Copolymers for optical fibers
US4566755A · kind A · utility
13Cited by
4References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1984 |
| Grant date | Jan 28, 1986 |
| Priority date | — |
| Expiry date | Oct 4, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/05
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A copolymer for optical fibers of fluoroalkylmethacrylate and methacrylic acid, the fluoroalkylmethacrylate having such properties that a homopolymer made of only the fluoroalkylmethacrylate has a glass transition temperature and a refractive index each in the range given by the following formulae (I) and (II), respectively: EQU (1/Tg).ltoreq.9.47.times.10.sup.-3 -4.556.times.10.sup.-3 n.sup.20 (I) EQU n.sup.20 .ltoreq.1.42 (II) wherein Tg represents the glass transition temperature (.degree.K.) of the homopolymer and n.sup.20 represents the refractive index thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.