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1.发明授权Recycle of terephthalic acid in the production of a bis(2-hydroxyalkyl) terephthalate 失效二辛酸在生产BIS（2-羟基甲基）三苯甲酸酯中的回收率
公开(公告)号：US3590070A
公开(公告)日：1971-06-29
申请号：US3590070D
申请日：1968-06-03
Applicant: CELANESE CORP
Inventor： MARTIN PRESTON K , MIREUR JOHN P
Abstract: A PROCESS FOR REACTING TEREPHTHALIC ACID WITH AN ALKYLENE OXIDE IN AN INERT HALOHYDROCARBON OR ALKYLBENZENE LIQUID REACTION MEDIUM WHEREIN THE TEREPHTHALIC ACID-CONTAINING WETTED SOLIDS SEPARATED FROM THE REACTION ZONE ARE RECYCLED BY SLURRY THE WETTED SOLIDS IN THE LIQUID REACTION MEDIUM AND PUMPING THEM TO THE REACTION ZONE. IN RECYCLING THE WETTED SOLIDS OF THE SLURRY, CARE MUST BE TAKEN TO AVOID TEMPERATURES OF 90-105*C. IN THE CASE OF AN ALKYLBENZENE LIQUID MEDIUM OR 80 TO 100*C. WHEN USING A HALOHYDROCARBON LIQUID MEDIUM.
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