US 11,725,132 B2
Compositions to stabilize asphaltenes in petroleum fluids
Rachael Anne Cole, Sandnes (NO); Pradyumna Avinash Deshpande, Houston, TX (US); Chandrashekhar Yeshwant Khandekar, Katy, TX (US); Tore Nordvik, Sandes (NO); Loic Regnault De La Mothe, Houston, TX (US); Elodie Shaw, Grenoble (FR); Laure Canal, Grenoble (FR); Marine Dugand, Grenoble (FR); and José Santiago, Limony (FR)
Assigned to STEPAN COMPANY, Northbrook, IL (US)
Filed by STEPAN COMPANY, Northfield, IL (US)
Filed on Oct. 14, 2021, as Appl. No. 17/501,838.
Application 17/501,838 is a division of application No. 16/475,343, granted, now 11,180,588, previously published as PCT/IB2016/001980, filed on Dec. 30, 2016.
Prior Publication US 2022/0033545 A1, Feb. 3, 2022
Int. Cl. C09K 8/524 (2006.01); C08F 8/46 (2006.01); C08F 210/10 (2006.01); C08G 81/02 (2006.01); C08G 83/00 (2006.01); C08F 220/28 (2006.01)
CPC C09K 8/524 (2013.01) [C08F 8/46 (2013.01); C08F 210/10 (2013.01); C08F 220/28 (2013.01); C08G 81/027 (2013.01); C08G 83/004 (2013.01); C08F 220/281 (2020.02)] 1 Claim
OG exemplary drawing
 
1. A composition comprising a reaction product of a polyisobutylene-substituted succinic anhydride and a hydroxy-functional dendrimer, wherein the molar ratio of polyisobutylene-substituted succinic anhydride to hydroxy-functional dendrimer is within the range of 15:1 to 30:1.