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Flyadd® VA7 is a sulfur donor for natural and synthetic rubbers. This product can be used in EV and sime-EV type cure systems as a complete or partial replacement for sulfur, thiuram, and DTDM sulfur donors. It can be used with most typical rubber accelerators and sulfur and is especially good for curing rubber that contains chlorine, such as chlorobutyl and polychloroprene. When used as a partial replacement for sulfur, it tends to improve the dispersion of other additives in the rubber.

Chemical Name: Poly-tert-butylphenoldisulfide

CAS Number: 60303-68-6

Compatible Polymers & Resins: Chlorobutyl Rubber, Chloroprene Rubber (CR)

Functions: Curing Agent

Synonyms: 4-(1,1-Dimethylethyl)phenol polymer with sulfur chloride, Sulfur Chloride Polymer With 4-(1,1-Dimethylethyl)Phenol

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Plastics & Elastomers Functions
CAS No.
60303-68-6
EC No.
620-523-3
Technologies

Applications & Uses

Compatible Polymers & Resins

Properties

Physical Form
Appearance
Yellow to light brown particles
Specifications
ValueUnitsTest Method / Conditions
Viscosity (150°C)approx. 1100cP
Flash Point263°C
Softening Point95 - 115°C
Bulk Density0.805g/cm³
Sulfur Content29.5 - 31.5%
Water1
Ethanol1.5 - 2
Toluene60
Acetone3 - 4
N-HExansmin. 01g/mol