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OwnerRudolfus A.T.M. Van Benthem, Jacobus A. Loontjens +2inventors
InventorsRudolfus A.T.M. Van Benthem, Jacobus A. Loontjens, Patrick H.M. Hendriks, Bartholomeus J.M. Plum
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A powder paint binder composition is useful for the preparation of a powder paint composition which includes, as crosslinking agent, an aromatic bisoxazoline obtained by reacting an aromatic carboxylic acid or an ester thereof with an alkanolamine to obtain an hydroxylamide. The hydroxyalkylamide is converted into an aromatic bisoxazoline in the presence of a catalyst. The catalyst includes phosphinic acid, (C1-C26) alkyl phosphinic acid, (C6-C20) aryl phosphinic acid or an ester or an anhydride derived from one of these acids. Powder paint compositions including the powder paint binder composition form coatings by curing the powder paint. The aromatic bisoxazlines are also useful as chain-extending agents for polymers such as polyamides and polyesters.
A powder paint binder composition comprising a polymer and a crosslinking agent, wherein the crosslinking agent is an aromatic bisoxazoline obtained by reacting an aromatic carboxylic acid or an ester thereof, with an alkalonamine to obtain an hydroxylamide, and converting the hydroxylamide in the presence of a catalyst, to an aromatic bisoxazoline.
A polymer composition comprising a polymer and an aromatic bisoxazoline obtained by reacting an aromatic carboxylic acid or an ester thereof, with an alkalonamine to obtain an hydroxylamide, and converting the hydroxylamide in the presence of a catalyst, to an aromatic bisoxazoline.
A method for increasing molecular weight of a polymer which comprises chain-extending the polymer using an aromatic bisoxazoline obtained by reacting an aromatic carboxylic acid or an ester thereof, with an alkalonamine to obtain an hydroxylamide, and converting the hydroxylamide in the presence of a catalyst, to an aromatic bisoxazoline.
Dependencies are inferred from the claim text.