Polyacrylates and their use as degassing agents for paints and coatings

US6353068B1 · kind B1 · utility

Assignee

• Th. Goldschmidt. AG · DE

Inventors

• Thomas Dietz · Richmond, US
• Eberhard Esselborn · Essen, DE
• Christian Psiorz · Essen, DE
• Ute Schick · Essen, DE
• Stefan Silber · Krefeld, DE
• Ellen Reuter · Essen, DE
• Dirk Wolfgram · Bochum, DE

Key dates

• Filing date: Sep 9, 1999
• Grant date: Mar 5, 2002
• Expiry date: Sep 9, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L33/10
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Polyacrylates having an average molecular weight of from about 1000 to about 10,000 and the general formula whereR4 is the radical of a known chain regulator or initiator,R1 is identical or different and is an alkyl radical, preferably of 1 to 4 carbon atoms,R2 is identical or different and is a saturated or unsaturated alkyl radical of 12 to 22 carbon atoms,R3 is a hydrocarbon radical which carries at least one (meth)acryloxy group,a is from 10 to 50,b is from 3 to 20,c is from 0 to 10,and the ratio a:b+c is from 0.25 to 4 and the ratio b:c is from 1:0 to 1:0.7 as degassing agents for paints and coatings.