Title:
PRODUCTION OF AROMATIC BISPHOSPHATE
Document Type and Number:
Japanese Patent JP3383159
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To efficiently obtain the subject compound capable of easily giving crystal powder, excellent in handleability and useful as an additive, etc., in a high purity and in a high yield by reacting a specific aromatic monohydroxy compound with a phosphorus oxyhalide under a specific condition.
SOLUTION: This method for producing an aromatic bisphosphate comprises the first process for reacting an aromatic monohydroxy compound having a sterically hindered group at the ortho position with a phosphorus oxyhalide in the presence of a Lewis acid catalyst, and the second process for reacting the reaction product in the first process with an aromatic dihydroxy compound in the presence of a Lewis acid catalyst to obtain the aromatic bisphosphate. Therein, the aromatic monohydroxy compound is reacted with the phosphorus oxyhalide in a molar ratio of 2/1 to 1.1/2, preferably 2/1 to 1/1.05, in the first process, and the reaction mixture obtained in the first process is distilled with a thin film distillation device, etc., and subsequently subjected to the second process, thereby enabling to obtain the highly pure aromatic bisphosphate.
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Inventors:
Shigeru Kawada
Kiyoharu Hirao
Kazuo Noguchi
Kiyoharu Hirao
Kazuo Noguchi
Application Number:
JP20077096A
Publication Date:
March 04, 2003
Filing Date:
July 30, 1996
Export Citation:
Assignee:
Daihachi Chemical Industry Co., Ltd.
International Classes:
C07B61/00; C07F9/09; C07F9/12; C08K5/52; C08K5/523; C09K21/12; B01J27/06; (IPC1-7): C07F9/12; B01J27/06; C07F9/09; C08K5/523; C09K21/12
Domestic Patent References:
| JP8143584A | ||||
| JP51079A | ||||
| JP3234750A | ||||
| JP8301884A |
Other References:
【文献】米国特許3360591(US,A)
Attorney, Agent or Firm:
Shintaro Nogawa