Cladding material for optical fiber
US4836642A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1988 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Jul 29, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2947
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cladding material for an optical fiber is described, which is made of a polymer comprised of (A) 10-90 wt. % of a long-chain fluoroalkyl group-containing monomer of the formula: ##STR1## wherein F is F, CH.sub.3 or CF.sub.3, and n is an integer from 5 to 11, (B) 5-90 wt. % of a short-chain fluoroalkyl group-containing monomer of the formula: ##STR2## wherein Y is as defined above, X is F, CH.sub.3 or CF.sub.3, and m is an integer of from 1 to 4, and (C) 0-50 wt. % of other copolymerizable monomer. The melt flow index indicating the amount in gram of the polymer extruded for 10 minutes from a nozzle with an orifice having an inner diameter of 2 mm and a length of 8 mm under the conditions of a temperature of 230.degree. C. and a load of 5 kg, is not larger than 30.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.