公开(公告)号：CA2915636C

公开(公告)日：2021-10-12

申请号：CA2915636

申请日：2014-07-10

Applicant: BASF SE

Inventor： GADT TORBEN ,  WINKLBAUER MARTIN ,  GRASSL HARALD ,  SCHINABECK MICHAEL ,  HILLESHEIM NINA SUSANNE ,  GRAFETSTETTER ANTONIA

IPC: C08F220/28 ,  C09K23/52 ,  C04B24/14 ,  C04B24/24 ,  C09K23/14 ,  C09K23/22 ,  C11D3/06

Abstract: The invention relates to a dispersant comprising a polymer obtainable by copolymerization of monomers including 5 to 80 mol% of a hydroxyalkyl acrylate phosphate and/or hydroxyalkylacrylamide phosphate (monomer 1), 0 to 20 mol% of a di(hydroxyalkyl acrylate) phosphate and/or di(hydroxyalkylacrylamide) phosphate (monomer 2) and 1 to 80 mol% of a polyalkylene glycol-containing macromonomer comprising analkene group (monomer 3). Further disclosed is a process for preparing the polymers of the invention and the use thereof as dispersants in calcium sulphate-containing compositions. A further aspect of the invention is a process for producing shaped gypsum bodies, and also shaped gypsum bodies, more particularly gypsum plasterboards and self-levelling screeds, comprising the dispersant of the invention.

公开(公告)号：CA2915636A1

公开(公告)日：2015-01-15

申请号：CA2915636

申请日：2014-07-10

Applicant: BASF SE

Inventor： GADT TORBEN ,  WINKLBAUER MARTIN ,  GRASSL HARALD ,  SCHINABECK MICHAEL ,  HILLESHEIM NINA SUSANNE ,  GRAFETSTETTER ANTONIA

IPC: C08F220/28 ,  C09K23/52 ,  C04B24/14 ,  C04B24/24 ,  C09K23/14 ,  C09K23/22 ,  C11D3/06

Abstract: The invention relates to a dispersant comprising a polymer obtainable by copolymerization of monomers including 5 to 80 mol% of a hydroxyalkyl acrylate phosphate and/or hydroxyalkylacrylamide phosphate (monomer 1), 0 to 20 mol% of a di(hydroxyalkyl acrylate) phosphate and/or di(hydroxyalkylacrylamide) phosphate (monomer 2) and 1 to 80 mol% of a polyalkylene glycol-containing macromonomer comprising analkene group (monomer 3). Further disclosed is a process for preparing the polymers of the invention and the use thereof as dispersants in calcium sulphate-containing compositions. A further aspect of the invention is a process for producing shaped gypsum bodies, and also shaped gypsum bodies, more particularly gypsum plasterboards and self-levelling screeds, comprising the dispersant of the invention.