Superabsorbent polymers having delayed water absorption...

Details Superabsorbent polymers having delayed water absorption... Superabsorbent polymers having delayed water absorption...

2005-01-11

2005-01-11

Cole, Elizabeth M. (Department: 1771)

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

C442S414000, C442S417000, C162S158000, C162S231000

Reexamination Certificate

active

06841229

ABSTRACT:
A superabsorbent polymer comprising a delayed absorption superabsorbent polymer having a free water absorbency property of absorbing less than about 3 grams of aqueous saline per gram of superabsorbent polymer in about 6 seconds, for a full particle size distribution of superabsorbent polymer ranging from about 40 micrometers to about 890 micrometers.

REFERENCES:
patent: 5399591 (1995-03-01), Smith et al.
patent: 5409771 (1995-04-01), Dahmen et al.
patent: 5453323 (1995-09-01), Chambers et al.
patent: 6239230 (2001-05-01), Eckert et al.
patent: 6323252 (2001-11-01), Gartner et al.

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