Flameproof moulding compositions based on polyolefins
AssigneesHoechst Aktiengesellschaft, Ruhrchemie Aktiengesellschaft
InventorsFranz-Josef Dany, Joachim Wortmann, Peter Munch, Gunther Braun
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Abstract
Flameproof moulding compositions, which are based on polyolefins and made from a pulverulent blend comprising a polyolefin as its essential ingredient and a plurality of flame-retardant ingredients. The flame-retardant ingredients comprise red phosphorus and at least one organic nitrogen compound which carbonizes after inflammation. The moulding compositions contain the flame-retardant ingredients in a total proportion of at most about 30 weight %. Red phosphorus and organic nitrogen compound are used in a quantitative ratio between 99:1 and 1:99.
Claims4
A flameproof moulding composition comprising a pulverulent blend of a polyolefin and a plurality of flame retardants consisting of, in addition to red phosphorus, polyacrylonitrile having a molecular weight of 15,000 - 250,000 and a particle size of 75-200 microns, the amount of flame retardants being about 10-30 weight % of said composition and the quantitative ratio of red phosphorus and polyacrylonitrile being 70:30 - 30:70.
Dependencies are inferred from the claim text.