Expansion reservoir of polypropylene with glass fibers

A container prepared from a thermoplastic composition comprising

• from 70-95 wt. % based on the weight of the thermoplastic composition of a polypropylene composition having a total amount of comonomer of at most 3 wt. % based on the weight of the polypropylene composition, wherein the polypropylene composition comprises a random propylene copolymer having an ethylene content from 0.2-5 wt. % based on the weight of the random propylene copolymer and a melt flow index of at most 0.7 g/10 min determined in accordance with ISO 1133 (2.16 kg, 230° C.),
• from 5-15 wt. % based on the weight of the thermoplastic composition of glass fibres having a length of from 1-10 mm and a diameter of from 5-30 μm,
• from 0-3 wt. % based on the weight of the thermoplastic composition of additives
• wherein the thermoplastic composition has a melt flow index of less than 0.3 g/10 min determined in accordance with ISO 1133 (2.16 kg, 230° C.);
• wherein the container is a cooling fluid expansion reservoir in automotive applications.

An internal combustion engine, comprising:

• a cooling fluid expansion reservoir, wherein the cooling fluid expansion reservoir is prepared from a thermoplastic composition comprising
• from 70-95 wt. % based on the weight of the thermoplastic composition of a polypropylene composition having a total amount of comonomer of at most 3 wt. % based on the weight of the polypropylene composition, wherein the polypropylene composition comprises a random propylene copolymer having a comonomer content from 0.2-5 wt. % based on the weight of the random propylene copolymer and a melt flow index of at most 0.7 g/10 min determined in accordance with ISO 1133 (2.16 kg, 230° C.),
• from 5-30 wt. % based on the weight of the thermoplastic composition of reinforcing fibres,
• from 0-5 wt. % based on the weight of the thermoplastic composition of additives,
• wherein the thermoplastic composition has a melt flow index of less than 0.3 g/10 min determined in accordance with ISO 1133 (2.16 kg, 230° C.).