Document Type and Number:
Japanese Patent JP3538843
Kind Code:
B2
Abstract:
A compound represented by the general formula (1): FSO2 CFXCF2 O(CFXCF2O)n CF(CF2 Y)COF, wherein X is a fluorine or chlorine atom or trifluoromethyl; Y is a fluorine, chlorine, bromine, & iodine atom; and n is 0, 1, or 2, is converted to a compound represented by the general formula (2): MOSO2 CFXCF2 O(CFXCF2 O)n CF(CF2 Y)COOM<1>, wherein X,Y, and n are each defined above; and M and M<1> may be the same or different and each represents an alkali metal or alkaline earth metal atom. The compound (2) is then thermally decomposed at 150 to 250 DEG C to obtain a vinyl ethersulfonic acid derivative represented by the general formula (3): ASO2 CFXCF2 O(CFXCF2 O)n CF=CF2, wherein X and n are each as defined above; and A is OM, OH, or fluorine. This process can provide the vinyl ethersulfonic acid derivative (3) while preventing the compound (1) from undergoing cyclization.
Application Number:
JP54145898A
Publication Date:
June 14, 2004
Filing Date:
March 31, 1998
Export Citation:
International Classes:
C07C303/22; C08F16/30; C08F259/08; C08F289/00; C08F293/00; C07C309/10; (IPC1-7): C07C309/10; C07C303/22; C08F214/18; C08F216/14; C08F297/00
Domestic Patent References:
JPS5728025A | 1982-02-15 | |||
JPS5728024A | 1982-02-15 | |||
JPS643140A | 1989-01-06 | |||
JPS5733623A | 1982-02-23 |