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Title:
ABSORBENTS AND PROCESS FOR PRODUCING THE SAME, ABSORBABLE CONSTRUCTS AND ABSORBABLE ARTICLES
Document Type and Number:
WIPO Patent Application WO/2002/005949
Kind Code:
A1
Abstract:
Absorbents comprising an water-absorbable resin and water-insoluble nonporous spherical monoparticles having an average diameter of 1 to 50 nm; a process for producing these absorbent by mixing the spherical monoparticles, which have been solubilized in water, with dry powdery particles of the water-absorbable resin; absorbable constructs composed of the above absorbent with a matrix wherein the amount of the absorbent ranges from 30 to 95% by weight based on the absorbable construct; and absorbable articles provided with the absorbable construct, a liquid-permeable sheet and an air-permeable back sheet. These absorbents, absorbable constructs and absorbable articles are excellent in the diffusion/absorption speed and absorption amount of a liquid within the resin even in case of absorbing a liquid containing water-insoluble or hardly water-soluble matters such as menstrual blood or feces.

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Inventors:
OTA YOSHIHISA (JP)
IWASAKI YOSHIYUKI (JP)
Application Number:
PCT/JP2001/006111
Publication Date:
January 24, 2002
Filing Date:
July 13, 2001
Export Citation:
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Assignee:
SANYO CHEMICAL IND LTD (JP)
OTA YOSHIHISA (JP)
IWASAKI YOSHIYUKI (JP)
International Classes:
A01K1/015; A61F13/15; A61L15/18; A61L15/24; A61L15/42; B01J20/26; B01J20/28; (IPC1-7): B01J20/26; A61L15/18; A61L15/22; A61L15/24; A61F13/15; A61F13/47; A61F13/53; A47K10/16; A01K1/015
Domestic Patent References:
WO1996017884A11996-06-13
WO1999003577A11999-01-28
Foreign References:
US5147921A1992-09-15
JPS56133028A1981-10-17
JPH0847637A1996-02-20
JPH0788171A1995-04-04
JPS63267435A1988-11-04
JPH1193073A1999-04-06
EP0844270A11998-05-27
US5087656A1992-02-11
JPH11315112A1999-11-16
JPS63251437A1988-10-18
JPH0810616A1996-01-16
US5258448A1993-11-02
US5147921A1992-09-15
Other References:
See also references of EP 1325777A4
Attorney, Agent or Firm:
Yoshikawa, Toshio (6F 9-19, Higashinoda-cho 4-chome Miyakojima-ku Osaka-shi Osaka, JP)
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