21992-09-18
JPH09100462A1997-04-15
JPH08231956A1996-09-10
JPH06248895A1994-09-06
JP2003213259A2003-07-30
JP2007232388A2007-09-13
JP2008045314A2008-02-28
JPH1076238A1998-03-24
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki



 
Previous Patent: METHOD FOR PRODUCING POLYMER FOR PHOTORESIST

Next Patent: HEAT RESISTANT POLYLACTIC ACID MOLDED PRODUCT AND METHOD FOR PRODUCING IT