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:
Jan. 29, 1980
Filed:
Jul. 11, 1977
Applicant:
Inventors:
Peter Bergthaller, Cologne, DE;
Wulf von Bonin, Leverkusen, DE;
Gunter Helling, Siegburg, DE;
Paul Marx, Leverkusen, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; C08F / ; B44D / ;
U.S. Cl.
CPC ...
430213 ; 428423 ; 428425 ;
Abstract
A suitable mordanting polymer for the image receiving layer in a color photographic material for the dye diffusion transfer process is a water-soluble cationic polymer containing glycidyl groups. Such polymers can be made by quaternizing a basic polyurethane, polyurea or polyurea polyurethane of the formula ##STR1## with a quaternizing agent capable of introducing glycidyl groups. The recurring unit contains a quaternizable tertiary amino group, and the recurring unit B is derived from a bis-chloroformate or a diisocyanate.