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Polyalkylene glycol

Polyalkylene glycols, particularly polypropylene glycols, represent 17% of French market in 1992. [Pg.279]

The most common liquid lubricants are mineral oils (usually naphthenic), esters (either diesters or complex esters), polyalpha olefins and polyalkylene glycols. [Pg.280]

Ucon HTF-500. Union Carbide Corp. manufactures Ucon HTE-500, a polyalkylene glycol suitable for Hquid-phase heat transfer. The fluid exhibits good thermal stabHity in the recommended temperature range and is inhibited against oxidation. The products of decomposition are soluble and viscosity increases as decomposition proceeds. The vapor pressure of the fluid is negligible and it is not feasible to recover the used fluid by distiHation. Also, because the degradation products are soluble in the fluid, it is not possible to remove them by filtration any spent fluid usuaHy must be burned as fuel or discarded. The fluid is soluble in water. [Pg.504]

The polyalkylene glycol polymer employs a starter that consists of a relatively reactive alcohol and a smaller amount of its potassium or sodium salt. With propylene oxide, for instance, initiation of the polymeri2ation then involves the starter in the following steps ... [Pg.245]

Poly(alkylene glycol)s are also used as lubricity additives ia water-based synthetic cutting and grinding fluids (36), and ia aqueous metalworking fluids. Under the high frictional heating at the tool or die contact with the workpiece, the polyalkylene glycol comes out of solution ia fine droplets which coat the hot metal surfaces. [Pg.246]

The most common BW antifoam employed today is UCON 50-HB-5100, from Union Carbide Corporation, which is the linear POP(33), POE(45) ether of butyl alcohol, or polyalkylene glycol monobutylether (PAGMBE). [Pg.553]

Both polyalkylene glycols [45] and side chain polymeric alcohols such as polyvinyl alcohol have been suggested. These substances are comparatively environmentally safe [1420,1553]. [Pg.14]

The most important additives are polyethyleneoxide, polypropyleneoxide, and polybutyleneoxide. They are also referred to as polyalkylene glycols, but this name is correct strictly for derivatives of 1,2-diols. [Pg.329]

Because of the high molecular weight of the modified polyalkylene glycol, the oil dehydration already occurs when used alone. The compound acts synergistically with other conventional demulsifiers. [Pg.333]

Reacting a high-molecular-weight polyalkylene glycol (PAG) with ethylene oxide (EO) to form a PAG/EO adduct... [Pg.333]

A. I. Penkov, L. P. Vakhrushev, and E. V. Belenko. Characteristics of the behavior and use of polyalkylene glycols for chemical treatment of drilling muds. Stroit Neft Gaz Skvazhin Sushe More, (l-2) 21-24, January-February 1999. [Pg.446]

Mehra (1) [Named after the inventor] A process for extracting particular hydrocarbons from natural or synthetic gas streams using solvent extraction into polyalkylene glycol dialkyl ethers. Invented in 1982 by Y. R. Mehra at the El Paso Hydrocarbons Company, Odessa, TX. U.S. Patent 4,421,535. [Pg.173]

Polyalkylated fullerenes, 12 247 Polyalkylations, 12 162 Polyalkylbenzenes, 23 328 Polyalkylene glycol (PAG) base stocks, 15 218... [Pg.723]

Immobilized Polvalkvlene Glvcols. Polyalkylene glycols and mono-methyl ethers of various molecular weights were heated at toluene reflux with both silica gel and alumina. Carbon analyses of the... [Pg.144]

Table I. Polyalkylene Glycols Immobilized onto Metal Oxide Surfaces... Table I. Polyalkylene Glycols Immobilized onto Metal Oxide Surfaces...
Polyalkylene glycols immobilized onto metal oxides appear most... [Pg.145]

Other Synthetic Fluids. Other synthetic fluids are used as heat-transfer fluids although most of them are not sold specifically for this purpose. Fluids that sometimes are used include diethylene glycol, triethylene glycol, propylene glycol, butyl carbitol, w -cymene, several silanes, several silicone fluids, some silicate fluids, other polyalkylene glycols, other oiganic ethers, and other molten salts. Fluidized solids also are used as heat-transfer media. [Pg.505]

Fic. 6.42. Absorbance spectra of wet and dry polyalkylene glycol ether (brake fluid) in the near infra-red region of the electromagnetic spectrum 5 ... [Pg.498]

Alkoxylation with, for example, propylene oxide (PO). Preferred amine is triethanolamine, or ammonia and other alkanolamines used amine can also be quaternized Best example is triethanol with 14.9 PO units Contains vinyl ester acetal functionalities besides some unreacted vinyl alcohol monomer units. Preferred aldehyde is butyraldehyde Backbone, for example, polyalkylene glycol, polyalkyl-eneimine, polyether, or polyurethane, and active functional side groups made from grafting VP or VCap to backbone using radical initiators TBA (tributylammonium groups)... [Pg.666]

In a fully synthetic oil, there is almost certainly some mineral oil present. The chemical components used to manufacture the additive package and the viscosity index improver (VI) contain mineral oil. When all these aspects are considered, it is possible for a "fully synthetic" engine oil to surpass mineral oil (Shubkin, 1993). Synthetic oils fall into general ASTM classification (a) synthetic hydrocarbons (poly-a-olefins, alkylated aromatics, cycloaliphatics) (b) organic esters (dibasic acid esters, polyol esters, polyesters) (c) other fluids (polyalkylene glycols, phosphate esters, silicates, silicones, polyphenyl esters, fluorocarbons). [Pg.49]


See other pages where Polyalkylene glycol is mentioned: [Pg.1099]    [Pg.1099]    [Pg.1100]    [Pg.776]    [Pg.503]    [Pg.505]    [Pg.265]    [Pg.341]    [Pg.548]    [Pg.552]    [Pg.552]    [Pg.785]    [Pg.564]    [Pg.643]    [Pg.59]    [Pg.331]    [Pg.333]    [Pg.22]    [Pg.1368]    [Pg.1368]    [Pg.1369]    [Pg.51]    [Pg.286]    [Pg.44]    [Pg.205]    [Pg.503]    [Pg.776]    [Pg.214]   
See also in sourсe #XX -- [ Pg.63 , Pg.64 , Pg.65 , Pg.66 , Pg.67 , Pg.68 ]

See also in sourсe #XX -- [ Pg.129 ]




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