Bis (triaklyltrimellitic anhydride) derivative and polyesterimide for optical communications formed therefrom
US6031061A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1998 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Dec 31, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/123
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A bis(trisubstitutedtrimellitic anhydride) derivative and a polyesterimide for optical communications, the polyesterimide being formed therefrom. The polyesterimide has a high refractive index, so that when using such polyesterimide as a material for a core of an optical fiber, the range of materials that can be selected for the cladding becomes wide. Also, a coating property and adhesion to a substrate are improved, thereby providing a good film forming property and thermal stability. Also, because the polyesterimide can minimize optical loss at a near infrared wavelength range, the polyesterimide is very useful as an optical material in the optical communications field adopting the light of near infrared wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.