US 12,338,382 B2 · Surfactants having non-conventional hydrophobes

Abstract

The present invention is directed to surfactants with small hydrophobes, which are of non-conventional hydrophobe size. The surfactants of the present invention utilize a small hydrophobic moiety with a polyalkoxylate chain comprising PO, BO and/or EO groups, with optional ionic groups, such as anionic, cationic and zwitterionic, to achieve the desired hydrophilic-lipophilic balance (HLB). The present invention is further directed to formulations comprising the surfactants of the invention, and methods of using the surfactants of the invention, including in enhanced oil recovery applications.

Claims18

Dependent claims

A compound having the formula:

R1—O—(POx-EOy) —Z
wherein R1 is a branched C3 to C7 alkyl;
wherein x is 15-100;
wherein y is 10-250;
wherein (x+y)≥25;
and
wherein Z is carboxylate.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/500,250Filed 4 Apr 2018 · us provisional application

Priority

4 Apr 2017

Published

US 2021/0039060 A111 Feb 2021

Granted

24 Jun 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification18 codes

C09K 23/42
Use of substances as emulsifying, wetting, dispersing, or foam-producing agents: ethers, e.g. polyglycol ethers of alcohols or phenols
C11D 1/37
Anionic compounds: mixtures of compounds all of which are anionic
C07C 59/125
Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, [IMAGE…: saturated…
C07C 217/28
The carbon skeleton being acyclic and saturated: having one amino group and at least two singly-bound oxygen atoms, with at least one being part…

Surfactants having non-conventional hydrophobes

Life of this patent

Surfactants having non-conventional hydrophobes

Life of this patent

Abstract

Claims18