Poly-tert-Butylphenoldisulfide CAS NO.60303-68-6, brought to you by Guangzhou Chengshuai New Material Co Ltd, is a versatile chemical compound originating from China. TB7, with model number TB7, falls under the category of chemicals.

This sulfur donor, in the form of yellow to reddish granules, boasts a sulfur content ranging from 29.5% to 31.5% and a softening point of 95-115 degrees Celsius.

TB7 plays a vital role as a sulfur donor for both natural and synthetic rubbers, resulting in vulcanizates with exceptional aging characteristics.

It can effectively replace or complement sulfur, thiuram, and DTDM sulfur donors in EV and semi-EV type cure systems, especially in tire manufacturing, where it finds application in the innerliner, chafer, bead apex, sidewalls, and tread. This product excels in curing rubber containing chlorine, such as chlorobutyl and polychloroprene.

In synergy with most rubber accelerators and sulfur, TB7 enhances the dispersion of other additives in the rubber. Its unique property of promoting mono-sulfidic crosslinks leads to vulcanizates with outstanding heat and aging resistance.

Unlike some other sulfur donors, TB7, including DTDM and the thiurams, does not produce nitrosamines, making it a safer choice for various applications.