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Pentylene

All lation. The combination of olefins with paraffins to form higher isoparaffins is termed alkylation (qv). Alkylate is a desirable blendstock because it has a relatively high octane number and serves to dilute the total aromatics content. Reduction of the olefins ia gasoline blendstocks by alkylation also reduces tail pipe emissions. In refinery practice, butylenes are routinely alkylated by reaction with isobutane to produce isobutane—octane (26). In some plants, propylene and/or pentylenes (amylenes) are also alkylated (27). [Pg.207]

Alkylate is composed of a mixture of isoparaffins whose octane numbers vary with the olefins from which they were made. Butylenes produce the highest octane numbers, propylene the lowest, and amylenes (pentylenes) the iatermediate values. AH alkylates, however, have high (>87) octane numbers that make them particularly valuable. [Pg.207]

Electroshock Pentylene tetrazol Clonic-tonic seizures Absence seizures ... [Pg.329]

Synonyms BRN 1731096 EINECS 211-720-1 Isobutylethylene l-lsopropyl-2-methylethene 1-Isopropyl-2-methylethylene 4-Methyl-l-amylene 4-Methyl-l-pentylene NSC 15091 UN 1993. [Pg.794]

Synonyms Amylene a-/3-Amylene BRN 1731269 EINECS 203-694-5 Pent-l-ene 1-Pentylene Propylethylene, UN 1108. [Pg.935]

Methyl-2-pentene-2-one, see Mesityl oxide 4-Methyl-2-pentyl acetate, see sec-Hexyl acetate 4-Methyl-l-pentylene, see 4-Methyl-l-pentene Methyl pentyl ketone, see 2-Heptanone Methylpentylmethylene, see Methylcyclopentane a-Methylphenanthrene, see 1-Methylphenanthrene... [Pg.1495]

As shown in Table II, the alkylation of propylene and pentylenes results in higher acid consumptions and lower product octanes than butylene alkylation. Because of these penalties, only butylenes were alkylated for many years. However, the rapidly increasing demand for alkylate as a motor gasoline component has forced refiners to include propylene and, to a lesser extent, pentylenes in their alkylation feeds. [Pg.145]

Considerable effort has been put into minimizing the adverse effects of these olefins. It was found that alkylating propylene and pentylenes in a mixture with butylenes promoted the desired reactions and reduced the octane and acid consumption penalties. Furthermore, by optimizing temperature, isobutane-to-olefin ratio, acid strength, and other variables, the deleterious effects of propylene and pentylenes in the feed can be minimized (4, 8, 21). The decision as to how much of these olefins to include in the alkylation unit feed depends on many different factors, such as their value relative to alkylate, butylene and isobutane avails, alkylate volume and octane requirements, acid costs, etc. [Pg.146]

In a cooperation project20 with Professor H. Timmerman, Dr. R. Leurs and coworkers (Vrije Universiteit Amsterdam), we compared the effects of the higher homologues of histamine (i.e. replacement of the ethylene side chain by n-propylene, n-butylene, n-pentylene etc.) in mouse brain cortex slices and in guinea-pig jejunum. [Pg.15]

Analytical Properties Resolution of enantiomers such as trans- 1,3-cyclohexene dibenzoate, 3,5-pentylene dibenzoate, 3,5-dichlorobenzoate, triacetylacetonates, and racemic compounds having phosphorus as a chiral center this phase will also resolve achiral compounds Reference 45, 46... [Pg.162]

Polymethylene pentylene (PMP) is, again, a polyolefin, but with a much higher melting point than the other ones (240 °C). Despite its crystalline nature PMP can be well transparent. It is used a.o. in laboratory bottles. One of its trade names is TPX . [Pg.18]

Gallo, R., Viglizzo, G., Vecchio, F., and Parodi, A., Allergic contact dermatitis from pentylene glycol in an emollient cream, with possible co-sensitization to resveratrol, Contact Dermatitis, 48, 176, 2003. [Pg.521]

To further examine the relationship between blood Mn concentration and seizure frequency, Papavasiliou and Miller (8) injected mice with 5 Mn at various times before and after inducing a seizure by either maximal electroshock or pentylene tetrazole injection. [Pg.106]

Consequently, they tested their reactivation activity on tetraethylpyrophosphate-inhibited mouse brain cholinesterases. Their activities were compared with pralidoxime. All the compounds (except that with pentylene bridge) were found to be more effective reactivators than pralidoxime. Bispyridinium monooximes with a 3-carbamoyl group were... [Pg.1004]

Problem 5.1 Neglecting enantiomerism, draw structures of (a) the six isomeric pentylenes (C5H10) (b) the four chloropropylenes (C3H5CI) (c) the eleven chlorobutylenes (C4H7CI). Specify as Z or E each geometric isomer. [Pg.151]

Common names are seldom used except for three simple alkenes ethylene, propylene, and isobutylene. The various alkenes of a given carbon number are, however, sometimes referred to collectively as the pentylenes amylenes), hexylenes, heptylenes, and so on. (One sometimes encounters the naming of alkenes as derivatives of ethylene as, for example, tetramethylethylene for (CH3)20—C(CH3)2.) Most alkenes are named by the lUPAC system. [Pg.151]

ProMem 5J Referring to your answer to Problem 5.1 (p. ISl), give lUPAC names for (a) the isomeric pentylenes (b) the isomeric chloropropenes. [Pg.152]

Olefins (ethylene, propylene, butylenes, and pentylenes) that occur in refinery (process) gas have specific characteristics and require specific testing protocols (ASTM D-5234, ASTM D-5273, ASTM D-5274). [Pg.81]


See other pages where Pentylene is mentioned: [Pg.159]    [Pg.210]    [Pg.224]    [Pg.434]    [Pg.359]    [Pg.439]    [Pg.439]    [Pg.737]    [Pg.252]    [Pg.97]    [Pg.1504]    [Pg.160]    [Pg.187]    [Pg.253]    [Pg.224]    [Pg.103]    [Pg.245]    [Pg.141]    [Pg.17]    [Pg.26]    [Pg.517]    [Pg.517]    [Pg.338]    [Pg.224]    [Pg.245]    [Pg.80]    [Pg.1830]    [Pg.600]    [Pg.143]   
See also in sourсe #XX -- [ Pg.55 ]




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Pentylenes

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