| abstract |
The present invention relates to a composition comprising (i) a crosslinkable polyolefln with hydrolysable silane groups (A), (ii) a Bronsted acid (B) as a silanol condensation catalyst, and (iii) a silicon containing compound (C) according to the formula (I): (R1)x[Si(R2)y(R3)z]m 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; R2, which may be the same or different if more than one such group is present, is a hydro carbyloxy 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-, -S-, -SO-, -SO2-, -NH-, -NR1- or -PR1- where R1 and R2 are as previously defined; and x is O to 3, y is 1 to 4, z is O 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. |