Process for the production of a glycidyl group containing acrylic resin and its use

US4181642A · kind A · utility

Assignee

• Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler

Inventors

• Hans-Joachem Holle · Hanau, DE
• Gerhard Morlock · Hanau, DE

Key dates

• Filing date: Sep 25, 1978
• Grant date: Jan 1, 1980
• Expiry date: Sep 25, 1998

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31855
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

There are prepared powder enamels or varnishes containing an acrylic resin in combination with an aliphatic dicarboxylic acid. The acrylic resin has glycidyl groups and is prepared by bulk polymerizing a mixture of: PA0 (a) methyl methacrylate, 20 to 70 weight %; PA0 (b) at least one ester of acrylic acid or methacrylic acid with a monohydric alcohol, whose homopolymer has a glass transition temperature below 40.degree. C., 10 to 40 weight %; PA0 (c) glycidyl acrylate or glycidyl methacrylate, 10 to 25 weight %; and PA0 (d) an additional monomer copolymerizable with (a), (b) and (c), 0 to 50 weight %; in the presence of a radical (free radical) catalyst and in the presence of, based on the weight of the monomer mixture of 0.1 to 3.0 weight percent of at least one ester of phosphorous acid having the formula: ##STR1## where R.sub.1 is hydrogen or a saturated aliphatic group with 1 to 16 carbon atoms, an aryl group with 6 to 10 carbon atoms, an alkyl substituted aryl with 1 to 12 carbon atoms in the alkyl, or an aralkyl group with 7 to 18 carbon atoms and R.sub.2 and R.sub.3 are the same or different saturated aliphatic groups with 1 to 16 carbon atoms, aryl groups with 6 to 10 carbo…