公开(公告)号：DK98684A

公开(公告)日：1984-09-13

申请号：DK98684

申请日：1984-02-24

Applicant: BASF AG

Inventor： NICKELS HELMUT ,  HACKENBERGER ALFRED

IPC: C07D307/62 ,  C07D

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：DK158264B

公开(公告)日：1990-04-23

申请号：DK98684

申请日：1984-02-24

Applicant: BASF AG

Inventor： NICKELS HELMUT ,  HACKENBERGER ALFRED

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：GB2179051A

公开(公告)日：1987-02-25

申请号：GB8619435

申请日：1986-08-08

Applicant: BASF AG

Inventor： BERGMANN UDO ,  HACKENBERGER ALFRED ,  PATSCH MANFRED

IPC: C07D403/12 ,  C09B62/02 ,  C09B62/04 ,  C09B62/12 ,  D06P3/66 ,  D06P1/382

Abstract: The novel compounds of the general formula (I> … … where A is a dye radical; the or each Y is oxygen, sulfur, NR' or a direct bond; n is 1 or 2; the or each R is hydrogen or unsubstituted or substituted C1-C4-alkyl; and Z is a bridge member; are useful for dyeing hydroxyl-containing textile material, especially cotton and wool.

公开(公告)号：DK158264C

公开(公告)日：1990-10-08

申请号：DK98684

申请日：1984-02-24

Applicant: BASF AG

Inventor： NICKELS HELMUT ,  HACKENBERGER ALFRED

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：GB2179051B

公开(公告)日：1989-11-29

申请号：GB8619435

申请日：1986-08-08

Applicant: BASF AG

Inventor： BERGMANN UDO ,  HACKENBERGER ALFRED ,  PATSCH MANFRED

IPC: C07D403/12 ,  C09B62/02 ,  C09B62/04 ,  C09B62/12 ,  D06P3/66

Abstract: The compounds of the general formula (I) (I) where A is a dye radical, where relevant the radicals Y independently of one another are each oxygen, sulfur, R1-N or a direct bond, n is 1 or 2, the radicals R1 independently of one another are each hydrogen or unsubstituted or substituted C1-C4-alkyl and Z is a bridge member, are very useful for dyeing hydroxyl-containing textile material.

公开(公告)号：DK98684D0

公开(公告)日：1984-02-24

申请号：DK98684

申请日：1984-02-24

Applicant: BASF AG

Inventor： NICKELS HELMUT ,  HACKENBERGER ALFRED

IPC: C07D307/62 ,  C07D307

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.