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US 4,007,165 AGranted
Unsymmetrical tertiary-aliphatic azoalkanes
AssigneePennwalt Corporation
InventorsRonald Edward MacLeay, Chester Stephen Sheppard
Life of this patent
Estimating the term…
Abstract
Unsymmetrical azo compounds (R").sub.3 C--N=N--R' where (R").sub.3 C-- is tert.-aliphatic and R' is --C(R.sub.1)(R.sub.2)(Z) or ##STR1## e.g., 1-t-butylazo-1-chlorocyclohexane, their use as vinyl polymerization initiators and polyester resin curing agents, and methods for preparing same from t-aliphatic hydrazones and t-aliphatic .alpha.-halo-substituted azoalkanes.
Claims20
A compound of the formula (R").sub.3 C--N=N--R' in which (R").sub.3 C-- is different from -R' and wherein:
- a. R' is --C(R.sub.1) (R.sub.2) (Z) or ##STR120## b. R" is alkyl of 1-13 carbons, phenalkyl of 7-12 carbons or phenyl, not more than one R" being phenyl;
- c. R.sub.1 and R.sub.2 are alkyl of 1-13 carbons, phenalkyl of 7-12 carbons, cycloalkyl of 3-12 carbons or, taken together, alkylene of 2-16 carbons, and R.sub.2 can also be phenyl;
- d. R.sub.3 and R.sub.4 are hydrogen, alkyl of 1-13 carbons, cycloalkyl of 3-12 carbons or, taken together, alkylene of 2-16 carbons;
- e. R.sub.5 is alkyl of 1-13 carbons, cycloalkyl of 3-12 carbons or aryl of 6-14 carbons;
- f. R.sub.6 is alkyl of 1-13 carbons;
- g. R.sub.7 and R.sub.8 are hydrogen or alkyl of 1-13 carbons;
- h. R.sub.6 and R.sub.7 together can form alkylene of 2-16 carbons;
- i. Z is --Cl, --Br, --OR.sub.5, --N.sub.3, --SCN, --OCN, --OH, --NHR.sub.5, --R.sub.5, --NHNHR.sub.5, --OC(=O)OR.sub.5, --OC(=O)OOR, ##STR121## j. R is (R").sub.3 C.
5 more elements
A compound of the formula (R").sub.3 C--N=N--R' in which (R").sub.3 C-- is different from --R' and wherein:
- a. R' is --C(R.sub.1) (R.sub.2) (Z) or ##STR122## b. R" is alkyl of 1-13 carbons, phenyl, benzyl or phenethyl, not more than one R" being phenyl;
- c. R.sub.1 and R.sub.2 are alkyl of 1-13 carbons, cycloalkyl of 3-6 carbons or, taken together, alkylene of 2-16 carbons, and R.sub.2 can also be phenyl;
- d. R.sub.3 and R.sub.4 are hydrogen, alkyl of 1-4 carbons, cycloalkyl of 3-6 carbons, or together can form alkylene of 2-16 carbons;
- e. R.sub.5 is alkyl of 1-13 carbons, cycloalkyl of 3-6 carbons or phenyl;
- f. R.sub.6 is alkyl of 1-13 carbons;
- g. R.sub.7 and R.sub.8 are hydrogen or alkyl of 1-13 carbons;
- h. R.sub.6 and R.sub.7 together can form alkylene of 2-16 carbons;
- and
- i. Z is --Cl, --Br, --OR.sub.5, --N.sub.3, --SCN, --OCN, --OH, --HNR.sub.5, --R.sub.5, --NHNHR.sub.5, --OC(=O)H, --OC(=O)R.sub.5, --0C(=O)OR.sub.5, ##STR123##
6 more elements
Dependencies are inferred from the claim text.