COATING COMPOSITION BASED ON FLUORINATED POLYMERS, TO BE USED AS A PRIMER

A composition suitable to form coating films on metal substrates, in particular acting as a primer, comprising an aqueous dispersion of a tetrafluoroethylene polymer and/or copolymer, containing phosphate ions and other anions of mineral acids and furthermore Mg and/or Mn in the form of divalent cat...

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Bibliographic Details
Main Authors VISCA, MARIO, TENTORIO, ANGELO, FONTE, ALBERTO
Format Patent
LanguageEnglish
French
Published 27.07.1993
Edition5
Subjects
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Summary:A composition suitable to form coating films on metal substrates, in particular acting as a primer, comprising an aqueous dispersion of a tetrafluoroethylene polymer and/or copolymer, containing phosphate ions and other anions of mineral acids and furthermore Mg and/or Mn in the form of divalent cations, the phosphate anion amount being such that, expressed as phosphorus/dry polymer weight ratio, it ranges from 0.005 to 0.15, and the amount of Mg ions and/or Mn ions being such that the Mg+Mn/P ratio expressed in atoms ranges from 0.1 to 2.
Bibliography:Application Number: CA19870546951