Low-birefringent organic optical component and a spirobiindan polymer
US6080833A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1997 |
| Grant date | Jun 27, 2000 |
| Priority date | — |
| Expiry date | Jul 17, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/24304
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A low-birefringent organic optical component comprising a polymer prepared by polymerizing a racemic mixture of the monomer with an asymmetric spiro ring represented by general formula (1) as an essential ingredient; wherein ring A represents a monocyclic or polycyclic organic group, wherein two ring As are mutually bound each other via a spiro bond to form a spiro ring which has a molecular asymmetric structure; n is an integer of 0 to 10; X.sub.1 and Y.sub.1 are binding groups; and Z.sub.1 is a polymerization-active group. The component has excellent transparency, mechanical strength and heat resistance, as well as a low birefringence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.