Substitute aminopyrroles as stabilizers for chlorine-containing

Details Substitute aminopyrroles as stabilizers for chlorine-containing Substitute aminopyrroles as stabilizers for chlorine-containing

1990-03-19

1992-10-13

Morgan, Kriellion S.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524104, 524105, 544212, 548401, 548531, 548537, 548558, C08K 534, C07D20732

Patent

active

051551527

ABSTRACT:
The compounds of formula I ##STR1## wherein n is 1 or 2, R.sub.1 is C.sub.1 -C.sub.4 alkyl, R.sub.2 and R.sub.3 are, for example, alkanoyl or alkanoyloxy or R.sub.3 may also be, for example, alkanedioyl, are suitable for stabilizing chlorine-containing polymers against thermal and light-induced degradation.
Some of the compounds of formula I are novel.

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E. Toja, J. Hetero. Chem., 23, 1561 (1986).
J. R. Ross, J. Hetero. Chem. 22, 817 (1985).
S. M. Bayomi, J. Hetero. Chem. 22, 83 (1985).

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