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Topic: Isoalkane

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Alkane

Octane

Aliphatic compound

Napthalene

Benzene

Trans

Paraffin

Saturation (chemistry)

Chemical bond

Trans fat

Unsaturated fat

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	Balanced alkylation feed from etherification and isomerization - Patent 5672795 (Site not responding. Last check: 2007-11-05)
		While the isoalkanes can be conveniently withdrawn as a low boiling fraction from the separation zone, the purging of the isoalkane material results in the loss of valuable alkene materials or high capital and utility costs for a high recovery fractionation section.
		In cases where the isoalkane concentration is particularly high, additional rejection can be obtained by rejecting isoalkanes in a separate column upstream of the alkylation zone or by rejection from the overhead of the isomerization effluent splitter if provided.
		The removal of isoalkanes from the alkylation zone input stream prior to entering the separation zone is essential to prevent a high carryover of isobutane into the isomerization zone.
	www.freepatentsonline.com /5672795.html (8229 words)

	1. INTRODUCTION (Site not responding. Last check: 2007-11-05)
		Oxidation of isoalkanes is the single most important source of acetone for that region and season, contributing about 0.4 ppbv near the surface and 0.2 ppbv in the upper troposphere; plant decay is the next largest source.
		Oxidation of isoalkanes is a major source of acetone for most of the observational data sets used in the inversion, and the a priori appears to offer a good simulation of the observations.
		The C3-5 isoalkanes (propane, isobutane, isopentane) represent major atmospheric precursors of acetone and are simulated explicitly in the model.
	www-as.harvard.edu /chemistry/trop/publications/jacob2001/paper.new.htm (12100 words)

	Process to convert linear alkanes - Patent 4433190 (Site not responding. Last check: 2007-11-05)
		The process of claim 1 wherein the substantially linear alkane comprises a normal alkane having two to twenty carbon atoms or an organic compound containing a linear alkane segment having three to twenty carbon atoms.
		The process of claim 2 wherein the alkane is a normal alkane having two to twenty carbon atoms or an isoalkane containing a linear alkane segment having three to twenty carbon atoms.
		An isoalkane contains a methyl group branched at the end of a linear alkane segment as represented by ##STR1## ps wherein R is an organic moiety or hydrogen and n is an integer ranging from zero to about 20.
	www.freepatentsonline.com /4433190.html (6316 words)

	Compositional and Structural Characterization of Waxes Isolated from Bitumens (Site not responding. Last check: 2007-11-05)
		It has been demonstrated that, in crude oils, waxes may be paraffin type or microcrystalline type, depending on source of the crude oil.
		Unlike paraffin waxes that consist primarily of n-alkanes, microcrystalline waxes are dominated by cycloalkanes and isoalkanes.
		The degrees of crystallinity are estimated as 33% and 35%, respectively, for the waxes isolated from bitumens A and C. The crystallinity values are not related to n-alkanes contents in the waxes (cf., Table 4), indicating the effect of crystalline regions in isoalkanes, cycloalkanes, and aromatic compounds.
	pubs.acs.org /cgi-bin/sample.cgi/enfuem/2006/20/i02/html/ef0503414.html (4812 words)

	6 Analysis of potential or suspected PBT/vPvB substances in consumer products Mapping the occurrence of potential or ...
		Isoalkanes are contained in the products in concentrations ranging from 0.1-15 per cent.
		Isoalkanes are one of 23 different solvents in metal spray (22).
		The printed materials were various magazines, advertisements, etc. The isoalkanes in that study were grouped C8-C12, so there may be C8 isoalkanes that lie outside the scope of this study (24).
	www.mst.dk /chemi/01086008.htm (3111 words)

	inquiry project (Site not responding. Last check: 2007-11-05)
		To compare the steric hindrence, first a study is done to see how the boiling points of normal alkane and isoalkane differ.
		Again, the difference between the boiling points of isoalkane, isoaldehydes and isoketones are approximately same.
		The difference is based on the dipole attraction of the carbonyl group.
	www.sas.upenn.edu /~abraham/inquiryproject.html (1524 words)

	From Snappy Apparatus with increased yield and selectivity using side-by-side reaction zones Number:6,969,496 from the ...
		In the dehydrogenation process, fresh hydrocarbon feed is combined with recycle hydrogen and unconverted hydrocarbons.
		Dehydrogenatable hydrocarbons for this invention will preferably include isoalkanes having 3 or 5 carbon atoms.
		A suitable feed of dehydrogenatable hydrocarbons will often contain light hydrocarbons (i.e., those having less carbon atoms than the primary feed components) which, for the purpose of this invention, serve as contaminants.
	www.snappyquick.com /Patents/Apparatus_with__6969496.html (4584 words)

	Survey of Chemical Substances in Consumer Products, 52. – Mapping and health assessment of chemical substances in ...
		isoalkane type, which are listed on the EPA list of unwanted substances, are not specifically stated as ingredients in any of the products for which information about ingredients is available.
		Products have primarily been selected for analysis among products for which there was not already information available about ingredients.
		isoalkanes (may be found in products containing organic solvents, known to occur in certain impregnation products).
	www.mst.dk /udgiv/publications/2005/87-7614-644-8/html/kap03_eng.htm (2413 words)

	Bohan, Mathers & Associates Patent Abstracts (Page 3)
		Abstract: Solvent formulations used in thinning oil-based resins and in cleaning equipment contaminated with oil-based resins include mixtures of constituents with low-, or no-toxicity and flash points generally considered to be above flammability levels.
		The solvating power and drying characteristics of these formulations are equivalent to turpentine and mineral spirits, but without the safety concerns associated with those thinners.
		Further optional constituents include no more than 15% by weight of propylene glycol, no more than 20% by weight of isopropyl alcohol or ethyl alcohol, and no more than 10% by weight of an isoalkane compound.
	www.bohanmathers.com /abs_pg03.html (3822 words)

	A Mycobacterium Strain with Extended Capacities for Degradation of Gasoline Hydrocarbons -- Solano-Serena et al. 66 ... (Site not responding. Last check: 2007-11-05)
		even for isoalkanes with methyl anteiso structures, which are
		strain IFP 2173, however, is its ability to degrade some isoalkanes
		determined for degradation of these isoalkanes indicated that
	aem.asm.org /cgi/content/full/66/6/2392 (3702 words)

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