Patent ID: 7816485

Claim:
A process for preparing (meth)acrylates of N-hydroxyalkylated amides, in which cyclic N-hydroxyalkylated amides (C) where Z 1 is oxygen, sulfur, or unsubstituted or substituted phosphorus, R 1 and R 2 are each independently C 2 -C 20 -alkylene, C 5 -C 12 -cycloalkylene, C 6 -C 12 -arylene, or C 2 -C 20 -alkylene interrupted by one or more oxygen and/or sulfur atoms and/or one or more substituted or unsubstituted imino groups and/or by one or more cycloalkyl, —(CO)—, —O(CO)O—, —(NH)(CO)O—, —O(CO)(NH)—, —O(CO)— or —(CO)O— groups, where the radicals mentioned may each be substituted by aryl, alkyl, aryloxy, alkyloxy, heteroatoms and/or heterocycles, or R 2 —OH is a group of the formula —[X i ] k —H, R 3 is hydrogen, C 1 -C 18 -alkyl, or C 2 -C 18 -alkyl, C 2 -C 18 -alkenyl, C 6 -C 12 -aryl, C 5 -C 12 -cycloalkyl which are each optionally interrupted by one or more oxygen and/or sulfur atoms and/or one or more substituted or unsubstituted imino groups, or a five- to six-membered heterocycle having oxygen, nitrogen and/or sulfur atoms, where the radicals mentioned may each be substituted by aryl, alkyl, aryloxy, alkyloxy, heteroatoms and/or heterocycles, k is a number from 1 to 50 and X i , for each i=1 to k may independently be selected from the group of —CH 2 —CH 2 —O—, —CH 2 —CH 2 —N(H)—, —CH 2 —CH 2 —CH 2 —N(H)—, —CH 2 —CH(NH 2 )—, —CH 2 —CH(NHCHO)—, —CH 2 —CH(CH 3 )—O—, —CH(CH 3 )—CH 2 —O—, —CH 2 —C(CH 3 ) 2 —O—, —C(CH 3 ) 2 —CH 2 —O—, —CH 2 —CH 2 —CH 2 —O—, —CH 2 —CH 2 —CH 2 —CH 2 —O—, —CH 2 —CHVin-O—, —CHVin-CH 2 —O—, —CH 2 —CHPh-O— and —CHPh-CH 2 —O— where Ph is phenyl and Vin is vinyl, are esterified with (meth)acrylic acid or transesterified with at least one (meth)acrylic ester (D) in the presence of at least one heterogeneous catalyst selected from the group consisting of inorganic salts (S) and enzymes (E), wherein the inorganic salt (S) has at least one cation, with the proviso that the at least one cation is not lithium; and at least one anion selected from the group consisting of carbonate (CO 3 2− ), hydrogencarbonate (HCO 3 − ), phosphate (PO 4 3− ), hydrogenphosphate (HPO 4 2− ), dihydrogenphosphate (H 2 PO 4 − ), sulfate (SO 4 2− ), sulfite (SO 3 2− ) and carboxylate (R 6 —COO − ), where R 6 is C 1 -C 18 -alkyl, or C 2 -C 18 -alkyl or C 6 -C 12 -aryl which are each optionally interrupted by one or more oxygen and/or sulfur atoms and/or one or more substituted or unsubstituted imino groups.