Polypropylene composition with a high content of heavy mineral filler(s), suitable for coating metal pipes
AssigneeMontell North America Inc.
InventorsGian L. Rigosi, Roberto Marzola
Life of this patent
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Abstract
Polymer composition comprising a propylene polymer matrix containing (percentages by weight with respect to the total composition): A) 60-90% of one or more heavy mineral fillers, the specific weight of which is or are greater than or equal to 3; and B) 0.1-4% of a compatibilizer for the filler(s); where said compositions has a MFRL ranging from 1 to 10 g/10 minutes, an elongation at break ranging from 1.5 to 100%, and flexural modulus ranging from 3,000 to 10,000 Mpa.
Claims6
A composition consisting essentially of a propylene polymer matrix containing (percentages by weight with respect to the total composition):
- A) 60-90% of one or more heavy mineral fillers having a specific weight greater than or equal to 3;
- B) 0.1-4% of a compatibilizer for the filler(s);
- said composition having a MFRL ranging from 1 to 10 g/10 minutes, an elongation at break ranging from 1.5 to 100% and flexural modulus ranging from 3,000 to 10,000 MPa.
Dependencies are inferred from the claim text.