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Topic: Unsaturated hydrocarbon

Related Topics

Hydrocarbon

Diene

Diacetylene

Alkene

Aromatic ring

Saturated hydrocarbon

Molecular formula

Aromatic hydrocarbon

Organic chemistry

Alkyne

Carbon

Alkane

Ethyne

Benzene

Butadiene

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	Unsaturated hydrocarbon - Wikipedia, the free encyclopedia
		Unsaturated hydrocarbon is the name of a type of organic molecule in organic chemistry, that contains a chain of carbons.
		The physical properties of unsaturated hydrocarbons are very similar to those of the corresponding saturated compounds.
		Except for aromatic compounds, unsaturated hydrocarbons are highly reactive and undergo addition reactions to their multiple bonds.
	www.wikipedia.org /wiki/Unsaturated_hydrocarbon (116 words)

	Phenol-modified hydrocarbon resins with a high OH-number, method for the preparation thereof - Patent 4471106 (Site not responding. Last check: 2007-10-09)
		A phenolic-modified hydrocarbon polymer as claimed in claim 1, further characterized in that it is prepared by the copolymerization of 34% by weight of phenolic compound, 46% by weight of aromatic unsaturated hydrocarbon and 20% by weight isobutene.
		A phenolic-modified hydrocarbon polymer as claimed in claim 1 wherein the aromatic unsaturated hydrocarbon is obtained from the distillate from high temperature coal tar boiling in the range of 140.degree.
		C., or is an unsaturated aromatic hydrocarbon produced by cracking of naphtha or gas oil, or by the pyrolysis of cracking residues and are enriched in a fraction which boils in the temperature range of 160.degree.-220.degree.
	www.freepatentsonline.com /4471106.html (2166 words)

	Process and device for the separation of an unsaturated hydrocarbon from a fluid mixture with other hydrocarbons - ... (Site not responding. Last check: 2007-10-09)
		A process according to claim 1, wherein the mixture of complexing agent and dissociated unsaturated hydrocarbon is passed at superatmospheric pressure to one side of a second semiselective membrane with a non-porous, but permeable active layer and in that the unsaturated hydrocarbon migrates to the other side of the membrane and is discharged.
		The present invention relates to a process for the separation of an unsaturated hydrocarbon from a fluid mixture with other hydrocarbons wherein in a first stage the unsaturated hydrocarbon migrates through a membrane to a carrier fluid and in a second stage the unsaturated hydrocarbon is separated from the carrier fluid and removed.
		Preferably the mixture of complexing agent and dissociated, unsaturated hydrocarbon is passed at superatmospheric pressure to one side of a second semiselective membrane with a non-porous active layer wherein the unsaturated hydrocarbon migrates to the other side of the membrane and is discharged.
	www.freepatentsonline.com /5498339.html (2976 words)

	United States Patent Application: 0020022086
		A coherent rubber composition is produced by: (a) coating the rubber particles with a polymeric unsaturated hydrocarbon compound; (b) mixing the resulting coated rubber particles with a bonding material; and (c) allowing and/or causing the resulting mixture to form the desired coherent rubber composition.
		The polymeric unsaturated hydrocarbon compound is conveniently a compound having a long chain aliphatic structure, for example a hydroxyl-substituted polymer of 1,3-butadiene.
		A method according to claim 1, wherein the polymeric unsaturated hydrocarbon compound is used in an amount in the range 0.2 to 0.7% by weight of the rubber particles.
	appft1.uspto.gov /netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/PTO/search-bool.html&r=1&f=G&l=50&co1=AND&d=PG01&s1=20020022086.PGNR.&OS=DN/20020022086&RS=DN/20020022086 (2745 words)

	Experiment 16
		Saturated hydrocarbons are those in which the carbon atoms are "saturated" with hydrogen, that is, they are bonded to as many hydrogens as possible.
		Unsaturated hydrocarbons on the other hand have at least one double bond, and so the molecule is no longer "saturated" with hydrogen (there are now less hydrogens per carbon atom because of the additional carbon carbon bond).
		Aromatic hydrocarbons on the other hand are a different type of highly unsaturated molecule having benzene as their parent compound.
	capital2.capital.edu /faculty/wbecktel/HCarb.htm (1123 words)

	Method of selectively separating unsaturated hydrocarbon - US Patent 5749943 (Site not responding. Last check: 2007-10-09)
		Methods of separating unsaturated hydrocarbon from a mixed material of unsaturated and saturated hydrocarbon by applying a membrane in petroleum refining industries, petrochemical industries and the like have been researched over a long period of time, and some partial solutions were reported.
		Therefore, the membrane separation methods of separating unsaturated hydrocarbon from a mixed material of unsaturated and saturated hydrocarbon are not widely applied in industries due to high cost and lack of satisfactory properties.
		When the absorption time of hydrocarbon to the polyimide resin containing fluorine is cut, the solubility ratio (unsaturated/saturated hydrocarbon) before absorption equilibrium may be larger than the ratio at the absorption equilibrium due to a difference in absorption behavior between unsaturated and saturated hydrocarbon.
	www.patentstorm.us /patents/5749943.html (4115 words)

	Class Definition for Class 585 - CHEMISTRY OF HYDROCARBON COMPOUNDS
		For example, when one claim is to a solid resinous hydrocarbon polymer and another is to a liquid hydrocarbon polymer, the patent is classified as an original in the class which provides for the solid resinous polymer.
		If a synthesis process leads to two products, a hydrocarbon and a nonhydrocarbon, both of which are intended to be recovered from the process, the patent is classified as an original in the class providing for the nonhydrocarbon synthesis and cross-referenced to Class 585 when the hydrocarbon synthesis is proper for this class.
		Subject matter where the unsaturated hydrocarbon which is hydrogenated is an impurity or contaminant in a desired hydrocarbon, a substantial amount of which desired hydrocarbon is present in the feedstock to the process.
	www.uspto.gov /go/classification/uspc585/defs585.htm (5630 words)

	Catalyst and processes for the selective hydrogenation of unsaturated compounds in hydrocarbon streams - US Patent ... (Site not responding. Last check: 2007-10-09)
		These hydrocarbon streams frequently contain unsaturated compounds, the presence of which is known to give rise to problems, in particular during processing and/or storage, or which are not the desired product, and which therefore are undesired components of the corresponding hydrocarbon streams.
		In the processing of C5+ streams (CS+: hydrocarbons having at least 5 carbon atoms, pyrolysis gasoline), di- and polyenes, such as pentadiene and cyclopentadiene, alkynes and/or aromatics having unsaturated substituents, such as phenylacetylene and styrene, are undesired in the production and processing of aromatics or carburetor fuel.
		Processes for the selective hydrogenation of unsaturated compounds in hydrocarbon streams containing them are known both in the form of liquid-phase hydrogenation or mixed gas/liquid-phase hydrogenation, by the trickle-bed or liquid-phase procedure, and in the form of pure gas-phase hydrogenation, various process engineering measures for improving the selectivity having been published.
	www.patentstorm.us /patents/6437206.html (7353 words)

	[No title] (Site not responding. Last check: 2007-10-09)
		Q represents H; a saturated or unsaturated hydrocarbon group having 1-24 atoms; phenyl; or benzyl; T represents a saturated or unsaturated hydrocarbon chain having 1-24 atoms; V represents a positively charged moiety; bl represents 1 or 2; b2 represents 1-3; W represents LZ; L represents a saturated or unsaturated hydrocarbon chain having 10-24 atoms; Z
		From 2/3 to all of the atoms in the hydrocarbon chain or group are saturated or unsaturated carbon atoms.
		Q represents a hydrogen atom or a saturated or unsaturated hydrocarbon group having 1-24 atoms, phenyl, or benzyl..
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=03/86477.031023&ELEMENT_SET=DECL (4752 words)

	A process for preparing a composition containing a polymer of unsaturated hydrocarbon, a C.sub.1-4 alkyl or ... (Site not responding. Last check: 2007-10-09)
		This invention relates to a composition containing a polymer of unsaturated hydrocarbon, a C.sub.1-4 alkyl or hydroxyalkylether of starch having a degree of substitution of at least 0.25 and a vinyl or acryl polymer as a compatibilizing agent.
		As in Dutch application 8902321, the polymers of unsaturated hydrocarbons to be used are in the first place polyolefins, such as the different kinds of polyethylene and polypropylene, and furthermore polystyrene, as well as copolymers of these unsaturated hydrocarbons; in particular, ethylene polymers are used.
		Preferably, 20-70% by weight of polymer of unsaturated hydrocarbon, 20-80% by weight of starch ether, 11-19% by weight of compatibilizing copolymer and 2-8% by weight of polyhydric alcohol is used in the composition of this invention.
	freepatentsonline.com /5296526.html (1507 words)

	High consistency organosiloxane elastomer compositions curable by a platinum-catalyzed hydrosilation reaction - Patent ... (Site not responding. Last check: 2007-10-09)
		The aliphatically unsaturated hydrocarbon radicals represented by R.sup.4 contain from 2 to about 20 carbon atoms and include vinyl, allyl and butenyl, with vinyl being preferred based on the availability and cost of the intermediates used to prepare polydiorganosiloxanes containing these radicals.
		The molar ratio of silicon bonded hydrogen atoms to vinyl or other aliphatically unsaturated hydrocarbon radicals in compositions curable by a hydrosilation reaction is critical with respect to the properties of the cured elastomer.
		Complexes with low molecular weight organosiloxanes wherein the silicon bonded hydrocarbon radicals are vinyl and either methyl or 3,3,3-trifluoropropyl are particularly preferred because of their ability to catalyze a rapid curing of the elastomer at temperatures of at least about 70.degree.
	www.freepatentsonline.com /4857564.html (3955 words)

	Unsaturated Hydrocarbons Information
		Unsaturated hydrocarbons are characterized by having two adjacent carbon atoms linked by two or three bonds instead of only one.
		Hydrocarbons with a double bond ring are called cyclo-olefins or cycloalkenes; those two double bonds in the structure are called diolefins or dienes.
		Hydrocarbons with a triple bond are called acetylenes or alkynes.
	www.lloydminsterheavyoil.com /unsaturated.htm (267 words)

	Solid polymer electrolyte of an organopolysiloxane crosslinked with polyalkylene oxide - Patent 5112512 (Site not responding. Last check: 2007-10-09)
		Component (B) is a polyoxyalkylene having an aliphatically unsaturated hydrocarbon group at both chain terminals or a mixture of molecules in which some have an aliphatically unsaturated hydrocarbon group at both ends and some having the group at only one end.
		R.sup.5 is a divalent hydrocarbon group as exemplified by alkylene groups such as methylene, ethylene, propylene, butylene, pentylene, hexylene, and heptylene; and by arylalkylene and alkylarylene chain groups such as phenylpropylene and propylphenylene.
		In the preceding formula, Q is an aliphatically unsaturated hydrocarbon group, R.sup.7 is a divalent hydrocarbon group, R.sup.8 is an alkylene group, R.sup.9 is a monovalent hydrocarbon group, and r is an integer with a value of 1 to 100.
	www.freepatentsonline.com /5112512.html (3345 words)

	hydrocarbon. The Columbia Encyclopedia, Sixth Edition. 2001-05
		The hydrocarbons differ both in the total number of carbon and hydrogen atoms in their molecules and in the proportion of hydrogen to carbon.
		Many hydrocarbons are useful as fuels; they burn in air to form carbon dioxide and water.
		Many important compounds are derived from hydrocarbons, either by substitution or replacement by some other chemical group or element of one or more of the hydrogen atoms of the hydrocarbon molecule, or by the addition of some element or group to a double or triple bond (in an unsaturated hydrocarbon).
	www.bartleby.com /65/hy/hydrocar.html (477 words)

	Addition of dialkylhalogeno-hydridosilanes to unsaturated hydrocarbon compounds - Patent 4254271 (Site not responding. Last check: 2007-10-09)
		The present invention relates to a process for the addition of dialkylhalogeno-hydridosilanes, in particular dialkylchloro-hydridosilanes, onto unsaturated hydrocarbons, in particular onto alkenes and alkines, in the presence of catalytic amounts of an aluminum halide or aluminum oxyhalide.
		The ability of the Si-H bond to undergo addition reactions with unsaturated hydrocarbons is of particular practical importance for the chemistry of silicones.
		Unsaturated compounds which are used are, in particular, olefins and acetylenes.
	freepatentsonline.com /4254271.html (1499 words)

	Effects of phospholipid unsaturation on the bilayer nonpolar region: a molecular simulation study -- Róg et al. ...
		Effects of phospholipid unsaturation on the bilayer nonpolar region: a molecular simulation study -- Róg et al.
		Effect of alkyl chain unsaturation and cholesterol intercalation on oxygen transport in membranes: a pulse ESR spin labeling study.
		Influence of phospholipid unsaturation on the cholesterol distribution in membranes.
	www.jlr.org /cgi/content/full/45/2/326 (5287 words)

	Polymer Glossary
		Unsaturated hydrocarbon (CH2 CH2) part of ethylene-propylene rubber, EPM or EPDM.
		Unsaturated hydrocarbon (CH2 C(CH3)CHCH2) part of isoprene rubber, IR and butyl rubber, IIR.
		Unsaturated hydrocarbon (CH2 CHCH3), part of ethylene-propylene rubber, EPM and EPDM.
	www.trelleborg.com /template/T005.asp?id=484&lang=2 (339 words)

	The MSDS HyperGlossary: Hydrocarbon
		Hydrocarbons can be divided into particular classes depending on their properties.
		Unsaturated fats, those with one (mono) or many (poly) double bonds, are less likely to form artery-clogging plaques.
		Hydrocarbons and their chemical derivatives are often quite flammable.
	www.ilpi.com /msds/ref/hydrocarbon.html (786 words)

	Mr. Hole's Online Chemistry Glossary: U (Site not responding. Last check: 2007-10-09)
		unsaturated compound: an organic compound with one or more double or triple carbon-carbon bonds.
		unsaturated hydrocarbon: a hydrocarbon containing one or more double bonds.
		unsaturated solution: a solution containing less solute than a saturated solution at the same temperature and pressure.
	home.earthlink.net /~mrhole/chem/glossary/u.html (277 words)

	Catalytic dehydrohalogenation process for allylically halogenated unsaturated hydrocarbon polymers - Patent 4145492
		This invention relates to the preparation of polymeric hydrocarbons having conjugated diene functionality and more particularly to a novel process for the dehydrohalogenation of allylically halogenated olefinically unsaturated hydrocarbon polymers, the halogen being chlorine or bromine.
		A wide variety of unsaturated hydrocarbon polymers may be halogenated to produce an allylically halogenated polymer suitable for use in the present invention.
		Numerous methods are known for producing allylically halogenated unsaturated hydrocarbon polymers such as by using molecular chlorine, sulfuryl chloride, trichloromethanesulfonyl chloride and tert-butyl hypochlorite.
	www.freepatentsonline.com /4145492.html (4294 words)

	Lipids
		The terms saturated, mono-unsaturated, and poly-unsaturated refer to the number of hydrogens attached to the hydrocarbon tails of the fatty acids as compared to the number of double bonds between carbon atoms in the tail.
		Fats, which are mostly from animal sources, have all single bonds between the carbons in their fatty acid tails, thus all the carbons are also bonded to the maximum number of hydrogens possible.
		The hydrocarbon tails of the fatty acids are still hydrophobic, but the phosphate group end of the molecule is hydrophilic because of the oxygens with all of their pairs of unshared electrons.
	biology.clc.uc.edu /courses/bio104/lipids.htm (1474 words)

	chemistry_vocab (Site not responding. Last check: 2007-10-09)
		unsaturated hydrocarbon in which at least one pair of carbon atoms is joined by a double covalent bond
		unsaturated hydrocarbon in which at least one pair of carbon atoms is joined by a triple covalent
		hydrocarbon formed when one or more hydrogen atoms in a hydrocarbon ring or chain is replaced by a different atom or group of atoms
	www.gscience2000.org /chemistry_vocab.html (1162 words)

	Glencoe Online Science Quiz Chapter
		The side chain on an alkane that appears to replace a hydrogen on the straight chain is a _________________.
		Hydrocarbons with __________ carbon atoms will be collected at the highest point on a fractionating tower.
		In fractional distillation the hydrocarbons composed of fewer carbon atoms rise up the colam in the form of a _______________.
	www.glencoe.com /qe/scienceOLC.php?qi=9140 (320 words)

	Search Results for unsaturated - Encyclopædia Britannica
		Unsaturated polyesters are linear copolymers containing carbon-carbon double bonds that are capable of undergoing further polymerization in the presence of free-radical initiators.
		Unsaturated fatty acids have structures similar to those of saturated ones but contain at least one or more olefinic, or double bond.
		Unsaturated carbon centres—including those involving ordinary carbon–carbon double bonds and those involving the extended cyclic systems of alternate single and double bonds known as aromatic...
	www.britannica.com /search?query=unsaturated&submit=Find&source=MWTEXT (486 words)

	Radiation sensitive polymers of oxygen-substituted maleimides and elements containing same - Patent 4048146
		The element of claim 23 wherein at least one of the additional polymerized ethylenically unsaturated monomers is selected from the group consisting of acrylamide, acrylonitrile, isobornyl methacrylate, butyl methacrylate, chloroethyl methacrylate, ethyl methacrylate, hydroxyethyl methacrylate, methyl vinyl ketone, methyl methacrylate and styrene.
		The hydrocarbon group may be substituted with substituents which do not detrimentally affect the properties of the polymers of the present invention.
		Polymerizable monomers having the formula ##STR12## wherein R is a hydrocarbon group having from 2 to 20 carbon atoms, preferably a bridged hydrocarbon group having from 6 to 10 carbon atoms which are useful in making the polymers described herein, can be prepared according to the method of Schwartz and Lerner, J. Org.
	www.freepatentsonline.com /4048146.html (5659 words)

	United States Patent Application: 0040166084
		In R.sup.7, preferred examples of the fatty acid which may be ester-bonded or amide-bonded to the saturated hydrocarbon group at the.omega.-position thereof include isostearic acid, 12-hydroxystearic acid and linoleic acid.
		As R.sup.8, a hydrogen atom and hydrocarbon groups which may be substituted with 1 to 3 substituents selected from the group consisting of a hydroxy group, hydroxyalkoxy groups and alkoxy groups and have 1 to 8 carbon atoms in total are preferred.
		[0024] wherein, R.sup.4a represents a linear, branched or cyclic, saturated or unsaturated C.sub.7-19 hydrocarbon group which may be substituted with a hydroxy group, Z.sup.1 represents a methylene or methine group, a broken line represents the presence or absence of a.pi.
	appft1.uspto.gov /netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=/netahtml/PTO/srchnum.html&r=1&f=G&l=50&s1="20040166084".PGNR.&OS=DN/20040166084&RS=DN/20040166084 (4596 words)

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