| 摘要 |
The present invention relates to the use of a silicon containing compound as processing aid in the compounding of polyolefin compositions, wherein the silicon containing compound has a structure according to the formula
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ (R 1 ) x [Si(R 2 ) y (R 3 ) z ] m €ƒ€ƒ€ƒ€ƒ€ƒ(I)
wherein
R 1 , 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;
R 2 , 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;
R 3 , is -R 4 SiR 1 pR 2 q wherein
p is 0 to 3,
q is 0 to 3,
with the proviso that p + q is 3, and
R 4 is -(CH 2 ) r Y s (CH 2 ) t - where r and t independently are 1 to 3, s is 0 or 1 and Y is a difunctional heteroatomic group selected from -0-, -S-, -SO-, -SO 2 - -NH-, -NR 1 - or -PR 1 -, where R 1 and R 2 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,
and to the use of such a compound in the production of an article, in particular a wire or cable, comprising such polyolefin compositions. |
