METHOD FOR PREPARING SYNTHETIC GUTTA-PERCHA (VARIANTS), SYNTHETIC GUTTA-PERCHA (VARIANTS) AND COMPOSITION FOR TIGHT MEDICINAL BANDAGE (VARIANTS) Russian patent published in 2006 - IPC C08F36/08 C08F136/08 C08L9/00 A61L15/07 A61L15/12 

FIELD: medicine, chemical technology.

SUBSTANCE: invention relates to a method for preparing polyisoprene trans-isomers and for preparing materials of medicinal designation also. The polymerization reaction of isoprene is carried out in aliphatic solvent medium in the presence of a catalyst applied or not applied on silica gel. Catalyst represents titanium tetrachloride precipitated on magnesium dichloride. The polymerization reaction is carried out at 25-40°C, at the concentration of isoprene in the polymerization medium 0.8-1.0 mole/l, in the mole ratio co-catalyst : catalyst from 32 to 50. By other variant the polymerization reaction of isoprene is carried out in gaseous phase at 18-25°C with preliminary pre-polymerization. Prepared synthetic gutta-percha is used, in particular, as a binding agent in combination with dispersed mineral filling agent in composition for the tight medicinal bandage. Invention provides enhancing hardness of gutta-percha and decreasing hardening time of the composition.

EFFECT: improved preparing method.

9 cl, 1 tbl, 9 ex