Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1978-05-30
1979-05-22
Schulz, William E.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
106 145, 106 21, 106 22, 252408, 422 57, C08R 505, C08R 513
Patent
active
041558952
ABSTRACT:
An ink composition is provided which is suitable for use on bare metal, for example, tinplate or aluminum as well as on such metals having organic coatings applied to surfaces thereof. The compositions may also be used on plastic containers or retortable pouches comprising plastic or plastic-metal foil laminates. The inks are suitable for use in contact printers or in jet ink printing techniques. The ink compositions are thermotropic, i.e. they change color in the presence of steam at elevated temperature and are useful as sterilization indicators. The inks comprise essentially a binder resin component, an alcohol solvent and a colorant which reacts in the presence of steam at elevated temperature to produce a visible and permanent color change.
REFERENCES:
patent: 1271393 (1918-07-01), Voorhocet
patent: 2606654 (1952-08-01), Davis et al.
patent: 4015937 (1977-04-01), Miyamoto et al.
patent: 4021252 (1977-05-01), Banczak et al.
patent: 4024096 (1977-05-01), Wachtel
patent: 4042545 (1977-08-01), DeFago et al.
patent: 4045397 (1977-08-01), Parkinson
Murray Lee J.
Rohowetz Stanley E.
Specht James D.
American Can Company
Auber Robert P.
Bartlett Ernestine C.
Dorman Ira S.
Schulz William E.
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