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:
Aug. 23, 2022
Filed:
May. 15, 2018
Kawasaki Kasei Chemicals Ltd., Kawasaki, JP;
Akihiko Yamada, Kawasaki, JP;
Shuji Yokoyama, Kawasaki, JP;
Shigeaki Numata, Kawasaki, JP;
Tatsuki Takeuchi, Kawasaki, JP;
Kawasaki Kasei Chemicals Ltd., Kawasaki, JP;
Abstract
To provide a photopolymerization sensitizer which will not cause problems of dusting or coloring of a cured product by bleeding of additives such as the photopolymerization sensitizer on the surface e.g. by blooming at the time of photo-curing or during storage of the cured product, and which imparts a practically sufficient photo-curing rate. An oligomer of a 9,10-bis(substituted oxy)anthracene compound having repeating units represented by the following formula (1): wherein n represents a repetition number and is from 2 to 50, each of X and Y which may be the same or different, is a hydrogen atom, a Calkyl group or a halogen atom, and A is a bivalent substituent.