Title:
SURFACE-TREATED SUPERABSORBENT POLYMER PARTICLES
Document Type and Number:
WIPO Patent Application WO2001089592
Kind Code:
A3
Abstract:
Surface-treated superabsorbent polymer particles obtained by mixing 100 parts by weight of superabsorbent polymer particles with 0.001 to 10 parts by weight of a hydroxyalkylamide, and heating the surface-treated superabsorbent polymer particles to crosslink molecular chains existing at least in the vicinity of the surfaces of the superabsorbent polymer particles is disclosed. Surface crosslinking the superabsorbent polymer particles with a hydroxyalkylamide substantially increases both the rate of liquid absorption and the quantity of liquid absorbed and retained by the superabsorbent particles.
Inventors:
MITCHELL MICHAEL A (US)
ECKERT DAVID (US)
BIEHOFFER THOMAS W (US)
ECKERT DAVID (US)
BIEHOFFER THOMAS W (US)
Application Number:
PCT/US2001/016169
Publication Date:
September 19, 2002
Filing Date:
May 17, 2001
Export Citation:
Assignee:
BASF AG (DE)
MITCHELL MICHAEL A (US)
ECKERT DAVID (US)
BIEHOFFER THOMAS W (US)
MITCHELL MICHAEL A (US)
ECKERT DAVID (US)
BIEHOFFER THOMAS W (US)
International Classes:
A61F5/44; A61F13/49; A61L15/42; A61L15/60; A61F13/53; C08F8/30; C08J3/12; C08J3/24; C08K5/20; C08L101/14; (IPC1-7): C08J3/24; C08L101/14; C08K5/20; C08F8/30
Foreign References:
| EP0937739A2 | 1999-08-25 | |||
| US4076917A | 1978-02-28 | |||
| US6239230B1 | 2001-05-29 |
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