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US 7,598,299 B2Granted
Anti-fouling compositions comprising a polymer with salt groups
AssigneeAkzo Nobel Coatings International B.V.
InventorClayton Price
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Abstract
The invention relates to the use of a polymer including salts of amine-functional groups and/or salts of phosphine-functional groups bound (pendant) to the backbone of the polymer, said salts including as counter-ion the anionic residue of an acid having an aliphatic, aromatic, or alkaryl hydrocarbon group comprising at least 5 carbon atoms in antifouling compositions. The invention further relates to antifouling compositions including such a polymer.
Claims10
An antifouling coating composition comprising:
- a rosin as binder material, and
- a salt group-comprising polymer obtained by a process comprising the steps of:
- reacting an acid having an aliphatic, aromatic, or alkaryl hydrocarbon group comprising 5 or more carbon atoms with an amine- or phosphine-functional monomer of formula:
- wherein
- Y is O or NH,
- Z is N or P,
- R1 is a hydrogen atom or a C1-C4 alkyl group,
- R2 is a C2-C12 divalent hydrocarbon group,
- R3 and R4 independently represent a hydrogen atom or a C1-C6 alkyl group or an optionally substituted phenyl group,
- to form a monomer comprising a salt of an amine-functional group and/or a salt of a phosphine-functional group, said salt comprising as counter-ion the anionic residue of an acid having aliphatic, aromatic, or alkaryl hydrocarbon group comprising at least 5 carbon atoms;
- and
- polymerizing at least one type of said salt-comprising monomer.
9 more elements
Dependencies are inferred from the claim text.