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US 4,228,069 AGranted
Azoxy compound having use in a process for preparing foamed structures
AssigneePennwalt Corporation
InventorRonald E. MacLeay
Life of this patent
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Abstract
An acid sensitive, mono- or di- azoxy compound is reacted with an acidulous acidic polymerizable medium to form a cellular polymeric structure. An unsymmetrical azoxy compound is also provided having the formula ##STR1## where n is 1 or 2 and R.sup.8 is movalent when n is 1 and divalent when n is 2.
Claims4
A compound having the formula ##STR23## wherein (a) n is 1 or 2
- (b) R.sup.1 is selected from alkyl of 1 to 6 carbons or cycloalkyl of 3 to 12 carbons;
- (c) R.sup.2 is selected from R.sup.1 and aryl of 6 to 10 carbons;
- (d) R.sup.1 and R.sup.2 when joined together to form an alkylene of 3 to 11 carbons;
- (e) (Ra).sub.3 C-- is selected from tertiary-alkyl of 4 to 8 carbons, tertiary cycloalkyl of 6 to 11 carbons or tertiary aralkyl of 9 to 12 carbons;
- (f) when n is 1, R.sup.8 is selected from ##STR24## --CN, --OAc, or --OR.sup.4 where R.sup.4 is methyl, ethyl, propyl, isopropyl, or phenyl;
- (g) when n is 2, R.sup.8 is selected from --O--, ##STR25## (h) R.sup.7 is a divalent radical selected from alkylene of 1 to 10 carbons, cycloalkylene of 3 to 6 carbons or phenylene.
3 more elements
Dependencies are inferred from the claim text.