Invention Grant
- Patent Title: Preparation of (meth)acrylates
- Patent Title (中): (甲基)丙烯酸酯的制备
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Application No.: US09592736Application Date: 2000-06-13
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Publication No.: US06458991B1Publication Date: 2002-10-01
- Inventor: Wolfgang Paulus , Wolfgang Reich , Erich Beck , Thomas Jaworek , Rainer Königer
- Applicant: Wolfgang Paulus , Wolfgang Reich , Erich Beck , Thomas Jaworek , Rainer Königer
- Priority: DE19929258 19990625
- Main IPC: C07C6952
- IPC: C07C6952

Abstract:
Compounds having alcoholic hydroxyl groups are esterified with acrylic or methacrylic acid in the presence of copper(II) salts or mixtures thereof as polymerization inhibitors and in the presence of a hydrocarbon as a water-entraining agent with removal of the water of reaction at from 90 to 150° C. After the esterification, the copper salt is precipitated as copper sulfide and is separated off from the ester. The light-color (meth)acrylates resulting in the high yields are particularly suitable for coatings containing colored pigment on substrates such as wood, paper, mineral building materials, plastics or metal.
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