AERATED POLYPROPYLENE COMPOSITIONS WITH SPECIFIC EMISSION PROFILES Russian patent published in 2022 - IPC C08L23/10 C08L23/12 C08K5/20 

FIELD: chemistry.

SUBSTANCE: present invention relates to a polypropylene composition for the production of cast products under pressure for use in the field of the car industry. This polypropylene composition contains: medium volatile organic condensed oligomers (FOG, VDA 278 October 2011) in amount from 50 μg/g to about 170 μg/g and volatile organic compounds (VOC, VDA 278 October 2011) in amount of less than 20 μg/g. The mass ratio of the specified medium volatile organic condensed oligomers compared to the specified volatile organic compounds is more than about 5.0. The claimed polypropylene composition has MFR₂ (ISO 1133, 230°C, 2.16 kg) of 10g/10 minutes or higher. A bending elasticity module of the polypropylene composition (ISO 178, when using samples of 80 x 10 x 4 mm, obtained by casting under pressure, obtained according to ISO 294-1:1996) is from 1000 to 6000 MPa. The total amount of an agent reducing friction, which is fatty acid amide, is at least 500 ppm.

EFFECT: development of materials with a specific emission profile with low VOC and FOG levels.

11 cl, 5 tbl, 5 ex