High Temperature Lubricants from Aromatic Acids and Fluorinated Alcohols.

Murphy, C. M.; O’Rear, J. G.; Ravner, H.; Sniegoski, Paul J.; Timmons, C. O.

doi:10.1021/je60004a017

Cited by 13 publications

(8 citation statements)

References 6 publications

(9 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…APPLICATION OF STRUCTURAL GUIDES TO PREPARATION OF NEW CAPACITOR IMPREGNANTS With the foregoing principles in mind, a number of new, partially fluorinated esters have been synthesized by Murphy and others (20). The structures, names, and abbreviations of these compounds, several of which have not been reported, appear in Table IX.…”

Section: Structural Guides For Synthesis Of High Dielectric Constant ...mentioning

confidence: 99%

“…By referring to Table X, it is seen that of the new compounds synthesized, four stand out in terms of high dielectric constant-bis(^'-propyl) 3-methylglutarate, tris-(V''-propyl) tricarballylate, tris( '-amyl) 1,2,3-benzenetricarboxylate, and bis( '-propyl) 2,2'-diphenate. The bis- ( '-amyl) 2,2'-diphenate, which was synthesized for lubricant use, is also of interest, because it is a stable liquid at higher temperatures than aliphatic fluoroesters (20). The introduction of smaller alcohol groups lowers the boiling points of the esters; this may place a restriction on the use of bis(i/',-propyl)3-methylglutarate.…”

Section: Structural Guides For Synthesis Of High Dielectric Constant ...mentioning

confidence: 99%

“…Data available indicate that the oxidation stabilities of both the bis(i/-'-propyl)tricarb ally late and bis(i/-,-propyl)2,2'-diphenate are better than that of the bis(i/',-heptyl)3-methylglutarate studied previously. The stability of the bis(i/',-amyl)2,2,-diphenate to oxidation, thermal decomposition, and hydrolysis is excellent (20).…”

Section: Structural Guides For Synthesis Of High Dielectric Constant ...mentioning

confidence: 99%

See 2 more Smart Citations

Structural Guides to the Development of High Dielectric Constant Esters for Capacitors.

Romans¹,

Singleterry²

1961

J. Chem. Eng. Data

View full text Add to dashboard Cite

to the original organic phase and dried over magnesium sulfate.Next, 2-chlorocyclohexane (484 grams, 3.65 moles) was dissolved in ether and added dropwise to a stirred suspension of sodium methoxide (213 grams, 3.94 moles) in dry ether (1200 ml.). After complete addition, the mixture was stirred with refluxing for 2 hours and then cooled. Water was added to dissolve the salts and the two layers were separated. The aqueous layer was extracted twice with 100-ml. portions of ether, the combined extracts being washed with 5% hydrochloric acid, 5% bicarbonate, and saturated sodium chloride solution and then dried over magnesium sulfate. Distillation afforded 284 to 302 grams (61 to 65%) of ester, 75-77°/48 mm. (5).3-Hexyl-1,6-hexanediol and 3-"Oetyl"-1,6-hexanediol (4).3-Hexyl-1,6-hexanediol. /3-Hexyladipic acid (4) was reduced with lithium aluminohydride in ether according to standard procedure to give an 80% yield of glycol (b.p., 137-40°/0.4 mm.). Phosphorus tribromide in the usual manner afforded the 1,6-dibromide in 61% yield (b.p., 114-770.1 mm.).

show abstract

Section: Structural Guides For Synthesis Of High Dielectric Constant ...mentioning

confidence: 99%

Section: Structural Guides For Synthesis Of High Dielectric Constant ...mentioning

confidence: 99%

Section: Structural Guides For Synthesis Of High Dielectric Constant ...mentioning

confidence: 99%

See 1 more Smart Citation

Structural Guides to the Development of High Dielectric Constant Esters for Capacitors.

Romans¹,

Singleterry²

1961

J. Chem. Eng. Data

View full text Add to dashboard Cite

show abstract

“…Certainly, future lubricating oils with oxidative stability and corrosion resistance for operation considerably above 500 F (possibly as high as t000 F) will be needed (2). Various classes of compounds, such as esters, ethers, fluorocarbons, silicones, and others, have been evaluated as possible lubricants and additives (3)(4)(5)(6)(7)(8).…”

Section: Introductionmentioning

confidence: 99%

Some esters of mono‐, di‐, and tricarboxystearic acid as lubricants: Preparation and evaluation

Dufek

Parker

Koos

1974

J Americ Oil Chem Soc

View full text Add to dashboard Cite

Conditions were determined for selective alkaline transesterification of methyl 9(10)-carbomethoxystearate. With 2,2-dimethylpentanol and 2-ethylhexanol, the corresponding alkyl 9(10)-carbomethoxystearates were obtained in good yield. These two mixed alkyl diesters, along with other alkyl esters of mono-9(10)-, di-and tricarboxystearic acids prepared by conventional methods, were evaluated as lubricants. Several esters compared favorably with dioctyl sebacate used as the control. The esters had high viscosity indices and tow American Society for Testing and Materials slopes. The pour point of purified dimethylpentyt 9(10)-carbomethoxystearate is below -70 C. Several esters have antiwear properties when added to the control oil.

show abstract

“…A more recent specification, MIL-L-23699 (79), describes an oil with slightly higher viscosity, better load-carrying ability, and better thermal stability than MIL-L-7808 type oils. After various fluid types, such as esters, silicones, phosphates, and mineral oil fractions, were investigated, it appeared that esters were the most suitable base stocks (20,23). In view of the deficiencies of phenothiazine under the expected severe engine conditions, improved antioxidants were considered to be the key to hightemperature jet lubricant development; the need for improved antioxidants is illustrated by widespread research in this field (7, 9-72, 27, 22).…”

mentioning

confidence: 99%