METHOD OF PRODUCING ACRYLIC ACID THROUGH THERMOLYSIS OF POLY-3-HYDROXYPROPIONATE CATALYSTED, AT LEAST, ONE MOLECULAR ACTIVE CONNECTION Russian patent published in 2018 - IPC C07C51/09 C07C57/04 C07C57/65 C07C51/377 C08G63/06 C08G63/08 

FIELD: chemistry.

SUBSTANCE: method includes the thermolysis of poly-3-hydroxypropionate catalyzed by, at least, one molecular organic active compound containing, at least, one tertiary nitrogen atom, which has a covalent bond to three different carbon atoms of this molecular organic active compound, wherein the weight average relative molecular weight of M_w poly-3-hydroxypropionate is from 1000 to 2000000 and that this, at least, one molecular organic active compound does not contain heteroatoms other than nitrogen and oxygen, other than carbon and hydrogen, does not contain nitrogen atoms, to which one or more of one or more of the hydrogen atoms contains not more than one oxygen atom, to which the hydrogen atom is covalently attached, does not contain an oxygen atom that has a covalent double bond with one of three different carbon atoms, does not contain neither a residue of aromatic hydrocarbon, nor a residue of substituted aromatic hydrocarbon, has a boiling point, which is at a pressure of 1.0133⋅10⁵ Pa is, at least, 150°C and not more than 350°C, and has a melting point which, at a pressure of 1.0133⋅10⁵ Pa, is ≤70°C. The invention also relates to a method of radical polymerizing acrylic acid.

EFFECT: improved method of producing acrylic acid.

36 cl