PRODUCTION METHOD OF POLYMERIC PRODUCTS, CONTAINING CYCLOPROPANE GROUPS Russian patent published in 2017 - IPC C08C19/06 C08L15/00 

FIELD: chemistry.

SUBSTANCE: production method of polymeric products, containing the cyclopropane groups, composed of the macromolecules of general formula (1): , having the units ratio (a+b):(c+d)=60-90:10-40], consists of 1,2-polybutadiene with diazomethane reaction in the organic solvent medium in the presence of the catalyst at the molar ratio of 1,2-polybutadiene: diazomethane: the catalyst equal to 1:1.0 - 3.0:0.0025 to 0.01, the process is characterized in that, the palladium (II) compounds - palladium chloride PdCl₂ is used as the catalyst. As the 1,2-polybutadiene, the 1,2-polybutadiene of the atactic structure with the average molecular weight M_n from 800 to 70,000, the content of 1,2- and 1,4-polymerization links in the macromolecules is 60-90 and 10-40 mol. % or 1,2-polybutadiene syndiotactic structure with the syndiotacticity degree from 50 to 90%, the average molecular weight M_n from 35,000 to 75,000, the content of 1.2- and 1,4-polymerization links in the macromolecules is 75-95 and 5-25 mol %.

EFFECT: production of polymer products, containing in macromolecules the unsubstituted cyclopropane groups, having the high functionalisation degree and different molecular weight, which can be intentionally altered in the wide range of values.

2 cl, 1 tbl, 9 ex