Title: Process for producing chain propagation water soluble gelatine, gelatine produced with the same method and silver halide photographic sensitive material containing the same gelatine
Application Number: 01109253 Application Date: 2001.02.26
Publication Number: 1310217 Publication Date: 2001.08.29
Approval Pub. Date: 2005.10.26 Granted Pub. Date: 2005.10.26
International Classifi-cation: C09H5/00;G03C1/047
Applicant(s) Name: Fuji Photo Film Co., Ltd. Address:
Inventor(s) Name: Kawamoto Hiroyuki;Sasaki Hiroki;Uchida Minoru
Attorney & Agent: guo xiaodong
Abstract:
    Disclosed is a method of producing a water-soluble chain-extended gelatin subjecting a source a source gelatin having a first isoelectric point, in aqueous solution, to a partial crosslinking reaction to form a reaction mixture comprising a partially crosslinked gelatin having a second isoelectric point, filtering the reaction mixture, adjusting a pH value of the filtered reaction mixture to a value equivalent to the second isoelectric point -1.5, and concentrating, drying and pulverizing the pH-adjusted reaction mixture. The invention also relates to a gelatin produced by the method, and silver halide photographic light-sensitive material containing the gelatinsilver halide photographic light-sensitive material.
Time: 19