Topic
Methyl isobutyl ketone
About: Methyl isobutyl ketone is a research topic. Over the lifetime, 2071 publications have been published within this topic receiving 26976 citations. The topic is also known as: Hexone & Isobutyl methyl ketone.
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TL;DR: The proposed method uses a lithium metaborate fusion, dissolution of the fusion bead in 15% v v hydrochloric acid, extraction into a 4% solution of trioctylphosphine oxide in methyl isobutyl ketone, and aspiration into a nitrous oxide-acetylene flame.
9 citations
TL;DR: In this article, the RF values of a number of inorganic ions were measured in nine different mixtures of methyl isobutyl ketone with nitric acid, and the majority of the ions investigated were not extracted by these mixtures (RF = 0).
9 citations
Patent•
26 Nov 1986
TL;DR: In this article, a photopolymerization initiator was used to improve the adhesion of a polyester polyvinyl compound to a metal substrate by using a specified compound as a reactive diluent.
Abstract: PURPOSE:To improve adhesion of film to metal, by using a specified compound as a reactive diluent in a composition which consists mainly of a base resin, a reactive diluent and a photopolymerization initiator and forms a film by irradiation with ultraviolet rays. CONSTITUTION:The purpose ultraviolet-curing resin composition is prepared by using a base resin (A) (e.g., polyester polyvinyl compound), a reactive diluent partly or entirely consisting of (2-methyl-2-isobutyl-1,3-dioxolan-4-yl)methyl acrylate (B) and a photopolymerization initiator (e.g., benzophenone). By applying this composition to a substrate and irradiating it with ultraviolet rays, a film having excellent adhesion to the substance can be formed. The compound of formula I can be obtained by reacting methyl isobutyl ketone with glycerin and transesterifying the reaction product of formula II with methyl acrylate.
9 citations
TL;DR: In this paper, the mass transfer behavior in the extraction of phenol from water with methyl isobutyl ketone with single-droplet experiments were performed to measure mass-transfer coefficients under various conditions.
Abstract: To determine the mass-transfer behavior in the extraction of phenol from water with methyl isobutyl ketone, single-droplet experiments were performed to measure mass-transfer coefficients under various conditions. For this purpose, the droplet diameter, the initial concentration of phenol in the aqueous phase, the temperature, and the pH of the aqueous phase were investigated. For the aim of modeling, the molecular diffusivity was multiplied by an empirical factor (R). Then, the molecular diffusivity (Dd) was replaced by the enhanced molecular diffusivity (RDd) in the Kronig–Brink equation. Finally, the modified correlation of the mass-transfer coefficient model was found to fit well all of the experimental data under all experimental conditions.
9 citations
TL;DR: In this paper, a variety of aqueous digestion techniques for the determination of gold, in a wide variety of mineral matrices, were explored, and gold determinations were conducted using inductively coupled plasma-mass spectrometry (ICP-MS).
Abstract: In this paper, we explore a variety of aqueous digestion techniques for the determination of gold, in a wide variety of mineral matrices. Acid digestion methods, based upon modified aqua regia in which a larger proportion of nitric acid (5 : 1 HNO3 : HCl) is involved, competes effectively with fire assay to deliver accurate and precise values for gold in a fraction of the time. Using this ratio of acids, simple sand-bath digestions deliver recoveries of 95 to 98% of gold certified reference values, after a digestion time of approximately 35 minutes. Focused infrared digestions, however, take only 15 minutes, and deliver higher recoveries, in the range of 95 to 104% of gold reference values. An ultrasonic digestion with 1,3-dibromo-5,5-dimethylhydantoin acting as a source of bromine, delivered mediocre recoveries of gold. Gold determinations were conducted using inductively coupled plasma-mass spectrometry (ICP-MS). Solvent extraction of gold from digestion solutions effectively preconcentrate gold and significantly reduces interference from major elements, except for those samples containing high concentrations of iron. The use of 2-octanone as extraction solvent exhibited greater sensitivity than the use of the conventional solvent, methyl isobutyl ketone (MIBK). Although 2-ethylhexanol was also effective at extracting gold, its lengthy time for phase separation and memory effects, which increased wash-in and wash-out times, made it a less attractive extraction medium. For solvent extraction methods, microwave induced plasma-atomic emission spectrometry (MP-AES) was used for the determination of gold.
9 citations