The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 02, 2024
Filed:
Jul. 20, 2020
Wanhua Chemical Group Co., Ltd., Shangdong, CN;
Wanhua Chemical (Ningbo) Co., Ltd., Zhejiang, CN;
Jianfeng Li, Shangdong, CN;
Yonghua Shang, Shangdong, CN;
Qian Wu, Shangdong, CN;
Fulin Zhu, Shangdong, CN;
Peng Wang, Shangdong, CN;
Hao Chen, Shangdong, CN;
Peimeng Shi, Shangdong, CN;
Weiqi Hua, Shangdong, CN;
Yuan Li, Shangdong, CN;
WANHUA CHEMICAL GROUP CO., LTD., Shangdong, CN;
WANHUA CHEMICAL (NINGBO) CO., LTD., Zhejiang, CN;
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.