| 摘要 |
<p>One-shot method for production of thermoplastic polyurethane elastomer with self-extinguishing properties, involves reacting a di-isocyanate with a polyol mixture containing a bis-(hydroxyorgano)-phosphine oxide. A one-shot method for the production of thermoplastic polyurethane elastomers (TPU) with self-extinguishing properties, optionally in presence of catalysts (E), involves reacting (A) di-isocyanate(s) with (B) polyol(s) with 1.8-3.0 Zerewitinoff-active hydrogens and a number-average molecular weight (M n) of 450-10000, (C) polyol(s) or polyamine(s) with 1.8-3.0 reactive hydrogens and an M n of 60-400 as chain extenders, (D) organic phosphorus compound(s) of formula HOR 2>P(O)(R 1>)R 3>OH (I) based on phosphine oxides, with 1.5-3.0 reactive H and an M n of 60-10000, in amounts of 0.1-20 wt.% based on the TPU, (F) 0-70 wt.% other fire retardants without reactive H atoms and (G) 0-20 wt.% other substances and additives, with an isocyanate index of 85-120 (100 times the ratio of NCO groups to total reactive H atoms). R 1>H, 1-24C alkyl, 6-20C aryl, 6-30C aralkyl or 6-30C alkylaryl (the last three all optionally substituted); R 2>, R 3>1-24C alkylene, 6-20C arylene, 6-30C aralkylene or 6-30C alkylarylene (the last three optionally substituted).</p> |
