Method for the production of polysaccharide fibers with an increased fibrillation tendency
US-10030323-B2 · Jul 24, 2018 · US
Polysaccharide fibers and method for producing same
US10196758B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10196758-B2 |
| Application number | US-201414899225-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 13, 2014 |
| Priority date | Jun 18, 2013 |
| Publication date | Feb 5, 2019 |
| Grant date | Feb 5, 2019 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The present invention relates to a direct dissolving process for the production of polysaccharide fibers which contain α(1→3)-glucan as a fiber-forming substance, with aqueous sodium hydroxide solution as a solvent, as well as to the fibers made thereby, and to their use.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for the production of a polysaccharide fiber whose fiber-forming substance is α(1→3)-glucan, wherein the method is a direct dissolving process which comprises the step of spinning the fiber by extruding a spinning solution comprising between 4.5% and 12% by weight of the fiber forming substance and an aqueous sodium hydroxide solution, wherein the spinning occurs in a spin bath comprising sulfuric acid, and wherein a spun fiber is formed. 2. The method according to claim 1 , wherein the aqueous sodium hydroxide solution concentration in the spinning solution is between 4.0 and 5.5% by weight related to the total quantity of the spinning solution. 3. The method according to claim 1 , wherein the spin bath comprises H 2 SO 4 in a concentration between 200 and 500 g/l. 4. The method according to claim 1 , wherein the spin bath comprises H 2 SO 4 in a concentration between 20 and 60 g/l. 5. The method according to claim 1 , wherein the spun fiber is subsequently stretched in an acid regeneration bath. 6. 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. 7. The method according to claim 1 , 2 , 3 , 4 , 5 , or 6 , wherein the fiber is selected from the group consisting of a staple fiber and a continuous filament.
Assignees
Inventors
Classifications
Regenerated cellulose series · CPC title
Polysaccharides or their derivatives {(A61L15/225 takes precedence)} · CPC title
- D01D5/06Primary
Wet spinning methods {(D01D5/0046 takes precedence)} · CPC title
Filamentary, e.g. strands · CPC title
characterised by the choice of material · CPC title
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Frequently asked questions
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- What does patent US10196758B2 cover?
- The present invention relates to a direct dissolving process for the production of polysaccharide fibers which contain α(1→3)-glucan as a fiber-forming substance, with aqueous sodium hydroxide solution as a solvent, as well as to the fibers made thereby, and to their use.
- Who is the assignee on this patent?
- Chemiefaser Lenzing Ag, Chemiefaser Lenzing Ag
- What technology area does this patent fall under?
- Primary CPC classification D01D5/06. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Feb 05 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 11 related publications on this page (citations in our corpus or others sharing the same primary CPC).