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 fibre with a reduced fibrillation tendency. The fibre is treated with a chemical reagent, preferably substantially colourless, having 2 to 6 functional groups reactive with cellulose, suitably dissolved in an aqueous solution.
Claims11
A dyed solvent-spun cellulose fibre prepared by a process comprising the steps of (1) applying to solvent-spun cellulose fibre (a) a chemical reagent having two to six functional groups reactive with cellulose, under alkaline conditions, said reagent not containing a chromophore, and (b) a dyestuff for cellulose selected from the group consisting of direct dyestuffs, azo dyestuffs, fibre-reactive dyestuffs, sulphur dyestuffs and vat dyestuffs, and (2) heating said fibre to produce reaction between said fibre and said functional groups, thereby imparting a reduced fibrillation tendency to said dyed fibre.
A dyed solvent-spun cellulose fibre prepared by a process comprising the steps of (1) applying to never-dried solvent-spun cellulose fibre a chemical reagent having two to six functional groups reactive with cellulose, under alkaline conditions, said reagent not containing a chromophore, (2) heating and drying said fibre, thereby to produce reaction between said fibre and said chemical reagent, and (3) dyeing said dried fibre with a dyestuff for cellulose selected from the group consisting of direct dyestuffs, azo dyestuffs, fibre-reactive dyestuffs, sulphur dyestuffs, and vat dyestuffs, thereby providing said dyed fibre with a reduced fibrillation tendency.
Dependencies are inferred from the claim text.