Method of making synthetic fibers containing photochromic pigment
US5213733A · kind A · utility
7Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1991 |
| Grant date | May 25, 1993 |
| Priority date | — |
| Expiry date | Jun 3, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Synthetic textiles containing a photochromic pigment. The pigments are prepared by encapsulating a photochromic pigment in a thermoplastic polymer having a high melt flow index, mixed with a primary thermoplastic resin, and extruded at a temperature of less than 250.degree. C. through a spinnerette having a diameter of at least 0.3 ml.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.