公开(公告)号：DE2628988A1

公开(公告)日：1978-01-12

申请号：DE2628988

申请日：1976-06-28

Applicant: BASF AG

Inventor： LEUTNER BERND DIPL CHEM DR ,  SCHLUMPER HANS-ULRICH DIPL CHE ,  BENDER EBERHARD DIPL ING DR

IPC: A61K8/26 ,  A61Q15/00 ,  C01F7/64 ,  C01F7/66 ,  C01F7/74

Abstract: In the prodn. of basic aluminium cpds. of the formula Al2(OH)n(A)6-n.1/x (I), (where n is 1,2,3,4 or 5; A is bromide, sulphate or nitrate; and x is the valence of A), (a) an aq. soln. of aluminium bromide, sulphate or nitrate contg. is not >25 g./l. Al is treated with a is not >1.05 mol./l. soln. of an amine of mol.wt. 250-500 in a water-immiscible organic solvent; and (b) the aq. and organic phases are sepd. from each other. (I) are useful as ingredients of antiperspirant and haemostatic prepns. They can also be used for hydrophobising textiles, as tanning agents, as flocculating and phosphate-pptg. agents in water purificn., and in the prodn. of fire-resistant materials. Use of liq. ion-exchangers (i.e., organic solns. of amines) permits more rapid ion-exchange and reduces appts. costs, while the liq. ion-exchange is less sensitive towards contamination and poisoning than solid ion-exchange resins. The amt. of chemicals and wash water required for regeneration of the ion-exchanger is smaller.