THERMOPLASTIC ELASTOMER COMPOSITION Russian patent published in 2006 - IPC C08L9/02 C08K3/26 

FIELD: polymer materials.

SUBSTANCE: invention relates to olefin thermoplastic elastomers obtained by the method of "dynamic" vulcanization of ethylene-propylene-diene or butadiene-nitrile rubber jointly with polyolefins, which elastomers can be used in manufacture of technical rubber products as well as in fabrication of articles in automotive, cable, and shoe industries. Thermoplastic elastomer composition is made up of, wt %: isotactic polypropylene 20-40, synthetic rubber 44.9-73.2, organic peroxide 0.2-2.0, mineral oil 1-10. filler 0.4-5.0, melt flow-improving additive 0.5-1.0, 3,5-di-tert-butyl-4-hydroxyphenylpropionic acid pentaerythrityl ester (Irganox 1010), propionic acid 3,3-thio-bis(dioctadecyl) ester (Irganox PS 802), and 3,5-bis(1,1-dimethylethyl)-4-hydroxy-2,2-(3-(3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl)-1-oxopropyl) hydrazide (Irganox 1024). Composition contains low-density polyethylene with fluidity index between 7.0 and 100.0 g/10 min at 190°C and loading 2.16 kg as melt flow-improving additive. As cross-linking co-agent, composition may contain methacrylate or vinyl butyrate.

EFFECT: increased surface strength of molded products, improved abrasive resistance, and reduced scratch of products.

2 cl, 2 tbl, 18 ex