Peroxidic perfluoropolyethers

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 among -CF2COF, -COF, -SO2F; n1, m1, p1 and h are integers such that the number average molecular weight is in the...

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Bibliographic Details
Main Authors GUARDA PIER ANTONIO, MARCHIONNI GIUSEPPE
Format Patent
LanguageEnglish
Published 08.12.2009
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC CHEMISTRY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary: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 among -CF2COF, -COF, -SO2F; 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.
Bibliography:Application Number: US20080099293