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. 17, 1993
Filed:
Apr. 13, 1992
Applicant:
Inventor:
William K Smothers, Hockessin, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F / ; G03F / ;
U.S. Cl.
CPC ...
430281 ; 430-2 ; 430915 ; 430920 ; 430924 ; 430926 ; 522 14 ; 522 16 ; 522 25 ; 522 26 ;
Abstract
Photopolymerizable compositions containing photoinitiator systems that absorb in the visible are disclosed. The photoinitiator system comprises a sensitizer which is a compound of the structure I: ##STR1## wherein R.sub.2 and R.sub.3 are alike or different and are selected from the group consisting of II and III: ##STR2##