Polymerization of ethylenically unsaturated monomers employing c

Details Polymerization of ethylenically unsaturated monomers employing c Polymerization of ethylenically unsaturated monomers employing c

1976-04-19

1977-12-13

Lilling, Herbert J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260862, 526204, 526208, 526209, 526211, 526214, 526215, 526344, C08F 400, C08F 404, C08F 1406

Patent

active

040630129

ABSTRACT:
New aliphatic azo compounds containing an .alpha.-hydroperoxy group and the alkali metal and alkaline earth metal salts thereof as represented by the general structure ##STR1## processes for preparing I where M is H and R is t-aliphatic by reacting t-aliphatic azo compounds having an .alpha.-halo substituent with about an equimolar amount of sodium or hydrogen peroxide; processes for converting I where M is H to its alkali or alkaline earth metal salt by reaction with aqueous solutions of the corresponding base or with calcium or sodium hydride; and the use of these novel compounds as polymerization initiators for vinyl monomers and as curing agents for resins. For example, 2-t-butylazo-2-hydroperoxy-4-methylpentane is prepared from sodium peroxide and 2-t-butylazo-2-chloro-4-methylpentane and used to polymerize vinyl chloride and to cure unsaturated polyester resin.

REFERENCES:
patent: 2599300 (1952-06-01), Upson
patent: 2605260 (1952-07-01), Johnson
patent: 3278304 (1966-10-01), Conix

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