Method of depolymerizing poly-ethylene terephthalate |
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| 申请号 | US3776945D | 申请日 | 1971-11-16 | 公开(公告)号 | US3776945A | 公开(公告)日 | 1973-12-04 |
| 申请人 | SIR SOC ITALIANA RESINE SPA; | 发明人 | LIGORATI F; AGLIETTI G; NOVA V; | ||||
| 摘要 | DIMETHYL TEREPHTHALATE AND ETHYLENE GLYCOL ARE RECOVERED FROM POLYETHYLENE TEREPHTHALATE BY DEPOLYMERISING IN METHANOL, INSTANTANEOUS EVAPORATION AFTER REMOVAL OF THE METHANOL, AND CONDENSATION OF THE VAPOURS IN COLD METHANOL. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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