CROSSLINKED POLYMER, PROCESS FOR PRODUCING THE SAME, ABSORBENT STRUCTURE, AND ABSORBENT ARTICLE

Title:

CROSSLINKED POLYMER, PROCESS FOR PRODUCING THE SAME, ABSORBENT STRUCTURE, AND ABSORBENT ARTICLE

Document Type and Number:

WIPO Patent Application WO/2001/079314

Kind Code:

A1

Abstract:

A crosslinked polymer (A) which comprises, as essential structural units, units derived from (a) one or more vinyl monomers selected from the group consisting of water-soluble vinyl monomers and/or vinyl monomers which become water-soluble upon hydrolysis and units derived from (b) a crosslinking agent and which satisfies the following requirements: (1): (X) ≥ 25g/g, (2): (Y) ≥ 15g/g, and (3): (Y) ≥ -0.54 (X) + 41. It has exceedingly high water retentivity and exceedingly high absorbing power under load. When applied to an absorbent structure and an absorbent article, the polymer has excellent absorbing performance. In the relationships, (X) is the amount of physiological saline retained through 1-hour absorption and (Y) is the amount of physiological saline absorbed through 1-hour standing under a load of 60 g/cm?2¿.

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Inventors:

TAGAWA DAISUKE (JP)
ASAI TATSUYA (JP)
IWASAKI YOSHIYUKI (JP)
OTA YOSHIHISA (JP)
TANAKA KEIJI (JP)

Application Number:

PCT/JP2001/003138

Publication Date:

October 25, 2001

Filing Date:

April 11, 2001

Export Citation:

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Assignee:

SANYO CHEMICAL IND LTD (JP)
TAGAWA DAISUKE (JP)
ASAI TATSUYA (JP)
IWASAKI YOSHIYUKI (JP)
OTA YOSHIHISA (JP)
TANAKA KEIJI (JP)

International Classes:

A61F13/15; A61L15/60; C08F2/00; C08F4/06; C08F8/12; C08F220/04; C08F220/06; C08F220/56; (IPC1-7): C08F220/56; C08F220/06; C08F4/06; C08F8/00; C08F216/12

Domestic Patent References:

WO1991018031A1

1991-11-28

Foreign References:

JP2000026510A	2000-01-25
JPH03179008A	1991-08-05
EP0618005A2	1994-10-05
JPH01113406A	1989-05-02
US5145906A	1992-09-08

Other References: