poly-tert-butylphenol disulfide Poly-alkyl phenol disulfide VA-TB7
Vulcanizing agent, sulfur donor for natural and synthetic rubbers. Especially good in curing chlorobutyl and polychlorprene.
Company Profile:
Company Name: AURORA CHEMICAL CO., LTD.
Year Established: 1997
The world’s leading manufacturer and supplier of Xanthan Gum, Oil Driling Chemicals, Drilling Fluid Additives, Rubber Plastic Additives and Cosmetic Ingredients.
Product specification:
Alkylphenol Disulfide
Trade Name:VA-TB7
Arkema Vultac TB7 equivalent
CAS NO.:60303-68-6
Synonyms:Poly-alkyl phenol disulfide; Para-alkyl phenol Disulfide Polymer;Alkylphenol Disulfide;disulfide alkyl phenol;Poly-tert-butylphenol disulfide;4-(1,1-Dimethylethyl)phenol polymer with sulfur chloride;Alkylphenol disulfide polymer sulfur donor;
Structure Formula:(C10H14O)x.(Cl2S2)y
Item |
Specification |
Appearance |
Yellow to light brown pastilles |
Sulfur content, % |
29.5~31.5% |
Softening point (℃) |
95~115 |
Properties and Usage:
Uses: Sulfur donor for natural and synthetic rubbers. VA-TB7 produces a high percentage of mono-sulfidic crosslinks that results in vulcanizates with superior aging characteristics. VA-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 VA 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, VA tends to improve dispersion of other additives in the rubber.
Crosslink Type: VA promotes mono-sulfidic crosslinks resulting in vulcanizates with excellent heat and aging resistance.
Non-nitrosamine: VA does not produce nitrosamines like many of the other sulfur donors such as DTDM and the thiurams.
Packing:
25kgs/kraft bag;
25kgs/paper drum;
900kgs/big bag
Or as customer's request
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