Name: MESIL® 107 Series OH Polymer
Brand: MESIL
Availability: InStock

Technical Parameter Matrix

Physical properties of MESIL® OH Polymer. All grades share a standard Refractive Index (25°C) of 1.401-1.403 and a Colorless clear liquid appearance.

Kinematic Viscosity (mm²/s)	Density (25℃, g/cm³)	Volatile (3h/150℃, %)	Primary Application Focus
750	0.98	< 1.5	Reactive diluent / Filler treatment
1,000	0.98	< 1.5	Structure control / Textile softener
2,000	0.98	< 1.5	Textile durable fabric softener
5,000	0.98	< 1.5	Textile durable fabric softener
10,000	0.98	< 1.5	Textile softener / Base polymer
20,000	0.98	< 1.5	RTV sealant base polymer
50,000	0.98	< 1.5	RTV sealant base polymer
80,000	0.98	< 1.5	High-performance RTV systems
300,000	0.98	< 2.0	Tackifiers / Insulating glass sealants
500,000	0.98	< 2.0	Pressure sensitive adhesives (PSA)
550,000	0.98	< 2.0	Pressure sensitive adhesives (PSA) matrix

Industrial Application Scenarios

Targeted solutions based on molecular weight and silanol functionality:

RTV Adhesives & Sealants: Formulates condensation cure one-part and two-part RTV systems. Polymers with molecular weights ranging from 15,000 to 150,000 are compounded with fillers to produce high-strength silicone sealants for insulating glass, construction, and household industries.

Rubber Compounding & Filler Treatment: Low viscosity silanol fluids (750 – 1000 cSt) act as critical anti-structuring additives and reactive diluents. They effectively treat filler surfaces, preventing the crepe hardening of silicone rubber during storage.

Textile Finishing: Intermediate viscosity grades (1,000 – 10,000 cSt) are emulsified and applied to textiles. The terminal silanol groups react to form a highly durable, wash-resistant fabric softening network.

Global Packaging & Logistics Constraints

Standard Packaging Formats: Delivered in 190 KG Drums, 200 KG Drums, and high-capacity 950 KG IBC Drums.

Container Loading Capacity (20′ GP): Maximum efficiency configurations: 80 standard drums (15.2 to 16 MT) OR 20 IBC drums (19 MT) per 20-foot General Purpose container.

Engineering FAQs (System Loop)

What is the crosslinking mechanism for one-part RTV systems using MESIL 107?

One-part systems crosslink via a two-stage condensation reaction. Initially, the silanol terminated polymer is compounded with fillers and reacted with an excess of moisture-sensitive multi-functional silanes. The silane displaces the silanol, creating a moisture-curable matrix.

Is the MESIL® 107 series a direct equivalent to industry standards?

Yes. Specific viscosity grades within the MESIL® 107 series serve as direct drop-in equivalents for Xiameter OHX-4081 and other standard hydroxy terminated polydimethylsiloxanes in sealant formulations.

How do I select between low and high viscosity grades?

Use low viscosities (750-1000 mm²/s) strictly as reactive diluents to adjust overall formulation viscosity or to treat fillers. Use intermediate viscosities (1,000-10,000) for textiles. Mandate high viscosities (20,000-550,000) as the primary base matrix for sealants, tackifiers, and pressure-sensitive adhesives.