公开(公告)号：AU2008322964A1

公开(公告)日：2009-05-22

申请号：AU2008322964

申请日：2008-11-13

Applicant: BASF SE

Inventor： SCHMIDT KATI ,  LEYRER REINHOLD J

IPC: C08F220/06 ,  C08F2/22 ,  C08F220/18 ,  C08F222/06 ,  C08F265/02 ,  C08F265/06 ,  C08F267/02 ,  C11D3/00

Abstract: A method is described for producing an aqueous thickener dispersion from a monomer composition made of at least one ethylenically unsaturated carboxylic acid and at least one ethylenically unsaturated hydrophobic monomer, (i) an at least partially polymerized pre-emulsion being produced from 10 to 80 wt.-% of said monomer composition, and (ii) the residual quantity of said monomer composition being added completely to the at least partially polymerized pre-emulsion and initiating a radical polymerization. The monomer composition preferably also comprises an associative monomer. The method avoids disadvantages of batch polymerization, such as inadequate batch-to-batch reproducibility and safety problems.