Compositions – Nonreactive analytical – testing – or indicating compositions
Patent
1977-07-19
1980-02-19
Padgett, Benjamin R.
Compositions
Nonreactive analytical, testing, or indicating compositions
73356, 116114AM, 116114V, 250474, 252300, 252600, 426 88, 116202, 116207, C09K 902
Patent
active
041893999
ABSTRACT:
A composition is described comprising at least two co-crystallized acetylenic compounds, of different chemical structures, each containing at least one --C.tbd.C--C.tbd.C-- group and substituents selected from the group consisting of sulfonate, urethane and alcohol radicals, at least one of the compounds capable of undergoing a contrasting color change upon exposure to actinic radiation or thermal annealing, wherein the composition exhibits a substantially different thermogram than the sum of thermograms of the individual components as obtained by differential scanning calorimetry.
A device is also described useful for measuring the time-temperature or radiation-dosage history of an article comprising a substrate having deposited thereon the described composition.
A process is also described for producing the composition of this invention.
REFERENCES:
patent: 3065283 (1962-11-01), Happel et al.
patent: 3501297 (1970-03-01), Cremeans
patent: 3501303 (1970-03-01), Foltz et al.
patent: 3501308 (1970-03-01), Adelman
patent: 3723121 (1973-03-01), Hauser
patent: 3811895 (1974-05-01), Ehrlich
patent: 3822134 (1974-07-01), Rasch et al.
patent: 3999946 (1976-12-01), Patel et al.
Allied Chemical Corporation
Fuchs Gerhard H,.
Kyle Deborah L.
North Robert J.
Padgett Benjamin R.
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