Method of indicating time or temperature-time accumulated value

Details Method of indicating time or temperature-time accumulated value Method of indicating time or temperature-time accumulated value

1996-03-27

1998-05-26

Soderquist, Arlen

Chemistry: analytical and immunological testing

Process or composition for determination of physical state...

By thermoparticulating composition

436 1, 436 2, 436164, 422 56, 422 57, 422 61, 422119, 116206, 374106, G01N 3100, G01N 2100, G01K 300

Patent

active

057563560

ABSTRACT:
A method of indicating a time or a temperature-time accumulated value as a color change (degree of color development), which comprises providing an oxidation-polymerizable dyestuff and the oxidizing agent in a non-contact state and bringing the oxidation-polymerizable dyestuff and the oxidizing agent into contact with each other to polymerize the oxidation-polymerizable dyestuff with the passage of time, and an indicator material therefor.

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