Compositions having pH-dependent viscosity, thickener...

Details Compositions having pH-dependent viscosity, thickener... Compositions having pH-dependent viscosity, thickener...

2011-06-07

2011-06-07

Kugel, Timothy J. (Department: 1765)

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

C507S124000, C507S136000, C510S421000, C510S436000, C524S081000, C524S115000, C524S147000

Reexamination Certificate

active

07956013

ABSTRACT:
Compositions comprising: (A) at least one surfactant of the general formula (I)in-line-formulae description="In-line Formulae" end="lead"?(R1—[(O—(CH2)2)x1(O—CH(CH3)CH2)x2]O)kP(═O)(OH)3-k  (I)in-line-formulae description="In-line Formulae" end="tail"?wherein the sequence of the alkyleneoxy units is arbitrary, each R1independently represents a moiety selected from the group consisting of linear and branched C12-C22-alkyl, C12-C22-alkenyl, C12-C22-alkynyl, (C11-C21-alkyl)carbonyl, (C11-C21-alkenyl)carbonyl and (C11-C21-alkynyl)carbonyl, k represents 1 or 2 and x1 and x2 each independently represent an integer of 0 to 20, the sum of x1 and x2 being a number of 1 to 20; and (B) at least one thickener comprising at least two hydrophobic groups R2which are linked to one another via a bridging hydrophilic group (α), wherein each R2, independently represents a moiety selected from the group consisting of C8-C32-alkyl, C8-C32-alkenyl, C8-C32-alkynyl, cycloalkyl, aryl, and aryl-C1-C32-alkyl, which in each case may have up to 3 hydroxyl substituents; wherein the composition has a pH which is viscosity-dependent.

REFERENCES:
patent: 4293428 (1981-10-01), Gale et al.
patent: 4360061 (1982-11-01), Canter et al.
patent: 4432881 (1984-02-01), Evani
patent: 6194356 (2001-02-01), Jones et al.
patent: 7084095 (2006-08-01), Lee et al.
patent: 2006/0111248 (2006-05-01), Lee et al.
patent: 2006/0128597 (2006-06-01), Chen et al.
patent: 2008/0081771 (2008-04-01), Lin et al.
patent: 0225661 (1987-06-01), None
patent: 2383355 (2003-06-01), None
patent: WO-92/08753 (1992-05-01), None
patent: WO-02/11874 (2002-02-01), None
patent: WO-02/102917 (2002-12-01), None
patent: WO-03/056130 (2003-07-01), None
patent: WO-2005/040554 (2005-05-01), None
patent: WO-2005/071038 (2005-08-01), None
patent: WO-2008/065173 (2008-06-01), None

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