Invention Grant
- Patent Title: Compositions to stabilize asphaltenes in petroleum fluids
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Application No.: US16475343Application Date: 2016-12-30
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Publication No.: US11180588B2Publication Date: 2021-11-23
- Inventor: Rachael Anne Cole , Pradyumna Avinash Deshpande , Chandrashekhar Yeshwant Khandekar , Tore Nordvik , Loic Regnault De La Mothe , Elodie Shaw , Laure Canal , Marine Dugand , José Santiago
- Applicant: STEPAN COMPANY
- Applicant Address: US IL Northfield
- Assignee: STEPAN COMPANY
- Current Assignee: STEPAN COMPANY
- Current Assignee Address: US IL Northfield
- Agency: Dilworth IP, LLC
- International Application: PCT/IB2016/001980 WO 20161230
- International Announcement: WO2018/122570 WO 20180705
- Main IPC: C08F210/10
- IPC: C08F210/10 ; C08F8/46 ; C08G83/00 ; C08F220/28 ; C08G81/02 ; C09K8/524

Abstract:
Compositions may include those of the formula: (I) wherein R1 is an alkyl chain having a carbon number in the range of greater than 40 to 200, R2 is a multiester, R3 is hydrogen, an ion, or an alkyl chain having a carbon number in the range of 1 to 200, m is an integer selected from 0 to 4, and n is an integer selected from the range of 0 to 4, wherein the sum of m and n is 1 or greater. Compositions may include 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 10:1 to 30:1.
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