CATALYTIC SYSTEM AND METHOD OF PRODUCING REACTOR POWDER OF ULTRAHIGH-MOLECULAR-WEIGHT POLYETHYLENE FOR ULTRAHIGH-STRENGTH ULTRAHIGH-MODULUS ARTICLES VIA COLD FORMING Russian patent published in 2012 - IPC C08F4/642 C07F7/28 C08F110/02 

FIELD: chemistry.

SUBSTANCE: invention relates to synthesis of ultrahigh-molecular-weight polyethylene (UHMWPE) with a special morphology and making ultrahigh-strength and high-modulus fibres and belts for making ropes, nets, helmets, body armour and other protective materials therefrom. Described is a catalytic system based on oxyallyl group-functionalised bis-(phenoxy-imine) complexes of titanium chloride with the general structure I-II, to obtain reactor powder of UHMWPE, which can be processed into ultrahigh-modulus ultrahigh-strength fibres and belts via cold forming, having the following structure: , where (I) R¹-^tBu, R²-CH₃O; (II) R¹ - isopropylbenzyl, R²-CH₃. The ethylene polymerisation method is carried out in the presence of said catalytic system. The invention also relates to a method for cold forming the reactor powder of UHMWPE, obtained from polymerisation of ethylene in the presence of a catalytic system having the following structure: , where (I) R¹-^tBu, R²-CH₃O; (II) R¹ - isopropylbenzyl, R²-CH₃; (IV) R¹ - isopropylbenzyl, R²-H.

EFFECT: optimum structure of the obtained UHMWPE; the obtained UHMWPE is suitable for making articles through cold forming.

6 cl, 1 tbl, 19 ex