Acrylate based anticorrosion films using novel bis‐phosphonic methacrylates

Abstract

Abstract Two novel phosphonated methacrylate monomers were successfully synthesized and subsequently incorportated into adhesion/anticorrosive coatings. Specifically, they were propyl N , N ‐tetramethyl‐bis(phosphonate)‐2‐hydroxyl‐bis(methylene) amine methylmethacrylate (MAC 3 NP 2 ) and 2‐[2,2‐bis(diisopropoxyphosphoryl)ethoxy]‐methylmethacrylate, (MAC 3 P 2 ). The phosphonic forms of each monomer were blended with ∼85% w.w acrylates (tripropyleneglycol‐diacrylate and hexanediol‐diacrylate) and 6% w.w of the photo sensitive initiator Darocur®. Along with a monophosphonic monomer synthesized in a previous publication (MAC 3 P), they were polymerized on Q‐panels under ultraviolet light, and then subject to the salt spray test (ca. 0.5 mol/L NaCl at 35 °C) for a duration of up to 50 days. The results indicate that acrylate blends with low concentration of the bisphosphonic compound MAC 3 P 2 have excellent resistance to corrosion, thus excellent adhesive properties. Importantly, these coatings were formed without the use of a hydrophobic polymer matrix or solvents. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 7972–7984, 2008