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:
May. 13, 1980
Filed:
Dec. 15, 1977
Applicant:
Inventor:
Klaus Thoese, Wiesbaden, DE;
Assignee:
Hoechst Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428144 ; 428145 ; 428482 ; 428483 ; 428412 ; 428510 ; 428575 ;
Abstract
This invention relates to an improvement in a drawing layer for a plastic film, in particular for a polyester film, said drawing layer being adherent to the film and comprising a cellulose ester crosslinked by a formaldehyde resin, and including a matt-finishing agent and/or a pigment, the improvement which comprises that the drawing layer additionally contains at least one copolymer containing maleic anhydride units.