FIELD: chemistry.
SUBSTANCE: invention relates to polymer compositions suitable for making articles by foaming. Disclosed is a polymer composition for foaming, containing the following components (wt. %): A. powdered or granular propylene homopolymer, or random copolymer of propylene with ethylene and/or higher α-olefins, or block copolymer of propylene with ethylene and/or higher α-olefins, or combinations thereof (48.5–99.4765); B. coagent (COAG) or a mixture of COAG, which are vinyl monomers (0.5–3); C. peroxide initiator (0.001–1.0); D. hindered cycloaliphatic amine stabilizer (HALS) (0.0025–1.5); E. antioxidant and/or heat stabilizer (0.02–1.0); F. polyolefin elastomer (0–25); G. other additives (0–20). Also disclosed is a method of producing said composition, use thereof and obtained foamed article.
EFFECT: obtaining a polypropylene composition with high melt strength, which enables to obtain foamed articles with improved foam shape stability and uniformity thereof.
100 cl, 1 dwg, 5 tbl, 40 ex
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