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:
Oct. 13, 1998
Filed:
Sep. 30, 1996
Applicant:
Inventors:
Carl Michael Hesler, New Egypt, NJ (US);
Ethan Scott Simon, Ambler, PA (US);
Assignee:
Rohm and Haas Company, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D / ;
U.S. Cl.
CPC ...
523161 ; 106 3157 ; 106 3158 ; 106 3159 ; 106 3185 ; 106 3186 ; 106 3187 ;
Abstract
An ink composition and a method for preparing the ink composition are disclosed. The ink composition provides stability, bleed resistance and lightfastness without requiring the use of a cosolvent. The composition is based on a polymeric dispersant which is compatible with the hydrophobic surfaces of many pigments and which forms a stable dispersion of pigment in an aqueous environment. The ink composition is useful for organic and inorganic pigments.