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:
Aug. 18, 1998
Filed:
Mar. 20, 1997
Yutaka Adegawa, Minami-ashigara, JP;
Kentaro Shiratsuchi, Minami-ashigara, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
There is disclosed a particulate photographic polymer, which at least comprises a repeating unit of the formula (I): ##STR1## wherein R is an alkyl group, a phenyl group, or a hydrogen atom; L is a divalent organic binding group; A is a repeating unit derived from at least one ethylenically unsaturated monomer, or a repeating unit derived by ring opening polymerization of a nitrogen-containing heterocyclic compound, with --(A).sub.m -- being soluble in water or a hydrophilic organic liquid; m is from 2 to 200; and Y is a monovalent binding group. The polymer is excellent in dispersion stability in coating solutions, prevents settling and agglomeratingis and the formation of mat pinholes, and can improve granularity of images.