Name: Silicone Intermediate Resin SI-100 (MQ-type)
Brand: Coatingsink
SKU: silicone-resin-intermediate-si100
Availability: InStock

Question 1

What does 'MQ-type' mean for silicone resins?

Accepted Answer

MQ silicone resins are built from monofunctional (M: R3SiO1/2) and tetrafunctional (Q: SiO4/2) siloxane units. The M/Q ratio controls properties: high M/Q gives softer, tackier materials used in PSA systems; lower M/Q gives harder films for release coatings and heat-resistant coatings. SI-100 is formulated for balanced hardness and release performance.

Question 2

How is SI-100 cured in coating applications?

Accepted Answer

SI-100 can be cured by condensation of residual Si-OH groups with moisture (ambient cure) or by addition of a metal catalyst (e.g., tin, titanium, or platinum complex) for faster or lower-temperature cure. For bake-cure systems (150–200°C), SI-100 can be crosslinked without catalyst. The Si-OH content of 2–5% provides adequate crosslink density for hard, durable films.

Density	1.05 g/ml
Tg (film)	40–60°C
Si-OH Content	2–5%
Solid Content	60±2% (in toluene)
Viscosity (25°C, solution)	50–100 mPa·s

Silicone Intermediate Resin SI-100 (MQ-type)

Specifications

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