Process for producing vinyl sulfonic acid
AssigneeAsahi Kasei Finechem Co., Ltd.
InventorsHiroshi Akikaze, Takehiko Miyai
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Abstract
The subject invention provides: a method for producing vinyl sulfonic acid, comprising conducting demetallation of vinyl sulfonate salt, wherein the demetallation rate is not less than 95% according to the following formula: Demetallation rate(%)={(acid value after demetallation)/(acid value before demetallation)}×100; a method for producing vinyl sulfonic acid, comprising conducting demetallation of vinyl sulfonate salt, wherein demetallation is carried out using a strongly acidic ion exchange resin; and said method further comprising the step of purifying a product of the demetallation using a thin film evaporator.
Claims2
A method for producing vinyl sulfonic acid, comprising:
- conducting demetallation of vinyl sulfonate salt, wherein the demetallation is carried out using strongly acidic ion exchange resin, and wherein a demetallation rate is not less than 95% according to the following formula:
- Demetallation rate(%)={(acid value after demetallation)/(acid value before demetallation)}×100.
Dependencies are inferred from the claim text.