Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2003-10-24
2010-11-16
Kiliman, Leszek (Department: 1787)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C428S404000, C428S405000, C428S406000, C428S407000, C525S375000, C526S062000, C427S212000
Reexamination Certificate
active
07833624
ABSTRACT:
A process for producing an absorbent polymer structure (Pa) by treating the outer portion of an untreated absorbent polymer structure (Pu1). The process includes the step of bringing the outer portion of the untreated absorbent polymer structure (Pu1) into contact with an aqueous solution including at least one chemical cross-linker and at least one inorganic compound in dispersed colloidal form. The process also includes the step of heating the absorbent polymer structure, of which the outer portion has been brought into contact with the aqueous solution, at a temperature within a range from about 40 to about 300° C., so that the outer portion of the absorbent polymer structure is more strongly cross-linked in comparison to the inner portion and the inorganic compound is at least partly immobilized in the outer portion of the absorbent polymer structure.
REFERENCES:
patent: 4535098 (1985-08-01), Evani et al.
patent: 4587308 (1986-05-01), Makita et al.
patent: 4734478 (1988-03-01), Tsubakimoto et al.
patent: 5092933 (1992-03-01), Okamoto et al.
patent: 5140076 (1992-08-01), Hatsuda et al.
patent: 5147921 (1992-09-01), Mallo
patent: 5164428 (1992-11-01), Okamoto et al.
patent: 5229488 (1993-07-01), Nagasuna et al.
patent: 5326819 (1994-07-01), Kanbayashi et al.
patent: 5747391 (1998-05-01), Neubach
patent: 5837789 (1998-11-01), Stockhausen et al.
patent: 5843575 (1998-12-01), Wang et al.
patent: 5849405 (1998-12-01), Wang et al.
patent: 5851672 (1998-12-01), Wang et al.
patent: 5858535 (1999-01-01), Wang et al.
patent: 6056854 (2000-05-01), Woodrum
patent: 6099950 (2000-08-01), Wang et al.
patent: 6232520 (2001-05-01), Hird et al.
patent: 6288158 (2001-09-01), Schapowalov et al.
patent: 6605673 (2003-08-01), Mertens et al.
patent: 6620889 (2003-09-01), Mertens et al.
patent: 6623848 (2003-09-01), Brehm et al.
patent: 7087669 (2006-08-01), Ota et al.
patent: 7101946 (2006-09-01), Brehm et al.
patent: 7179862 (2007-02-01), Mertens et al.
patent: 2002/0128396 (2002-09-01), Sackmann et al.
patent: 2002/0128618 (2002-09-01), Frenz et al.
patent: 2003/0157318 (2003-08-01), Brehm et al.
patent: 3503458 (1985-08-01), None
patent: 3523617 (1986-01-01), None
patent: 4402187 (1995-07-01), None
patent: 19646484 (1997-05-01), None
patent: 68927772 (1997-07-01), None
patent: 69030971 (1997-12-01), None
patent: 19805447 (1999-08-01), None
patent: 19854575 (2000-05-01), None
patent: 69132818 (2002-06-01), None
patent: 0450922 (1991-10-01), None
patent: 0450923 (1991-10-01), None
patent: 1211266 (2002-06-01), None
patent: 1325777 (2003-07-01), None
patent: H4120176 (1992-04-01), None
patent: 4214734 (1992-08-01), None
patent: H6016822 (1994-01-01), None
patent: 1994-16822 (1995-08-01), None
patent: 9194598 (1997-07-01), None
patent: 2001137704 (2001-05-01), None
patent: WO 95/22356 (1995-08-01), None
patent: WO 99/49905 (1999-10-01), None
patent: WO 01/13841 (2001-03-01), None
patent: 0166056 (2001-09-01), None
patent: 0205949 (2002-01-01), None
patent: 0220678 (2002-03-01), None
Levasil®, The Versatile Silica Sols with a Broad Application Spectrum, copyright Sep. 2006, pp. 1-24, H.C. Starck GmbH & Co. KG.
Nissan Chemical America Corporation, SNOWTEX Information Sheet, copyright 2007, web site, www.nissanchem-usa.com/snowtex.php, Nissan Chemical America Corporation.
International Preliminary Examination Report completed on Jul. 16, 2004 in connection with PCT/EP2003/011828.
Brehm Helmut
Harren Jörg
Kerkmann Andreas
Ramlow Stephan
Evonik Stockhuasen GmbH
Kiliman Leszek
Smith Moore Leatherwood LLP
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