Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Giuseppe Marchionni0
Pier Antonio Guarda0
Date of Patent
April 29, 2008
0Patent Application Number
110639960
Date Filed
February 24, 2005
0Patent Primary Examiner
Patent abstract
Peroxidic perfluoropolyethers having formula:X1—O(CF2O)n1(CF2CF2O)m1(CF2(CF2)zCF2O)p1(O)h—X2 (I)wherein:X1 and X2, equal to or different from each other, are chain end groups selected between —CF2COF and —COF;n1, m1, p1 and h are integers such that the number average molecular weight is in the range 700-100,000;z=1 or 2;with the proviso that:the m1/n1 ratio is between 0.2 and 10;the p1/(n1+m1) ratio is lower than 0.05;the h/(n1+m1+p1) ratio is such that the PO content, defined as grams of active oxygen/100 g of compound, is in the range 0.8-4.5, preferably 1.4-3.8;the perfluorooxyalkylene units being statistically distributed along the polymeric chain.
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