US 11,746,245 B2
Soluble corrosion resistant sol-gel
Waynie M. Schuette, Troy, IL (US); Patrick J. Kinlen, Fenton, MO (US); and Paul Andrew White, Melbourne (AU)
Assigned to THE BOEING COMPANY, Arlington, VA (US)
Filed by THE BOEING COMPANY, Chicago, IL (US); and Commonwealth Scientific and Industrial Research Organisation, Canberra (AU)
Filed on Jan. 18, 2019, as Appl. No. 16/252,387.
Claims priority of provisional application 62/625,785, filed on Feb. 2, 2018.
Prior Publication US 2019/0241752 A1, Aug. 8, 2019
Int. Cl. C09D 183/14 (2006.01); C09D 5/08 (2006.01); C08G 77/58 (2006.01); C09D 7/60 (2018.01); C08G 77/16 (2006.01); C08G 77/18 (2006.01); C08K 5/057 (2006.01); C08K 5/09 (2006.01); C08K 5/378 (2006.01); C09D 5/02 (2006.01); C09D 183/06 (2006.01); C08K 5/00 (2006.01)
CPC C09D 5/086 (2013.01) [C08G 77/16 (2013.01); C08G 77/18 (2013.01); C08G 77/58 (2013.01); C08K 5/057 (2013.01); C08K 5/09 (2013.01); C08K 5/378 (2013.01); C09D 5/024 (2013.01); C09D 5/082 (2013.01); C09D 7/60 (2018.01); C09D 183/06 (2013.01); C09D 183/14 (2013.01); C08G 2150/90 (2013.01); C08K 5/0091 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A sol-gel comprising:
about 50 wt % or greater of water;
about 3 wt % to about 10 wt % of a compound that is a thio-lanthanide (III) salt, wherein the thio-lanthanide (III) salt comprises a triazole thiol ligand and a cation selected from cerium, praseodymium, or yttrium; and
a binder comprising:
an organosilane represented by Formula (II):

OG Complex Work Unit Chemistry
wherein R is selected from the group consisting of alkyl, cycloalkyl, aryl, arylether, poly(ethylene glycol), and poly(propylene glycol);
a zirconium (IV) tetraalkoxide; and
acetic acid;
wherein:
a molar ratio of the acetic acid to the zirconium (IV) tetraalkoxide is from about 1:1 to about 40:1,
a weight fraction of the binder in the sol-gel is about 0.3 wt % to about 50 wt %;
a weight ratio of the thio-lanthanide (III) salt to the binder is from about 0.01:1 to about 5:1; and
the thio-lanthanide (III) salt has a solubility in the sol-gel such that at least 1 g of thio-lanthanide (III) salt is soluble in 1 g of sol-gel.