C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
8/11, 6/23
C09D 11/00 (2006.01)
Patent
CA 1319795
A B S T R A C T The composition is suitable for ink jet printing operations and comprises a combination of at least one heat-resistant and at least one heat-sensitive dye. The heat sensitive dye is one capable of undergoing decomposition upon exposure to an elevated temperature for a period of time so that the color of` the ink changes to that of the heat resistant dye. The compositions are particularly useful as sterilization and/or thermal exposure indicators.
564801
Elue Paul N.
Lent Bruce A.
Marconi Data Systems Inc.
Ogilvy Renault
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