Title: Process for making a precursor of a solution of cellulose

Abstract: A process is provided for making a solid precursor of a solution of cellulose in a tertiary amine oxide by suspending cellulose in a mixture containing a tertiary amine oxide and water under conditions where the amine oxide will dissolve the cellulose and cooling the resulting product to ambient temperature to provide a solid solution of cellulose in amine oxide. The product may be comminuted to form chips which are adapted to be fed to an extruder or other apparatus for shaping it into a cellulosic article. An organic liquid which is miscible with the tertiary amine oxide and is a non-solvent for the cellulose may be included with the amine oxide-water mixture to improve the up-take of the tertiary amine oxide by the cellulose.

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Inventors: McCorsley, III, Clarence C. (Asheville, NC, US)
Varga, Julianna K. (Asheville, NC, US)

Application Number: 819081
Filing Date: 1977-07-26
Publication_date: 1979-03-06
Assignee: Akzona Incorporated (Asheville, NC)
Primary Class(es): 106/200.3 8/130.1
Other Classes:
US Patent Ref:

3447956	Jun, 1969	Johnson	8/130.
3508941	Apr, 1970	Johnson	106/126.

Other Refs:
Primary Examiner: Morris, Theodore
Assistant Examiner:
Attorney: Young; Francis W., Hall; Jack H., Upchurch; Clelle W.