Results 151 to 160 of about 243,772 (175)

Lubrication Properties of Trimethylolpropane Esters Based on Palm Oil and Palm Kernel Oils

European Journal of Lipid Science and Technology, 2004
AbstractDue to the global drive towards biodegradable products, trimethylolpropane [2‐ethyl‐2‐(hydroxymethyl)‐1, 3‐propanediol] (TMP) esters based on palm and palm kernel oils were synthesized, their lubrication properties evaluated, and their potential as base stock for biodegradable lubricants assessed.
Robiah Yunus
exaly   +2 more sources

Optimization of Polyol Ester Production by Transesterification of Jatropha-Based Methyl Ester With Trimethylolpropane Using Taguchi Design of Experiment

Fuel, 2011
Polyol ester production from transesterification of Jatropha oil methyl ester (JOME) and trimethylolpropane (TMP) was investigated. The effects of temperature, pressure, ratio of JOME:TMP and catalyst amount were studied in optimization experiment, using Taguchi L9 experimental layout.
Umer Rashid, Suzana Yusup, Ruzaimah Nik Mohamad Kamil   +2 more
exaly   +2 more sources

Adsorption Behavior of Trimethylolpropane-Dehydroabietic Acid Ester at the Air–Water Interface

Journal of Surfactants and Detergents, 2016
AbstractA novel amphipathic trimethylolpropane‐dehydroabietic acid ester was successfully prepared with acyl chloride method. Various analytical techniques such as liquid chromatography–mass spectrometry, Fourier transform infrared spectrometry, proton and carbon nuclear magnetic resonance spectroscopy were employed to evaluate the chemical structure ...
Yan Zhou, Fuhou Lei, Juying Zhou
exaly   +2 more sources

Esters of 1,1,1-trimethylolpropane as a base and component of lubricating oils

Azerbaijan Oil Industry
Symmetrical, unsymmetrical esters of 1,1,1-trimetilolpropan (TMP) with C6-C8 aliphatic monocarboxylic acids have been synthesized. Their physicochemical, viscosity-temperature, thermal-oxidative (TOS) properties have been studied. It was found that esters have relatively low viscosities at 100 oC (3.55–4.39 mm2/s), high flash points (198–220 oC) and ...
G.N. Gurbanov, M.M. Abdullaeva, L.M. Yusifova, S.F. Ahmedbekova   +3 more
openaire   +1 more source

Immobilized lipase-catalyzed transesterification for synthesis of biolubricant from palm oil methyl ester and trimethylolpropane

Bioprocess and Biosystems Engineering, 2021
The present study reports the effects of three commercial immobilized lipases namely Novozyme 435 from Candida antarctica lipase B (CALB), Lipozyme TL IM from Thermomyces lanuginosus and Lipozyme RM IM from Rhizomucor miehei on the production of trimethylolpropane (TMP) ester from high oleic palm methyl ester (HO-PME) and TMP.
Nur Sulihatimarsyila Abd, Wafti, Robiah, Yunus, Harrison Lik Nang, Lau, Thomas Choong Shean, Yaw, Suraini Abdul, Aziz   +4 more
openaire   +2 more sources

Synthesis of Palm Oil Based Trimethylolpropane Esters with Improved Pour Points

Industrial & Engineering Chemistry Research, 2005
Palm oil based trimethylolpropane (TMP) esters are potential biodegradable base stocks for environmentally friendly lubricants. To improve the low-temperature properties of palm oil based TMP esters, which are well below the requirements set by the lubricants' manufacturers, the high oleic content palm oil based TMP ester with a pour point between −10 ...
Robiah Yunus, Ahmadun Fakhru'l-Razi, Tian Lye Ooi, Rozita Omar, Azni Idris   +4 more
openaire   +1 more source

Production of trimethylolpropane esters of rapeseed oil fatty acids by immobilized lipase

Biotechnology Techniques, 1997
The polyol, trimethylolpropane (2-ethyl-2-hydroxymethyl-1,3-propanediol), and a mixture of rapeseed oil fatty acid methyl esters were transesterified by immobilized lipases without additional organic solvent. The conversion to the polyol tri-ester with immobilized Rhizomucor mieheilipase Lipozyme IM 20 was about 75% after 24 h at 58°C, 5.3 kPa, with no
Y.-Y. Linko, T. Tervakangas, M. Lämsä, P. Linko   +3 more
openaire   +1 more source

Thermal degradation of trimethylolpropane/adipic acid hyperbranched poly(ester)s

Journal of Thermal Analysis and Calorimetry, 2014
Hyperbranched poly(ester)s offer attractive features for applications in a number of areas, particularly as platforms for the support of controlled release actives in the agricultural and biomedical fields. Such materials have been generated from trimethylolpropane and adipic acid, and fully characterized using chromatographic, spectroscopic, and ...
Tracy Zhang, Bob A. Howell, Patrick B. Smith   +2 more
openaire   +1 more source

Characterization of ageing behaviour of environmentally acceptable lubricants based on trimethylolpropane esters

Journal of Synthetic Lubrication, 2006
Large amounts of lubricants having strong environmental effects are released into the environment. This has led to the development of so-called ‘environmentally acceptable’ lubricants based on synthetic and/or native esters. The aquatic toxicity of these lubricants is low and they are readily biodegradable.
Stefan Hahn, Wolfgang Dott, Adolf Eisentraeger   +2 more
openaire   +1 more source

Synthesis of trimethylolpropane esters with immobilized lipase from Candida sp. 99–125

Journal of Molecular Catalysis B: Enzymatic, 2012
Abstract The lubricants of the future have to be more environmentally adapted, have a higher level of performance. Synthesis esters (SEs) which can be used as raw materials for biodegradable lubricant base oils are increasing in popularity due to superior technical properties.
Yifeng Tao, Biqiang Chen, Luo Liu, Tianwei Tan   +3 more
openaire   +1 more source