GRAFT BLOCK COPOLYMER SURFACTANT AND METHODS TO DO THE SAME

A graft block copolymer surfactant has a backbone comprising a backbone moiety, hydrophilic blocks and hydrophobic blocks. The hydrophilic blocks have a molecular weight of at least 319 Daltons, the hydrophobic blocks have a molecular weight of at least 300 Daltons and the surfactant has an overall...

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Bibliographische Detailangaben
Hauptverfasser:	THOMPSON, LEE, IRVINE, DEREK, JOHN
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON DYES MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A graft block copolymer surfactant has a backbone comprising a backbone moiety, hydrophilic blocks and hydrophobic blocks. The hydrophilic blocks have a molecular weight of at least 319 Daltons, the hydrophobic blocks have a molecular weight of at least 300 Daltons and the surfactant has an overall molecular weight in the range 3000 to 70000 Daltons. Also disclosed are methods of making the surfactant; compositions made using the surfactant and a method of breaking an emulsion made using the surfactant. L'invention concerne un surfactif de copolymère bloc avec greffage qui présente un squelette comportant un groupe fonctionnel du squelette, des blocs hydrophiles et des blocs hydrophobes. Les blocs hydrophiles présentent un poids moléculaire d'au moins 319 Daltons, les blocs hydrophobes un poids moléculaire d'au moins 300 Daltons et le surfactif un poids moléculaire global compris entre 3000 et 70000 Daltons. L'invention concerne en outre des méthodes de production du surfactif, des compositions obtenues avec le surfactif et des méthodes de décomposition d'une émulsion obtenue avec le surfactif.