Polypropylene-based composition for fire resistant plastic material
OwnerGerard Moraineinventor
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Abstract
The invention relates to a polypropylene-based composition for a fire-resistant plastic material. It comprises 80.5 to 93.5% in mass of polypropylene, 8 to 15% in mass of flame retardant, 0.5 to 4% of an additive encompassing an anti-ultraviolet component. The polypropylene is a copolymer constituted by blocks of polypropylene having a specific mass of around 900 kg/m3 and a Shore hardness of around 60. The flame retardant is an antimony trioxide and bromine-based composition and the additive is constituted by a polypropylene base encompassing an anti-ultraviolet component, a mixture of pigments and an admixture. Application to the manufacture of extrusion blow-moulded parts.
Claims19
A polypropylene-based composition for fire-resistant plastic material, wherein it comprises:
- 80.5 to 93.5% in mass of polypropylene,
- 8 to 15% in mass of flame retardant,
- 0.5 to 4% of an additive encompassing an anti-ultraviolet component and a colorant.
A composition for a plastic material according to one of the above claims, wherein it incorporates 81% in mass of polypropylene copolymer, 15% in mass of flame retardant and 4% in mass of additive.
An extrusion blow-moulding process for a fire resistant plastic material, wherein a composition such as that defined previously is used and wherein a screw temperature profile of 180 to 190° C. with a peripheral spin speed of 0.2 m/s is adopted.
A polypropylene-based composition for a fire-resistant plastic material, wherein it comprises:
- 80.5 to 93.5% in mass of polypropylene,
- 8 to 15% in mass of flame retardant,
- 0.5 to 4% of a first additive encompassing an anti-ultraviolet component and a colorant, and
- 4 a 10% of a second additive based on silicon compounds enhancing fire resistance.
Dependencies are inferred from the claim text.