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US 8,710,126 B2Granted
Flame-proofed thermoplastic compositions
AssigneeRhodia Operations
InventorsSilvia Angeli, Xavier Couillens, Michelangelo Amorese
Life of this patent
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Abstract
Flame-proofed thermoplastic compositions include organophosphorus compounds as flame retardants; thermoplastic articles shaped therefrom do not experience deterioration of the appearance of the surfaces thereof by corrosion or deposition.
Claims5
A method of reducing at least one of corrosion of a metal part and deposition of a flame retardant on a surface of a metal part, said method comprising:
- shaping a thermoplastic matrix comprising at least one phosphinic acid salt of formula (I):
- in which:
- R1 and R2, which may be identical or different, are each a linear or branched alkyl radical having from 1 to 6 carbon atoms, and/or an aryl radical;
- M is a calcium, magnesium, aluminum and/or zinc ion;
- and
- Z is 2 or 3, by a plastic conversion or forming technique selected from the group consisting of extrusion, molding and injection, thereby obtaining a thermoplastic shaped part in a solid state;
- and
- placing said thermoplastic part in a solid state in contact with, or within approximately 1 cm of said metal part in a solid state.
5 more elements
Dependencies are inferred from the claim text.