Polysaccharide fibers and method for producing same

Patent metadata

Field	Value
Publication number	US-2016138196-A1
Application number	US-201414899212-A
Country	US
Kind code	A1
Filing date	Jun 13, 2014
Priority date	Jun 17, 2013
Publication date	May 19, 2016
Grant date	—

Abstract

The present invention relates to a method for the production of polysaccharide fibers which contain a mixture of cellulose and α( 1→3 )-glucan as a fiber-forming substance, as well as to the fibers made thereby, and to their use.

First claim

1 . A method for the production of a polysaccharide fiber whose fiber-forming substance is α(1→3)-glucan, wherein the method is a modified viscose process.

2 . The method according to claim 1 , wherein at least 90% of the α(1→3)-glucan are hexose units and at least 50% of the hexose units are linked via α(1→3)-glycosidic bonds.

3 . The method according to claim 1 or 2 , wherein the fiber is selected from the group consisting of a staple fiber and a continuous filament.

4 . The method according to claim 1 or 2 , wherein no more than 30% by weight of CS 2 , related to the fiber-forming substance, is used.

5 . A polysaccharide fiber whose fiber-forming substance is α(1→3)-glucan, wherein the polysaccharide fiber is produced using a modified vicose process.

6 . The fiber according to claim 5 , wherein at least 90% of the α(1→3)-glucan are hexose units and at least 50% of the hexose units are linked via α(1→3)-glycosidic bonds.

7 . The fiber according to claim 5 or 6 , wherein the fiber is selected from the group consisting of a staple fiber and a continuous filament.

8 . A textile product comprising the fiber according to claim 5 , wherein the textile product is selected from the group consisting of yarns, woven fabrics, and knitted fabrics.

9 . A product comprising the fiber as claimed in claim 5 , wherein the product is selected from the group consisting of nonwovens, hygiene articles, and of other, absorbent nonwoven products and papers.

10 . The textile product according to claim 8 wherein, the fiber is selected from a group consisting of a staple fiber and a continuous filament.

11 . A method according to claim 4 , wherein less than 25% by weight of CS 2 related to the fiber-forming substance is used.

12 . A method according to claim 11 , wherein less than 15% by weight of CS 2 , related to fiber-forming substance is used.

13 . The product according to claim 9 , wherein the hygiene products are selected from the group consisting of tampons, panty liners and diapers.

14 . The product according to claim 9 , wherein the fiber is selected from the group consisting of a staple fiber and a continuous filament.

Assignees

• Chemiefaser Lenzing Ag

Inventors

• Röder Thomas
• Kaindl Gernot
• Redlinger Sigrid
• Firgo Heinrich
• Kroner Gert

Classifications

• A61L15/28

  Polysaccharides or their derivatives {(A61L15/225 takes precedence)} · CPC title

• D01F2/06 Primary

  from viscose · CPC title

• C08L1/02

  Cellulose; Modified cellulose · CPC title

• D04H3/013

  Regenerated cellulose series · CPC title

• C08B37/0009

  alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof · CPC title