EP 2111381 A2 20091028 - PH-REGULATED THICKENER SYSTEM
Title (en)
PH-REGULATED THICKENER SYSTEM
Title (de)
PH-SCHALTBARES VERDICKERSYSTEM
Title (fr)
SYSTÈME ÉPAISSISSANT À PH COMMUTABLE
Publication
Application
Priority
- EP 2007063011 W 20071129
- EP 06125152 A 20061130
- EP 07847527 A 20071129
Abstract (en)
[origin: WO2008065172A2] The present invention relates to a composition with pH-dependant viscosity, comprising (A) at least one surfactant of the general formula (I), (R<SUP>1</SUP>-[(O-(CH<SUB>2</SUB>)<SUB>2</SUB>)<SUB>x1</SUB>(O-CH(CH<SUB>3</SUB>)CH<SUB>2</SUB>)<SUB>x2</SUB>]O)<SUB>k</SUB>P(=O)(OH) (I), wherein the sequence of the alkenoxy units is optional, R<SUP>1 </SUP>is selected from linear or branched C<SUB>12</SUB>-C<SUB>22</SUB>-alkyl, C<SUB>12</SUB>-C<SUB>22</SUB>-alkenyl, C<SUB>12</SUB>-C<SUB>22</SUB>-alkinyl, (C<SUB>11</SUB>-C<SUB>21</SUB>-alkyl)carbonyl, (C<SUB>11</SUB>-C<SUB>21</SUB>-alkenyl)carbonyl and (C<SUB>11</SUB>-C<SUB>21</SUB>-alkinyl)carbonyl, k is 1 or 2, and x1 and x2 independently from each other are an integer from 0 to 20, wherein the sum of x<SUP>1</SUP> und x<SUP>2 </SUP>is a number from 1 to 20, and (B) at least one thickener. comprising at least two hydrophobic groups R<SUP>2</SUP>, which are connected with each other via a bridging hydrophilic group (a). The invention further relates to the use for the controlled adjustment of the rheological properties of aqueous compositions and to methods for the treatment of underground geological formations.
IPC 8 full level
C04B 24/00 (2006.01); C09K 23/14 (2022.01); C09K 3/00 (2006.01); C09K 8/00 (2006.01); C09K 8/035 (2006.01); C11D 1/00 (2006.01)
CPC (source: EP US)
A01N 25/10 (2013.01 - EP US); C04B 40/0039 (2013.01 - EP US); C09K 3/00 (2013.01 - EP US); C09K 8/035 (2013.01 - EP US); C09K 8/467 (2013.01 - EP US); C11D 1/83 (2013.01 - EP US); C11D 3/3707 (2013.01 - EP US); C11D 17/003 (2013.01 - EP US); C04B 2103/0079 (2013.01 - EP US); C11D 1/34 (2013.01 - EP US); C11D 1/72 (2013.01 - EP US)
Citation (search report)
See references of WO 2008065172A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008065172 A2 20080605; WO 2008065172 A3 20090319; BR PI0719666 A2 20131217; CA 2669617 A1 20080605; CA 2669617 C 20151110; CN 101541705 A 20090923; CN 101541705 B 20141008; CN 101541914 A 20090923; EA 020912 B1 20150227; EA 200900748 A1 20091230; EP 2111381 A2 20091028; MX 2009005163 A 20090525; NO 20091925 L 20090529; US 2010069268 A1 20100318; US 7956013 B2 20110607
DOCDB simple family (application)
EP 2007063011 W 20071129; BR PI0719666 A 20071129; CA 2669617 A 20071129; CN 200780044320 A 20071129; CN 200780044330 A 20071129; EA 200900748 A 20071129; EP 07847527 A 20071129; MX 2009005163 A 20071129; NO 20091925 A 20090518; US 51697007 A 20071129