Binders resistant to fouling and organisms present in an aqueous medium and process for their preparation
AssigneeUniversite de Provence
InventorsAlain Perichaud, Georges Sauvet
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Abstract
Binders comprising the association of chlorinated vinyl resins and quaternary ammonium salts are resistant to corrosion, fouling, and organisms in an aqueous medium. The binders are obtained by substituting the chlorines of the polymer with a molecule having a primary or secondary amine function and a tertiary amine function, and then quaternizing the tertiary amine function by an alkyl halide. The binders thus obtained are useful in the production of coatings resistant to fouling and organisms present in an aqueous medium, of bacterial anticorrosion coatings and coatings with fungicidal properties.
Claims17
A layer of coating comprising a binder which repels micro-organisms when said binder is in contact with an aqueous medium, said binder consisting essentially of a mixture of a chlorinated vinyl resin selected from the group consisting of polyvinyl chloride, postchlorinated polyvinyl chloride, polyvinylidine chloride and copolymers thereof, and chlorinated rubbers, and 10-20% by weight based on the weight of said resin of a quaternary ammonium salt having at least one substituent selected from the group consisting of linear alkyl and aryl long-chain carbon derivatives.
A binder capable of repelling micro-organisms when in contact with an aqueous medium, comprising a chlorinated vinyl resin selected from the group consisting of polyvinyl chloride, postchlorinated polyvinyl chloride, polyvinylidine chloride and copolymers thereof, and chlorinated rubbers, said vinyl resin having grafted thereon a quaternary ammonium salt by a non-hydrolyzable covalent bonding.
In an anti-fouling marine paint comprising a binder and a volatile carrier, the improvement wherein said binder comprises a mixture of a chlorinated vinyl resin selected from the group consisting of polyvinyl chloride, postchlorinated polyvinyl chloride, polyvinylidine chloride and copolymers thereof, and chlorinated rubbers, and 10-20% by weight based on the weight of said resin of a quaternary ammonium salt having at least one substituent selected from the group consisting of linear alkyl and aryl long-chain carbon derivatives.
Dependencies are inferred from the claim text.