Silane coupling agent Si69

Product Overview

Description

Silane Coupling Agent Si69 

CAS No. : 40372-72-3

 

Chemical name: Bis-(γ-triethoxysilylpropyl)-tetrasulfide

Structural formula: (C₂H₅O)₃Si(CH₂)₃-S-S-S-S-(CH₂)₃Si(OC₂H₅)₃ 

Molecular formula: C₁₈H₄₂O₆Si₂S₄  

Molecular weight: 538.96

 

Corresponding grades around the world:

KH-8454 (Chinese Academy of Sciences, China); Si-69 (Degussa, German);

Z-6940 (Dow Corning, US); A-1289 (Compton, US); Y- 6194 (United Carbide, US);

KBE-846 (Shin-Etsu, Japan) 

Item	Indicators
Appearance	Yellow transparent liquid
Density (20°C), g/cm3	1.080±0.020
Sulfur content, %	21.7-23.3
Impurities before, %     ≤	1.0
Et OH content, %       ≤	0.5
γ2, %                 ≤	3.0

 

Character and Application:

The product is a multifunctional silane coupling agent which has been applied successfully in the rubber industry. It can be used to increase rubber’s “wetting” ability to fillers, to improve the reinforcing effect of fillers, and to reduce the rolling resistance. Thus the mechanical properties, as well as compression heat, wear and permanent deformation performance of vulcanizate can be ameliorated significantly. By using Si69, the adverse effects of fillers on curing rate and crosslinking degree can be eliminated and the mooney viscosity of rubber compound can be reduced, as a result, the manufacturing process can be improved significantly. Meanwhile, the cure reversion phenomenon, to some extent, can also be relieved.

The product is suitable for the polymers containing double bond (eg. NR, NBR, SBR, IR, BR, EPDM, or their combination) or for the rubber formulation containing fillers with hydroxy functional groups (eg. white carbon, silicate, etc.).

 

Packaging & Storage:

Packaging: 200 kg net iron drum or 1000 kg net IBC drum.

Storage:Storing in cool, dry place with good ventilation, far away from moisture, water and fire source. 

 

If you are interested, please feel free to contact me! 

 

Henan Kingway Chemcials Co.,Ltd.

Tel:+86-371-65336570