Cross-linked products with the structure of perfluoropolyethers having functional groups
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United States of America Patent
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Apr 14, 1992
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N/A
app pub date -
Apr 10, 1989
filing date -
Apr 11, 1988
priority date (Note) -
Expired
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Abstract
Cross-linked macromolecular products having the structure of perfluoropolyethers in which the cross-linking is due to C--C links between carbon atoms of different perfluoropolyether chains, said cross-linked products being obtained by treatment by means of U.V. radiations of the corresponding perfluoropolyethers containing at least three groups: ##STR1## arranged along the chain and at one or at both ends; the C--C link of cross-linking coming from the removal of two groups: ##STR2## of different perfluoropolyether chains.
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