Process for reducing the fibrillation tendency of solvent-spun cellulose fibre
AssigneeCourtaulds Limited
InventorJames M. Taylor
Life of this patent
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Abstract
A process is disclosed for providing a solvent-spun cellulose fiber with a reduced fibrillation tendency. The fiber is treated with a chemical reagent, preferably substantially colorless, having 2 to 6 functional groups reactive with cellulose, suitably dissolved in an aqueous solution.
Claims33
A process for fibre treatment comprising contacting solvent-spun cellulose fibre with an aqueous system comprising a substantially colourless chemical reagent having two to six functional groups reactive with cellulose and drying said fibre to reduce the fibrillation tendency of said fibre.
A process for fibre treatment comprising contacting solvent-spun cellulose fibre with an aqueous system which comprises a chemical reagent having two to six functional groups reactive with cellulose and drying said fibre to reduce the fibrillation tendency of said fibre, said fibre being of substantially the same colour before and after said contacting and drying steps.
A process according to claim 5 wherein the or each ring is selected from the group consisting of pyridazine, pyrimidine and sym-triazine rings.
A solvent-spun cellulose fibre having a reduced fibrillation tendency produced by the process of contacting said fiber with an aqueous solution of a substantially colourless chemical reagent having two to six functional groups reactive with cellulose so as to reduce the fibrillation tendency of the fibre.
A process for the manufacture of solvent-spun cellulose fibre with a reduced fibrillation tendency comprising the steps of:
- (a) dissolving cellulose in a solvent to form a solution, the solvent being miscible with water;
- (b) extruding the solution through a die to form a fibre precursor;
- (c) passing the fibre precursor through at least one water bath to remove the solvent and form the fibre
- (d) contacting the fibre with a solution of a substantially colourless chemical reagent having two to six functional groups reactive with cellulose;
- and
- (e) drying the treated fibre.
Dependencies are inferred from the claim text.