Polyamideimide for optical communications and method for preparing the same
US6028159A · kind A · utility
2Cited by
6References
14Claims
0Family size
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Key dates
| Filing date | Dec 31, 1998 |
| Grant date | Feb 22, 2000 |
| Priority date | — |
| Expiry date | Dec 31, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02033
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyamideimide for optical communications, having a minimum light absorption loss in a near infrared light wavelength range, high thermal stability and excellent film processibility, and a method for preparing the same are provided. The polyamideimide has a higher refractive index than the conventional fluorinated polyamideimide. Thus, when using such polyamideimide as a material for a core of an optical fiber, the selection range on the material for cladding becomes wide. Also the coating property and adhesiveness to a substrate are improved, thereby providing a good film processibility and heat resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.