Patent ID: 9057095
Filing Date: 2015-06-16
Classification: C12Q,G01N

Abstract:
1. A method for detecting the presence of amine blush in an amine-cured epoxy material, said method comprising the steps of: a. Collecting, in an aqueous solution, carbamates from said material, said aqueous solution being a test sample, said aqueous solution being a solution comprising water; b. Adding an enzyme whose activity is inhibited by carbamates to the test sample; c. Adding a substrate for said enzyme to the test sample such that cleavage of the substrate by the enzyme will result in either a modified substrate or a substrate cleavage product; d. Adding a chromogen to the test sample, such that said chromogen reacts with either the modified substrate or the substrate cleavage product so as to alter or intensify the color of the test sample; e. Subsequent to the foregoing steps (a), (b), (c), and (d) determining the intensity of the color of the test sample; f. Wherein the smaller the intensity of the color in the test sample, the greater the probability that the test sample suffers from amine blush.