Process for producing aromatic hydroxy compound
AssigneeKawasaki Steel Corporation
InventorsMasato Takagi, Yoshihiro Naruse, Akinori Matsuura, Kyohko Kobayashi
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Abstract
An industrially useful process for the production of an aromatic hydroxy compound which comprises reacting an aromatic sulfonic acid alkali metal salt and/or an aromatic sulfonic acid with an alkali metal hydroxide in the presence of a surface active agent, wherein the reaction is effected by uniformly dispersing these-materials in a reaction medium selected from aliphatic, alicyclic and aromatic hydrocarbons. By employing this process, the product can be obtained with high purity, high yield and high selectivity using a minimum amount of the alkali metal hydroxide.
Claims5
A process for producing an aromatic hydroxy compound comprising the step of reacting
- (A) an alkali metal salt of an aromatic sulfonic acid and/or an aromatic sulfonic acid and
- (B) an alkali metal hydroxide, in a reaction medium
- (C) which comprises at least one compound selected from the group consisting of aliphatic hydrocarbons, alicyclic hydrocarbons and aromatic hydrocarbons, in the presence of
- (D) at least one additive compound selected from the group consisting of;
- fatty acid salts, aliphatic sulfonates, alkylaryl sulfonates other than the starting material, salts of alkyl sulfates, salts of alkyl sulfosuccinic acid ester, salts of sulfofatty acid ester,
- salts of sulfated monoglyceride of fatty acid,
- salts of polyoxyalkylene alkyl ether sulfate,
- salts of polyoxalkylene alkylphenylether sulfate,
- salts of polyoxyalkylene alkylphenylether sulfonate,
- salts of methyltaurine,
- salts of polyoxyalkylene alkylether phosphoric acid ester, polyoxyalkylene alkylethers, polyoxalkylene alkylphenyl ethers, fatty acid monoglycerides, polyoxyalkylene sorbitan fatty acid esters,
- sucrose fatty acid esters, alkyl alkanol amides, polyoxyalkyleneamines, polyoxyalkyleneamides, alkylaminoxides, and alkyl betaines wherein said additive compound (D) is used in an amount of from 0.01 to 1% by weight based on the alkali metal hydroxide (B).
Dependencies are inferred from the claim text.