Polypropylene compositions

Details Polypropylene compositions Polypropylene compositions

1979-09-26

1981-03-31

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260DIG24, C08K 334

Patent

active

042592305

ABSTRACT:
Polypropylene compositions having high ignition resistance, flex modulus, and impact resistance are obtained by blending polypropylene homopolymer, a propylene/ethylene copolymer, an EPM or EPDM elastomer having an ethylene content of about 50-65 weight percent and a Mooney viscosity of 35-80, mica, a commercial chlorinated fire retardant, and antimony trioxide in defined proportions. These compositions are particularly suitable for electrical wire insulation and other applications where toughness, stiffness, and ignition resistance are important.

REFERENCES:
patent: 3354239 (1967-11-01), Short
patent: 3562790 (1971-02-01), Coover et al.
patent: 3668281 (1972-06-01), Drake
patent: 4098848 (1978-07-01), Morris
patent: 4153587 (1979-05-01), Yui
patent: 4211690 (1980-07-01), Asano et al.
Okuno et al.; Mica Reinforced Polypropylene; "Polymer Engineering and Science"; 4/75; vol. 15, No. 4.

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