发明名称 |
VERFAHREN ZUR WIEDERVERWENDUNG VON GEGENSTÄNDEN AUS VINYLPOLYMEREN |
摘要 |
<p>Process for recycling an article based on at least one vinyl chloride or vinylidene chloride polymer, according to which: (a) the article is cut up into fragments with a mean size of 1 cm to 50 cm in the case where it would exceed these sizes; (b) the article fragments are brought into contact with an azeotropic or quasiazeotropic mixture of water and of a solvent capable of dissolving the polymer, at a temperature of at least 120° C.; (c) the polymer dissolved in the solvent is precipitated by a reduction in pressure and by injection of steam into the solution thus obtained, which additionally results in the entrainment of the solvent-water azeotrope and thus leaves a mixture remaining which is essentially composed of water and of solid polymer particles; (d) the polymer particles are collected.</p> |
申请公布号 |
DE60012778(D1) |
申请公布日期 |
2004.09.09 |
申请号 |
DE2000612778 |
申请日期 |
2000.09.18 |
申请人 |
SOLVAY (SOCIETE ANONYME), BRUESSEL/BRUXELLES |
发明人 |
VANDENHENDE, BERNARD;YERNAUX, JEAN-MARIE |
分类号 |
C08J3/14;C08J11/08;(IPC1-7):C08J11/08;C08L27/04 |
主分类号 |
C08J3/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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