Isobutene See Isobutylene

Isobutanethiol. See 2-Methyl-1-propanethiol Isobutanoic acid. See Isobutyric acid isobutanol HP, Isobutanol. See Isobutyl alcohol Isobutanolamine Isobutanol-2 amine. See Aminomethyl propanol Isobutene. See Isobutylene Isobutene homopolymer Isobutene polymer. See Polyisobutene Isobutene trimer. See Triisobutylene Isobutenol. See Methallyl alcohol Isobutenyl chloride. See 3-Chloro-2-methylpropene... 

Indenopyrene, see Indeno[l,2,3-crf pyrene l//-Indole, see Indole Indolene, see Indoline Inexit, see Lindane Inhibisol, see 1,1,1-Trichloroethane Insecticide 497, see Dieldrin Insecticide 4049, see Malathion Insectophene, see a-Endosulfan, p-Endosulfan Intox 8, see Chlordane Inverton 245, see 2,4,5-T lodomethane, see Methyl iodide IP, see Indeno[l,2,3-crf pyrene IP3, see Isoamyl alcohol Ipaner, see 2,4-D IPE, see Isopropyl ether IPH, see Phenol Ipersan, see Trifluralin Iphanon, see Camphor Isceon 11, see Trichlorofluoromethane Isceon 122, see Dichlorodifluoromethane Iscobrome, see Methyl bromide Iscobrome D, see Ethylene dibromide Isoacetophorone, see Isophorone a-Isoamylene, see 3-Methyl-l-butene Isoamyl ethanoate, see Isoamyl acetate Isoamylhydride, see 2-Methylbutane Isoamylol, see Isoamyl alcohol Isobac, see 2,4-Dichlorophenol Isobenzofuran-l,3-dione, see Phthalic anhydride 1,3-Isobenzofurandione, see Phthalic anhydride IsoBuAc, see Isobutyl acetate IsoBuBz, see Isobutylbenzene Isobutane, see 2-Methylpropane Isobutanol, see Isobutyl alcohol Isobutene, see 2-Methylpropene Isobutenyl methyl ketone, see Mesityl oxide Isobutyl carbinol, see Isoamyl alcohol Isobutylene, see 2-Methylpropene Isobutylethylene, see 4-Methyl-l-pentene Isobutyl ketone, see Diisobutyl ketone Isobutyl methyl ketone, see 4-Methyl-2-pentanone Isobutyltrimethylmethane, see 2,2,4-Trimethylpentane Isocumene, see Propylbenzene Isocyanatomethane, see Methyl isocyanate Isocyanic acid, methyl ester, see Methyl isocyanate Isocyanic acid, methylphenylene ester, see 2,4-Toluene-diisocyanate... 

Isoamyl acetate see 3-Methylbutyl ethanoate Isoamyl alcohol see 3-Methylbutan-l-ol heta.-Isoamylene see 2-Methylbut-2-ene Isohutane see 2-Methylpropane Isohutanoic acid see 2-Methylpropanoic acid Isohutanol see 2-Methylpropan-l-ol Isobutene see 2-Methylpropene Isobutyl acetate see 2-Methylpropyl ethanoate Isobutyl alcohol see 2-Methylpropan-l-ol Isobutylbenzene see (2-Methylpropyl)benzene Isobutyl chloride see l-Chloro-2-methylpropane Isobutylene see 2-Methylpropene Isobutylene oxide see 2,2-Dimethyloxirane Isobutyl ethanoate see 2-Methylpropyl ethanoate Isobutyl methyl ketone see 4-Methylpentan-2-one Isobutyraldehyde see 2-Methylpropanal Isobutyric acid see 2-Methylpropanoic acid Isocyanic acid butyl ester see Butyl isocyanate Isohexane see 2-Methylpentane Isooctane see 2,2,4-Tiimethylpentane Isopentane see 2-Methylbutane Isopentanol see 3-Methylbutan-l-ol Isopentyl alcohol see 3-Methylbutan-l-ol Isoprene see 2-Methylbuta-l,3-diene Isopropanol see Propan-2-ol Isopropenylbenzene... 

Polybutenes. Polybutenes are produced by controlled polymerization of butenes and isobutene (isobutylene) (see Butylenes). A typical polyisobutylene stmcture is... 

An important intermediate for synthetic p-ionone (36) is the C8 building block methyl heptenone (37). In addition to the synthesis shown above, two further processes are known for its industrial production. In the process of Rhodia INC 36), the starting material is isoprene, and methyl heptenone (37) is obtained via prenyl chloride. At BASF, methyl heptenone (37) is produced, for economic reasons, in the form of its double bond isomer (37 a) by thermal condensation of isobutylene, formaldehyde and acetone 37) (see page 13). By suitable choice of the reaction conditions, various side-reactions, such as the Cannizzarro reaction of formaldehyde, the oligomerization of isobutene and aldol condensation between formaldehyde and acetone, can largely be suppressed. 

The most important of the commercial cationic copolymers is butyl rubber prepared from isobutene and isoprene. Because of its very Ioav air permeability, butyl rubber finds extensive use in the inner tubes and protective clothing. It is manufactured by low-temperature (-100°C) copolymerization of about 97% isobutene and 3% isoprene in chlorocarbon solvents with AICI3 as initiator (see Table 8.5). More recently, an ozone-resistant copolymer of isobutylene and cy-clopentadiene has been marketed. 

H NMR spectrum, 817 in mixed Claisen condensation, 836 2-Methyl-2-propanol, 138. See also tert-Butyl alcohol acid-catalyzed dehydration, 182 2-Methylpropene. See also Isobutene Isobutylene... 

Interpenetrating elastomeric network Intumescent flame retardant Interpenetrating homopolymer network Elastomerie eopolymer from isobutene and isoprene (ANSI/ASTM, lUPAC) see also Butyl, GR-I, PlBl Poly(isobutylene) see also PIB Intermediate molecular weight Isophthalic acid... 

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