	US 11,753,498 B2
	Mechanophore-grafted polymers to form stress-responsive thermoset network
Lenore Dai, Phoenix, AZ (US); Aditi Chattopadhyay, Chandler, AZ (US); Elizabeth Nofen, Phoenix, AZ (US); Jin Zou, San Diego, CA (US); and Bonsung Koo, Tempe, AZ (US)
Assigned to ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY, Scottsdale, AZ (US)
Filed by Lenore Dai, Phoenix, AZ (US); Aditi Chattopadhyay, Chandler, AZ (US); Elizabeth Nofen, Phoenix, AZ (US); Jin Zou, San Diego, CA (US); and Bonsung Koo, Tempe, AZ (US)
Filed on May 24, 2021, as Appl. No. 17/328,490.
Application 17/328,490 is a division of application No. 16/349,221, granted, now 11,034,791, previously published as PCT/US2017/067746, filed on Dec. 20, 2017.
Claims priority of provisional application 62/436,950, filed on Dec. 20, 2016.
Prior Publication US 2021/0277172 A1, Sep. 9, 2021
Int. Cl. C08G 59/14 (2006.01); C08G 59/50 (2006.01); C08K 5/20 (2006.01); C08L 63/00 (2006.01); G01L 1/24 (2006.01)

CPC C08G 59/1477 (2013.01) [C08G 59/5006 (2013.01); C08K 5/20 (2013.01); C08L 63/00 (2013.01); G01L 1/241 (2013.01)]

7 Claims

1. A method of making a composition, the method comprising:

preparing a mixture comprising a thermosetting polymer network precursor, a mechanophore precursor, and a solvent, wherein the mechanophore precursor comprises cinnamamide;

reacting the mixture to provide an intermediate composition;

removing the solvent from the intermediate composition; and

adding a polyfunctional hardener to the intermediate composition to provide a composition comprising a thermosetting polymer network and a mechanophore covalently bonded to the thermosetting polymer network,

wherein the polyfunctional hardener is selected from the group consisting of a polyfunctional amine, a cyclic anhydride, a polyphenol, a polyfunctional alcohol, and a polyfunctional thiol.