POLYDICYCLOPENTADIENE MICROSPHERES AND METHODS FOR PRODUCTION THEREOF Russian patent published in 2014 - IPC C08F2/18 C08F132/06 C08G61/08 

FIELD: chemistry.

SUBSTANCE: microspheres with sphericity of not less than 0.9, average size of which lies in the range of 0.25-1.1 mm and bulk density in the range of 0.4-0.7 g/cm³ are obtained. The method of producing the microspheres includes preparing a liquid polymer mixture by successively mixing dicyclopentadiene of purity of not less than 98% with a polymer stabiliser, a polymer modifier, a radical initiator and a catalyst. The obtained polymer mixture is held at 10-50°C for 1-40 minutes. Water, which is preheated to a temperature not below the temperature of the mixture and containing cationic and anionic surfactants, is then added in the form of a laminar stream. The spheres are formed while constantly mixing the liquid medium. The formed microspheres are separated from the solution, heated to 150-340°C and held at said temperature for 1-360 minutes.

EFFECT: obtaining microspheres from polydicyclopentadiene with improved physical and mechanical properties and compression strength of not less than 90 MPa.

5 cl, 2 dwg, 32 ex