申请人:E. I. du Pont de Nemours and Company
公开号:US06703533B1
公开(公告)日:2004-03-09
A process is disclosed for producing (CF3)2C═CH2, CF3CH═CF2, CF2═C(CF3)OCF2CHF2 and C6H5C(CF3)═CF2. The process involves contacting the corresponding fluorocarbon starting material selected from (CF3)2CFCH2F, (CF3)2CHF, (CF3)2CFOCF2CHF2 and C6H5CF(CF3)2, in the vapor phase, with a defluorination reagent selected from carbon, copper, iron nickel and zinc at an elevated temperature of at least 300 ° C.
公开了一种生产(CF3)2C═CH2,CF3CH═CF2,CF2═C(CF3)OCF2CHF2和C6H5C(CF3)═CF2的过程。该过程涉及将相应的氟碳起始材料(CF3)2CFCH2F、(CF3)2CHF、(CF3)2CFOCF2CHF2和C6H5CF(CF3)2,在气相中与一种脱氟试剂接触,所述脱氟试剂选择自碳、铜、铁、镍和锌,在至少300°C的高温下进行。