US 11,999,855 B2
Fluorescent dye molecules having hydrophilicity and hydrophobicity for tracer applications
Wei Wang, Cambridge, MA (US)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Dec. 13, 2021, as Appl. No. 17/548,858.
Prior Publication US 2023/0183488 A1, Jun. 15, 2023
Int. Cl. C09B 11/24 (2006.01); C09B 11/08 (2006.01); G01N 21/64 (2006.01); G01N 33/24 (2006.01)
CPC C09B 11/24 (2013.01) [G01N 21/64 (2013.01); G01N 33/24 (2013.01); Y10T 436/13 (2015.01)] 17 Claims
OG exemplary drawing
 
1. A composition comprising:
a functionalized fluorescent dye, wherein the functionalized fluorescent dye is formed from an isothiocyanate-containing dye reacted with a primary amine selected from the group consisting of benzylamine, phenethylamine, 3-phenyl-1-propylamine, 4-phenylbutylamine, and 6-phenylhexan-1-amine wherein
the isothiocyanate-containing dye is selected from the group consisting of Rhodamine B isothiocyanate, an isomer thereof, tetramethylrhodamine isothiocyanate, and an isomer thereof.