Epoxy ester coatings

Epi-Tex . [Rhone-Poulenc/Perf. Resins Coatings] Epoxy ester resin sol ns. for performance primers, force-dried or low-bake applies., industrial maintenance coatings. 

Solid epoxy resins (SER) 2.4 Powder coating epoxy esters for coatings can, drum, and maintenance coatings... 

Varnishes were widely used in the nineteenth and early twentieth centuries. They have been replaced almost completely by a wide variety of other products, especially alkyds, epoxy esters, and urethane oils. The term varnish has come to be used for transparent coatings, such as trade sales varnishes, even though few of them are varnishes in the original meaning of the word. 

Epoxy ester Epoxy esters are a type of alkyd where a high molecular weight resin is reacted with alkyd resin. The curing mechanism remains primarily through the oil-oxidation reaction and their properties are in no way similar to the chemically reacted epoxies. They have similar properties to alkyds although with improved chemical resistance but inferior appearance. They form a reasonably hard, oil-resistant coating, which can sometimes be suitable for machinery enamels, but are primarily for interior use, since they tend to chalk rapidly on exteriors. Their best use is for chemical or water resistance where circumstances dictate that finishes that are more superior cannot be used. 

Thin coatings These pigmented materials, commonly known as floor paints, are often based on chlorinated rubber (see Section 12.3.2) or epoxy ester (see Section 12.3.1). They have limited life in heavy traffic but are easy to apply. 

Figure 7. Paint adhesion loss in salt spray exposure (ASTM B117) as a function of ester content for chain-extended epoxy-amine and epoxy-ester resin based coatings. All coatings applied at 20-25 urn film thickness to SAE 1010 steel test panels, baked, scribed and exposed for 24 hours to salt spray conditions.

Figure 9. SEM study of the conversion-coated substrate surface after adhesion failure of epoxy-ester coating in cathodic polarization testing. Reproduced from Ref. 29, copyright 1983, American Chemical Society.

Epotuf [Reichhold], TM for epoxy resins, epoxy hardeners, and epoxy esters used as coating vehicles. 

Pentachlorophenol, a biocide, was fixed to a fatty alkyd resin and to an epoxy ester of soya oil fatty acids to yield a good coat-forming functionalised resin. 28 refs. Articles from this journal can be requested for translation by subscribers to the Rapra produced International Polymer Science and Technology. 

Butoxyethoxy) ethanol should be considered a useful solvent in epoxy ester based electrodeposition coatings. Although the differences between the solvents were small, there were certain advantages compared... 

Dymerex< [Hercules] Resin of dimoic acids thermq>lastic resin used in mfg. of protective coatings, sj varnishes, epoxy ester resin vehicles, adhesives, printing iiiks as a soldering flux. 

Prime coating is either a two-pack, zinc-rich epoxy primer with a DFT of ca. 30-40 pm, or a chromate-free, two-pack epoxy primer. Topcoats based on PVC copolymerisates, chlorinated rubber, silicone-reinforced epoxy esters, or alkyds were used for many years. Now, the standard European topcoat is based on acrylic resins with terminal epoxy groups that are cross-linked with amine adducts or aminoamide resins. 

Side and cross members are pretreated by blasting and phosphating. An electrode-posited primer coating follows and is sometimes immediately overcoated with a topcoat based on an air-drying alkyd or epoxy ester, or on an oven-drying alkyd-melamine resin combination. After assembly of the truck, a third layer (i.e., a second topcoat) is applied that serves as a supply finish. These finishes are mostly two-pack acrylic aliphatic isocyanate topcoats. Water-based two-pack systems and powder coatings are the most recent developments. 

Uses Defoamer for water-redudble coatings, e.g., alkyds, polyester, epoxy esters, acrylics, and Inks... 

Chem. Descrip. Neodecanoic acid glycidyl ester CAS 26761-45-5 EINECS/ELINCS 247-979-2 Uses Epoxy modifier/diluent for coatings resins (esp. alkyds, polyester, acrylics), Epon resin-based electrodeposition binders, modified epoxy esters, UV-cured systems... 

Chem. Descrip. Blend of surface-act. components/polysiloxane adduct Uses Defoamer, air release agent tor water-sol. industrial coatings (acrylics, alkyds, HC, NC, PU emulsions and latexes, water-reducible alkyds, acrylics, polyesters, epoxy esters)... 

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