Molecular weight distribution of poly(ethylene adipate) and its changes caused by agingPrecipitation fractionations of poly(ethylene adipate) were carried out by nonsolvent addition methods using chloroform as solvent and petroleum ether as nonsolvent. Seventy-five grams of the polyester was fractionated ...
Thus, finding green surfactants is of interest to petroleum engineers to implement cleaner EOR processes. In the current study, a novel surfactant, namely (S)-2-Dodecanamido-Aminobutanedioic acid was synthesized from L-Aspartic acid (an amino acid). After confirming its successful synthesis by FT...
Then, petroleum ether (60–80 °C) was added, and the solution cooled to 0 °C. The solid was filtered and the solution was purified by distillation to give the pure product as a light orange oil; 32.35 g; yield, 89.4%. The product was kept under argon in the fridge [54]. 2.3....
The bound oil of β-glucans was extracted with petroleum ether for four times. Afterwards, the combined extracts were dried at 40 °C under a vacuum. The fat-binding capacity of Qingke β-glucans was expressed as gram of binding fat per gram of Qingke β-glucans (g/g). Cellulose was ...
1. A process for preparing oil-solube high molecular weight carboxylic acid acylating agents comprising intimately contacting chlorine with a reaction mixture at a temperature of at least 140° C. and up to the decomposition temperature, said reaction mixture being selected from the group consisting...
preferred aliphatic hydrocarbons being the fractions accumulating during distillation of the naturally occurring mixtures, such as petroleum ether, light petrol or petrol, whilst examples of aromatic hydrocarbons are benzene, toluene and xylenes; aliphatic and aromatic chlorinated hydrocarbons, such as dichlor...
The cross-linked multicore molecular structure of PAHs identified in this work resembles the structure of petroleum asphaltene51, coal52, and soot formed in fuel combustion process1. These common features enable the unifying description of chemical structure motif of a large category of extended PAHs...
20 - 100 weight %, the poly ether segment has the Kazuhei equal molecular weight of 3,000 a) i) poly- ether segment at least the Kazuhei equal molecular weight of 3,000 and has the degree of unsaturation under 0.04 millimeter equivalent /g, the hydroxyl basis 2 and the poly- ether ...
Fig. 3: Liquid and surface applicability of LCICD effect. aDegree of LCICD (quantified byρout/ρinandJout/Jin) under the induction of water, dimethyl sulfoxide (DMSO),N,N-dimethyl formamide (DMF), EtOH, and petroleum ether (PE) with varying contact durations. The error bars are stand...
In this work, a seawater-based zwitterionic/anionic surfactant compound was prepared using cocoamidopropyl betaine (CAB) and alkyl polyoxyethylene ether sodium sulfate (AES), emphasizing their synergistic effects in enhancing conventional heavy oil recovery. First, the emulsification capability and the ...