CLEAVING OLIGOMERIC (METH)ACRYLIC ACID IN THE LIQUID PHASE AND UNDER PRESSURE

摘要

The invention relates to a method for cleaving a (meth)acrylic acid oligomer of structure (I), optionally in the presence of a cleaving agent of structure R3-OH or of structure (R4)2-N-H. The (meth)acrylic acid oligomer, together with the cleaving agent, is heated to a temperature of at least 50 DEG C and under a pressure of at least 1 bar. The invention also relates to the use of water, optionally with a protic compound serving as a cleaving agent, for cleaving (meth)acrylic acid oligomers, to a device for synthesizing (meth)acrylic acid, to the use of this device for producing (meth)acrylic acid, and to the (meth)acrylic acid produced while using said device.