Water-dissipatable polyesters and amides containing near infrare

Details Water-dissipatable polyesters and amides containing near infrare Water-dissipatable polyesters and amides containing near infrare

1993-02-18

1994-03-08

Acquah, Samuel A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528 26, 528 28, 528 29, 528 30, 528 40, 528 42, 528 43, 528272, 528275, 528278, 528279, 528280, 528281, 528282, 528283, 528284, 528285, 528290, 528293, 528295, 528298, 528299, 528300, 528301, 528302, 528303, 528307, 528308, 5283086, 528392, 528395, 528422, 25230116, 25230135, C08G 6344

Patent

active

052928551

ABSTRACT:
Provided are water-dissipatable, sulfo-containing polyesters and polyester-amides having copolymerized therein thermally stable near infrared flourophoric compounds. The polymers are useful in coating or ink compositions, which are in turn useful for marking articles for identification/authentication purposes. Also provided is a method for invisibly marking such articles and a method for detecting and sorting articles by utilizing the near infrared flourophoric ink or coating compositions.

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