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:
Sep. 07, 1999
Filed:
Sep. 16, 1997
Applicant:
Inventors:
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03F / ; G03F / ;
U.S. Cl.
CPC ...
4302731 ;
Abstract
Photopolymerizable printing plates with an improved resistance to UV-hardenable printing inks, have an elastomeric layer containing at least one thermoplastic, elastomeric, block copolymer comprising two or more polymer blocks comprising aromatic vinyl units, and one or more polymer blocks comprising isoprene and/or isoprene/butadiene units. The block copolymer has a vinyl bond content not above 70%, a glass transition temperature not above 20.degree. C., and a peak temperature of a primary dispersion of tan .delta. not above 30.degree. C.