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:
Nov. 16, 1999
Filed:
Dec. 04, 1997
Applicant:
Inventors:
Cornell Chappell, Jr, Petersburg, VA (US);
Junaid A Siddiqui, Richmond, VA (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
428336 ; 428480 ; 428483 ; 428910 ; 4286 / ; 427322 ; 427331 ; 4274071 ; 528293 ; 528295 ; 526167 ; 526174 ; 2642893 ; 2642896 ; 2642902 ;
Abstract
An oriented polyester film coated on at least one surface with a coating that improves its adhesion to water-based coatings is disclosed. The coating contains at least one sulfopolyester; at least one tetrablock copolymer resin; and at least one acrylamide/acrylic acid copolymer or salts thereof. Other ingredients, such as particulate materials and surfactants, may be present in the coating. The coating is preferably applied at the interdraw stage.