Bis(dialkylmaleimide) derivative and polyetherimide for optical communications formed therefrom
US6077928A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1998 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Dec 30, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12069
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A bis(disubstitutedmaleimide) derivative and a polyetherimide for optical communications and the polyetherimide formed therefrom are described. The polyetherimde has a high refractive index, so that when using such polyetherimide as a material for a core of an optical fiber, the range of the 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 polyetherimide can minimize optical loss at a near infrared wavelength range, the polyetherimide 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.