Manufacture of web superabsorbent polymer and fiber

Details Manufacture of web superabsorbent polymer and fiber Manufacture of web superabsorbent polymer and fiber

2006-12-05

2006-12-05

Boykin, Terressa (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

C428S402000, C604S368000

Reexamination Certificate

active

07144980

ABSTRACT:
A web of superabsorbent polymer and fiber made by an in situ neutralization, wet-laid process, wherein the degree of neutralization of the superabsorbent polymer is partial, preferably less than about 80 mol %. The web exhibits an excellent centrifuge retention capacity property, as compared to prior webs of superabsorbent polymer and cellulosic fiber made by in situ neutralization, wherein the degree of neutralization is total, such as 100 mol % or more.

REFERENCES:
patent: 5409771 (1995-04-01), Dahmen et al.
patent: 6136873 (2000-10-01), Hahnle et al.
patent: 6174929 (2001-01-01), Hahnle et al.
International Search Report mailed on Oct. 17, 2000 in PCT/IB00/00867.
International Preliminary Examination Report mailed on Sep. 25, 2001 in PCT/IB00/00867.
European Examination Communication mailed on Apr. 11, 2003 in EP 00 938 962.8-2123.

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