公开(公告)号：DE2960214D1

公开(公告)日：1981-04-16

申请号：DE2960214

申请日：1979-07-30

Applicant: BASF AG

Inventor： PERNER JOHANNES DR DIPL CHEM ,  DIESSEL PAUL ING GRAD ,  STOECKIGT DIETER ING GRAD ,  MERGER FRANZ DR DIPL CHEM ,  PAETSCH JUERGEN DR DIPL CHEM

IPC: C11D3/20

Abstract: A method for regulating the viscosity of aqueous detergent and cleanser slurries, in which there are added to the slurries, as viscosity regulators, dihydric, trihydric or tetrahydric aliphatic alcohols, monobasic aliphatic carboxylic acids, hydroxycarboxylic acids, esters of the said alcohols and the said acids or mixtures of these, in which compounds the alcohols, carboxylic acids and hydroxycarboxylic acids, and the individual components of the esters, are of 5 to 9 carbon atoms, of which one is a quaternary atom, the alcohols and hydroxycarboxylic acids carry exclusively primary alcohol groups, and the carboxylic acids and hydroxycarboxylic acids have the carboxyl group bonded to the quaternary carbon atom.

公开(公告)号：DE2960312D1

公开(公告)日：1981-08-06

申请号：DE2960312

申请日：1979-07-30

Applicant: BASF AG

Inventor： PERNER JOHANNES DR DIPL CHEM ,  STOECKIGT DIETER ,  DIESSEL PAUL ,  MERGER FRANZ DR DIPL CHEM ,  PAETSCH JURGEN DR DIPL CHEM

IPC: C11D3/20

公开(公告)号：DE2960173D1

公开(公告)日：1981-04-02

申请号：DE2960173

申请日：1979-09-05

Applicant: BASF AG

Inventor： PERNER JOHANNES DR DIPL CHEM ,  STORK KARL DR DIPL CHEM ,  OPPENLAENDER KNUT DR DIPL CHEM

IPC: C08F22/02 ,  C08F22/06 ,  C11D3/00 ,  C11D3/37

Abstract: An improved process for the preparation of polymaleic acids having molecular weights of from 200 to 1,500, by polymerizing maleic anhydride in acetic anhydride in the presence of from 0.2 to 0.5 mole of hydrogen peroxide per mole of maleic anhydride, at from 80 DEG to 140 DEG C., and builders and encrustation inhibitors comprising the polymaleic acids prepared by the said process, for use in detergents.