Zinc-rich coatings

Avoiding the use of zinc, cadmium, or zinc rich coatings on austenitic stainless steels. Even stainless systems operating at low temperatures can accidentally be heated by fire or welding repairs and can cause stress cracking. 

When X in formula 1-22 is about 100, the polymers are known as phenoxy resins. Although further molecular weight increase can be accomplished by reaction on the pendant hydroxyls in the molecule, commercial phenoxy polymers already have sufficient strength to be formed directly into articles. They would be in the finite-strength region of curve B in Fig. 1-1. (The major current use for these polymers is in zinc-rich coatings for steel automobile body panels.)... 

Use Anticorrosive pigment for solvent-based epoxies and as auxiliary pigment for 1-package zinc-rich coatings. Also used in water-based coatings. 

Zinc-Lock. [Porter Int l.] Zinc-rich coatings. 

The service life of the coating systems is significantly affected by service conditions. For example, a two-coat alkyd primer with the topcoat exposed to a rural or residential area would last only 3 years. The triple system of moist-cured urethane zinc-rich coat, a high-build acrylic urethane coat, and an acrylic urethane top coat will last 15 years. 

Uses Pigment, corrosion inhibitor, tannin stain blocker, flame retardant, UV stabilizer for use In water- and solv.-based coatings stabilizer for metals and metal salts, esp. zinc, for formulation in zinc-rich coatings food-contact paper/paperboard Features Multifunction ... 

Chem. Descrip. Barium metaborate-based Uses Pigment, corrosion inhibitor, tiame retardant, LIV stabiiizer tor water- and soiv.-based coatings stabiiizer tor certain metais and metai saits, esp. zinc in zinc-rich coatings... 

Chem. Descrip. Zinc clad hollow microspheres Uses Filler to build high-mil coatings at less weight, and in zinc-rich coatings for structural steel, marine, automobile underbodies, tank linings, mstdl coils etc... 

Bentone 27V Bentone SD-2 M-P-A 60T M-P-A 60X M-P-A 1075 M-P-A 2000T M-P-A 2000X antisettling agent, zinc-rich coatings Halox BW-111... 

Araldte GY 281 Araldte GY 9580 epoxy, zinc-rich coatings... 

Hercules, Inc. (1966). Zinc-rich coatings containing conductive carbon black. U.S. Patent 3,446,710. 

Sacrificial means The use of a sacrificial anode such as zinc to protect steel is a longstanding and well-known industrial practice. The zinc layer on galvanized steel degrades when exposed to an adverse environment, and this protects the underneath surface. Using a similar approach, both inorganic and organic resin-based, zinc-rich coatings have been developed to protect a variety of metal substrates [19,20]. 

Zinc-rich coatings can be classified as organic or inorganic. The organic zinc-riches have organic binders, with polyamide epoxies and chlorinated rubber binders being the most common. Other types such as urethane zinc-rich are also available. These latter coatings are more easily applied than the other zinc-rich... 

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