Achromatic Image Forming Organic Compound Patents (Class 430/565)
  • Method for dispersing oil-soluble photographic additives
    Patent number: 4211836
    Abstract: A method for dispersing oil-soluble photographic additives into a hydrophilic colloid composition is disclosed characterized by the use of lecithin in conjunction with an anionic surface active agent containing an --SO.sub.3 M or --OSO.sub.3 M moiety wherein M represents a cation and a hydrophobic group having 8 to 30 carbon atoms.
    Type: Grant
    Filed: January 18, 1979
    Date of Patent: July 8, 1980
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masakazu Yoneyama, Yasuo Mukunoki, Takeshi Mikami, Jun Sasaki