Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1979-11-06
1981-09-22
Sneed, Helen M. S.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C07C10700
Patent
active
042909457
ABSTRACT:
Novel compounds according to the present invention, i.e. derivatives of .alpha.,.omega.-bis-alkyl esters of isobutyric acid having the formula: ##STR1## A method for preparing the above-specified novel compounds consists in reacting .alpha.,.alpha.'-azo-bis-isobutyric acid dinitrile and a saturated alkyl monohydric alcohol derivative of the formula ROH, wherein R: ##STR2## with gaseous hydrogen chloride in an organic solvent medium in the presence of 0.5-5% by mass of a water-soluble ether at a temperature within the range of from -5.degree. to +6.degree. C., followed by treating the resulting reaction mixture with water at a temperature of from 0.degree. to -5.degree. C. and isolation of the desired product.
The novel compounds according to the present invention are useful as initiators for a radical-type polymerization of ethylenically unsaturated compounds, as well as the starting products for the manufacture of reactive polymers by a simplified process.
REFERENCES:
patent: 3830797 (1974-08-01), MacLeay et al.
patent: 4051124 (1977-09-01), Moore
patent: 4055714 (1977-10-01), Sheppard et al.
patent: 4075199 (1978-02-01), MacLeay et al.
patent: 4088642 (1978-05-01), Sheppard et al.
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patent: 4101522 (1978-07-01), Sheppard et al.
Barantsevich Evgeny N.
Demidova Valentina A.
Fionov Vladimir I.
Ivanchev Sergei S.
Polozov Boris V.
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