发明名称 |
Method for alcoholysis of acrylonitrile-butadiene-styrene-containing polycarbonate compositions |
摘要 |
The disclosure provides a method for recovering a dihydroxy aromatic compound and a dialkyl carbonate from a polycarbonate-containing composition comprising a polycarbonate and acrylonitrile-butadiene-styrene. The method comprises heating the composition in the presence of an alcohol and a transesterification catalyst at a temperature of 70� C. to 200� C. and a pressure of 50 mbar to 40 bar in a reactor for a time sufficient to depolymerize the polycarbonate producing a dihydroxy aromatic compound and a dialkyl carbonate; removing the dihydroxy aromatic compound and the dialkyl carbonate from the reactor, the acrylonitrile-butadiene-styrene remaining as a coating on the surfaces of the reactor; adding a solvent to the reactor; and heating the solvent to remove the acrylonitrile-butadiene-styrene from the surfaces of the reactor. |
申请公布号 |
US8680226(B1) |
申请公布日期 |
2014.03.25 |
申请号 |
US201213723431 |
申请日期 |
2012.12.21 |
申请人 |
SAUDI BASIC INDUSTRIES CORPORATION |
发明人 |
BELL PHILIP WESLEY;STANISLAUS ALEXANDER;GANAPATHY BHOTLA VENKATA RAMANARAYANAN;GUNALE TUKARAM;JAYANNA DARSHAN |
分类号 |
C08G64/00;C08G63/02 |
主分类号 |
C08G64/00 |
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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