Superabsorbent polymer having increased rate of water...

Details Superabsorbent polymer having increased rate of water... Superabsorbent polymer having increased rate of water...

2007-01-16

2007-01-16

Harlan, Robert D. (Department: 1713)

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

Synthetic resins

Cellular products or processes of preparing a cellular...

C521S142000, C524S729000, C523S105000, C523S132000, C523S173000, C525S329700, C525S330200

Reexamination Certificate

active

10741271

ABSTRACT:
The invention relates to a superabsorbent polymer wherein an increased rate of water absorption is obtained by the addition of an encapsulated blowing agent. The invention relates to a superabsorbent polymer including an encapsulating blowing agent and having a vortex time of 40 seconds or less. In particular, the superabsorbent polymer includes from about 55 to about 99.9 wt. % of polymerizable unsaturated acid group containing monomers; from about 0.001 to about 5.0 wt. % of internal crosslinking agent; wherein the wherein the composition has a degree of neutralization of more than about 20%; and from about 0.05 to about 10.0 wt. % of an encapsulated blowing agent.

REFERENCES:
patent: 5118719 (1992-06-01), Lind
patent: 5154713 (1992-10-01), Lind
patent: 5236965 (1993-08-01), Engelhardt et al.
patent: 5314420 (1994-05-01), Smith et al.
patent: 5399591 (1995-03-01), Smith et al.
patent: 5409771 (1995-04-01), Dahmen et al.
patent: 5451613 (1995-09-01), Smith et al.
patent: 5712316 (1998-01-01), Dahmen et al.
patent: 6136873 (2000-10-01), Hahnle et al.
patent: 6441266 (2002-08-01), Dyer et al.
patent: 6562879 (2003-05-01), Hatsuda et al.
patent: 2002/0039869 (2002-04-01), Achille
patent: 2003/0118821 (2003-06-01), Sun et al.
patent: WO 98/47454 (1998-10-01), None

Affiliated with

Also associated with

Rating

Superabsorbent polymer having increased rate of water... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Superabsorbent polymer having increased rate of water..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superabsorbent polymer having increased rate of water... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3724596