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:
Feb. 04, 1992
Filed:
Sep. 28, 1990
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A non-aqueous dispersing agent comprising a graft copolymer is characterized in that monomer(s) to constitute the graft portion(s) of the graft copolymer is (are) at least one or more macromonomers each having a terminal polymerizable functional group and that the graft copolymer is substantially soluble in a high electric-resistance non-aqueous solvent having a dielectric constant of 3 or less and a volume specific resistance of 10.sup.9 .OMEGA.cm of more. The dispersing agent may sufficiently disperse any of a colorant of pigment or dye, a fixing resin-coated colorant or a fixing resin itself by wet-dispersion, and it has an excellent storage stability. The agent is therefore useful in a liquid developer for electrostatic photography or in a liquid developer for preparing printing plates.