Polymer proppant and method for producing same

A method for producing a proppant, including obtaining a mixture of oligocyclopentadienes by heating dicyclopentadiene to a temperature of 150-220° C. and holding at this temperature for 15-360 minutes, cooling the mixture down to 20-50° C., sequentially adding the following components to the resulting mixture of oligocyclopentadienes:

• at least one polymer stabilizers selected from the following compounds:
• tetrakis[methylene(3,5-di-tert-butyl-4-hydroxyhydrocinnamate)]methane, 2,6-di-tert-butyl-4-(dimethylamino)phenol, 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate, 3,5-di-tert-butyl-4-hydroxyanisole, 4,4′-methylenebis(2,6-di-tert-butylphenol), diphenylamine, para-di-tert-butylphenylenediamine, N,N′-diphenyl-1,4-phenylenediamine, tris(2,4-di-tert-butylphenyl)phosphite, tris(nonylphenyl)phosphite, bis(2,2,6,6-tetramethyl-4-piperidinyl)sebacate, bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl)sebacate, bis(1-methyl-2,2,6,6-tetramethyl-4-piperidinyl)sebacate, 2-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)-4-methylphenol, and 2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenyl)phenol;
• at least one radical initiators selected from the following compounds or mixtures thereof:
• di-tert-butyl peroxide, dicumyl peroxide, 2,3-dimethyl-2,3-diphenylbutane, and triphenylmethane;
• and a catalyst which is a compound of the following general formula:
• wherein a substituent L is selected from the following group:
• wherein the components of the polymer matrix are present in the following amounts, wt. %:
• the at least one polymer stabilizer 0.1-3;
• the at least one radical initiator 0.1-4;
• the catalyst 0.001-0.02;
• the mixture of oligocyclopentadienes being the balance,
• the resulting polymer matrix is held at a temperature of 20-50° C. for 1-40 minutes, and thereafter is introduced as a laminar flow into an aqueous solution preheated to a temperature not lower than that of the matrix, said aqueous solution containing a surfactant which is cetyltrimethylammonium chloride or sodium dodecyl sulfate or ammonium lauryl sulfate or sodium lauryl sarcosinate or octenidine hydrochloride or benzalkonium chloride;
• while constantly stirring, the aqueous solution is heated up to 50-100° C., while still continuing stirring for 1-60 minutes;
• microspheres formed are separated from the aqueous solution, are heated in an inert gas atmosphere to a temperature of 150-340° C. and are held under said atmosphere at this temperature for 1-360 minutes.