Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2007-01-23
2007-01-23
Le, H. Thi (Department: 1773)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C428S323000, C428S327000, C428S407000, C604S367000, C604S372000
Reexamination Certificate
active
10911302
ABSTRACT:
The present invention relates to superabsorbent polymer particles with improved surface cross-linking and their use in absorbent articles.The superabsorbent polymer particles of the present invention comprise a water-absorbing resin and the reaction product of a radiation activatable surface cross-linker wherein the reaction product of the radiation activatable surface cross-linker is present at surfaces of the superabsorbent polymer particles. The radiation activatable surface cross-linker comprises at least two radiation activatable groups R, which are covalently bound to each other or to at least one spacer group S.Moreover, the invention relates to a process for making these superabsorbent polymer particles.
REFERENCES:
patent: 3214492 (1965-10-01), Tocker
patent: 3429852 (1969-02-01), Skoultchi
patent: 3622848 (1971-11-01), Hendrix et al.
patent: 3661875 (1972-05-01), Sieja
patent: 4043887 (1977-08-01), Pacifici et al.
patent: 4062817 (1977-12-01), Westerman
patent: 4076663 (1978-02-01), Masuda et al.
patent: 4093776 (1978-06-01), Aoki et al.
patent: 4304895 (1981-12-01), Loshaek
patent: 4666983 (1987-05-01), Tsubakimoto et al.
patent: 4734478 (1988-03-01), Tsubakimoto et al.
patent: 4922004 (1990-05-01), Köhler et al.
patent: 5248805 (1993-09-01), Boettcher et al.
patent: 5597873 (1997-01-01), Chambers et al.
patent: 5633316 (1997-05-01), Gartner et al.
patent: 5859084 (1999-01-01), Schroder et al.
patent: 5922417 (1999-07-01), Singleton et al.
patent: 5976696 (1999-11-01), Collette et al.
patent: 6007833 (1999-12-01), Chudzik et al.
patent: 6222091 (2001-04-01), Beihoffer et al.
patent: 6376072 (2002-04-01), Evans et al.
patent: 6455600 (2002-09-01), Hähnle et al.
patent: 6565981 (2003-05-01), Messner et al.
patent: 6803107 (2004-10-01), Mitchell et al.
patent: 2003/0135172 (2003-07-01), Whitmore et al.
patent: 2004/0137250 (2004-07-01), Daniel et al.
patent: 2004/0140070 (2004-07-01), Ponomarenko et al.
patent: 2004/0155383 (2004-08-01), Jackson et al.
patent: 2005/0142965 (2005-06-01), LaFortune
patent: 0 279 475 (1988-08-01), None
patent: 0 700 673 (1996-03-01), None
patent: 1-292103 (1989-11-01), None
patent: WO 81/03274 (1981-11-01), None
Addington Eric T.
Le H. Thi
Milbrada Edward
Powell John G.
The Procter & Gamble & Company
LandOfFree
Superabsorbent polymers having radiation activatable surface... 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 polymers having radiation activatable surface..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superabsorbent polymers having radiation activatable surface... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3781484