C - Chemistry – Metallurgy – 08 – C
Patent
C - Chemistry, Metallurgy
08
C
C08C 1/07 (2006.01)
Patent
CA 2402243
The invention relates to a method for agglomerating finely divided rubber latices by adding an aqueous solution of a water-soluble amphiphilic copolymer that consists of at least one hydrophilic portion and at least one hydrophobic portion. The inventive method is further characterized in that the molar weight HB of the largest hydrophobic portion and the molar weight HL of the largest hydrophobic portion of the amphiphilic copolymer exceed the following minimum values: HB > 500 g/mol and HL > 2000 g/mol.
Procédé d'agglomération de caoutchouc à fines particules par ajout d'une solution aqueuse d'un copolymère amphiphile hydrosoluble, constitué d'au moins un segment hydrophile et d'au moins un segment hydrophobe, caractérisé en ce que le poids molaire HB du plus grand segment hydrophobe et le poids molaire HL du plus grand segment hydrophile du copolymère amphiphile dépassent les valeurs minimales suivantes: HB>500g/mol et HL>2000 g/mol.
Eichenauer Herbert
Jansen Bernhard
Meyer Rolf-Volker
Vanhoorne Pierre
Aktiengesellschaft Bayer
Fetherstonhaugh & Co.
Lanxess Deutschland Gmbh
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