Hydroxy alkane sulfonic acid sulfoalkyl esters

US4483799A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Helmut Kampfer · Idar-Oberstein, DE
• Detlef Wendisch · Bensberg, DE
• Marie Hase · Wittlich, DE

Key dates

• Filing date: Feb 2, 1981
• Grant date: Nov 20, 1984
• Expiry date: Feb 2, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B23/02
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Sulfoalkylating agents free from sultones may be obtained by heating hydroxy alkane sulfonic acids of propane or butane or the corresponding sultones having 5 or 6 ring members with up to four times the molar quantity of water to a temperature in the region of from 80.degree. to 180.degree. C. The sulfoalkylating agents are believed to be the "dimeric esters" of the hydroxy alkane sulfonic acids.