Preparation of radiation-curable acrylates

US5516860A · kind A · utility

Assignee

• BASF SE

Inventors

• Wolfgang Reich · Frankenthal (Pfalz), DE
• Ulrich Jager · Lichtenfels, DE
• Erich Beck · Ladenburg, DE
• Edmund Keil · Ludwigshafen, DE
• Ulrich Erhardt · Ladenburg, DE
• Adolf Nuber · Böhl-Iggelheim, DE

Key dates

• Filing date: May 1, 1995
• Grant date: May 14, 1996
• Expiry date: May 1, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S525/922
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Radiation-curable acrylates are prepared by a process in which, in a 1st stage, a hydroxy compound is reacted with acrylic acid or methacrylic acid and, in or before a 2nd stage, the reaction product of the 1st stage is then reacted with an epoxy compound and compounds having one or more primary or secondary amino groups are added in the 2nd stage and the reaction in the 2nd stage is continued, after the addition of these compounds, until the acid number of the reaction mixture has decreased by at least 3 mg KOH/g of reaction mixture from the time of the addition of these compounds.