| abstract |
Oriented composite polyester films comprising on at least one surface a coating for improving the slippery texture thereof, consisting of a grafted polymer comprising a core derived from a sulphonyloxy group polyester and polymer pattern grafts derived from at least one unsaturated ethylene nomoner and at least one unsaturated ethylene organosiloxane. The composite polyester films, according to the invention, are especially suitable for the manufacture of magnetic tapes.n[WO9010666A1] |