Patent ID: 7993886

Claim:
A process for preparing (meth)acrylates of N-hydroxyalkylated amides, in which open-chain N-hydroxyalkylated amides are esterified with (meth)acrylic acid or transesterified with at least one (meth)acrylic ester in the presence of at least one heterogeneous catalyst selected from the group consisting of an inorganic salt and an enzyme, wherein Z′ is sulfur, unsubstituted or substituted phosphorus or mono- or unsubstituted nitrogen (N—R 3 ), R 2 is 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 j ] k —H, R 3 , R 4 and R 5 are each independently 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, and R 3 and R 5 may also together form a five- to twelve-membered ring, with the proviso that, in the case that Z 1 ═O, R 5 is only unsubstituted C 1 -C 18 -alkyl, C 6 -C 12 -aryl or C 5 -C 12 -cycloalkyl, k is a number from 1 to 50, 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, the inorganic salt has 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 (HPO 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, and the inorganic salt has at least one cation selected from the group consisting of potassium, sodium, alkaline earth metals, ammonium, cerium, iron, manganese, chromium, molybdenum, cobalt, nickel and zinc.