ETHYLENE POLYMER COMPOSITION HAVING IMPROVED TENSILE PROPERTIES Russian patent published in 2019 - IPC C08F2/00 C08L23/06 C08L23/16 C08L23/08 

FIELD: chemistry.

SUBSTANCE: invention relates to the composition of ethylene polymer and its use for manufacture of products, such as cable sheaths and plastic parts of automobiles. Said composition of the polymer of ethylene contains: A) 25–75 % by weight ethylene polymer selected from ethylene homopolymers (A₁), copolymers of ethylene (A₂) with a content of not more than 10 % by weight of one or more olefin comonomers and mixtures of the indicated homopolymers and copolymers, and B) 25–75 % by weight of a copolymer of ethylene and propylene containing from 45 to 70 % by weight of ethylene. Said composition has a viscosity (0.01) of not less than 35,000 Pa s, which is a complex viscosity under shear conditions at an angular frequency of 0.01 radians per second, measured with a rotary conical viscometer at a temperature of 200 °C.

EFFECT: ethylene polymer composition according to the invention allows to obtain a favorable balance: tensile strength at the time of rupture, elongation by the time of rupture and permanent deformation under compression, while maintaining good thermoplasticity.

10 cl, 3 tbl