Thermochromic acrylic synthetic fiber, its processed article, and process for producing thermochromic acrylic synthetic fiber
US6444313B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2001 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Jan 5, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2984
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermochromic acrylic synthetic fiber comprising an acrylonitrile polymer in which a thermochromic pigment composition with an average particle diameter of from 0.5 &mgr;m to 30 &mgr;m is dispersedly contained in an amount of from 0.5% by weight to 40% by weight based on the weight of the polymer, and being made into fibers; the pigment composition containing (a) an electron-donating color-developing organic compound, (b) an electron-accepting compound and (c) a reaction medium that determines the temperature at which the color-developing reaction of the both compounds takes place.Also disclosed are a processed article of the above thermochromic acrylic synthetic fiber, and a process for producing the thermochromic acrylic synthetic fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.