Patent ID: 9359287
Filing Date: 2016-06-07
CPC Classification: C07C

Claim Text:
1. A process for recovering noble products comprising dialkylaminoalkyl(meth)acrylate and an amino alcohol, starting from heavy (meth)acrylic fractions generated during the production of (meth)acrylic esters by transesterification, the heavy fractions comprising at least the noble products and Michael adducts resulting from reactions of addition on the (meth)acrylic double bonds, said process comprising the steps of: (i) adding at least one antifouling agent and optionally a viscosity-reducing compound to the heavy fractions to form a mixture; (ii) submitting the mixture to temperature and distillation conditions sufficient for cracking the Michael adducts into their constituent components without adding acid; (iii) recovering the noble products in the form of a stream of distillate, and of a final residue that is sufficiently fluid to be transported by pump, wherein the antifouling agent is a compound of formula (A): in which: