METHOD OF PRODUCING PHOSPHORUS- AND CHLORINE-CONTAINING METHACRYLATES Russian patent published in 2012 - IPC C07F9/09 C07F9/40 

FIELD: chemistry.

SUBSTANCE: invention relates to an improved method of producing phosphorus- and chlorine-containing methacrylates of general formula: ,

where R = lower alkyl, chloroalkyl, alkoxyl, phenoxyl or a group -

R₁ = lower alkoxyl, phenoxyl or a group

,

which can be used to produce polymer materials, including uncoloured, optically transparent materials, as well as low-inflammability composite materials. The method involves reaction of acid chlorides of pentavalent phosphorus with glycidyl ether of methacrylic acid in the presence of a quaternary ammonium salt as a catalyst, as well as a polymerisation inhibitor when adding the glycidyl ether of methacrylic acid to the mixture of acid chloride of pentavalent phosphorus with the catalyst and polymerisation inhibitor and raising temperature from 40°C to 75°C, and then heating the reaction mass to 70÷80°C.

EFFECT: method enables stabilisation of the temperature conditions of the process and avoiding formation of polymer in the reaction mass.

2 cl, 9 ex