| 摘要 |
<p>The invention relates to halogen-free, flame-proof polymer foams containing at least one cyclic or alicyclic oligophosphorus compound as the flame proofing agent, and to a method for the production thereof. Suitable oligophosphorus compounds, for example, are those having structures Ia, Ib, or Ic: Another group of suitable oligophosphorus compounds has one of the following structures IIa, IIb, or IIc: Furthermore, cyclic oligophosphorus compounds of the following structure III are suitable: The radicals R1-R5 are independently selected from among the group consisting of C1-C16-alkyl, C1-C16-alkenyl, C1-C16-alkoxy, C1-C16-alkenyloxy, C3-C10-cycloalkyl, C3-C10-cycloalkoxy, C6-C10-aryl, C6-C10-aryloxy, C6-C10-aryl-C1-C16- alkyl, C6-C10-aryl-C1-C16- alkoxy, NR2R3, COR2, COOR2 and CONR2R3, and the radicals X1, X2 and X3 independently denote O or S.</p> |
