Preparation of 1,4-butanediol mono(meth)acrylate by esterification of (meth)acrylic acid with 1,4-butanediol, in which an aqueous solution of unconverted 1,4-butanediol is obtained

US5637760A · kind A · utility

Assignee

• BASF SE

Inventors

• Toni Dockner
• Helmut Lermer · Ludwigshafen, DE
• Klaus Bittins · Bischofswerda, DE
• Gerhard Nestler · Ludwigshafen, DE
• Gundo Brauch · Monsheim, DE

Key dates

• Filing date: Oct 10, 1995
• Grant date: Jun 10, 1997
• Expiry date: Oct 10, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C67/60
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

1,4-butanediol mono(meth)acrylate is prepared by esterification of (meth)acrylic acid with 1,4-butanediol, by a process in which an aqueous solution of unconverted 1,4-butanediol is obtained, wherein the 1,4-butanediol present in the aqueous solution is converted into readily volatile tetrahydrofuran in the presence of a catalytic amount of a strong acid and the tetrahydrofuran is separated off from the aqueous solution.