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US 5,562,739 AGranted
Lyocell fiber treatment method
AssigneeCourtaulds Fibres (Holdings) Limited
InventorPeter G. Urben
Life of this patent
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Abstract
The fibrillation tendency of lyocell fibre can be reduced by application to the fibre of a solution of a chemical reagent which contains at least two aliphatic aldehyde groups capable of reacting with each other in aqueous solution to form a cyclic hydrate containing a --CHOH--O--CHOH-- linkage, followed by reaction between the fibre and the reagent. The protection afforded by the invention is retained upon repeated laundering.
Claims9
A method of providing lyocell fibre with a reduced fibrillation tendency comprising the steps of
- applying to the lyocell fibre a chemical reagent having at least two functional groups reactive with cellulose, wherein at least two of said functional groups are aliphatic aldehyde groups susceptible of reaction with each other in aqueous solution to form a cyclic hydrate containing a --CHOH--O--CHOH-- linkage;
- and
- producing reaction between the fibre and the chemical reagent, whereby fibrillation tendency of said lyocell fibre is reduced.
Dependencies are inferred from the claim text.