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:
Jun. 17, 2003
Filed:
Jan. 20, 1998
Applicant:
Inventors:
Ursula Kraska, Weiterstadt, DE;
Reimund Simon, Birstein, DE;
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C 1/73 ; G03C 1/76 ; G03F 7/028 ; G03F 7/032 ; C08F 2/48 ;
U.S. Cl.
CPC ...
G03C 1/73 ; G03C 1/76 ; G03F 7/028 ; G03F 7/032 ; C08F 2/48 ;
Abstract
A photopolymerizable composition for the preparation of flexographic printing forms for corrugated board direct printing comprising a radial (polystyrene-polybutadiene) X block copolymer, with X=Sn or Si and n=2 or 4, with an average molecular weight (M ) of 80,000-300,000, a molecular weight distribution (M /M ) of 1.00-1.40, a content of di- block copolymers of less than 15% by weight, which is extended with up to 50% by weight of a paraffinic oil.