Photographic element with cellulose derivative polymer

A photographic element comprising a support having thereon at least one layer comprising a polymer obtained by copolymerizing a repeating unit represented by the following general formula (I) and a copolymerizable oil-soluble cellulose derivative represented by the following general formula (II),

• --A).sub.x (B).sub.y (I)
• wherein A represents a repeating unit derived from an ethylenically unsaturated monomer having --COOH group, --SO.sub.3 H group or --PO(OH).sub.2 group in the molecular structure;
• and B represents a repeating unit derived from a copolymerizable ethylenically unsaturated monomer;
• ##STR36## wherein (R.sup.1)s each independently represents (i) a hydrogen atom, (ii) a monovalent organic bonding group selected from the group consisting of an ester group and an ether group or (iii) a monovalent organic bonding group represented by the following general formula (III), with the provisos that (R.sup.1)s do not represent all hydrogen atom at the same time and at least one R.sup.1 is represented by formula (III);
• and n represents a number of 20 to 800;
• ##STR37## wherein R.sup.2 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms;
• and L represents a bivalent organic bonding group, and wherein the percentage by weight of the component represented by general formula (I) in the copolymer is from 5 to 95;
• the percentage by weight of the component represented by general formula (III) based on the weight of the component represented by general formula (II) is from 0.00001 to 10;
• x and y each represents the percentage by weight of each monomer component in the copolymer, and x is in the range of 1 to 95 and y is in the range of 5 to 99.