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:
Jan. 23, 2007
Filed:
Apr. 03, 2003
Artur Lachowicz, Berlin, DE;
Kai-uwe Gaudl, Hohen Neuendorf, DE;
Jens Ferbitz, Berlin, DE;
Gerwald F. Grahe, Berlin, DE;
Yu Jing, Qingdao, CN;
Wu Guanghui, Qingdao, CN;
Artur Lachowicz, Berlin, DE;
Kai-Uwe Gaudl, Hohen Neuendorf, DE;
Jens Ferbitz, Berlin, DE;
Gerwald F. Grahe, Berlin, DE;
Yu Jing, Qingdao, CN;
Wu Guanghui, Qingdao, CN;
Dainippon Ink and Chemicals, Inc., Tokyo, JP;
Abstract
A photoinitiator is provided which exhibits excellent photosensitivity, yields colorless products, and is usable in thick layer UV curable coating. A novel chemical compound is also provided which is usable for the photoinitator. Photocurable composition is also provided which has these properties. The photoinitiator consists essentially of a compound having a molecular weight of 1000 or less, and having a chemical structure represented by the following formula (1), wherein Rand Rindependently denote a specific alkyl group, and Rand Rindependently denote an electron attracting group or a specific alkyl group, and weight percentage of a chemical structure element represented by the following formula (2), which is expressed in formula (1) based on the total molecular weight of the compound, is 17% to 54% by mass.