Patent · US Active

Polycarbonate resin compositions with consistent color and stable blue-cut performance

US11505675B2 · kind B2 · utility

0Cited by

2References

13Claims

0Family size

Assignee

Essilor International · FR

Inventors

Hao-Wen Chiu · Palm Harbor, US
Elliot FRENCH · Dallas, US
Aref Jallouli · Midland, US
Haifeng Shan · Dallas, US

Key dates

Filing date	Sep 20, 2017
Grant date	Nov 22, 2022
Priority date	—
Expiry date	Nov 22, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG02C7/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Embodiments of the disclosure relate to a series of PC resin additives for maintaining the color stability and blue-cut performance during injection molding. The additives may be used to adapt a PC resin customarily used for sun protection lenses for clear lens applications.

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