Abstract
Diphenylamine antioxidant CAPOX 445, 4, 4'-Bis (alpha, alpha-dimethylbenzyl) diphenylamine (CAS No. 10081-67-1), is a highly effective non-discoloring aromatic amine type antioxidant finding utility as a thermal stabilizer in a wide variety of applications, including polyolefins, styrenics, polyols, hot melt adhesives, lubricants and polyamides. Excellent performance at processing temperatures, and strong synergy with other types of antioxidants such as phenolics and phosphites, makes CAPOX 445 an excellent choice as a component of your thermal stabilizer package.

Identification
Name: 4, 4'-Bis (alpha, alpha-dimethylbenzyl) diphenylamine
Synonyms  : Bis[4-(2-phenyl-2-propyl)phenyl]amine
4-(1-Methyl-1-phenylethyl)-N-[4-(1-methyl-1-phenylethyl)phenyl]aniline; 4-(1-Methyl-1-phenylethyl)-N-[4-(1-methyl-1-phenylethyl)phenyl]benzenamine
CAS Registry Number: 10081-67-1
EINECS: 233-215-5

Equivalents
Chemtura (formerly Crompton-Uniroyal Chemical) Naugard 445  
OuchiShinko Nocrac CD

Properties
Appearance: White to off white powder
Specific gravity: 1.14
Melting Point: 98~102 C degree
Thermal Loss (65 C): ¡Ü0.1 %
Ash (800 C): ¡Ü0.3 %

Application
Diphenylamine antioxidant CAPOX 445, 4, 4'-Bis (alpha, alpha-dimethylbenzyl) diphenylamine (CAS No. 10081-67-1), is especially effective in polyisoprene, Neoprene, nitrile, EPDM, HNBR and acrylic rubbers. The combination of high amine antioxidant activity, good color and low volatility makes it an ideal antioxidant and heat stabilizer for rubber and plastics.
Another advantage of CAPOX 445 is very slightly staining and discoloring in sunlight with its relatively non-discoloring during heat aging.