公开(公告)号：AT350413T

公开(公告)日：2007-01-15

申请号：AT04735738

申请日：2004-06-02

Applicant: BASF AG

Inventor： KLUMPE MARKUS ,  BALDENIUS KAI-UWE ,  HACKMANN CLAUS ,  LAUTERBACH ARNULF ,  SEELMANN-EGGEBERT HANS-PETER ,  ZIPPLIES MATTHIAS

IPC: C08G65/26 ,  C08G65/30

Abstract: A process is described for purifying polyalkylene glycols obtained by adding alkylene oxide to alkylene glycol, in which, after addition is complete, the resultant polyalkylene glycol is treated at a pH of >7 with a bleaching agent selected from the group consisting of peroxides, peracids, percarbonates, perborates, peroxodisulfates or oxygen, in each case with or without addition of a bleaching activator. The process is suitable in particular for preparing polyethylene glycol having molar weights from 196 to 203 g/mol which meets requirements of pharmacopeias.

公开(公告)号：DE102004008200A1

公开(公告)日：2005-09-01

申请号：DE102004008200

申请日：2004-02-18

Applicant: BASF AG

Inventor： BECKER STEFAN ,  VOELKEL LUDWIG ,  GOETZ THOMAS ,  MEYER-ROSCHER BERND ,  KLUMPE MARKUS ,  HANSCH WOLFGANG ,  BUREK ARNOLD ,  SPILGER STEFANIE

IPC: C04B24/26 ,  C08F290/14 ,  C08F283/06

Abstract: The present invention relates to the use of water-soluble or water-dispersible polymers as additives in mineral building materials. The novel polymers are obtainable by polymerizing alkoxylated derivatives of 3-allyloxy-1,2-propanediol with ethylenically unsaturated mono- or dicarboxylic acids or the anhydrides, esters or mixtures thereof and, if appropriate, with one or more further ethylenically unsaturated monomers C.

公开(公告)号：DE10348420A1

公开(公告)日：2005-05-25

申请号：DE10348420

申请日：2003-10-14

Applicant: BASF AG

Inventor： KLUMPE MARKUS ,  TROPSCH JUERGEN ,  KAHL ROLF-DIETER ,  BOEHN ROLAND ,  STUTZ SUSANNE ,  NOERENBERG RALF

IPC: C07C43/11 ,  C09K23/42 ,  C11D1/72 ,  C11D1/722 ,  C11D1/825 ,  C07C41/03 ,  B01D19/04 ,  B01F17/42

Abstract: The alkoxylate mixtures comprise alkoxylates of the formula (I) C5H11CH(C3H7)CH2O(B)p(A)n(B)m(A)qH(I) where A is ethyleneoxy, B, in each case independently, are C3-10-alkyleneoxy or mixtures thereof, groups A and B being present in the form of blocks in the stated sequence, p is a number from 0 to 10, n is a number greater than 0 to 20, m is a number greater than 0 to 20, q is a number greater than 0 to 10, p+n+m+q is at least 1, from 70 to 99% by weight of alkoxylates A1, in which C5H11 is n-C5H11, and from 1 to 30% by weight of alkoxylates A2, in which C5H11 is C2H5CH(CH3)CH2 and/or CH3CH(CH3)CH2CH2, being present in the mixture.