Compositions – Nonreactive analytical – testing – or indicating compositions
Patent
1978-05-22
1979-12-18
Padgett, Benjamin R.
Compositions
Nonreactive analytical, testing, or indicating compositions
23230R, 73 73, 73 76, 73356, 106 22, 116206, 116207, 116216, 260 293, 260 324, 260 334R, 260 38, 422 26, 422 57, 422119, 528137, C09D 1110, C08L 6110, G01N 2106, G01N 3100, G01N 3122, G01N 3300, G01K 1116, C09K 300
Patent
active
041793978
ABSTRACT:
An ink composition is provided which is suitable for use on plastic, bare metal, for example, tinplate or aluminum as well as on such metals having organic coatings applied to surfaces thereof. The inks are suitable for use in contact printers or in jet ink printing techniques and apparatus. The ink compositions are thermotropic, i.e. they change color in the presence of water or steam at elevated temperature and are useful as sterilization or pasteurization indicators. The inks comprise essentially a binder resin component, or mixture of such resin components, an alcohol solvent and a combination of dyes which produce a visible and permanent color change in the presence of water or steam at elevated temperatures.
REFERENCES:
patent: 2798855 (1957-07-01), Hainsworth
patent: 2798856 (1957-07-01), Hainsworth
patent: 3078182 (1963-02-01), Crone, Jr. et al.
patent: 3098751 (1963-07-01), Huyck et al.
patent: 3288718 (1966-11-01), Carumpalos
patent: 3360337 (1967-12-01), Edenbaum
patent: 3386807 (1968-06-01), Edenbaum
patent: 3390121 (1968-06-01), Burford et al.
patent: 3523011 (1970-08-01), Bhiwandker
patent: 3667916 (1972-06-01), Silva et al.
patent: 3684737 (1972-08-01), Emigh
patent: 3704096 (1972-11-01), Verses
patent: 3862824 (1975-01-01), Chapman
patent: 3898172 (1975-08-01), Reif et al.
patent: 3905935 (1975-09-01), Irwin et al.
patent: 4021252 (1977-05-01), Banczak et al.
patent: 4024096 (1977-05-01), Wachtel
patent: 4045397 (1977-08-01), Parkinson
patent: 4070322 (1978-01-01), Hwang
Rohowetz Stanley E.
Schoenfisch Eric
American Can Company
Auber Robert P.
Bartlett Ernestine C.
Dorman Ira S.
Gron T. S.
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