Paper making and fiber liberation – Processes and products – Non-fiber additive
Reexamination Certificate
2007-03-27
2007-03-27
Hug, Eric (Department: 1731)
Paper making and fiber liberation
Processes and products
Non-fiber additive
C162S090000, C162S164100, C162S184000, C162S158000, C008S116100, C008S125000, C008S493000
Reexamination Certificate
active
10677811
ABSTRACT:
The invention provides a method for preparing cross-linked cellulosic fibers. A sheet of cellulosic fibers treated with a caustic solution under non-mercerizing conditions is cross-linked with a solution containing polymeric polycarboxylic acid cross-linking agents. The treated cellulosic fibrous material is dried and cured in sheet form to promote intrafiber cross-linking. Cross-linked fiber products of this method, which is economic, that possess good absorption and wet resiliency properties are also disclosed.
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Cooper W. Jason
Murguia Tina R.
Sears Karl D.
Cordray Dennis
Hug Eric
Kramer Levin Naftalis & Frankel LLP
Rayonier Products & Financial Services Company
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