ELASTOPLASTIC POLYOLEFIN COMPOSITIONS Possessing a LOW GLOSS

摘要

1. An elastoplastic polyolefin composition, including in wt.%:! A) 10-50% of a copolymer of propylene with one or more comonomers (comonomers) selected from ethylene and CH2 = CHR alpha-olefins, where R is alkyl with 2-8 carbon atoms, the copolymer containing from 1 to 8% comonomer ( comonomers); ! B) 50-90% of a copolymer of ethylene and (i) propylene or (ii) CH2 = CHR alpha olefins, where R is an alkyl radical with 2-8 carbon atoms or (iii) a combination thereof, optionally with minor amounts of a diene containing from 57 to 80% ethylene; ! in which the mass ratio B / XS of the content B of the copolymer component (B) to the XS fraction soluble in xylene at room temperature, both relative to the total mass (A) + (B), is 1.5 or less, and the intrinsic viscosity [η] said XS fraction is 3 dl / g or more. ! 2. The elastoplastic polyolefin composition according to claim 1, having an MFR value of from 0.01 to 10 g / 10 min. ! 3. The elastoplastic polyolefin composition according to claim 1, having a bending modulus equal to or lower than 200 MPa. ! 4. The elastoplastic polyolefin composition according to claim 1, having Shore D values equal to or lower than 35.! 5. The polymerization method to obtain an elastoplastic polyolefin composition according to claim 1, comprising at least two sequential stages, in which components (A) and (B) are obtained in separate successive stages, the process at each stage, except for the first stage, carried out in the presence of a polymer formed in the previous stage, and the catalyst used in the previous stage. ! 6. Industrial products including elastoplastic�