发明名称 |
Process including depolymerization in polyester reactor for recycling polyester materials |
摘要 |
Previously used poly(ethylene terephthalate) polyester materials and copolymers thereof, and in particular postconsumer polyester materials, are depolymerized and repolymerized to produce bottle grade polymer containing up to 75% of the previously used material. The process involves the solubilization and depolymerization of the previously used polyester material in a transesterification and/or polymerization mixture containing dimethylterephthalate, ethylene glycol and transesterification products thereof.
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申请公布号 |
US5559159(A) |
申请公布日期 |
1996.09.24 |
申请号 |
US19950570175 |
申请日期 |
1995.12.07 |
申请人 |
EASTMAN CHEMICAL COMPANY |
发明人 |
SUBLETT, BOBBY J.;CONNELL, GARY W. |
分类号 |
C08J11/22;(IPC1-7):C08J11/04 |
主分类号 |
C08J11/22 |
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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