Topic
Isopropyl alcohol
About: Isopropyl alcohol is a research topic. Over the lifetime, 3064 publications have been published within this topic receiving 27354 citations. The topic is also known as: Rubbing Alcohol & Propan-2-ol.
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IBM1
TL;DR: In this article, the developers and strippers are disclosed for free radical-initiated, addition polymerizable resists, cationically cured resists and solder masks and Vacrel photoresists.
Abstract: Simple, environmentally friendly developers and strippers are disclosed for free radical-initiated, addition polymerizable resists, cationically cured resists and solder masks and Vacrel photoresists. In all cases both the developers and the strippers include gamma butyrolactone, propylene carbonate and benzyl alcohol, optionally also including a minor amount of methanol, ethanol, isopropyl alcohol, propylene glycol monomethylacetate, ethylene glycol monomethyl ether, formamide, nitromethane, propylene oxide, or methyl ethyl ketone, acetone and water.
55 citations
TL;DR: Palygorskite clays containing 2, 4, 6 or 10% lanthanum (w/w) were prepared by ion exchange from acid-leached natural clays as mentioned in this paper.
53 citations
TL;DR: The physicochemical interactions between aroma compounds and sodium caseinate were studied by complementary techniques involving the protein in aqueous solution at 25 or 75 g/L (exponential dilution and equilibrium dialysis) or in a solid state (sorption and infrared spectroscopy) as discussed by the authors.
53 citations
TL;DR: In this paper, a continuous epoxidation of propylene with 30-wt% hydrogen peroxide in isopropyl alcohol solvent over titanium silicalite (TS-1) zeolite was carried out and the good selectivity to propylene oxide and stability of TS-1 were obtained.
Abstract: Continuous epoxidation of propylene with 30-wt% hydrogen peroxide in isopropyl alcohol solvent over titanium silicalite (TS-1) zeolite was carried out and the good selectivity to propylene oxide and stability of TS-1 were obtained. After the reaction of 263 h, the deactivation of the TS-1 catalyst occurred. The spent catalysts were regenerated by calcinations at 550 °C for 5 h, washing with isopropyl alcohol solvent or washing with dilute hydrogen peroxide, and the activity evaluation of the regenerated catalysts were studied. The deactivated and regenerated catalysts were characterized by scanning electron microscopy, X-ray diffraction, Fourier-transform infrared spectroscopy, 29Si magic angle spinning nuclear magnetic resonance, thermogravimetric analysis and Brunauer–Emmett–Teller method. The compositions deposited on the surface of the catalysts were collected by solvent extraction and were analyzed by gas chromatography–mass spectrometry (GC–MS). The results showed that calcination and washing with dilute hydrogen peroxide were highly effective regeneration methods and the catalytic activity of TS-1 catalysts can be mostly recovered after these treatments. Washing with isopropyl alcohol had a subtle effect in recovering the catalytic activity of the TS-1 catalyst. The major cause of the deactivation of the TS-1 catalyst for epoxidation is blocking micropores induced by bulky organic by-products formed by consecutive reactions of target reaction, such as dimerization or oligomerization of propylene oxide, etherification of propylene oxide with isopropyl alcohol. In addition, leaching of framework titanium also contributes to the deactivation of the catalyst.
53 citations
TL;DR: Trisammonium geranyl diphosphate (TGSD) was used in this article to synthesize halogen replacement reactions, halogen substitution reactions, hydroxy by halogen.
Abstract: Trisammonium geranyl diphosphate
reactant: 1.54 g (10 mmol) of geraniol
intermediate: 0.83 g (4.8 mmol) of geranyl chloride
product: trisammonium geranyl diphosphate
Keywords:
phosphonation;
replacement reactions, halogen by diphosphate;
replacement reactions, hydroxy by halogen;
acetonitrile;
buffer solutions, ammonium bicarbonate in aqueous isopropyl alcohol;
buffer solutions, ammonium bicarbonate in aqueous isopropyl alcohol and acetonitrile;
cation exchange resin, dowex ag 50w-xb, ammonium form;
cellulose chromatography, preparation of column;
N-chlorosuccinimide;
dichloromethane (methylene chloride);
tris(tetrabutylammonium) hydrogen pyrophosphate trihydrate, preparation from disodium dihydrogen pyrophosphate;
ion exchange chromatography;
lyophilization
53 citations