| 摘要 |
The present invention relates to a composition comprising (i) a crosslinkable polyolefin with hydrolysable silane groups (A), (ii) a silanol condensation catalyst (B), and (iii) a silicon containing compound (C) according to the formula (R1)x[Si(R2)yR3)z]m (I) wherein R1, which may be the same or different if more than one such group is present, is a monofunctional, or, if m=2, is a bifunctional, hydrocarbyl residue comprising from 1 to 100 carbon atoms and at least one heteroatom; R2, which may be the same or different if more than one such group is present, is a hydrocarbyloxy residue comprising from 1 to 100 carbon atoms; R3, is —R4SiR1pR2q, wherein p is 0 to 3, q is 0 to 3, with the proviso that p+q is 3, and R4 is —(CH2)rYs(CH2)t— where r and t independently are 1 to 3, s is 0 or 1 and Y is a difunctional heteroatomic group selected from —O—, —O—(CO)—, —NH—, —NH2, —NH—(CO)—NH2, —NH—(CO)—OCH3, an epoxy group, a carbamate group, —S—, —SO—, —SO2—, —NR—, —PR—, where R is a hydrocarbon or a hydrogen and where R1 and R2 are as previously defined; and x is 0 to 3, y is 1 to 4, z is 0 or 1, with the proviso that x+y+z=4; and m=1 or 2; to an article, in particular a wire or cable, comprising such a composition, and to the use of such a composition for the production of an article. The present invention further relates to the use of silicon containing compound (C) according to the formula (I) given above as a processing aid in the compounding of polyolefin compositions and as a surface smoothening agent in polyolefin compositions. Finally, the present invention relates to the use of a silicon containing compound (C) according to the formula (I) given above as a drying agent for polyolefin compositions, as a corrosion inhibitor in polyolefin compositions comprising a Brönsted acid and as a pH controlling agent in polymer compositions comprising a Brönsted acid.
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