IP Library Granted Patent US 7,671,099
Granted Patent B2
US 7,671,099 · App. 12/191,130 · Granted Mar 2, 2010

Method for spearation crude oil emulsions

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Quick Facts
Patent No.
US 7,671,099
App. No.
12/191,130
Granted
Mar 2, 2010
Kind
B2
Abstract

A method for breaking an emulsion of oil and water comprising contacting the emulsion with a demulsifier comprising a terpene alkoxylate is disclosed.

Claims (9)

1. A method for breaking an emulsion of oil and water comprising contacting the emulsion with a demulsifier comprising a terpene alkoxylate

wherein the terpene alkoxylate has the following formula (VIII):

wherein R 6 is methyl, n is about 15 to 20, and m is about 3 to 7.

2. The method of claim 1 further comprising dispensing the demulsifier in a suitable solvent prior to contacting the demulsifier with the emulsion.

3. The method of claim 2 wherein the solvent is selected from the group consisting of glycols, glycol ethers, alcohols, water, hydrocarbons, aromatic solvents, fatty acid methyl esters, and combinations thereof.

4. The method of claim 1 wherein the emulsion is a water-in-oil emulsion.

5. The method of claim 1 wherein the demulsifier further comprises one or more surfactants selected from the group consisting of alkylsulfosuccinates, alkylphosphonic acids, salts of alkylsulfosuccinates, salts of alkylphosphonic acids, ethylene oxide/propylene oxide copolymers, ethoxylated fatty acid esters of polyethylene glycol, and modified alkanimides.

6. The method of claim 5 wherein the further surfactant is an alkyl phosphonic acid or salt of the formula R 1 PO 3 MM 1 (I); phosphinic acid and salts of the formula R 1 R 2 POM (IX); alkyl phosphoric acids and salts of the formula R 1 OPO 3 MM 1 (X); and dialkyl phosphoric acids and salts of the formula (R 1 O)(R 2 O)POOM 1 (XI);

wherein R 1 and R 2 are may be the same or different alkyl groups and may be branched or linear; M and M 1 can be the same or different, selected from the group consisting of hydrogen, an alkali metal such as sodium or potassium, and an ammonium salt.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 3, 2011
From: RHODIA INC.
To: RHODIA OPERATIONS
Reel/Frame 025756/0342 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 20, 2011
From: RHODIA INC.
To: RHODIA OPERATIONS
Reel/Frame 025736/0801 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 19, 2008
From: TALINGTING-PABALAN, RUELA; WOODWARD, GARY; DAHANAYAKE, MANILAL S.; ADAM, HERVE
To: RHODIA INC.
Reel/Frame 021560/0978 →