COMPOSITIONS OF ETHYLENE, PROPYLENE AND COPOLYMERS THEREOF FUNCTIONALISED/MODIFIED WITH MALEIC ANHYDRIDE Russian patent published in 2024 - IPC C08L23/08 C08L23/12 C08L31/04 C08K5/13 C08K5/14 C08K5/09 C08K5/524 C08C19/28 C08F8/46 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to polymer compositions based on polyolefins and their copolymers, functionalised/modified with maleic anhydride. Compositions obtained in this invention can be used as a compatibilizer (binding agent) for halogen-free polymer cable compositions, a compatibilizer (binding agent) for composite filled materials based on polyolefins, an impact strength modifier for polyamides. Compositions are obtained by method of industrial production of functionalised polymers, where polymer is subjected to chemical modification at temperature of 10–15 °C is lower than the softening temperature of the polymer without the use of reactive gases when mixed with a monomer, as well as with organic peroxide with their subsequent copolymerisation by method of surface-initiated polymerisation in melt in twin-screw extruder with simultaneous dosage of primary phenol and secondary phosphite antioxidants, wherein the chemical modification is carried out in the amorphous phase of the polymer. Initial composition of the polymer composition contains, in addition to polyolefin, an initiator in the form of an organic peroxide, maleic anhydride, primary phenol and secondary phosphite antioxidants.

EFFECT: wider range of equipment for said purpose.

11 cl, 5 dwg, 5 ex