Title:
METHOD OF RECOVERING TRANSESTERIFICATION CATALYST
Document Type and Number:
WIPO Patent Application WO/2003/028888
Kind Code:
A1
Abstract:
A method by which a polystannoxane compound which has a specific structure and is useful as a transesterification catalyst having excellent catalytic activity can be recovered at a satisfactory recovery percentage without deactivating the catalyst. A polystannoxane represented by the following general formula (1): (1) (wherein R represents methyl or ethyl&semi X's each independently represents an electron−attracting group having lone pair electrons on the atom bonded to the tin atom&semi and n is an integer of 1 to 8) is used as a transesterification catalyst to cause an alcohol and a carboxylic ester to undergo transesterification. Thereafter, the polystannoxane is extracted with water from the resultant crude reaction product to thereby recover the polystannoxane.
Inventors:
Jing YU. (Da Xue Road No.40, Qingdao, 3 Shandong, 26600, CN)
Xiu, Yanxia (Ru Yang Road No.10, Qingdao, 2 Shandong, 26604, CN)
Moriwaki, Masayuki (B-202, 740-1 Ariyoshi-cho, Midori-k, Chiba-shi Chiba, 266-0012, JP)
Kai, Hidetomo (B-301, 1-27-1 Osakida, Sakura-shi Chiba, 285-0817, JP)
Sansan WU. (Dong Guan Road No.1, Qingdao, 2 Shandong, 26604, CN)
Chen, Fengqi (Yang Zhou Road No.12, Qingdao, 2 Shandong, 26602, CN)
Xiu, Yanxia (Ru Yang Road No.10, Qingdao, 2 Shandong, 26604, CN)
Moriwaki, Masayuki (B-202, 740-1 Ariyoshi-cho, Midori-k, Chiba-shi Chiba, 266-0012, JP)
Kai, Hidetomo (B-301, 1-27-1 Osakida, Sakura-shi Chiba, 285-0817, JP)
Sansan WU. (Dong Guan Road No.1, Qingdao, 2 Shandong, 26604, CN)
Chen, Fengqi (Yang Zhou Road No.12, Qingdao, 2 Shandong, 26602, CN)
Application Number:
PCT/JP2002/009834
Publication Date:
April 10, 2003
Filing Date:
September 25, 2002
Export Citation:
Assignee:
DAINIPPON INK AND CHEMICALS, INC. (35-58, Sakashita 3-chome Itabashi-ku, Tokyo, 174-8520, JP)
Jing YU. (Da Xue Road No.40, Qingdao, 3 Shandong, 26600, CN)
Xiu, Yanxia (Ru Yang Road No.10, Qingdao, 2 Shandong, 26604, CN)
Moriwaki, Masayuki (B-202, 740-1 Ariyoshi-cho, Midori-k, Chiba-shi Chiba, 266-0012, JP)
Kai, Hidetomo (B-301, 1-27-1 Osakida, Sakura-shi Chiba, 285-0817, JP)
Sansan WU. (Dong Guan Road No.1, Qingdao, 2 Shandong, 26604, CN)
Chen, Fengqi (Yang Zhou Road No.12, Qingdao, 2 Shandong, 26602, CN)
Jing YU. (Da Xue Road No.40, Qingdao, 3 Shandong, 26600, CN)
Xiu, Yanxia (Ru Yang Road No.10, Qingdao, 2 Shandong, 26604, CN)
Moriwaki, Masayuki (B-202, 740-1 Ariyoshi-cho, Midori-k, Chiba-shi Chiba, 266-0012, JP)
Kai, Hidetomo (B-301, 1-27-1 Osakida, Sakura-shi Chiba, 285-0817, JP)
Sansan WU. (Dong Guan Road No.1, Qingdao, 2 Shandong, 26604, CN)
Chen, Fengqi (Yang Zhou Road No.12, Qingdao, 2 Shandong, 26602, CN)
International Classes:
B01J31/40; C07C67/03; B01J31/40; C07C67/00; (IPC1-7): B01J38/00; B01J31/12; B01J31/40
Attorney, Agent or Firm:
Shiga, Masatake (Shiga International Patent Office 2-3-1 Yaesu, Chuo-ku, Tokyo, 104-8453, JP)
Download PDF: