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Abstract
Co-polymers of methyl methacrylates (MMAs) are widely used in coatings because of their film-forming capacity, which is due to better bond-forming tendency with various substrates. The adhesion of coating with various substrates such as wood, metal or plastics is an important property for protective, as well as decorative coatings. Co-polymers of MMA with different monomers such as butyl acrylate (BuA), 2-ethyl hexyl acrylate (2-EHA) and hydroxyl ethyl methacrylate (HEMA) are extensively used for coatings on different substrates to improve the roughness, acid scratch and solvent resistances. Co-polymerization of diacrylates/dimethacrylates of glycols with various alkyl esters have been investigated by several scientists. In the synthesis of these materials an understanding of polymerization mechanism and kinetics is important for better control of gel structure. The rate constant depends largely on the physical properties of the system, which in turn, are strong functions of monomer conversion. Cross-link density is one of them, and T g also depends on it, increasing with increasing cross-link density.
