Patent · US Active

Polycarbonate with high refractive index

US7642335B2 · kind B2 · utility

5Cited by

4References

20Claims

0Family size

Assignee

Sabic Innovative Plastics B.V. · NL

Inventors

Subash Scindia · Bengaluru, IN
Subarna Shyamroy · Sherghati, IN

Key dates

Filing date	Jul 30, 2007
Grant date	Jan 5, 2010
Priority date	—
Expiry date	Jul 30, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31507
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

An aromatic polycarbonate having a high refractive index and good processing and mechanical properties is provided. The aromatic polycarbonate comprises a thiodiphenol monomer and a biphenyl monomer. The refractive index of the polycarbonate may be greater than 1.670.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.