Patent ID: 9562054
Date: 2017-02-07
CPC Classifications: C07D,C08F,C09J

Claim:
1. A process for preparing isosorbide ethoxylate di(meth)acrylate by transesterifying alkyl (meth)acrylate with isosorbide ethoxylate, the process comprising: (i) ethoxylating isosorbide to obtain isosorbide ethoxylate, (ii) reacting alkyl (meth)acrylate with isosorbide ethoxylate in the presence of potassium phosphate as a catalyst and a stabilizer and in the presence of an azeotroping agent which forms an azeotrope with alcohol bound in the alkyl (meth)acrylate, (iii) continuously distilling off the azeotrope of the azeotroping agent and alcohol, wherein (ii) and (iii) are conducted simultaneously until the isosorbide ethoxylate has been essentially fully converted, (iv) removing the catalyst from a product mixture comprising isosorbide ethoxylate di(meth)acrylate, and (v) distilling unconverted alkyl (meth)acrylate and the azeotroping agent out of the product mixture.