High luminance luminous fiber and process for producing the same
US6162539A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 23, 1999 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Aug 23, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2929
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A luminous fiber described below, which does not exert a harmful effect on human bodies and is capable of emitting light for a long period of time with a high luminance, and a process for producing the luminous fiber are provided. A high luminance luminous fiber comprising a core component containing a polyolefin resin and 10-60% by weight, relative to the core component, of a luminous pigment comprising sintered fine powders represented by the formula of EQU (M.sub.0.9995-0.998 Eu.sub.0.0005-0.002)Al.sub.2 O.sub.4.(M.sub.0.9995-0.998 Eu.sub.0.0005-0.002)O.n(Al.sub.1-b-a B.sub.b Q.sub.a).sub.2 O.sub.3, wherein M represents at least one element selected from the group consisting of Sr, Ca, Mg and Ba, Q represents at least one element selected from the group consisting of Y, lanthanoid elements, Mn and Bi, a is 0.0005-0.002, b is 0.001-0.35 and n is an integer of 1-8, and a sheath component comprising a polyolefin resin containing no luminous pigment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.