Hoechst Aktiengesellschaft

Werner Eberspach

Manfred Lysek

Daniel Scharf

Gunther Lenz

Flame-resistant polymeric compositions, preferably olefinic polymers and/or copolymers, containing 8 to 45% by weight of a flameproofing system. This flameproofing system comprises at least one phosphorus component and a monomeric triazinylpiperazine. The phosphours component is a free-flowing, pulverulent, sparingly water-soluble ammonium polyphosphate, while the triazinylpiperazine used is a pulverulent bistriazinylpiperazine.

Flame-resistant polymeric compositions

The invention relates to novel N,N'-bis-1,3,5-triazin-6-ylpiperazines of the formula ##STR1## in which X and Y are identical or different radicals --OR.sup.1, SR.sup.1 or --NR.sup.2 R.sup.3,

N,N'-bis-1,3,5-triazin-6-ylpiperazines, and processes for their

Self-extinguishing polyurethanes are obtained by stepwise polyaddition of diisocyanates or polyisocyanates with polyols with the addition of a flameproofing agent comprising a phosphorus component and a nitrogen component as synergists. While the phosphorus component used is an ammonium polyphosphate which is sparingly soluble in water and, if desired, has been microencapsulated with a melamine/formaldehyde resin, the organic nitrogen component is selected from the group consisting

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Frankfurt am Main, Germany

Werner Eberspach