Crosile-965 Novel Monosulfide Silane for Rubber & Tires

Novel Monosulfide Silane Crosile®965

Crosile®965, an advanced monosulfide silane by Ecopower engineered to reduce tire rolling resistance, lower VOC emissions, and enhance rubber compounding efficiency.

Item NO.:
Crosile®965
Chemical Name:
Novel Monosulfide Silane
Properties:
Colorless to dark yellow liquid or milky white solid, flash point >170 °C, viscosity 40–100 mPa·s, refractive index (25 °C) 1.45–1.48, sulfur content 2.2–3.6%, heating loss ≤3.5%, and density (25 °C) 0.98–1.00

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Novel Monosulfide Silane Crosile-965

Advanced monosulfide silane for enhanced rubber compounding and reduced rolling resistance

Product Description

Crosile-965 is a novel monosulfide silane, mainly used to reduce tire rolling resistance while improving rubber compounding efficiency, lowering Mooney viscosity and enhancing the dispersion of reinforcing fillers.

Molecular Mechanism

Crosile-965 is an advanced product specially designed to enhance the chemical coupling between silica and rubber molecules.

Key Features

Novel Monosulfide Silane

Crosile-965 is a novel monosulfide silane, designed for advanced rubber compounding.

High Coupling Efficiency

In green-tire applications, offers a higher silane-polymer coupling efficiency than Crosile-69 (4S) and Crosile-75 (2S).

Low Volatility

Features a significant 80% reduction in volatiles, effectively lowering VOC emissions. This provides strong support for environmental protection and sustainability, in line with the stringent current requirements for reducing VOC emissions.

Excellent Dispersion

Lowers Mooney viscosity and enhances the dispersion of reinforcing fillers when used for one-step compounding.

Performance Improvement

Reduced Fuel Consumption: Reduces tire rolling resistance, and particularly at 60°C it significantly lowers the loss factor (tan δ), thereby markedly reducing fuel consumption.

Rebound Performance: Improves the rebound performance of the rubber compound.

Production Optimization: When used for one-step compounding, compounding efficiency is increased, which further optimizes the production process and contributes to the performance and sustainability of rubber products.

Technical Specifications

Test Item	Specification	Test Method
Appearance	Colorless to dark yellow liquid or milky white solid	Visual inspection
Flash point (°C)	>170	GB/T1671-2008
Viscosity (mPa·s)	40-100	GB/T 10247-2008
Refractive index (25°C)	1.45-1.48	GB/T 6488-2022
Sulfur content %	2.2-3.6	GB/T 30309-2013
Heating loss %	≤3.5%	GB/T-1699-2003
Density (25°C)	0.98-1.00	GB/T 4472-2011

Usage Guidelines

Application method: Add together with silica.
Recommended dosage: 10-12% of the silica, and can be adjusted according to product requirements.

Packaging & Storage

Packaging: 25 kg net in a plastic (PE) drum.
Storage: Keep sealed in a cool, ventilated, dry place.
Shelf Life: 12 months under normal storage conditions.
Handling note: A small amount of flocculent matter may appear under normal sealed storage and does not affect use. It is recommended to use up the whole contents at once after opening; if not, the open exposure time should not exceed 8 hours. Storage under high-humidity conditions (relative humidity not exceeding 80%) is strictly prohibited; otherwise hydrolysis may cause gelation and affect product performance.

Frequently Asked Questions

Q: How does Crosile-965 compare to conventional high-performance silanes?

A: Crosile-965 is engineered to offer superior or comparable coupling efficiency relative to standard high-performance alternatives used in green-tire applications. It serves as an effective drop-in replacement in typical SSBR/BR/NR matrices.

Q: What is the recommended dosage compared to other polysulfide silanes?

A: The recommended dosage is 8% – 12% based on silica content (phr), which aligns with industry standards for polysulfide silanes in tire tread applications.

Q: Does Crosile-965 require changes to my mixing process?

A: No major process modifications are required. For optimal silanization, maintain a non-productive mixing temperature of 140°C – 160°C, consistent with standard polysulfide silane processing.

Q: Is Crosile-965 suitable for electric vehicle tires?

A: Yes. Crosile-965 is specifically engineered to reduce hysteresis loss (tan δ @ 60°C), which directly contributes to extended EV range — a critical requirement for EV-optimized tread compounds.

Q: How can I request a sample or TDS?

A: Please contact our sales team at sales@ecopowerchem.com or submit a request via the contact form on our website. We typically respond within 24 hours.

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