Perfluoropolyethers used as fluids for testing in

专利名称：Perfluoropolyethers used as fluids for

testing in electronic field

发明人：Gianangelo Bargigia,Gerardo

Caporiccio,Claudio Tonelli,LucianoFlabbi,Giuseppe Marchionni

申请号：US07/513690申请日：19900424公开号：US05083082A公开日：19920121

摘要：Perfluoropolyethers having an average molecular weight higher than 390 andrespectively having a kinematic viscosity lower than 8.5 cSt (at 20. degree. C.), and such asto distill by not more than 10% at temperatures lower than 140° C., and by at least 90%at temperatures not higher than 260° C., or, in the case in which the perfluoropolyetherdoes not contain CF (CF.sub.3) CF.sub.2 O units, having a viscosity lowr than 18 cSt (at 20°C.), and such as to distill by not more than 10% at temperatures lower than 140°C., andby at elast 90% at temperatures not higher than 280° C., are used as the only high-temperature and low-temperature working fluid in the Thermal Shock Tests to which theelectronic components are submitted, and at the same time are advantageously used inother tests used in the electronic industry, such as the Gross Leak Test and the Burn inTest, allowing the operators in this field to use only single fluid for a whole set of uses.

申请人：MONTEDISON S.P.A.

代理机构：Morgan & Finnegan

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