Patent ID: 8097679
Filing Date: 2012-01-17
Classification: C08L

Abstract:
1. A 1-butene polymer composition comprising: a) from 10% to 90% by weight of an isotactic 1-butene homopolymer or a copolymer of 1-butene and ethylene containing from 0 to 3% by mol of ethylene derived units and/or a copolymer of 1-butene and propylene containing from 0 to 15% by mol derived units, having the following features: i) isotactic pentad (mmmm) measured by ii) melting point (TmII) higher than 90° C.; and iii) intrinsic viscosity (IV) measured in tetrahydronaphthalene (THN) at 135° C. is between 0.5 dl/g and 5.0 dl/g; b) from 90% to 10% by weight of a copolymer of 1-butene and at least a C