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Nitrosamine-free vulcanizing agent; ultra-fast curing speed;

Chemical Name: Poly-tert-butylphenol disulfide;
4-(1,1-Dimethylethyl)phenol polymer with sulfur chloride

CAS Number:  60303-68-6

Structure:

Formula: (C₁₀H₁₄O)_x.(Cl₂S₂)_y

Specification:

Appearance: Yellow to light brown beads

Sulfur content: 29.5-31.5%

Softening point : 95-115℃)

Applications:

Uses: Sulfur donor for natural and synthetic rubbers. TB7 produces a high percentage of mono-sulfidic crosslinks that results in vulcanizates with superior aging characteristics. TB7 can 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: Can be used with most typical rubber accelerators and sulfur. When used 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.

Handling & Safety:  It should be handled with care and prevent contamination of the environment.
For more detailed information, please refer to the material safety data sheet.

Packing:  The following packages are available upon customer’s request:
(1) 25KG net paper bag inner lined with PE bag.
(2) 900KG net super sacks.

Transportation: It is not dangerous material according to the transportation regulations.

Storage: It should be stored under suitable conditions (dry & cool).
Maximum recommended storage time from the date of analysis: 12 months.