Polyoxyalkylene glycols

The inorganic nitrite used as a corrosion inhibitor in aqueous alkylene glycol or polyoxyalkylene glycol solutions can be replaced with polyoxyalkylene amines [1263,1264]. Such polyoxyalkylene amines impart corrosion inhibition to the liquid in contact with the metal and the metal in contact with the vapors of the aqueous composition. Aqueous compositions containing the glycol and the polyoxyalkylene amine also exhibit a low foaming tendency. 

Crosslinking can be achieved also, if the polyamine is modified with a vinyl monomer [283-285], Such mixtures are substantially free of copolymers derived from a polyoxyalkylene glycol and a diglycidyl ether. 

Laboratory measurements of the damping coefficient and wavelengths of cm-mm-scale surface waves due to ordinary surfactants (oleic acid and oleyl alcohol) and polymer (polyoxyalkylene glycol - Emkarox ) organic films in a wide concentration range and at different wave frequencies are carried out using a method of paramertically excited waves. 

Polyoxyalkylene glycols have also been prepared from propylene epoxide and 1,2-epoxybutane. Structurally the polyoxyalkylene glycols are both ethers and glycols. 

Since the polyoxyalkylene glycols are dihydroxylic alcohols as well as polyethers, they can be reacted with acids to give ester-type lubricant fluids t-9-, carboxylates, phosphates, silicates, etc. 

Figure 17-2. Viscosity-temperature behavior of various types of synthetic lubricants. 1 White oil, VI 101. 2 4 -Undecy1-m-terphenyl. 3 Fluoroalkane. 4 -Di (chlorophenyl )pentane. 5 Polyphenyl ether. 6 Polyoxyalkylene glycol. 7 Di(2-ethylhexyl) sebacate. 8 Dimethyl silicone.

Figure 17-2 shows the influence of temperature on the viscosity of representative examples of synthetic fluids of various chemical types. Direct comparisons can be made when individual fluids have the same viscosity at a given temperature e.g. white oil and polyoxyalkylene glycol at 301 K (83 F). The viscosity of the glycol fluid at 372 K (210 F) is 6 Saybolt seconds higher than that of white oil, which is a significant difference that immediately shows the better viscosity behavior of the synthetic fluid. In similar fashion, u,u -di(chlorophenyl)pentane, di(2-ethylhexyl) sebacate and a dimethyl silicone all have a viscosity of 120 Saybolt seconds at 340 K (153 F) but at 372 K there is a spread of 15.7 Saybolt seconds in the viscosity behavior of these fluids. 

Icinol. [ICI Australia] Polyoxyalkylene glycol ether lubricant d oamer. 

Dimer/trimer acids neutralized with an appropriate amine, such as diethylenetri-amine, have traditionally been employed as components of oil-soluble corrosion inhibitors for reducing corrosion in oil well piping and related recovery equipment in the oil industry. Compositions thereof with monofunctional alcohols and/or polyoxyalkylene glycols are used as grease constituents and industrial lubricants, both in the neat form and, when emulsified, with water. The esters form stable emulsions with water which are useful for working both ferrous and nonferrous metals and in addition impart rust inhibiting properties. 

Colorin 102 [Sanyo Chem. Ind.j Chem. Descrip. Polyoxyalkylene glycol Uses Defoamerfor Industrial applies. 

Chem. Descrip. Polyoxyalkylene glycol ether Uses Wetting agent and penetrant for textile processing Features Low foam... 

Chem. Descrip. Polyoxyalkylene glycol block type... 

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