| 发明名称 |
VERFAHREN ZUR WIEDERVERWERTUNG VON ABFÄLLEN ODER ALTARTIKELN AUS VERNETZTEM KUNSTSTOFF, INSBESONDERE AUS POLYURETHAN ODER POLYHARNSTOFF. |
| 摘要 |
<p>The invention relates to a process for the recycling of waste or used articles made of crosslinked plastic, in particular polyurethane, involving the following process steps: a) the waste or used articles as raw material are comminuted, for example to give chips or granules, where the size of the comminuted raw material is </= 15 mm, in particular </= 5 mm; b) the comminuted raw material is treated for from 5 to 30 minutes in an apparatus which exerts thermomechanical load, in particular in a compounder, at an apparatus temperature of from 130 to 180 DEG C; c) for re-crosslinking, the degradation product is mixed with a polyfunctional isocyanate at a material temperature of </= 80 DEG C in a mixing apparatus, in particular in a low-temperature compounder, at an apparatus temperature of </= 30 DEG C; d) the reaction mixture is cooled immediately; e) the mixture is finally heated for from 5 to 20 minutes at from 130 DEG to 170 DEG C in a mould at a minimum pressing pressure of 100 bar, during which it is re-crosslinked. a</p> |
| 申请公布号 |
AT107567(T) |
申请公布日期 |
1994.07.15 |
| 申请号 |
AT19910101926T |
申请日期 |
1991.02.12 |
| 申请人 |
PHOENIX AKTIENGESELLSCHAFT |
发明人 |
MEISTER, BURKHARDT, DR., DIPL.-CHEM.;SCHAPER, HERBERT, DR., DIPL.-CHEM. |
| 分类号 |
B29B13/10;B29B17/00;B29C67/20;C08G18/08;C08J11/12;(IPC1-7):B29B17/00;B29K75/00 |
主分类号 |
B29B13/10 |
| 代理机构 |
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代理人 |
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| 主权项 |
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