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:
Jul. 11, 1989
Filed:
Feb. 02, 1988
Martin F Schick, Kingsport, TN (US);
William C Hickman, Kingsport, TN (US);
Gary T Clark, Kingsport, TN (US);
Rebecca R Stockl, Kingsport, TN (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
Compositions useful as printing inks or as dry or wet concentrates for the preparation of inks, comprising substantially homogenous blends of from about 0.1 to about 50.0 wt. % water dispersible polyurethane, and conversely from about 99.9 to about 50.0 wt. % water dispersible polyester, and preferably containing from about 1.0 to about 95.0 wt. % of a solvent system comprising water or water admixed with cosolvent, the cosolvent comprising up to about 30.0 wt. % of the solvent system. These blends show exceptionally marked improvements in certain physical properties such as: stability of viscosity to ambient and process conditions; linearity of viscosity change with water dilution; consistency of viscosity for a great variety of pigments; and greatly improved shelf-life (no significant polymer segregation of layering). Such properties greatly enhance the utility of these blends for use in pigmented or dyed printing inks and in other substrate coating formulations which may or may not contain colorants. Also disclosed is a process useful for the preparation of such compositions.