Compositions containing zirconium compounds
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United States of America Patent
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-
Jul 8, 1997
Grant Date -
N/A
app pub date -
Jun 20, 1995
filing date -
Jun 22, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A printing ink comprises a polymeric binder, a solvent and an adhesion promoting agent which is the reaction product of a zirconium orthoester and ethyl acetoacetate in which the molar ratio of zirconium to ethyl acetoacetate is from 1:1 to 1:4. Preferably, the inks are based on nitrocellulose or an ester type modified cellulose. The inks have been found to have adhesion and heat stability properties similar to inks containing titanium acetylacetonate but the zirconium additives have a much reduced tendency to discolor the ink.
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