Cyclohexanone methylation

Symmetrical labile ethers such as cycloalkenyl ethers (15) or mixed acetals (16) can also be prepared from the 3-hydroxyl group by acid-catalyzed exchange etherification or by acid-catalyzed addition to cyclohexanone methyl enol ether. 

Py-GC/MS of Laropal K80 results in a number of intense oligomeric fragments, while smaller fragments are minor pyrolysis products [71]. Cyclohexene, cyclohexanol, cyclohexanone, methyl-cyclohexanone and methylene-cyclohexanone can be attributed to secondary pyrolysis products of the monomeric units (Figure 12.7). The most intense... 

Dissolution Measurement. Resist solutions 1n mixtures of Isoamyl acetate/cyclohexanone/methyl Isobutyl ketone (90 5 5 by volume) were filtered through 0.45 pm disc filters, then spin-coated onto silicon wafers at about 2000 rpm. The coated wafers were prebaked 1n a convection oven at 90°C for 1 hour, then stored 1n a desiccator. The basicities of the alkaline solutions were titrated by a standard HC1 solution with a Fisher Accument pH meter, Model 805 MP. The film thickness 1s about 2 pm. Resist dissolution was measured by a He-Ne laser Interferometer 1n a thermostated bath at the desired temperatures (12.131-... 

TreonJF, Crutchfield WE Jr, Kitzmiller KV The physiological response of animals to cyclohexanone, methyl cyclohexane and certain derivatives of these compounds. II. Inhalation. J Ind Hyg Toxicol 25 323, 1943... 

Chlorination. Fairly acidic compounds such as CH3COCH2COCH3, CH2(C00CH3)2, and CI2CHCOOCH3 are chlorinated in high yield by CF3SO2CI in combination with N(C2Hs)3 or DBU. Cyclohexanone, methyl phenylacetate, and acetophenone do not react. 

To evaluate the potential hostile effects of oxygenated solvents on Type II rigid polyfvinyl chloride), one must consider that PVC has very limited solubility. The most effective solvents are those which appear to be capable of some form of interaction with the polymer. Small (10) suggested that PVC is a weak proton donor and effective solvents are proton acceptors. Thus it was proposed that the polymer would be soluble in tetrahydrofuran ketones, e.g. cyclohexanone, methyl isobutyl ketone and nitro compounds such as nitrobenzene. Hansen (11) evaluated the solvency effects of twenty-six solvents on poly(vinyl chloride), a summary of his data with respect to oxygenated solvents is presented in part in Table I. 

Crystals from benzene + dioxane, a-isomer (racemate) mp 14X -143 , 0-isomer (meso form) mp 180. Substantially insol in water Sol in many organic solvents, such as acetone, xylene, cyclohexanone, methyl naphthalenes. 

Plastic solid, d 1.406 n 1.54. Stabilizers are necessary to prevent discoloration from exposure to light or heat. Solvents for unmodified polyvinyl chloride of high mol wt cyclohexanone, methyl cyclohexanone, dimethyl formamide, nitrobenzene, tetrahydrofuran, isophorone, mesityl oxide. Solvents for lower polymers dipropyl ketone, methyl amyl ketone, methyl isobutyl ketone, acetonylacetone, methyl ethyl ketone, dioxane, methylene chloride. 

Emission from a PVC-coated cork material is shown in Table 3.2-7. The principal emissions derive from the cork material and the binder. Horn et al. (1997) have additionally reported phenol, furfural, cyclohexanone, methyl benzoate, benzophenone and BHT emissions. Some of these, e.g. BHT, cyclohexanone and possibly phenol derive from the PVC coating. 

Class II. Butyl glycol, chlorobenzene, cyclohexanone, dimethylformamide, diisobutyl ketone, ethyl glycol, ethylbenzene, furfuryl alcohol, isopropylbenzene, carbon disulfide, methyl glycol, methyl acetate, methyl cyclohexanones, methyl formate, styrene, tetrachloroethylene, tetrahydro-furan, toluene, 1,1.1-trichloroethane, trimethylbenzenes, xylenes. 

Polyvinyl chloride Tetrahydrofuran, cyclohexanone, methyl ethyl ketone, dimethyl formamide Methanol, acetone, heptane... 

Cyclohexanone, 4-(1,1-dimethylpropyl)-. See Isopentylcyclohexanone Cyclohexanone iso-oxime. See Caprolactam Cyclohexanone, isopentyl-. See Isopentylcyclohexanone Cyclohexanone, methyl-. See Methylcyclohexanone... 

Adhesive tape Hook and loop fastener Coating process Cleaning unit Ketones (MEK, cyclohexanone, methyl isobutyl ketone, etc.)... 

Coating plants Adhesive tapes, Magnetic tapes, Adhesive films. Photographic p ers. Adhesive labels Naphtha, toluene, aleohols, esters, ketones (cyclohexanone, methyl ethyl ketone), dimelfaylformamide, tetrahydrofuran, chlorinated hydrocarbons, xylene, dioxane... 

Wilczura, H. Talpur, M. M. A. Kaiiii, A. Kasprzycka-Guttman, T. Excess enthalpies of cyclohexane + cyclohexanone, cyclohexane + methyl methacrylate, and cyclohexanone + methyl methacrylate at 298.15 KJ. Chem. Eng. Data 1995,40, 1233-1236... 

SbCla, AsCla, cyclohexane (above 35°C), benzene, ethylbenzene, CH2Cl2,CHCla, chlorobenzene, cyclohexanone, methyl ethyl ketone, dimethyl formamide, ethyl acetate, methyl benzoate, 1,3-dioxolane, methyl to butyl phthalate, 1-nitropropane, pyridine CS2... 

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