Coatings based on polyesters from perfluoropolyethers
AssigneeAusimont S.p.A.
InventorsGiovanni Simeone, Fabrizio Mutta, Angelo Locaspi, Claudio Tonelli
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Abstract
Coatings obtainable from crosslinkable polyesters resins based on perfluoropolyethers obtainable from hydroxy-terminated PFPE, with acid anhydride and/or a diacid, a polyol with functionality higher than 2 and optionally in mixtures of diols having a functionality of 2, the resins being also even 70% weight/weight soluble in xylene.
Claims5
Coatings comprising cross-linkable resins based on fluorinated polyesters having a high functionality and having a fluorine content of about 0.5-40% by weight, the cross-linkable resins being soluble in xylene at 70% based on the weight of xylene, the cross-linkable resins being obtained by reacting (i) a hydroxy-terminated perfluoropolyether having a number average molecular weight from 400 to 3000, (ii) a compound containing from 3 to 20 carbon atoms selected from the group consisting of acid anhydrides, diacids, and mixtures thereof, (iii) a diol containing from 3 to 20 carbon atoms, and (iv) a polyol containing from 3 to 20 carbon atoms and having a functionality of three or greater.
Dependencies are inferred from the claim text.