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. 22, 1984
Filed:
Oct. 18, 1982
Gerolamo Delfino, Savona, IT;
Simone Franco, Ferrania/Savona, IT;
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
Photographic elements, comprising a support, at least a light-sensitive silver halide emulsion layer and an external non light-sensitive gelatin protective layer, have the surface delustered by the presence in the external protective layer of water-soluble vinyl polymers which contain, as pendant groups, methylolamide moieties. Preferably said water-soluble vinyl polymers are polymethylolacrylamide and copolymers of methylolacrylamide and other unsaturated vinyl monomers, such as ethylacrylate, acrylamide, acrylic acid, ethylvinylether and butylvinylether, said copolymers containing at least 50% by weight of unities derived from the vinyl monomer containing the methylolamide moiety.