OLEFIN RESIN AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2018 - IPC C08F210/16 C08F210/02 C08F4/646 C08F4/6592 C08F255/02 C08F290/02 

FIELD: chemistry.

SUBSTANCE: invention relates to an olefin resin and a process for its preparation. Such olefin resin contains olefin polymer (R1). Above olefin polymer consists of a polymer chain and a side polymer chain. Above olefin resin satisfies requirements (I)–(V). I) melting peak (T_pl) is 60–130 °C and heat of fusion ΔH at the peak of melting is 5–150 J/g. II) percentage of E (% by weight) soluble in o-dichlorobenzene at 20 °C or lower part and heat of fusion ΔH meet certain requirements. III) glass transition temperature T_from is minus 80–30 °C. IV) spin-spin relaxation time T₂ of the most highly mobile component, obtained by means of a four-component approximation by the Lorentz function, performed for the free-induction decay curve is 150–500 msec and the relative content of this component is 15–50 %. V) characteristic viscosity [η], measured in decalin at 135 °C is 0.1 to 12 dl/g.

EFFECT: technical result is an improvement in the heat resistance and a decrease in the stickiness of the olefin resin, which has excellent optical properties and frost resistance, as well as an improved balance between these physical properties.

6 cl, 7 dwg, 9 tbl, 12 ex