Solution-dyed protein fiber and method for producing same
US9689089B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2013 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Apr 26, 2033 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F4/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A solution-dyed protein fiber of the present invention includes 0-100 mass % of silk fibroin and 100-0 mass % of a polypeptide derived from spider silk proteins when the protein fiber is assumed to be 100 mass %, wherein the solution-dyed protein fiber contains a solution-dyeing colorant. The fiber is obtained by: dissolving or dispersing a solution-dyeing colorant in a solvent used for a spinning solution or in dimethyl sulfoxide, thereby preparing a coloring liquid; adding a solvent to the coloring liquid in an amount necessary for a spinning solution; adding and dissolving protein powder into the solvent, thereby preparing a spinning solution; and subjecting the spinning solution to wet spinning or dry-wet spinning. Thereby, the present invention provides a low-cost solution-dyed protein fiber in which a solution-dyeing colorant is dispersed uniformly and that can exhibit bright color tone, and a method for producing the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.