US 12,441,904 B2
Curable carbon nanotube ink and transparent conductive films created using the ink
Ziyi Hu, Acton, MA (US); Robert F. Praino, Westwood, MA (US); David J. Arthur, Braintree, MA (US); and John H. Ferguson, Attleboro, MA (US)
Assigned to Chasm Advanced Materials, Inc., Canton, MA (US)
Filed by CHASM ADVANCED MATERIALS, INC, Canton, MA (US)
Filed on Apr. 10, 2023, as Appl. No. 18/132,770.
Application 18/132,770 is a continuation of application No. PCT/US2021/054845, filed on Oct. 13, 2021.
Claims priority of provisional application 63/090,958, filed on Oct. 13, 2020.
Prior Publication US 2023/0265307 A1, Aug. 24, 2023
Int. Cl. C09D 11/52 (2014.01); C09D 11/037 (2014.01); C09D 11/101 (2014.01); C09D 11/104 (2014.01); C09D 11/107 (2014.01); H01B 5/14 (2006.01)
CPC C09D 11/52 (2013.01) [C09D 11/037 (2013.01); C09D 11/101 (2013.01); C09D 11/104 (2013.01); C09D 11/107 (2013.01); H01B 5/14 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A curable electrically conductive screen printable carbon nanotube ink that is configured to be screen printed on a substrate, and then cured to coat the substrate, comprising:
a curable resin binder;
a catalyst that is configured to be activated and cure the curable resin binder;
an evaporative amine-acid adduct viscous to vapor diluent that increases the viscosity of the ink and is configured to fully evaporate during curing of the curable carbon nanotube ink that occurs after the ink has been applied to the substrate; and
carbon nanotubes (CNTs);
wherein the CNT concentration range in the curable carbon nanotube ink is from about 0.001% to about 0.1% by weight, wherein the concentration range of the evaporative amine-acid adduct viscous to vapor diluent in the curable nanotube ink is from about 90% to about 99% by weight, wherein a weight ratio of carbon nanotubes to curable resin binder in the curable carbon nanotube ink is from 1:120 to 1:1,200, and wherein the curable carbon nanotube ink has a viscosity of from about 1,000 cP to about 50,000 cP that is sufficient to allow the ink to be screen printed on the substrate.