Vinyl caproate

Vinyl caproate, caprylate, pelargonate, caprate, myristate, pahnitate, stearate, 10-hendecenoate (undecylenate) and oleate can be prepared in a similar manner, except that in the preparation of the pahnitate and stearate the fatty acids are added to a solution of mercuric acetate and sulfuric acid in vinyl acetate. Vinyl stearate is not redistilled, but the once-distilled product is recrystallized from acetone at 0° (3 ml. of acetone per gram of vinyl stearate). The amount of mercuric acetate employed was 2%, and the amount of 100% sulfuric acid was 0.3-0.4%, of the weight of the stearic acid. Average yields and properties of these vinyl esters are given in the table. 

H. Hopff and N. Balint developed a copolymerization process for tetrachloroethylene with ethylene. Radiation-induced chlorination of polyisobutylene is the subject of the chapter of C. Schneider and P. Lopour. M. Litt, V. T. Stannett, and E. Vanzo show that the polymerization of vinyl caproate follows the kinetics of styrene. 

We can tentatively conclude, therefore, that the effect of chain transfer is still making itself felt in the polymerization of vinyl caproate in spite of its low water solubility. Except at the lowest particle concentrations, chain transfer is important. The polymerization in these regions is midway betwen Case I and Case II. When variables are considered separately, there is some dependence of polymerization rate on particle concentration, and also some dependence on initiator concentration. In addition, at constant organic volume, while the rate of polymerization increases as the particle concentration increases (Rp oc 2V- ), the rate per particle decreases as the particles get smaller. This shows that transferred radicals are mainly trapped in the particles, but some diffuse out and can undergo termination with other growing radicals. 

Vinyl caproate in emulsion polymerization behaves like styrene in most respects. The rate is first order in monomer. In the range of 1015 to 10"16 particles/cc, it depends on Np to the 0.75 power. This is higher than that for styrene in this range, Rp oc Np°5, indicating that there is less diffusion into the aqueous phase for vinyl caproate. However, the mechanism of particle formation for vinyl caproate may not fit the Smith-Ewart mechanism because of the high chain transfer rate to monomer. 

Veratraldehyde, 31, 58 33, 65 Veratraldehyde, 6-nitro-, 33, 65 Veratrole, 36, 47 Veratrole, 4-iodo-, 36, 46 Vinyl acetate, 30, 106 Vinyl bromide, 39, 10 Vinyl capra te, 30,108 Vinyl caproate, 30,108 Vinyl caprylate, 30,108 Vinyl 10-hendecenoate, 30,108 Vinyl laurate, 30,106 Vinylmagnesium bromide, 39, 10 Vinyl myristate, 30,108 Vinyl oleate, 30,108 Vinyl palmitate, 30,108 Vinyl pelargonate, 30,108 Vinyl stearate, 30,108 2-Vinylthiophene, 38, 86 Vinyl undecylenate, 30,108... 

Okamura and Motoyama [132] showed that the emulsion polymerization of vinyl caproate, a monomer of low water-solubility, followed the same pattern as styrene did as far as the Smith-Ewart theory is concerned. 

Poly(vinyl benzoate) Poly(vinyl butyrate) Poly(vinyl caproate) Poly(vinyl 4-chlorobenzoate)... 

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