Patent ID: 6893497
Filing Date: 2005-05-17
Classification: C04B

Abstract:
1. A method for preparing a mineral binding agent suspension, comprising: mixing a polysaccharide derivative with a mineral binding agent, wherein said polysaccharide derivative is a partially hydrolyzed cellulose containing carboxyl groups which optionally also contains at least one of an hydroxyalkyl group and sulfate group wherein said partially hydrolyzed cellulose is a level-off DP-cellulose (LODP-cellulose) having a degree of polymerisation (DP) of 20 to 150 or a partially hydrolyzed amylose-rich starch having an amylose content and which contains sulfoalkyl groups containing 1 to 4 carbon atoms wherein the amylose content in the partially hydrolyzed amylose-rich starch ranges from 30 to 90% by weight.