C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/5503
C08L 75/04 (2006.01) C08L 67/00 (2006.01) C09D 11/10 (2006.01) C09D 167/00 (2006.01) C09D 175/04 (2006.01)
Patent
CA 1326313
Abstract of the Disclosure 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 or 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.
564264
Clark Gary Thomas
Hickman William Chris
Schick Martin Frederick
Stockl Hazel Rebecca Reid
Clark Gary Thomas
Eastman Chemical Company
Gowling Lafleur Henderson Llp
Hickman William Chris
Schick Martin Frederick
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