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. 02, 2005
Filed:
Mar. 07, 2003
Kai-uwe Gaudl, Hohen Neuendorf, DE;
Artur Lachowicz, Berlin, DE;
Ken-ichi Yatsugi, Tokyo, JP;
Gerwald F. Grahe, Berlin, DE;
Kai-Uwe Gaudl, Hohen Neuendorf, DE;
Artur Lachowicz, Berlin, DE;
Ken-ichi Yatsugi, Tokyo, JP;
Gerwald F. Grahe, Berlin, DE;
Dainippon Ink and Chemicals, Inc., Tokyo, JP;
Abstract
A photocurable composition is provided which yields an excellent tack-free, hard cured product without any addition of photoinitiators. A photocurable composition which is excellent in storage stability is also provided. The photocurable composition contains a resin having an acryloyl group and a chemical structure element selected from the group consisting of β-diketone groups and β-ketoester groups, wherein the β-diketone group or the β-ketoester group has a tetra-substituted carbon atom between two carbonyl groups, which is capable of generating one or two free radicals under photoirradiation, and the photocurable composition does not increase more than 25% in viscosity when heated at 60° C. for 5 days.