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    • 10. 发明申请
    • CURED UNSATURATED POLYESTERS GLYCOLYSIS FOR RECYCLE REACTANT
    • 固化不饱和聚酯树脂回收再利用
    • WO1994025517A1
    • 1994-11-10
    • PCT/US1994004864
    • 1994-05-03
    • ASHLAND OIL, INC.TUFTS, Timothy, A.TSAI, Chung-ChiehHUPP, Stephen, S.
    • ASHLAND OIL, INC.
    • C08J11/24
    • C08J11/24C08J11/06C08J2367/06Y02P20/582Y02W30/701Y02W30/706
    • The present invention is directed to a method for treating cross-linked (cured) filled or unfilled unsaturated polyester for deriving an alcohol recycle reactant useful in the synthesis of alcohol-formed derivative products. The first step of the method is the attrition of the cured unsaturated polyester to form particulates thereof. In the next step of the process, at least a fraction of any filler or fiberglass in the cured unsaturated polyester is separated to form a cured unsaturated polyester regrind. The next step is the subjecting of the cured unsaturated polyester regrind to agitated, uncatalyzed or catalyzed glycolysis in the presence of excess glycol and, optionally, a transesterification catalyst under agitation at elevated transesterification temperature. The final step of the process is the recovery of the recycle alcohol reactant for use in the synthesis of alcohol-formed derivative products. The glycolysis reaction is conducted under agitation in order to keep the cured unsaturated polyester regrind solids suspended during the glycolysis reaction. In this regard, establishment of shear conditions should aid in the glycolysis step of the process.
    • 本发明涉及一种用于处理交联(固化的)填充或未填充的不饱和聚酯以得到可用于合成醇形成的衍生产物的醇再循环反应物的方法。 该方法的第一步是固化的不饱和聚酯的磨损以形成其颗粒。 在该方法的下一步骤中,将固化的不饱和聚酯中的任何填料或玻璃纤维的至少一部分分离以形成固化的不饱和聚酯再研磨物。 下一步是在过量的二醇和任选的酯交换催化剂的搅拌下,在升高的酯交换温度下使经固化的不饱和聚酯再研磨物进行搅拌,未催化或催化的糖酵解。 该方法的最后一步是回收用于合成醇形成衍生产物的循环醇反应物。 在搅拌下进行糖酵解反应,以便在糖酵解反应期间保持固化的不饱和聚酯再研磨固体。 在这方面,剪切条件的建立应有助于该过程的糖酵解步骤。