Method for agglomerating dispersed rubber

US6812283B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Wil Duijzings · Born, NL
• Sabine Oepen · Ellerstadt, DE
• Norbert Niessner · Friedelsheim, DE
• Michael Breulmann · Mannheim, DE
• Hardy Korb · Bad Dürkheim, DE

Key dates

• Filing date: Jan 22, 2003
• Grant date: Nov 2, 2004
• Expiry date: Jan 22, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08C1/07
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the agglomeration of at least one rubber (A), dispersed in an aqueous phase, by the addition of a dispersion of at least one agglomerating polymer (B) in aqueous phase, in which the agglomerating polymer B used is one containing substantially no free acid groups and the agglomeration is carried out in the presence of at least one basic electrolyte.