| abstract |
PURPOSE: To easily obtain the subject compound by washing the produced dipentaerythritol polyacrylate with a mixed solvent of an aromatic hydrocarbon and an aliphatic or alicyclic saturated hydrocarbon and water, thereby extracting and removing the substance active to lower the emulsification resistance from the product. n CONSTITUTION: Dipentaertyhritol is esterified with acrylic acid in an organic solvent and the product is washed with (A) a mixed solvent consisting of a 6-10C aromatic hydrocarbon solvent and a 6-10C aliphatic or alicyclic saturated hydrocarbon solvent at a weight ratio of 80:20-50:50 and (B) water to obtain a dipentaerythritol polyacrylate resistant to emulsification. The organic solvent to be used in the washing process is benzene, toluene, xylene, cyclohexane, n-hexane, n-heptane, n-octane, etc. The content of dipentaerythritol polyacrylate in the reaction product after the completion of the reaction is preferably ≥70wt.%. n COPYRIGHT: (C)1990,JPO&Japio |