POLYOLEFINIC COMPOSITIONS ENDOWED WITH A HIGH IMPACT STRENGTH

Described are polyolefinic compositions endowed with a high impact strength, comprising: a) 35-45% by weight of an ethylene-propylene copolymer containing from 4 to 10% by weight of ethylene and exhibiting a melt flow rate of 10 to 20 g/10 minutes at 230 DEG C and 2.16 kg; b) 35-45% by weight of an...

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Bibliographic Details
Main Authors FEDERICO MILANI, PAOLA MASSARI, DOMENICO LORI
Format Patent
LanguageEnglish
Published 14.01.1993
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:Described are polyolefinic compositions endowed with a high impact strength, comprising: a) 35-45% by weight of an ethylene-propylene copolymer containing from 4 to 10% by weight of ethylene and exhibiting a melt flow rate of 10 to 20 g/10 minutes at 230 DEG C and 2.16 kg; b) 35-45% by weight of an ethylene-propylene copolymer containing from 4 to 10% by weight of ethylene and exhibiting a M.F.R. of 35 to 45 g/10 minutes at 230 DEG C and 2.16 kg; c) 10-30% by weight of an ethylene/propylene/ (diene) elastomer containing from 40 to 55% by weight of propylene and from 0 to 5% by weight of a diene monomer, which is amorphous under X-ray diffraction and is characterized by: - ( alpha 2 + alpha 4) higher than 16% - (R1 x R2) lower than 0.5 - Mw/Mn lower than 3 - Mooney viscosity (ML 1 + 4, 100 DEG C) from 30 to 38 - / eta / from 1.5 to 2 dl/g, measured in tetrahydronaphthalene at 135 DEG C. e
Bibliography:Application Number: AU19900063190