Patent · US Active

Polycarbonate resin composition, production method therefor, and optical lens

US11440991B2 · kind B2 · utility

0Cited by

0References

13Claims

0Family size

Assignee

Mitsubishi Gas Chemical Company, Inc. · JP

Inventors

Munenori Shiratake · Tokyo, JP
Kentaro Ishihara · Tokyo, JP
Koji Hirose · Tokyo, JP
Shinya Ikeda · Tokyo, JP
Noriyuki Kato · Nara, JP
Mitsuteru Kondo · Tokyo, JP
Shoko SUZUKI · Tokyo, JP
Kensuke Oshima · Tokyo, JP
Shuya Nagayama · Nagasaki, JP

Key dates

Filing date	Jan 18, 2019
Grant date	Sep 13, 2022
Priority date	—
Expiry date	Jul 23, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2203/30
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present application provides a polycarbonate resin composition which has a high refractive index and a low Abbe number, and high thermal stability. The polycarbonate resin composition according to one embodiment of the present application includes a polycarbonate resin and an antioxidant, wherein the polycarbonate resin contains a constituent unit represented by general formula (1) (in general formula (1), X represents an alkylene group having 1-4 carbon atoms, and a and b each independently represent an integer of 1-10), and the antioxidant content is 1-3000 ppm.

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