METHOD FOR FREE-RADICAL POLYMERISATION OR CROSS-LINKING IN PRESENCE OF SELECTED ORGANIC PEROXIDE OBTAINED EX SITU Russian patent published in 2012 - IPC C08F112/08 C08F114/06 C08F2/01 

FIELD: chemistry.

SUBSTANCE: described is a free-radical polymerisation method in which at least one polymerisable monomer reacts in the presence of at least one organic peroxide selected from a group, wherein the organic peroxide is obtained using a continuous method ex situ using closed plate heat exchanger. Described also is method for suspension polymerisation of vinyl chloride, as well as a method for suspension polymerisation of styrene in the presence of at least one organic peroxide selected from a group, wherein the organic peroxide is obtained using a continuous method ex situ using a closed plate heat exchanger. Described is a method for polymerisation of acrylic monomers in the presence of at least one organic peroxide selected from a group, wherein the peroxide is obtained using a continuous method ex situ using a closed plate heat exchanger. Described also is a free-radical polymerisation method in which a polymerisable monomer reacts in the presence of at least one organic peroxide selected from a group, wherein said method comprises steps (a)-(d) realised at the same place: a) obtaining a selected organic peroxide via a continuous method using a closed plate heat exchanger, b) feeding, if necessary, reaction mixture (a) into a purification apparatus, c) feeding the organic peroxide obtained at step (a) or step (b) into a polymerisation reactor, d) free-radical polymerisation of at least one polymerisable monomer in the presence of one or more organic peroxides fed at step (c). The invention also describes thermoplastic polymers and/or elastomers obtained using methods described above.

EFFECT: use, in free-radical polymerisation systems, of organic peroxides obtained directly where free-radical polymerisation takes place.

13 cl, 2 dwg, 3 ex