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公开(公告)号：DE2517447C2
公开(公告)日：1977-03-03
申请号：DE2517447
申请日：1975-04-19
Applicant: BASF AG
Inventor： SCHWIRTEN KURT DR , KUMMER RUDOLF DR , SCHINDLER HANS-DIETER DR
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公开(公告)号：DE2517447B1
公开(公告)日：1976-07-22
申请号：DE2517447
申请日：1975-04-19
Applicant: BASF AG
Inventor： SCHWIRTEN KURT DR , KUMMER RUDOLF DR , SCHINDLER HANS-DIETER DR
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公开(公告)号：CH599095A5
公开(公告)日：1978-05-12
申请号：CH603276
申请日：1976-05-13
Applicant: BASF AG
Inventor： SCHNEIDER KURT DR , KUMMER RUDOLF DR , SCHWIRTEN KURT DR , SCHINDLER HANS-DIETER DR
IPC: C07C69/612 , B01J31/00 , C07B61/00 , C07C51/00 , C07C51/10 , C07C57/30 , C07C57/32 , C07C57/34 , C07C57/40 , C07C57/58 , C07C67/00 , C07D213/55 , C07D215/14 , C07D215/48 , C07D333/24 , C07D333/38 , C07C63/50 , C07C69/76
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公开(公告)号：DE2507058A1
公开(公告)日：1976-09-02
申请号：DE2507058
申请日：1975-02-19
Applicant: BASF AG
Inventor： KUMMER RUDOLF DR , SCHWIRTEN KURT DR , SCHINDLER HANS-DIETER DR
Abstract: Process for prepn. of butane-1,4-diol, and 2-methylpropane-1,3-diol, and of their mono- and diacetates, takes place by (1) hydrogenating butan-1-al-4-yl acetate and 2-methyl-propan-1-al-3-yl acetate in the presence of (a) 2-8 (3-5) mol. MeOH (w.r.t. starting materials) and (b) catalytic concns. of an acid, (A), at 80-150 degrees C under 20-200 bar, using a hydrogenation catalyst, and (2) opt. converting the butan-1-ol-4-yl acetate and 2-methylpropan-1-ol-3-yl acetate, obtd. as hydrogenation prods., to the free diols, by hydrolysis, or to the diacetates, by esterification. Prods. are useful components for varnishes and polyurethanes and crosslinking agents for textile finishes. Presence of MeOH and acid (A) causes acetalisation of formyl gp. in starting materials. Acetalisation suppresses AcOH dissociation, as side-reaction, as observed in hydrogenation of the free aldehydes. Prod. yield in methyl acetal hydrogenation is increased to 89-98%, compared to diol yields of 30-40% in free aldehyde hydrogenation.
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