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Nanjing SiSiB Silicones Co., Ltd.
Nanjing SiSiB Silicones Co., Ltd.
SiSiB® SR8701
SiSiB® SR8701

SiSiB® SR8701 is a methyl silicone MQ resin dispersion with 50% active content in low-viscosity polydimethylsiloxane. This liquid resin offers excellent compatibility with various silicone systems, enhancing mechanical strength, surface hardness, and thermal stability.

SiSiB® SR8701

Effects


  • Easy incorporation

  • Solvent-free

  • Excellent thermal stability and film formation

  • Ensure uniform dispersion

  • Easy to dilute with organic solvents


Physical Properties


Appearance

Transparent viscous liquid

Color

Colorless or pale yellow

Viscosity (25°C) cSt

>10,000 (or be customized)

M/Q ratio

0.6-0.9

Volatiles (150 °C, 3h, %)

Max.1.0

These values are typical and are not intended for use as specifications.

Application


  • SiSiB® SR8701-50 is mainly used as a functional additive in release agent, defoamer, and silicone sealant formulations.


  • In release agents, the MQ resin forms a durable and heat-resistant silicone film on the mold surface, providing superior anti-adhesion, thermal stability, and mold cleanliness compared with conventional silicone oils. It effectively minimizes product sticking and build-up, extends mold life, and ensures a smooth surface finish in thermoplastic, rubber, polyurethane, and epoxy molding processes.


  • In defoamers, the incorporation of MQ resin enhances both foam-breaking efficiency and long-term foam suppression. The rigid MQ structure reinforces the silicone matrix, improving heat, shear, and chemical resistance, making it ideal for high-temperature, high-solids, and alkaline systems such as coatings, adhesives, and industrial chemical processes.


  • In silicone sealants, SiSiB® SR8701-50 acts as a resin modifier or reinforcing component, improving surface hardness, adhesion, gloss retention, and weather resistance. It enhances the cohesive strength and long-term durability of the cured sealant while maintaining excellent transparency and elasticity.

Packing and Storage


SiSiB® SR8701 is available in 20Kg plastic drum and 200Kg steel drum.


This document does not contain the product safety information required for safe use. Before handling, please refer to the product and safety data sheets, as well as container labels, for information on safe usage, physical hazards, and health risks. Safety Data Sheet is available on the website, from the distributor, or by contacting SiSiB customer service.

Documents

DownloadSiSiB® SR8701 Safety Data Sheet
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SiSiB® SR8701