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Topic: Propene

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	Metals coated with 3,3,3-trifluoro-2-trifluoromethyl propene/vinylidene fluoride copolymer compositions - Patent ...
		A coated article is provided which comprises a metal substrate and an overlying layer of a composition comprising a copolymer of 3,3,3-trifluoro-2-trifluoromethyl propene and vinylidene fluoride and an effective amount of a stabilizing agent.
		According to the present invention, a coated article is provided which comprises a metal substrate and an overlying layer of a composition comprising a copolymer of 3,3,3-trifluoro-2-trifluoromethyl propene and vinylidene fluoride and an effective amount of a stabilizing agent.
		The copolymers may be prepared by copolymerizing 3,3,3-trifluoro-2-trifluoromethyl propene and vinylidene fluoride monomers by contacting the monomers in a suitable liquid polymerization medium in the presence of a free radical generating polymerization initiator.
	www.freepatentsonline.com /3936569.html (2006 words)

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	IngentaConnect Polycrystalline-Silicon LPCVD by Propene-Assisted Silane Pyrolysi...
		Also addressed are the variation in process pattern with the longitudinal coordinate, the change in effective reaction order in propene when passing from 640 to 700°C, and the dependence of consumed silane percentage on the ratio of the total area of the wafers and the walls to the volume of the reaction zone.
		These relationships are explained within a model whereby the pyrolysis proceeds by a free-radical chain mechanism and basically follows a heterogeneous route at lower temperatures and a homogeneous route as well as a heterogeneous one at higher temperatures.
		It is found that polycrystalline-silicon films deposited in the presence of propene have a much lower conductivity and exhibit a much lower dissolution rate in a KOH etchant.
	www.ingentaconnect.com /content/maik/rumi/2002/00000031/00000005/00453591 (245 words)

	electrophilic addition - unsymmetrical alkenes and bromine
		An unsymmetrical alkene is one like propene in which the groups or atoms attached to either end of the carbon-carbon double bond are different.
		For example, in propene there are a hydrogen and a methyl group at one end, but two hydrogen atoms at the other end of the double bond.
		The bromine is a very "polarisable" molecule and the approaching pi bond in the propene induces a dipole in the bromine molecule.
	www.chemguide.co.uk /mechanisms/eladd/unsymbr2.html (437 words)

	PROPENE (Site not responding. Last check: 2007-10-25)
		Propene consists of three atoms of carbon and six atoms of hydrogen
		This is the raw material for the manufacture of several organic chemicals including acetone, isopropyl alcohol, acrylonitrile and polypropylene plastic.
		Propene is not classifiable with regard to its carcinogenicity to humans.
	www.neath-porttalbot.gov.uk /html/environment/pollution/on-line/species/prpe.html (160 words)

	Cloning, Expression, and Site-Directed Mutagenesis of the Propene Monooxygenase Genes from Mycobacterium sp. Strain ...
		Cloning, Expression, and Site-Directed Mutagenesis of the Propene Monooxygenase Genes from Mycobacterium sp.
		Propene oxide formation activities obtained from whole-cell assays are indicated on the right.
		Cloning and expression of the genes encoding the propene monooxygenase from Xanthobacter Py2.
	aem.asm.org /cgi/content/full/71/4/1909 (4201 words)

	Low-Temperature Kinetics of Reactions of the OH Radical with Propene and 1-Butene Studied by a Pulsed Laval Nozzle ...
		Low-Temperature Kinetics of Reactions of the OH Radical with Propene and 1-Butene Studied by a Pulsed Laval Nozzle Apparatus Combined with Laser-Induced Fluorescence
		The kinetics of the reactions of the OH radical with propene and 1-butene are studied at T = 103 K. The low-temperature environment is provided by a pulsed Laval nozzle supersonic expansion of nitrogen with admixed radical precursor and reactant gases.
		The gas number density and temperature distributions in the flow are characterized by both dynamic pressure measurements and laser-induced fluorescence (LIF) spectroscopy of OH radicals excited in the (1,0) band of the A
	pubs.acs.org /cgi-bin/abstract.cgi/jpcafh/2001/105/i33/abs/jp010809d.html (248 words)

	Polymerization Special Feature: Design of stereoselective Ziegler-Natta propene polymerization catalysts -- Busico et ...
		The enantioselectivity in the insertion of propene, in particular,
		of propene, and a syndiotactically enriched polypropylene was
		for propene polymerization in homogeneous phase (6, 7, 13, 14).
	www.pnas.org /cgi/content/full/103/42/15321 (3403 words)

	Polymerization Special Feature: Design of stereoselective Ziegler-Natta propene polymerization catalysts -- Busico et ...
		Consecutive monomeric units with equal or opposite relative configurations at the stereogenic tertiary C atoms are denoted as meso (m) and racemo (r) diads, respectively, according to a nomenclature originally introduced by Bovey (5).
		The chirality of coordination of propene to a metal center.
		QM transition states for the lowest energy 1,2 and 2,1 propene insertions into a growing polypropylene chain (simulated with an iso-butyl group) at a model active cation of 7 with
	www.pnas.org /cgi/content/figsonly/103/42/15321 (278 words)

	Projection Experiment: Hydroxylation of Propene
		1,2-dibromopropane reacts with zinc in DMF to form propene (1).
		Alkaline potassium permanganate converts propene to 1,2-propandiol (2).
		Since a syn-hydroxylation takes place, the intermediate is thought to be a cyclic ester (3), whose hydrolysis leads to glycol.
	www.uni-regensburg.de /Fakultaeten/nat_Fak_IV/Organische_Chemie/Didaktik/Keusch/p1_prop_add-e.htm (261 words)

	Propene (Site not responding. Last check: 2007-10-25)
		Organic Syntheses presents to the organic chemistry community detailed experimental methods in a standard format for the synthesis of organic compounds.
		based on phosphazene, siloxane or propene backbones for industrial...
		reactions of iridacyclopentadienes with propene, possibly through transient iridium alkylidene...
	www.chemindustry.com /apps/search?search_term=Propene (202 words)

	Definition of propene - Merriam-Webster Online Dictionary
		Learn more about "propene " and related topics at Britannica.com
		Find more about "propene " instantly with Live Search
		See a map of "propene " in the Visual Thesaurus
	www.merriam-webster.com /dictionary/propene (41 words)

	polymerisation of alkenes
		If your syllabus simply mentions the structure of poly(propene) with no more detail, this is adequate.
		The trick is to think about the shape of the propene in the right way:
		Now line lots of them up in a row and join them together.
	ibchem.com /IB/ibnotes/full/ope_htm/polymers.htm (1469 words)

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