N,N-Di-(hydroxy-phenyl) derivatives of piperazine and use thereo

Details N,N-Di-(hydroxy-phenyl) derivatives of piperazine and use thereo N,N-Di-(hydroxy-phenyl) derivatives of piperazine and use thereo

1980-05-09

1983-02-08

Kight, III, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 91, 524128, 524132, 524222, 524303, 524305, 524323, 524328, 524336, 524347, 524400, C07D24104, C08K 534

Patent

active

043730426

ABSTRACT:
New N,N'-di-(hydroxy-phenyl) derivatives of piperazine are disclosed. These new compounds are useful for stabilizing thermoplastic polymers, in particular polyolefins, against sunlight, heat and oxidation.
A process for producing the new compounds is also disclosed, as well as the polymeric compositions stabilized with said new compounds.

REFERENCES:
patent: 3435065 (1969-03-01), Dexter et al.
patent: 3584047 (1971-06-01), Dexter et al.
patent: 3681358 (1972-08-01), Kleiner
patent: 3787355 (1974-01-01), Linhart et al.
patent: 4070338 (1978-01-01), Rosenberger et al.
patent: 4230857 (1980-10-01), Drake et al.

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