公开(公告)号：DE3460211D1

公开(公告)日：1986-07-17

申请号：DE3460211

申请日：1984-03-05

Applicant: BASF AG

Inventor： NICKELS HELMUT DR ,  HACKENBERGER ALFRED DR

IPC: C07D307/62

Abstract: Fatty acid esters of ascorbic acid are prepared by a process in which a homogeneous mixture of (a) ascorbic acid, (c) concentrated sulfuric acid having a concentration of not less than 96% and (c) a methyl or ethyl ester of a fatty acid of 12 to 18 carbon atoms is reacted at from 20 DEG to 50 DEG C. Using the novel process, the fatty acid esters of ascorbic acid, in particular ascorbyl palmitate, which are very desirable antioxidants are obtained by a procedure which is technically simpler and hence cheaper than the conventional processes, but in equally good yields.

公开(公告)号：DE3560105D1

公开(公告)日：1987-05-07

申请号：DE3560105

申请日：1985-01-25

Applicant: BASF AG

Inventor： REBAFKA WALTER DR ,  NICKELS HELMUT DR

IPC: C07C69/88 ,  C07C67/08

公开(公告)号：DE3266878D1

公开(公告)日：1985-11-14

申请号：DE3266878

申请日：1982-12-16

Applicant: BASF AG

Inventor： REBAFKA WALTER DR ,  NICKELS HELMUT DR

IPC: C07C69/025 ,  B01J31/00 ,  B01J31/10 ,  C07B61/00 ,  C07C27/00 ,  C07C29/04 ,  C07C33/025 ,  C07C33/03 ,  C07C35/02 ,  C07C67/00 ,  C07C67/04 ,  C07C69/145

公开(公告)号：DE3403575A1

公开(公告)日：1985-08-08

申请号：DE3403575

申请日：1984-02-02

Applicant: BASF AG

Inventor： REBAFKA WALTER DR ,  NICKELS HELMUT DR

IPC: C07C69/88 ,  C07C67/08

公开(公告)号：DE3308922A1

公开(公告)日：1984-09-13

申请号：DE3308922

申请日：1983-03-12

Applicant: BASF AG

Inventor： NICKELS HELMUT DR ,  HACKENBERGER ALFRED DR

IPC: C07D307/62

Abstract: Fatty acid esters of ascorbic acid are prepared by a process in which a homogeneous mixture of (a) ascorbic acid, (c) concentrated sulfuric acid having a concentration of not less than 96% and (c) a methyl or ethyl ester of a fatty acid of 12 to 18 carbon atoms is reacted at from 20 DEG to 50 DEG C. Using the novel process, the fatty acid esters of ascorbic acid, in particular ascorbyl palmitate, which are very desirable antioxidants are obtained by a procedure which is technically simpler and hence cheaper than the conventional processes, but in equally good yields.