Color changing two-part system and method of determining the curing of an adhesive

摘要

A two-part system wherein the first part includes (i) at least one curable component; (ii) at least one reducing agent; and (iii) at least one initially colorless color change additive and the second part includes a peroxide oxidizing agent. When the first and second parts are mixed, the resulting curing material turns a color that is different than the initial color of the first and second parts individually. This color change can be used to indicate working time for the material.