Rust inhibiters

The use of water borne coatings on steel can, in certain instances, lead to flash rusting, which is the rapid and irreversible formation of rust. This is especially true under conditions of high humidity, where the water component of the formulation remains in contact with the metal for extended periods of time, when the evaporation is slow. 

The use of slower evaporating amines, such as triethylamine or di-methyl amino ethanol, will maintain the desired pH over a greater period of time, but will significantly delay the onset of water resistance offered by the film. 

Alternatively, flash rusting may be prevented by the use of ammonium benzoate, sodium nitrite or ammonium dichromate. In instances where the coating is to be applied to copper or brass, the ammonium ions in ammonium benzoate and ammonium dichromate will react with the metals, leading to dullness or discoloration. This effect can be neutralised with a small addition of benzotriazole. 

---

Recommended brands and grades of lithium-based rust-inhibiting bearing grease conforming to IS 7623 are given below ... 

Improvements in process and quality control made significant contributions to the transition from iron to steel as the major ferrous construction material over a century and a half ago. For most of that time red lead was relied upon, and not without a remarkable degree of success, as the rust-inhibitive pigment in anti-corrosive paints. In the last twenty years, however, there has been a similar dramatic change from such simple paints as red lead to synthetic polymer coatings which have as complex a technology as steel manufacture itself. 

These grades have been developed to give improved chemical resistance to automotive fluids such as gear lubricants, transmission and power steering fluids, engine oils, and rust inhibited engine coolants. Resistance to aromatic hydrocarbons is reduced. 

Thermal stability refers to the ability of the oil components, both base oil and additive, to resist degradation or "cracking" due to the effects of heat. The products of thermal decomposition may be corrosive and form a deposit. Corrosion of engine parts (of non-ferrous metals) occurs during the winter months for the most part under low temperature driving conditions. Water vapor may condense in the crankcase, and rusting (of ferrous metals) may occur if the motor oil does not have adequate rust inhibiting properties (Anon, 1958). 

Marsh, Henry M. (to Hercules Powder Co.) Rust Inhibiting... 

The surfactants so made have many interesting properties in addition to detergency. They are low-foaming, can tolerate alkalie, have emulsification and antistatic properties. They have rust Inhibition and are often used as lubricants. 

Screw the suppressor tube onto the barrel-receiver after lubricating the barrel and tube with a rust inhibiting grease. Align the Index narks on the bottom of the housing and receiver near the setscrew hole. Replace the setscrew. 

JAP(K)64483), and rust-inhibiting paint compositions (85JAP(K)28465). 

Properties Light-yellow pigment. D 3.84. Rust-inhibiting and corrosion-resistant properties. Has good heat and light resistance and low reactivity in highly acid vehicles. 

Use Stabilizing and rust-inhibiting agent for silicones, lubricant and fuel additive, polymerization catalyst, hydrogen chloride scavenger. 

Organic compositions claimed to be useful as insecticidal, rust-inhibiting, lubricant und fuel-oil additives were obtained on heating monoolefinic polymers, white phosphorus and S2CI2 or SCI2 to 195-200 for 4 h The reaction may also be initiated by Co -7-radiation at 15-90 °C... 

Figure 11-7. Influence of acidic constituents on the additive activity of tricresyl phosphate. Four-ball wear test 1 hour at 620 rpm. Reference lubricant 0.065% tricresyl phosphate in rust-inhibited mineral oil. <0.02 Mole-% acidic constituent in tricresyl phosphate . 0.1% Mole-% acidic constituent in tricresyl phosphate o. 0.3 Mole-% acidic constituent in tricresyl phosphate A. From data by Bieber, Klaus and Tewksbury [41].

Actrabase. [Climax Performance] Soap sulfonate and petroleum sulfonate emulsifier, rust inhibits f[Pg.6]

BSWL. pagle-Pidier] Basic silteate white lead pigment, heat stabilizer for idastics rust-inhibitive pigment in the automobile industry us in industrial or maintenance paints. 

InipoL [CecaSA] Diamines rust inhibits, paint and lubricant additive. 

KP 2, >4. [Fttro/Keil] Lubricity agents for plasticizing dry rust inhibits films. 

Lubrhophos. [Rhone-Poulenc Surf. Rhone-Poulenc France] Phosphate esters lubricant, rust inhibit , emulsifier, pressure additive for lubricating and roUii% (, hydraulic, cutting and grinding fluids. 

Mackamide. [McIntyre] Fatty acid alka-nohunides foam stabilizer, thickener, conditioner, strftener, emidsifier, hu-mectant degreaser, rust inhibits. 

Atpet. PCI Am. ICI Surf. Belgium] Sorbitan esters surfactants, rust inhibits, petroleum additives. 

SoiMuL [SocietaItaLEmulstounti] Sodium petroleum sulfonate/riist itihibi-tor/solvent blrads emulsifier, rust inhibits to metalworidng iiKhistties. 

Fig. 2.58. Rust-inhibiting of pipelines using a laminated film incorporating Cl in its adhesive layer (1) barrier PE layer (2) separating PE layer (3) inhibited cellular layer (4) adhesive layer (5) cells containing Cl...

It should be underlined in conclusion that inhibited polymer films are an efficient rust-inhibiting means of protecting hardware and metal structures against atmospheric, hydrosulfuric, acidic, microbiological and other types of corrosion. The numerous film types and their production processes fit any customer s preference in line with the chosen preservation method, transportation or storage conditions and anticorrosion terms. 

---