Patent · US Active

Preparation method for polyurethane optical resin and applications thereof

US12024582B2 · kind B2 · utility

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2References

5Claims

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Inventors

Jianfeng Li · Qingdao, CN
Yonghua Shang · Yantai, CN
Qian Wu · San Jose, US
Fulin ZHU · Shandong, CN
Peng Wang · Beijing, CN
Hao Chen · 流花街道, CN
Peimeng SHI · Shangdong, CN
Weiqi Hua · Yantai, CN
Yuan Li · Shandong, CN

Key dates

Filing date	Jul 20, 2020
Grant date	Jul 2, 2024
Priority date	—
Expiry date	Aug 12, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG02B1/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Preparation method for a polyurethane optical resin and applications thereof. The preparation method for the polyurethane optical resin comprises: a raw material composition comprising isocyanate and a polythiol compound undergoes a polymerization to produce the polyurethane optical resin. The turbidity value of the isocyanate used in the raw material composition is controlled at ≤2 NTU. The polyurethane optical resin produced is applicable in manufacturing optical products.

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