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:
Oct. 12, 2021
Filed:
May. 29, 2018
Hubei Gurun Technology Co. Ltd, Hubei, CN;
Yulian Pang, Beijing, CN;
Yingquan Zou, Beijing, CN;
Shuheng Fan, Beijing, CN;
Ming Gao, Beijing, CN;
Yangyang Xin, Beijing, CN;
Hubei Gurun Technology Co., Ltd., Jingmen, CN;
Abstract
The present invention relates to a coumarin (keto) oxime ester compound of formula (I), wherein n and R, R, R, R, R, R, and Rare as defined in the specification. The compound has strong ultraviolet absorption in the range of 300 to 450 nm. After absorbing light energy, it can quickly transfer energy and continuously initiate polymerization. It has obvious advantages in terms of photosensitivity and pattern integrity, and is very suitable for radiation curing by UV-LED light source. In addition, the compound of formula (I) also has good thermal stability. The present invention also relates to a method for preparing the compound of formula (I) and use of the compound. The compound is suitable as a photoinitiator in a UV-LED light curing system and is suitable for the radiation wavelength of UV-LED light curing.