Process for inhibiting polymerization of (meth)acrylic acid and/or (meth)acrylic esters

US8491758B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Gunter Lipowsky · Ladenburg, DE
• Steffen Rissel · Tauberbischofsheim, DE
• Volker Schliephake · Schifferstadt, DE
• Ulrich Jager · Lichtenfels, DE
• Sylke Haremza · Neckargemünd, DE

Key dates

• Filing date: Dec 9, 2010
• Grant date: Jul 23, 2013
• Expiry date: Sep 17, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C67/62
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for inhibiting polymerization of (meth)acrylic acid and/or (meth)acrylic esters by introducing an oxygenous gas into the (meth)acrylic acid and/or the (meth)acrylic ester, in which the (meth)acrylic acid and/or the (meth)acrylic ester has a degree of purity of at least 95% and is in the liquid state.