REINFORCED THERMOPLASTIC POLYOLEFIN COMPOSITION Russian patent published in 1999 - IPC

FIELD: chemical composition. SUBSTANCE: reinforced thermoplastic polyolefin composition comprises mineral filler and malaminesilane. Polyolefin comprises (A) from 30 to 98 wt. % of polyolefin having density of 0.94 g/cubic cm and melt fluidity index of less than 10 g/10 min selected from group consisting of ethylene homopolymers and ethylene copolymers with at least one other alpha-olefin containing from 3 to 10 carbon atoms, and filler comprises (B) from 70 to 2 wt.% of at least one metal carbonate relating to Group IIa of Periodic Table in the form of particles having size from 0.07 to 10 mcm and comprises (C) from 0.01 to 10 wt parts per 100 parts of (A)+(B) of malaminesilane of general formula: wherein R and R₁ are independently selected from hydrogen and alkyl radical containing from 1 to 8 carbon atoms; R₂ is hydrolyzable alkoxy group containing from 1 to 6 carbon atoms, or halogen atom; R is alkyl radical containing from 1 to 8 carbon atoms; X is radical of formula: or aromatic, cyclic aliphatic or heterocyclic divalent radical wherein R₄ is hydrogen atom or alkyl radical containing from 1 to 18 carbon atoms; n is integer of 1 to 4 and integer from 1 to 3 inclusively. EFFECT: improved properties of the composition at low temperatures. 6 cl, 6 ex, 1 tbl