Process of bulk polymerization of styrene using azoalkane mixtur

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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5253333, 525376, 525910, 525912, 5262181, 5262192, 526346, 526347, 5263472, 528396, 534573, 534587, 534838, 534886, 502167, C08F 404, C08F 1208, C07C10702

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048310964

ABSTRACT:
Mixtures of azolakanes of varying thermal stabilities at least one of which is an unsymmetrical azoalkane (R--N.dbd.N--R'), are prepared by reacting 4 equivalents of a mixture of two or more primary alkyl, cycloalkyl or aralkylamines with 1 equivalent of sulfuryl chloride in an inert solvent and oxidizing the resulting mixture of sulfamide products with basic bleach. The unsymmetrical azoalkanes can be separated from the symmetrical azoalkanes by a variety of conventional techniques. The azoalkane mixtures are excellent polymerization initiators for vinyl monomers and curing agents for unsaturated polyester resins.

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Engel et al., J. Am. Chem. Soc., vol. 97, pp. 6754 to 6762 (1975).
Ohme et al. Chemical Abstracts, vol. 63, 5515i d (1965).
Spialter et al., J. Org. Chem., vol. 30, pp. 3278 to 3283 (1965).
Ohme et al. Justus Liebigs Ann. Chem., vol. 713, pp. 74-86, (1968).
Overberger et al., J. Amer. Chem. Soc., vol. 80, pp. 6562-6568 (1958).
Timberlake et al., J. Org. Chem., vol. 41, pp. 1666-1667 (1968).

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