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US 2002/0160122 A1Published application
Process for coating metal surface with a polyolefin composition by flame spraying
OwnerGian Luigi Rigosi, Roberto Marzolainventors
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Abstract
Polyolefin compositions in powder form suited for metal coating, comprising (percentage by weight): 1) from 1% to 40% of hollow microspheres; 2) from 60% to 99% of a composition comprising: a) from 25% to 95% of polypropylene, polyethylene or crystalline propylene copolymers or mixtures thereof; b) from 0% to 70% of an elastomeric copolymer; c) from 0.5% to 10% of propylene or polyethylene modified with polar groups; d) from 0% to 10% of titanium dioxide.
Claims20
Polyolefin composition comprising (percentages by weight):
- 1) from 1% to 40% of hallow microspheres;
- 2) from 60% to 99% of a polyolefin composition comprising (percentages by weight):
- a) from 25% to 95% of polypropylene homopolymer, polyethylene homopolymer, or a propylene/ethylene, propylene/C4-C10 α-olefin, or propylene/ethylene/ C4-C10 α-olefin crystalline random copolymer, or mixtures thereof;
- b) from 0% to 70% of an ethylene-propylene or ethylene/C4-C10 α-olefin elastomeric copolymer, optionally containing minor quantities of a diene;
- c) from 0.5% to 10% of polypropylene or polyethylene modified with polar groups in quantities ranging from 0.1% to 10%;
- d) from 0% to 10% of titanium dioxide;
- said polyolefin composition 2) having MFR (ASTM D-1238, condition L) from 2 to 150 g/10 min., and being in powder form with not more than 3% of the granules having a diameter greater than 600 micrometers.
4 more elements
Dependencies are inferred from the claim text.