Disulfide Silane Coupling Agent Crosile® 75 for Tyre Rubber Industry

Crosile® 75 (Bis(3-triethoxysilylpropyl)disulfide) TESPD is a Disulfide Silane Coupling Agent, polysulfidic organosilane and has been widely in the rubber industry. Crosile® 75 Silane coupling agent is used to improve the reinforcing capability of fillers with silanol group on their surface,and also as an integral part of curing systems to improve cross-linking network properties.

Item NO.:
Crosile® 75
Chemical Name:
Bis(3-triethoxysilylpropyl)disulfane
Chemical Formula:
C18H42O6S4Si2
CAS No.:
56706-10-6
EINECS No:
260-350-7
Properties:
Crosile®75 is a pale-yellow clear liquid with light odor of ethyl alcohol and soluble easily in ethyl alcohol, acetone, benzene, toluene etc. It is unsoluble in water.

Inquire Now

Disulfide Silane Coupling Agent Crosile® 75 for Tyre Rubber Industry

Chemical Name

Bis [3-(triethoxysilyl)propyl] disulfide

CAS NO.

56706-10-6

Formula

(C2H5O)3SiCH2CH2CH2-S2-CH2CH2CH2Si(OC2H5)3

Formula Structure

Properties

Crosile® 75 (TESPD) is a bifunctional sulfur-containing organosilane widely used in the rubber industry. It improves the reinforcing efficiency of fillers containing silanol groups on their surfaces and also participates in the vulcanization system, contributing to the development of an effective crosslinking network.

Compared with Crosile® 69 (Bis(3-triethoxysilylpropyl) Tetrasulfide, TESPT), Crosile® 75 exhibits higher thermal stability, allowing higher processing and mixing temperatures.

Crosile® 75 can improve tensile strength, modulus, abrasion resistance, and compression set while contributing to enhanced dynamic performance of rubber compounds.

Synonyms

BIS(TRIETHOXYSILYLPROPYL)DISULFIDE, Bis(3-triethoxysilylpropyl)disulfane, BIS[3-(TRIETHOXYSILYL) PROPYL]-DISULFIDE, Bis[3-(triethoxysilyl)propyl] persulfide, 3,3′-Bis-(triethoxysilylpropyl) disulfide, Bis[3-(triethoxysilyl)propyl] perdisulfide, bis[γ-(triethoxysilyl-propyl]-disulfide,Bis-(γ-triethoxysilylpropyl)-disulfide

Specifications

Properties	Units	Target Values (Spec,Limits)
Alcohol content	%(wt)	≤0.5%
γ2 Content	%(wt)	≤3.0%
Other impurity content	%(wt)	≤1.0%
Viscosity 25°C (cps)	Cps	≤14.0
Sulfur Content	%(wt)	15.0 ± 1.0
S2 content	%(wt）	80-90
S4-S8 content	%(wt)	10.00%
The average sulfur chain		2.20±0.15
Other Impurity Content	%(wt)	Max 4.0
Specific Gravity (25°C)	g/cm3	1.080 ± 0.020
Refractive Index (25°C)		1.480 ± 0.020

Application

Crosile® 75 is a multifunctional silane coupling agent that has been successfully used in the rubber industry. It is designed to improve the physical and mechanical properties of vulcanizates. It can significantly improve tensile strength, tear strength, and abrasion resistance while reducing compression set. In addition, it helps lower compound viscosity and improve the processability of rubber compounds.
Crosile® 75 is particularly suitable for enhancing the reinforcing efficiency of fillers containing hydroxyl groups in unsaturated elastomers and their blends. Silica, talc, mica, clay, and other mineral fillers can be used in combination with Crosile® 75 in polymers such as NR, IR, SBR, BR, NBR, and EPDM.

Recommend dosage 1.0-4.0 PHR

Related Tags :