Optical elements comprising a polyfluoropolyether

专利名称：Optical elements comprising a

polyfluoropolyether surface treatment

发明人：Mark J. Pellerite,Susannah C. Clear,Cheryl L.

S. Elsbernd,Richard M. Flynn

申请号：US09698434申请日：20001027公开号：US06632508B1公开日：20031014

摘要：The present invention relates to optical elements comprising fluorochemicalsurface treatments. The invention further relates to materials such as retroreflectivesheetings, pavement markings and beaded projection screens comprising a binder andthe surface treated optical elements. The fluorochemical surface treatment issubstantially free of perfluoroalkyl groups having more than four carbon atoms.Preferably, the surface treatment is a polyfluoropolyether-based compound comprisingat least one polar group or polar group-containing organic radical.

申请人：3M INNOVATIVE PROPERTIES COMPANY

代理人：Carolyn A. Fischer

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