Bis 3-Triethoxysilylpropyl tetrasulfide

Manuf./Distrib. Power Chem. http //www. powerchemical. net Bis-(3-(triethoxysilyl) propyl) tetrasulfane CAS 40372-72-3 EINECS/ELINCS 254-896-5 Synonyms Bis (3-triethoxysilylpropyl) tetrasulfide... 

The hydrophilic nature of silica also affects the cure characteristics of rubber compounds, the properties of vulcanized rubber and also the compatibility with non-polar rubber such as natural rubber (NR). Silica retards the vulcanization as it reacts with zinc-accelerator-sulfur complex. These drawbacks can be overcome through the use of silane coupling agents. The most common silane coupling agent used is bis(3-triethoxysilylpropyl) tetrasulfide (TESPT). A silane... 

Furthermore Li et al. reported the use of a novel method (Two-Step Method, TSM) to investigate the modification process in preparation of rubber, silica, and bis(3-triethoxysilylpropyl) tetrasulfide (TESPT). The TSM modification indicated that the TESPT hydrolyzed firstly to generate the silanol (Si-OBT), and the silanol reacted with the hydroxyl groups on the surface of siUca. The properties of modified silica were studied and results exhibited the advantages of TSM, and also revealed that 8 % TESPT amount was suitable than 12 and 15 % TESPT amount [120]. 

Flame retardant lane/3-chloropropyl triethoxysi-lane/bis (3-triethoxysilylpropyl) tetrasulfide functionalized S1O2 and low-sulfur vulcanization NaA-dimethyl methylphosphonate/ [19]... 

Zeng, Z., Ren, W., Xu, C., Lu, W., Zhang, Y., and Zhang, Y. (2009) Effect of bis(3-triethoxysilylpropyl) tetrasulfide on the crosslink structure interfacial adhesion, and mechanical properties of natural rubber/cotton fiber composites. J. Appl. Polym. Sci., Ill, 437-443. 

S. Wolff Crosslinking of Rubber Compounds with Bis-(3-triethoxysilylpropyl)-tetrasulfide International Rubber Conference (IRC), San Francisco, October (1976)... 

Jaroniec and coworkers were able to incorporate (up to 30mol%) tris[3-(trimethoxysilyl)-propyl]isocyanurate (ICS) (18) into mesoporous silica phases by co-condensation with TEOS.179,180 They also tested multifunctional hybrid materials based on ICS as potential Hg2+ adsorbents by direct co-condensation of ternary mixtures comprising TEOS (70 to 88 mol%), ICS, and another organosilane, namely bis[3-(triethoxysilyl)propyl]tetrasulfide, A-(3-triethoxysilylpropyl)-4,5-dihydroimi-dazole, or ureidopropyltrimethoxysilane.181 Ternary systems comprising TEOS, ICS, and MPTES, which showed a high adsorption capacity for Hg2+, were also reported (for PMOs based on ICS, see Section 3.4.3).182... 

A.M. Cabral, W. Trabelsi, R. Serra, M.P. Montemor, M.L. Zheludkevich, M.G.S. Ferreira, The corrosion resistance of hot dip galvanized steel and AA2024-T3 pre-treated with bis-[triethoxysilylpropyl] tetrasulfide solutions doped with Ce(N03)3, Corros. Sci. 48 (2006) 3740-3758. 

In here, at least one Y is hydrolyzable group, and X is a functional group such as iodine, sulfur, thiocyanate, thiourea, cyanide, etc., which is called bifunctional silane. When X is a hydrogen, it is called monofunctional silane. Two moles of 3-chloropropyltrialkoxysilanes react with one mole of disodium tetrasulphide produces bis-type bifimctional silane, which is called bis(triethoxysilylpropyl)tetrasulfide (TESPT) [171,172]. 

SVET results obtained on the substrates pre-treated with the 1x10" M cerium nitrate doped bis-[triethoxysilylpropyl] tetrasulfide (BTESPT) silane solutions 8 hours after defect formation (A) and 2 days after defect formation (B). Results were obtained during immersion in 0.005 M NaCI. Scan size was 1 x1 mm. From Ref. 64. 

---