Alkyd waterborne coating

Field trials have shown that the expected durability of the new waterborne coating systems is equal to that of conventional solventborne paints. As a further advantage, the number of single coats can be reduced from three to two. Standard freight cars are painted with a three-coat alkyd system consisting of an anticorrosive primer, an intermediate coat, and a topcoat, total DFT is ca. 150 pm. Such systems are being replaced by single-coat systems of waterborne acrylic resins and acrylic copolymers to reduce solvent emission. 

Chem. Descrip. Waterborne med. oil alkyd in 2-butoxy ethanol Uses Alkyd for coatings... 

Uses Drier promoter for high-solids paints and waterborne coatings, high solids solv.-based alkyd paints, water-based alkyd paints loss of dry inhibitor in water-based coatings... 

Uses Corrosion inhibitor for waterborne coatings on ferrous surfe., e.g., metal primers, flat or gloss disp. paints, polyacrylics, polyvinyl acetates, PS acrylics and terpolymers, waterborne alkyds, aq. stoving enamels temporary rust inhibitor for metal surfs. in-can corrosion inhibitor, esp. under acid conditions Features Fights flash rusting... 

S. K. Dhoke and A. S. Khanna, Effect of nano-ZnO particles on the corrosion behaviour of alkyd-based waterborne coatings , Prog Org Coat, 2009,64,371-82. 

In commercial use since 1927 [18], alkyd resins are among the most widely used anticorrosion coatings. They are one-component air-curing paints and, therefore, are fairly easy to use. Alkyds are relatively inexpensive. Alkyds can be formulated into both solvent-borne and waterborne coatings. 

Most of the important types of modem solvent-borne coatings — epoxies, alkyds, acrylics — are also available in waterborne formulations. In recent years, even urethane polymer technology has been adapted for use in waterborne coatings [1]. However, waterborne paints are not simply solvent-borne paints in which the organic solvent has been replaced with water the paint chemist must design an entirely new system from the ground up. In this chapter, we discuss how waterborne paints differ from their solvent-bome counterparts. 

For environmental reasons, waterborne coatings are being used increasingly. The binder may be either dispersed or dissolved in the water phase. Dispersion coatings show lower gloss and less good adherence than the dissolved types such as alkyds, ureum and melamine, phenol, and acrylic-type coatings. 

Water-based inks, 14 326 Water-based muds, 9 3-5 Water-based writing inks, 14 328 Water-borne adhesives, 25 475 Waterborne alkyds, 2 156-158 Waterborne automotive coatings, 10 448 Waterborne can coating system, 10 445-446... 

Chem. Descrip. Ammonium benzoate CAS 1863-63-4 EINECS/ELINCS 217-468-9 Uses Rust inhibitor for aq. industrial coatings, latex emulsion primers, waterborne lacquers, water-reducible alkyds and epoxies Features Flash rust inhibitor cost-effective Properties Off-wh. cryst. sp.gr. 1.76 dens. 10.48 Ih/gal bulking value 0.095 gal/lb m.p.198C Use Level 0.1-0.5%... 

Chem. Descrip. Proprietary polysiloxane-based defoamer in wh. spirit Uses Defoamer for nonaq. high-solids and waterborne epoxy coatings, alkyds, acrylics, PU, polyester, disp. adhesives, polymerization Regulatory DOT regulated SARA 311/312 reportable Properties Yel. clear liq. aromatic odor negligible sol. in water sp.gr. 0.80 dens. 6.7 Ib/gal vise. 15 cps flash pt. (PMCC) 55 C VOC 74.2% (EPA method 24) 100% act., 20.6% solids Use Level 0.2-1.0% on total wt. 

Chem. Descrip. Bis (1-2,2,6,6-pentamethyl4-piperidinyl) sebacate and methyl (1,2,2,6,6-pentamethyl-4-piperidir ) sebacate Uses Lt. stabilizer for exterior paints/coatings, automotive coatings, industrial coatings, wood stains, thermoplastics, acrylics, alkyds, polyes-ter/melamine, thermosetting acrylics, waterborne acrylics, phenolics, vinylics, radiation-curable acrylics, PU, PP, PE, styrenics, unsat. polyester... 

Uses Emulsifier, flow aid, anticratering agent for polymer emulsions, waterborne industrial coatings (epoxy, alkyds, polyesters), emulsion printing inks, aq. adhesives, polymerization, cleaners, wallpaper removers Features Silicone-free... 

Uses Dispersant, pigment slurry vise, reducer for waterborne industrial coatings (PVAc, acrylics, SIB, PVC/PVdC, alkyds, polyesters, PU) and printing inks... 

Chem. Descrip. Dioctyl sulfosodium succinate CAS 577-11-7 EINECS/ELINCS 209-406-4 Uses Potent surf. tens, reducer, wetting agent for waterborne architectural and industrial coatings, latex, adhesives, printing inks, PVAc, acrylics, S/B, alkyds, polyester, PU food pkg. adhesives Features Stable in dil. acid media Regulatory FDA 21CFR 175.105... 

Chem. Descrip. Based on calcium ion exchanged amorphous silica gel CAS 63231-67-4 EINECS/ELINCS 231-545-4 Uses Corrosion inhibitor, pigment for solv.-bome alkyd primers, coil coating primers, waterborne primers, solv.-bome two-part primers, wash primers... 

Core-shell particles have been produced both chemically [134] and electrochemically [135]. For example, a dispersion of electrically conductive core-shell particles was obtained by polymerizing pyrrole or aniline in the presence of a dispersion of polyurethane or alkyd resin particles [134]. Coatings from these dispersions were reported to have conductivities in the range of 10 to 10 S/cm [134]. This coreshell approach, though yet to be fully exploited in the area of corrosion protection, enables formation of CP-containing films from waterborne dispersions. 

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