P-vinyltoluenes

CO, CHi. CO2, ethylene, acetylene, ethane. H2O. propylene, ethanal acetone, propanal, ethanol, benzene, toluene, ethylbenzene, styrene, p-vinyltoluene, benzaldehyde, p-ethyl-totuene acetophenone, methyl benzoate, vinyl benzoate, ethyl benzoate, p-methyl-acetophenone. benzoic acid, p-methyl vinyl benzoate, p-vinylacetophenone, propyl benzoate, p-ethyl vinyl benzoate, p-vinyl vinyl benzoate, biphenyl. 1-hydroxyethyl benzoate, diacetylbenzene. p-acetyl vinyl benzoate, divinyl terephthalate. ethyl vinyl terephthalate. ethyl vinyl terephthalate, p-acetyibenzoic acid, methyl 1-hydroxyethyl terephthalate. ethylene dibenzoate... 

The application of ethylene in Heck reactions often shows different activities from other alkenes, because of Wacker-type side reactions. It was found, however, that iodo- and acceptor-substituted bromoarenes are cleanly converted in aqueous media to the corresponding styrenes utilizing a palladium-TPPMS complex [13], Furthermore, high purity o- and p-vinyltoluenes were prepared on a large scale (in... 

Ethenyl-4-methylbenzene HSDB 6503 4-Methylstyrene 1-Methyl-4-vinylbenzene p-Methyl styrene para-Methylstyrene Styrene, p-methyl- 1-p-Tolylethene p-Vinyltoluene 4-Vinyltoluene. Liquid mp = -34,1" bp = 172.8 = 0.9173 Xm = 210, 216, 251, 284, 294... 

A new method of synthesizing p-vinyltoluene (p-methylstyrene) is based on the reaction between toluene and acetaldehyde, whereby p-methylstyrene can be produced in over 90% yield at high conversion rates from the intermediate product 1,1-ditolylethane (DTE). 

This test method will detect the following impurities non-aromatic hydrocarbons containing ten carbons or less, ethylbenzene, p- and m-xylene, cumene, o-xylene, n-propylbenzene, m- and p-ethyltoluene, alpha-methyl-styrene, m- and p-vinyltoluene and others where specific impurity standards are available. Absolute purity cannot be determined if unknown impurities are present. 

Bagchi, P., and Birnbaum, S.M. (1981) Effect of pH on the adsorption of immunoglobulin G on anionic poly(vinyltoluene) model latex particles./. Colloid Interface Sci. 83, 460 178. 

Note Normally inhibited with 8-12 ppm 4-7er7-butylcatechol to prevent polymerization. According to Chevron Phillips Company (March 2002), 99.93% styrene contains the following components (ppm) benzene (<1), toluene (<1), ethylbenzene (50), a-meth ylstyrene (175), m + p-xylene (120), o-xylene (125), isopropylbenzene (100), / -propylbenzene (60), m + p-ethyltoluene (20), vinyltoluene (10), phenylacetylene (50), m + p-divinylbenzene (<10), o-divinylbenzene (<5), aldehydes as benzaldehyde (15), and peroxides as benzoyl-peroxides (5). 

Despite the fact that aryl bromides are generally less reactive, o- and p-bromotoluenes could be efficiently vinylated with ethene in DMF/H2O with [Pd(OAc)2] + P(o-tolyl)3 as catalyst and Et3N as base [16]. With careful choice of reaction parameters (90 °C and 6 bar of ethene) all bromotoluene was converted to high purity ortho- or para-vinyltoluene. Under the conditions used, the reaction mixture forms two phases. In this case the main role of water is probably the dissolution of triethylamine hydrobromide which otherwise precipitates from a purely organic reaction medium and causes mechanical problems with stirring. 

Savolainen H, Pfaffli P Neurochemical effects of short-term inhalation exposure to vinyltoluene vapor. Arch Environ Contam Toxicol 10 511-517, 1981... 

Beilstein Handbook Reference) ar-Methylstyrene Benzene, ethenylmethyl- BRN 1209317 CCRIS 2369 EINECS 246-562-2 Ethenylmethylbenzene HSDB 1035 Methylethenylbenzene Methylstyrene Methylvinylbenzene NCI-C56406 NSC 4832 Styrene, ar-methyl- Styrene, methyl- Styrene, methyl- (mixed isomers) a,p-Styrene Toluene, vinyl- (mixed isomers) Tolylethylene UN2618 Vinyl toluene 3- and i-Vinyl toluene (mixed isomers) Vinyl toluene Vinyitoluene Vinylloluene, industrial Vinyltoluenes, inhibited. 

Fig. 6.1. Gas chromatogram of a mixture of hydrocarbons. Stationary phase (A) 15% water on Chromosorb P (B) 25% aqueous solution of 3.5 Af AgNO, and 0.05 Af HgfNO,), onChromosorb P (C) 50% aqueous solution of 5.0Af AgNO, and 0.05 Af Hg(NOj)2 on Chromosorb P. Compounds (A) 1 = methane 2 = methylcyclohexene 3 = nonane 4 = benzene 5 = toluene 6 = decane 7 = p-xylene 8 = o-xylene 9 = undecane 10 = vinyltoluene (B) 1 = methane 2 = nonane 3 = decane 4 = benzene 5 = toluene 6 = p-xylene 7 = undecane 8 = o-xylene (C) 1 = methane 2 = decane 3 = undecane 4 = dodecane 5 = benzene. Reprinted with permission from ref. 45.

Fig. 8. Thermogravimetric analysis of polymers and copolymers of styrene in nitrogen at 10°C/min A represents PS B, poly(vinyltoluene) C, poly(a-methylstyrene) D, p oly (s tyrene- co- acryl o nit rile), with 71.5% styrene E, poly(styrene- o-butadiene), with 80% styrene and F,...

Toluene, vinyl- (mixed isomers). See Vinyltoluene monomer a-Toluenol. See Benzyl alcohol ar-Toluenol. See Cresylic acid p-Toluidine, N,N-dimethyl-. See N,N-Dimethyl-p-toluldine Toluol. See Toluene... 

Vinyltoluene n. H2C=CHC6H4CH3. A colorless liquid, the commercial forms comprising a 60 40 mixture of the m- and p-isomers, used as a solvent and as a polymerizable monomer in place of styrene in the production of polyester resins See image). 

Styrenated alkyds produced by the copolymerization of the medium-oil alkyd (60) and styrene, vinyltoluene, or para-methylslyrene (40) in the presence of p-tert-butyl perbenzoate are harder than the unreacted alkyd. The coatings obtained from the graft copolymer are harder, more solvent resistant, and more ductile than coatings obtained from blends with similar ratios of polymers. 

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