Paper making and fiber liberation – Processes and products – Non-fiber additive
Reexamination Certificate
2004-02-06
2010-06-15
Tucker, Philip C (Department: 1791)
Paper making and fiber liberation
Processes and products
Non-fiber additive
C162S164400, C162S168200, C162S168300, C162S177000, C162S179000
Reexamination Certificate
active
07736465
ABSTRACT:
The invention relates to a composition comprising (a) a functional promoter comprising a water-soluble anionic polymer having a molecular weight of at least about 50,000 daltons and a molecular weight charge index value of at least about 10,000; (b) a cationic surfactant component; such that when the composition treats a fibrous substrate, in conjunction with a cationic strength agent, the treated fibrous substrate exhibits (i) a ratio of wet tensile strength to dry tensile strength ranging from about 1:5 to about 1:2 and (ii) an increase in a ratio of wet tensile strength to dry tensile strength of at least about 10%, as compared to when the fibrous substrate is treated with the functional promoter and without a surfactant. The invention also relates to a paper product made with such a system, and method for imparting wet strength to a paper product with the functional promoter.
REFERENCES:
patent: 2926154 (1960-02-01), Keim
patent: 3049469 (1962-08-01), Davison
patent: 3058873 (1962-10-01), Keim
patent: 3066066 (1962-11-01), Keim
patent: 3125552 (1964-03-01), Loshaek
patent: 3186900 (1965-06-01), DeYoung
patent: 3197427 (1965-07-01), Schmalz
patent: 3224986 (1965-12-01), Butler et al.
patent: 3224990 (1965-12-01), Babcock
patent: 3227615 (1966-01-01), Korden
patent: 3227671 (1966-01-01), Keim
patent: 3239491 (1966-03-01), Tsou
patent: 3240664 (1966-03-01), Earle, Jr.
patent: 3240761 (1966-03-01), Keim et al.
patent: 3248280 (1966-04-01), Hyland, Jr.
patent: 3250664 (1966-05-01), Conte et al.
patent: 3311594 (1967-03-01), Earle, Jr.
patent: 3329657 (1967-07-01), Strazdins et al.
patent: 3332834 (1967-07-01), Reynolds, Jr.
patent: 3332901 (1967-07-01), Keim
patent: 3352833 (1967-11-01), Earle, Jr.
patent: 3442754 (1969-05-01), Espy
patent: 3459697 (1969-08-01), Goldberg et al.
patent: 3483077 (1969-12-01), Aldrich
patent: 3609126 (1971-09-01), Asao et al.
patent: 3733290 (1973-05-01), Williams et al.
patent: 3778339 (1973-12-01), Williams et al.
patent: 3813362 (1974-05-01), Coscia et al.
patent: 4714736 (1987-12-01), Juhl et al.
patent: 5239047 (1993-08-01), Devore et al.
patent: 5393337 (1995-02-01), Nakamura et al.
patent: 5538595 (1996-07-01), Trokhan et al.
patent: 5840403 (1998-11-01), Trokhan et al.
patent: 6261679 (2001-07-01), Chen et al.
patent: 6939443 (2005-09-01), Ryan et al.
patent: 2938588 (1981-04-01), None
patent: 3323732 (1985-01-01), None
patent: 1016380 (1966-01-01), None
patent: 1073044 (1967-06-01), None
patent: 1218394 (1971-01-01), None
patent: 07-027833 (1995-01-01), None
patent: 08-008875 (1996-01-01), None
patent: 08-012083 (1996-01-01), None
patent: 08-012088 (1996-01-01), None
patent: WO9920837 (1999-04-01), None
patent: WO2004072376 (2004-08-01), None
Brevard William
Ryan Michael
Cantor & Colburn LLP
Felton Michael J
Kemira Oyj
Tucker Philip C
LandOfFree
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