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. 18, 1976
Filed:
Apr. 10, 1974
Applicant:
Inventors:
Thomas Stauner, Marly, CH;
Rainer Kitzing, Villars S. Glane, CH;
Remon Hagen, Marly, CH;
Carlo Boragine, Fribourg, CH;
Assignee:
Ciba-Geigy AG, Basel, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427333 ; 96111 ; 961148 ; 427407 ; 427414 ; 427415 ;
Abstract
The present invention relates a process for crosslinking hydrophilic colloids, especially gelatine. The colloid is crosslinked with a water-soluble organic crosslinking agent which is allowed to act in a system consisting of at least two colloid layers. At least one layer contains the crosslinking agent and at least one layer which is free from crosslinking agents contains an aprotic solvent.