Cellulose fibre
AssigneeLenzing Atkiengesellschaft
InventorsHeinrich Firgo, Sigrid Seidl, Peter Bartsch, Berndt Koll, Eduard Mulleder
Life of this patent
Estimating the term…
Abstract
This invention relates to a process for the production of a cellulose molded body according to the amine-oxide process, which results in a molded body having reduced and effectively controllable fibrillation properties.
Claims28
A process for the production of a cellulose molded body according to an amine-oxide process comprising the steps of
- (a) providing a suspension of cellulose in an aqueous tertiary amine-oxide, the suspension including a substance which reacts with the cellulose and incorporates functional groups therein which are more nucleophilic than hydroxyl groups in the cellulose;
- (b) transforming the suspension of cellulose into a spinnable solution;
- (c) extruding said solution through a spinneret thereby forming a molded body;
- and
- (d) conveying the molded body to a precipitation bath.
A process for the production of a cellulose molded body according to an amine-oxide process comprising the steps of
- (a) providing a suspension of cellulose in an aqueous tertiary amine-oxide wherein the cellulose comprises functional groups which are more nucleophilic than hydroxy groups of said cellulose;
- (b) transforming the suspension of cellulose into a spinnable solution;
- (c) extruding said solution through a spinneret thereby forming a molded body;
- and
- (d) conveying the molded body to a precipitation bath.
A process for the production of a cellulose molded body according to an amine-oxide process comprising the steps of
- (a) providing a suspension of cellulose in an aqueous tertiary amine-oxide, the suspension including a polymer having functional groups which are more nucleophilic than hydroxyl groups of said cellulose;
- (b) transforming the suspension of cellulose into a spinnable solution;
- (c) extruding said solution through a spinneret thereby forming a molded body;
- (d) conveying the molded body to a precipitation bath.
A process for the production of a cellulose molded body according to an amine-oxide process comprising the steps of
- (a) providing a suspension of cellulose in an aqueous tertiary amine-oxide;
- (b) transforming the suspension of cellulose in an aqueous tertiary amine-oxide into a spinnable solution;
- (c) adding a substance to the spinnable solution which reacts with the cellulose and incorporates functional groups therein which are more nucleophilic than hydroxy groups of the cellulose;
- (d) extruding said solution through a spinneret thereby forming a molded body;
- and
- (e) conveying the molded body to a precipitation bath.
A process for the production of a cellulose molded body according to an amine-oxide process comprising the steps of
- (a) producing a suspension of cellulose in an aqueous tertiary amine-oxide;
- (b) transforming the suspension of cellulose into a spinnable solution;
- (c) adding a polymer to the spinnable solution, the polymer having functional groups which arc more nucleophilic than hydroxy groups of the cellulose;
- (d) extruding said solution through a spinneret thereby forming a molded body;
- and
- (e) conveying the molded body to a precipitation bath.
A process for the production of a cellulose molded body according to an amine-oxide process, comprising the steps of
- (a) providing a suspension of cellulose in an aqueous tertiary amine-oxide;
- (b) transforming a suspension of cellulose in an aqueous tertiary amine-oxide into a spinnable solution;
- (c) extruding said solution through a spinneret thereby forming a molded body;
- (d) incorporating functional groups which arc more nucleophilic than hydroxy groups of the cellulose into the molded body;
- and
- (e) conveying the molded body to precipitation bath.
A process for the production of a cellulose molded body according to an amine-oxide process comprising the steps of
- (a) providing a suspension of cellulose in an aqueous teary amine-oxide;
- (b) transforming a suspension of cellulose in an aqueous tertiary amine-oxide into a spinnable solution;
- (c) extruding said solution through a spinneret thereby forming a molded body;
- (d) contacting the molded body with an oligomer or a polymer having functional groups which are more nucleophilic than hydroxy groups of the cellulose;
- and
- (e) conveying the molded body to a precipitation bath.
Dependencies are inferred from the claim text.