公开(公告)号：CH342948A

公开(公告)日：1959-12-15

申请号：CH342948D

申请日：1956-05-28

Applicant: BASF AG

Inventor： POMMER HORST DR ,  AREND WOLFGANG DR

IPC: C11B9/00

公开(公告)号：DE2060548A1

公开(公告)日：1972-06-15

申请号：DE2060548

申请日：1970-12-09

Applicant: BASF AG

Inventor： ADAM KARL DR ,  AREND WOLFGANG DR ,  HAUG PETER DR ,  HIMMELHAN EMIL DIPL-ING ,  JOSCHEK HANS-INGO DR ,  WITTWER ARNOLD DR

IPC: C07C29/78 ,  C07C31/20

Abstract: Very pure 1,6-hexanediol is obtd. from a mixt. with other diols by opt. distilling out the light and heavy fractions and partially crystallising out crude alcohol mixt. by cooling to 42-15 degrees C, followed by sepn. of the crystals, washing with 1,6-hexanediol and recycling of the mother liquor obtd. after sepn. of the crystals to the crude alcohol mixt. prior to its distn. Purity is >99% as reqd. in the prepn. of plastics and esp. fibres.

公开(公告)号：DE2149603B1

公开(公告)日：1973-04-26

申请号：DE2149603

申请日：1971-10-05

Applicant: BASF AG

Inventor： AREND WOLFGANG DR ,  EISFELD KARL DR ,  HAUG PETER DR ,  HIMMELHAN EMIL DIPL-ING ,  SCHOLZ HEINRICH DR ,  WEGERICH ANTON DR

IPC: C07C255/04 ,  C07C20060101 ,  C07C67/00 ,  C07C253/00 ,  C07C253/34 ,  C07C121/26

Abstract: 1396115 Continuous purification of adiponitrile BADISCHE ANILIN- & SODAFABRIK AG 4 Oct 1972 [5 Oct 1971] 45730/72 Heading C2C The continuous purification of adiponitrile is effected by cooling the impure adiponitrile in a crystallization zone, indirectly by the evaporation of liquid ammonia (e.g. at -18‹ to -6‹C.), to form a suspension of finely divided solid adiponitrile (e.g. mean diameter 0À1 to 1 mm.) in liquid adiponitrile, separating the solid from the liquid, washing the solid dinitrile with liquid adiponitrile, separating the mother liquor, obtained after separation of the solid dinitrile, into two unequal portions by weight, returning the larger (e.g. 55 to 90% by weight of the total) without intervening treatment to the crystallization zone and purifying the smaller part by distillation before returning this also to the crystallization zone. The suspension produced preferably contains 30 to 50% by weight of solid dinitrile and is conveniently allowed to stand before being separated. The liquid adiponitrile used to wash the solid is preferably pure liquid adiponitrile obtained by melting some of the separated crystals and may be returned to the crystallization zone after use. 1 - Cyanocyclopentanimine - 2 is obtained as contaminant from that portion of mother liquor subjected to purification by distillation.

公开(公告)号：DE1794044A1

公开(公告)日：1971-10-07

申请号：DE1794044

申请日：1968-08-30

Applicant: BASF AG

Inventor： AREND WOLFGANG DR ,  HIMMELHAN EMIL DIPL-ING

IPC: B01D9/00 ,  G09F13/16 ,  G09F19/00

公开(公告)号：DE972304C

公开(公告)日：1959-07-02

申请号：DEB0034032

申请日：1955-01-09

Applicant: BASF AG

Inventor： AREND WOLFGANG DR ,  TRIESCHMANN HANS-GEORG DR