Poly-tert-Butylphenoldisulfide CAS NO.60303-68-6

Chemical Name: Poly-tert-Butylphenoldisulfide

CAS No.:60303-68-6

Molecular formula:(C₁₀H₁₄O)_x▪(Cl₂S₂)y

Appearance:Yellow to reddish granules

Sulfur content,%:29.5-31.5

Softening Point,℃:95-115

TB7 is the sulfur donor for natural and synthetic rubbers. Itproduces ahigh percentage of mono-sulfidic crosslinks that results in vulcanizates with superior aging characteristics.Itcan be used as either complete or partial replacements for sulfur and thiuram and DTDM sulfur donors in EV and semi-EV type cure systems. In tires TB7 serials are used in the innerliner, chafer, bead apex, sidewalls, and tread.

Polymers: Natural rubber and synthetic elastomers. Especially good in curing rubber that contains chlorine such as chlorobutyl and polychloroprene.

Synergism:It can be used with most typical rubber accelerators and sulfur. Whenit isused as a partial replacement for sulfur, TB7 tends to improve dispersion of other additives in the rubber.

Crosslink Type: TB7 promotes mono-sulfidic crosslinks resulting in vulcanizates with excellent heat and aging resistance.

Non-nitrosamine: TB7 does not produce nitrosamines like many of the other sulfur donors such as DTDM and the thiurams. info at hhochem. com