Symmetric azo-bis-mercapto compounds

Details Symmetric azo-bis-mercapto compounds Symmetric azo-bis-mercapto compounds

1976-04-20

1977-11-22

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

44 62, 252 9, 252 496, 252 50, 252 56R, 260823, 260865, 260872, 260887, 260896, 260897R, 260898, 260899, 560147, C07C10702, C08L 6706, C10L 114

Patent

active

040595749

ABSTRACT:
Symmetric azo-bis-mercapto compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 are methyl or ethyl, R.sub.3 and R.sub.4 are the same or different alkylene having 1 to 4 carbon atoms, and n is 0 or 1, and a method for forming block copolymers of vinyl monomers in a two-step process employing such compounds as polymerization initiators.

REFERENCES:
patent: 3655391 (1972-04-01), Merli et al.

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