Methyl Hydrogen Silicone Fluid

Basic Product Information

• Product Name: Methyl hydrogen siloxane
• Appearance: Colorless to pale yellow transparent oily liquid.

TYPICAL PROPERTIES

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Physical Properties

Low viscosity (50–500 cSt), high temperature resistance (-30°C to 200°C), and excellent spreadability.

Chemical Properties

Features reactive Si-H bond structures, capable of forming durable functional films on fiber surfaces through crosslinking reactions.

Certified by OEKO-TEX® Standard 100 and REACH, non-toxic and environmentally friendly.

Product Functions

• Waterproof and Antifouling: Provides durable water and oil repellency, easy to clean and maintain.
• Softening and Elasticizing: Significantly improves leather handfeel and enhances resilience.
• Abrasion Resistance Enhancement: Reduces surface wear and prolongs service life.
• Weather Resistance Protection: Resists UV aging and prevents discoloration and cracking.
• Breathability Retention: Non-clogging pores, maintaining natural breathability.

Applications

• Finished Leather: Shoe upper leather, apparel leather, luggage leather, furniture leather
• Special Leather: Automotive interior leather, medical leather, sports equipment leather
• Regenerated Leather: Surface treatment for PU/PVC synthetic leather, microfiber leather

Core Advantages

Market Value

Core Drivers of Market Value

Hydrogen-containing silicone oil demonstrates significant market value in the leather processing industry due to its excellent softness, hydrophobicity, thermal stability, and chemical modifiability, primarily reflected in:

• Performance Enhancement: Significantly improves leather softness, abrasion resistance, and water resistance to meet the demands of high-end leather products.
• Environmental Substitution: Replaces traditional fluorinated chemicals (such as PFAS), complying with global environmental regulations (e.g., EU REACH, China GB standards).
• Process Optimization: Simplifies processing workflows, reduces energy consumption, and enhances production efficiency.

Market Size and Growth Trends

• Global Market: The market size of hydrogen-containing silicone oil for leather processing was approximately $120–150 million in 2023, expected to reach $250–300 million by 2030 (CAGR of 10–12%).
• Regional Distribution:
• Asia-Pacific (China, India, Vietnam): Global leather manufacturing hubs, accounting for over 60% of the market.
• Europe: Dominated by high-end leather demand, with environmental regulations driving the penetration of silicone-based products.

Competitive Advantages

• Performance: More resistant to high temperatures and less prone to yellowing compared to traditional oils and fats.
• Environmental Friendliness: Free of PFOA/PFOS, certified by Bluesign® and other standards.
• Economy: Combined use with wax emulsions and other agents can reduce overall costs through synergy.

Future Growth Points

• Green Leather Trend: Global brands (e.g., Nike, Gucci) are promoting fluorine-free alternatives, making hydrogen-containing silicone oil the preferred substitute.
• Functional Demand: Modified silicone oils with antibacterial, self-cleaning, and other properties (e.g., silver ion-loaded types) have significant potential.
• Emerging Markets: The upgrading of the leather industry in Southeast Asia (e.g., Vietnam) will drive imports of high-end additives.

Experimental Data & Case Studies

High-End Shoe Upper Leather Applications

Test Data:

Dynamic Water Resistance: 84 hours (untreated leather: 8 hours)

Flex Resistance: 100,000 cycles without cracking (ASTM D2097)

Success Case:

Adopted by an international sports brand for football shoe series, achieving a 30% price premium.

Automotive Interior Leather Treatment

Key Metrics:

Abrasion Resistance: 50,000 cycles with color fastness grade 4-5

VOC Emissions: <50 μg/m³ (far below industry standards)

Representative Client:

A global Top 3 automotive seat supplier (TS16949 certified).

Luxury Handbag Leather Finishing

Handfeel Rating: 6.5 (conventional treatment) vs. 9.2 (hydrogen-containing silicone oil treatment)

Water Resistance Grade: Grade 3 (conventional) vs. Grade 5 (silicone oil treatment)

Maintenance Cycle: 2 months (conventional) vs. 6 months (silicone oil treatment)

Preparation Methods, Core Technologies & Precautions

Preparation Methods

• Hydrolysis-Polycondensation Method (Mainstream Process)

Raw Materials: Co-hydrolysis of methyl hydrogen dichlorosilane (MeHSiCl₂) and dimethyldichlorosilane (Me₂SiCl₂)

Process Characteristics:

Toluene/water two-phase system, temperature controlled at 40–60°C

Acid catalyst (sulfuric acid) dosage: 0.5–1.5%

Molecular weight adjustment via hydrolysis time control (4–8h)

• Siloxane Equilibration Method (High-End Products)

Raw Materials: D4 (octamethylcyclotetrasiloxane) and DH4 (methyl hydrogen cyclotetrasiloxane)

Process Optimization:

Using tetramethylammonium hydroxide (TMAH) as catalyst

Reaction temperature: 80–100°C

Vacuum dehydration (<100Pa)

Modified Processes (Functional Products):

Epoxy Modification: Introducing epoxy groups to enhance bonding with leather fibers

Amino Modification: Enhancing antibacterial properties

Polyether Modification: Improving water solubility for water-based leather coatings

Core Technical Breakthroughs

• Low-Yellowing Technology

Nitrogen protection process applied

Antioxidant (BHT) added at 0.1–0.3%

Si-H content controlled at 0.5–1.0%

Narrow molecular weight distribution control

• Multi-Stage Molecular Sieve Separation Technology

Supercritical CO₂ extraction and purification

PDI (polydispersity index) controlled at 1.05–1.15

• Low-Temperature Crosslinking Technology

Development of platinum catalyst system

Crosslinking temperature reduced to 80–100°C (traditional: 120–150°C)

Suitable for heat-sensitive leather

• Micro-Emulsification Technology

HLB value regulated at 8–10

Particle size controlled <100nm

Stability >6 months

Precautions

• Avoid mixing with strong acid/alkali additives
• Recommended pH control range: 5–7
• Storage temperature: 5–35°C, shelf life: 12 months

Packaging & Ordering

Packaging: 200kg/1000kg plastic drums (customizable).