POLYOLEFINIC COMPOSITIONS ENDOWED WITH A HIGH IMPACT STREGTH
Abstract Polyolefinic compositions endowed with a high im-pact stregth, comprising: a) 35-45% by weight of a C2/C3 copolymer containing from 4 to 10% by weight of C2 and exhibiting a melt flow rate (M.F. R.) from 10 to 20 g/10 minutes at 230°C and 2.16 kg; b) 35-45% by weight of a C2/C3 copolymer co...
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Main Authors | , , |
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Format | Patent |
Language | English French |
Published |
27.03.1991
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Edition | 5 |
Subjects | |
Online Access | Get full text |
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Summary: | Abstract Polyolefinic compositions endowed with a high im-pact stregth, comprising: a) 35-45% by weight of a C2/C3 copolymer containing from 4 to 10% by weight of C2 and exhibiting a melt flow rate (M.F. R.) from 10 to 20 g/10 minutes at 230°C and 2.16 kg; b) 35-45% by weight of a C2/C3 copolymer containing from 4 to 10% by weight of C2 and exhibiting a M.F.R. from 35 to 45 g/10 minutes at 230°C and 2.16 kg; c) 10-30% by weight of a C2/C3/(diene) elastomer containing from 40 to 55% by weight of C3 and from 0 to 5% by weight of a diene monomer, which is amorphous to X-rays and is characterized by : - .alpha. 2 + .alpha. 4 higher than 16% - R1 x R2 lower than 0.5 - M.W.D. lower than 3 - Mooney viscosity (ML 1 + 4, 100°C) from 30 to 38 - ? from 1.5 to 2 dl/g, measured in tetrahydronaph-thalene at 135°C. |
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Bibliography: | Application Number: CA19902026016 |