Flameproof moulding compositions based on polyolefins

Abstract

Abstract Improved 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. The improved moulding compositions contain as a stabilizer A. between about 1 and 10 weight % of amidosulfonic acid or ammonium bisulfate, based on the total quantity of the flame-retardant ingredients, or B. between about 5 and 15 weight % of a paraffin oil having a density between about 0.83 and 0.88 g/cc and a viscosity between about 15 and 380 centipoises, or of a mineral oil boiling within the range 170° and 350°C, or of a silicon oil, based on the quantity of red phosphorus, or C. between about 20 and 50 weight % of pentaerythritol, based on the quantity of organic nitrogen compound.

Inventors

• 👤 Franz-Josef Dany
• 👤 Joachim Wortmann
• 👤 Peter Munch
• 👤 Gunther Braun
• 👤 Rudolf Kern

Bibliographic Details