Global Patent Index - EP 2976407 A4

EP 2976407 A4 20170104 - AMIDE BRANCHED AROMATIC GELLING AGENTS

Title (en)

AMIDE BRANCHED AROMATIC GELLING AGENTS

Title (de)

AMIDVERZWEIGTE AROMATISCHE GELIERMITTEL

Title (fr)

AGENTS GÉLIFIANTS AMIDES AROMATIQUES RAMIFIÉS

Publication

EP 2976407 A4 20170104 (EN)

Application

EP 13878799 A 20130322

Priority

CA 2013050238 W 20130322

Abstract (en)

[origin: WO2014146191A1] A downhole fluid comprises a base fluid, for example a hydrocarbon base fluid, and a gelling agent. The gelling agent has an aromatic core of one or more aromatic rings, the gelling agent having two or more amide branches distributed about the aromatic core, each of the two or more amide branches having one or more organic groups. An example gelling agent is a pyromellitamide gelling agent. The pyromellitamide gelling agent may have the general formula of (I) with R1, R2,R3, R4, R5, R6, R7, and R8 each being a hydrogen or an organic group. Methods of use and composition are discussed.

IPC 8 full level

C09K 8/34 (2006.01); B01J 19/06 (2006.01); E21B 43/22 (2006.01); E21B 43/26 (2006.01)

CPC (source: EP)

C09K 8/035 (2013.01); C09K 8/68 (2013.01); C09K 2208/26 (2013.01)

Citation (search report)

  • [XI] EP 2254127 A1 20101124 - NEXANS [FR]
  • [X] US 7790793 B2 20100907 - SCHMIDT HANS-WERNER [DE], et al
  • [X] US 6645577 B2 20031111 - HORIKIRI TOMONARI [JP]
  • [X] KATIE W. K. TONG ET AL: "Pyromellitamide Gelators: Exponential Rate of Aggregation, Hierarchical Assembly, and Their Viscoelastic Response to Anions +", LANGMUIR, vol. 25, no. 15, 4 August 2009 (2009-08-04), pages 8586 - 8592, XP055149174, ISSN: 0743-7463, DOI: 10.1021/la804180h
  • [X] JAMES E. A. WEBB ET AL: "Pyromellitamide Aggregates and Their Response to Anion Stimuli", JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 129, no. 22, 11 May 2007 (2007-05-11), US, pages 7155 - 7162, XP055158634, ISSN: 0002-7863, DOI: 10.1021/ja0713781
  • See references of WO 2014146191A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2014146191 A1 20140925; CA 2903102 A1 20140925; CN 105264041 A 20160120; EP 2976407 A1 20160127; EP 2976407 A4 20170104

DOCDB simple family (application)

CA 2013050238 W 20130322; CA 2903102 A 20130322; CN 201380076817 A 20130322; EP 13878799 A 20130322