polymerized 2,2,4-trimethyl-1 ,2-dihydroquinone

N,N’-Di-β-Naphthyl-p-phenylene-diamine

N-isopropyl-N’-phenyl-phenylenediamine  

N-(1 ,3-dimethyl-butyl)-N’-phenyl-p-phenylenediamine 

n-phenyl-1-napbthylamine

n-phenyl-2-naphthylamine

4,4-Diphenyl ethylene diphenylamine

2-Mercapto benzimidazole

styrenated phenol  

Polyhydroxy p-Phthalic zinc

RD(TMQ)

DNP 

4O1ONA(IPPD)

4020(6PPD)

A

D

DFC-34 

MB 

SP-C

998