Corrosion inhibitors zinc-based

For a couple of years 0.25% Hg became the technical standard. It has to be pointed out that the mercury content of the metallic zinc has to be divided by a factor of roughly 10 to give the mercury content based on the total cell weight of an AA (LR-6) cell. These values are sometimes indicated on the cell labels. With decreasing amalgamation, other corrosion inhibitors had to take over the role of mercury. There are numerous papers and patents claiming corrosion-inhibiting activities of elements like A1, In, T1, Cd, Ga, Na, ... 

Where zinc-based corrosion-inhibitor programs are used, the precipitation of zinc hydroxide will be impeded when high chlorides are present, and thus the inhibitor program will be rendered at least partially ineffective. 

Chemical 1. Zinc-phosphate-based corrosion inhibitor Chemical 2. Acrylic acid copolymer, stabilizer dispersant Chemical 3. 1.5% Isothiazoline-based biocide... 

Synthetic motor oils are made of a synthesized hydrocarbon base oil of hydrogenated polydecene, decanoic acid esters, zinc alkyl dithiophosphate, and synthetic poly alpha olefins. Most synthetic oils also contain additives, detergents, and corrosion inhibitors as well as viscosity modifiers. It is believed that the first synthesized polymeric hydrocarbons were synthesized in 1877, yet it was not until 1929 that the commercial development of synthetic lubricants was undertaken. Because of the availability of commercial petroleum-based lubricants, these synthetic lubricants were ultimately unsuccessful. The advent of commercial jet travel spurred the development of the first commercially successful synthetic lubricant, Mobil 1, in 1975. This lubricant had superior resistance to thermal breakdown and lower friction properties than petroleum-based products. 

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 orthophosphate complex CAS 7779-90-0 EINECS/ELINCS 231-143-9 Uses Corrosion Inhibitor, pigment, universal tannin stain for multisubstrate water-based systems, direct-to-metal finishes, high-gloss systems, and thin-film applies. 

Chem. Descrip. Basic zinc molybdenum phosphate hydrate Chem. Analysis 55% Zn, 38.5% PO4,1.7% M0O3 Uses Corrosion inhibitor, pigment for water-based primers (e.g., styrene-acrylic dispersions)... 

Chem. Descrip. Basic calcium zinc molybdate-based Uses Corrosion inhibitor for protective coatings Eeatures Economical stable synergistic with zinc phosphate Properties Wh. fine powd. < 0.1% 325 mesh residue 3.2 p mean particle size nodular shape sp.gr. 3.0 oil absorp. 17 g/100 g < 0.5% moisture... 

Chem. Descrip. Calcium zinc phosphomolybdate Uses Corrosion inhibitor pigment for water-based and solv.-based coating systems fungistat... 

Chem. Descrip. Zinc sulfonate in mineral spirits Uses Corrosion inhibitor in aq. and non-aq. coatings, esp. solvent-based primers... 

Chem. Descrip. Org. zinc complex in solv. mixt. with small nitrite addition Uses Rust/corrosion inhibitor for water-based paints/coatings, water-based industrial primers, water-reducible alkyds temporary mst inhibitor for metal surfs, when emulsified in water 2%... 

Halox Zinc Phosphate corrosion inhibitor, acid side resin-based coatings... 

Phosphate-based corrosion inhibitors are sometimes mixed with zinc silicates [51]. 

Some battery-producing companies prefer purchasing pure, nonamalgamated zinc powder to apply their own proprietary corrosion protection system based on organic inhibitors [138-141]. The general trend is to keep the anodes of all the consumer cells mercury-free (usually indicated by a green label) and to make them disposable with the regular household trash. The exceptions to this rule are those cells where this makes no sense, for example, cells with mercuric oxide cathode (now nearly 100% withdrawn from consumer markets). 

Montemor et al., 2006b), zinc (Aramaki, 2002 Garcia-Heras etal, 2004) and stainless steel snbstrates (Pepe et al, 2006). Since cerium-based compounds provide good corrosion protection and are much less toxic than chromates, they have been one of the main candidates as environmentally friendly corrosion inhibitors. 

The only RR-based antioxidants are reaction products of sulfur or phosphorus pentasulfide with - terpenes (ot-pinene), resin oils and unsaturated esters. Reaction of alcohols (Cg) with phoshorus pentasulfide, followed by a reaction with zinc oxide yields salts of dialkyl dithiophosphoric acid (ZDDP), which are widely used, not only as antioxidants but also as corrosion inhibitors and extreme-pressure additives. Longer-chain alcohols enhance oil solubility. 

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