Why It Matters
Coupling silica filler into the rubber network in silica-filled tire tread for low rolling resistance and high wet grip using sulfide/mercapto silanes, supported by the sulfur cure system
Solution Approach
Coupling silica filler into the rubber network in silica-filled tire tread for low rolling resistance and high wet grip using sulfide/mercapto silanes, supported by the sulfur cure system RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.
Typical Treatment Workflow
1
System Assessment
Characterize operating conditions—fluid composition, temperature, pressure, flow rates—and benchmark current treatment performance.
2
Chemistry Selection
Match base chemicals to your operating envelope. Factor in compatibility with existing programs, regulatory constraints, and downstream impacts.
3
Dosage & Delivery
Determine optimal treat rates through jar testing or field trials. Configure packaging (drums, totes, ISO tanks) to match consumption and storage logistics.
4
Monitoring & Adjustment
Track KPIs—coupon rates, residuals, separator performance, water quality. Adjust chemistry and dosage as conditions change.
Recommended Chemistries (6)
Bis-(3-triethoxysilylpropyl)-tetrasulfide (Si-69 / TESPT)
CAS 40372-72-3
Silicone Fluids & Oils
Tetrasulfide silane for tires
Ethoxysilyl ends bond silica silanols while the tetrasulfide bridge reacts into the polymer during vulcanization, chemically linking filler to rubber to lower hysteresis (rolling resistance)
Physical Description: Liquid; Liquid, Other Solid; Other Solid; Dry P…
Full Details
Bis--disulfide (Si-75 / TESPD)
CAS 56706-10-6
Silicone Fluids & Oils
Disulfide silane for green tires
Disulfide analogue with fewer labile sulfurs for better scorch safety and processing control in green-tire silica compounds
Physical Description: Other Solid; Liquid; Pellets or Large Crystals,…
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Mercaptopropyltrimethoxysilane (MPTMS)
CAS 4420-74-0
Silanes & Organosilanes
Mercapto silane for rubber
High-activity mercapto coupling agent; the thiol bonds efficiently into the rubber network for strong silica-polymer coupling
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Zinc Oxide
CAS 1314-13-2
Mineral Fillers & Pigments
Vulcanization activator
3077 (ZINC OXIDE, CRUDE) · Class Cure activator that forms the zinc-accelerator complex driving efficient sulfur crosslinking of the compound
Melting Point: 1975 °C Density: 5.61 Solubility: 0.0004 % at 18 °C
Full Details
Stearic Acid
CAS 57-11-4
Acids & Salts
Processing aid and activator
Co-activator that solubilizes ZnO into active zinc soaps and aids filler dispersion/processing
Melting Point: 69 °C Boiling Point: 383 °C at 760 mmHg Density: 0.86 at 20 °C
Full Details
2-Mercaptobenzothiazole (MBT)
CAS 149-30-4
Specialty Additives
Thiazole accelerator
2811 (2-MERCAPTOBENZOTHIAZOLE) · Class Thiazole accelerator that speeds and controls the sulfur vulcanization the silane couples into
Melting Point: 177–181 °C Boiling Point: Decomposes Density: 1.42 at 20 °C
Full Details
Related Product Families
● Available
Sulfide & Mercapto Silanes
Sulfur-functional silanes for silica-rubber coupling in tire and rubber compounds
CouplingVulcanization
3 chemistries
View family
● Sourcing-only
Rubber Vulcanization Chemicals
Accelerators, activators, and processing aids for sulfur-cure rubber compounding
CrosslinkingProcessing
3 chemistries
View family