Shin-Etsu KM-742T is a non-ionic, water-based silicone emulsion formulated as a high-efficiency mold release agent and surface treatment additive. Because KM742T contains a small amount of solvent (xylene), it has an excellent effect on the wettability of metal molds and is also effective in removing dust and dirt attached to metal molds. When solvents adhere to plastics, the surface is often damaged. In this case,  KM742T can be used.

• Surface Smoothness - KM-742T forms a consistent low-friction film that minimizes adhesion between molded parts and metal surfaces. Laboratory tests show a reduction of release force by over 60% compared with conventional emulsions. This smooth release performance prevents part deformation and allows faster demolding cycles. The silicone coating remains uniform even after repeated molding, maintaining excellent separation over extended production runs.

  
  

• Heat Resistance - The formulation provides outstanding thermal stability under continuous operation. Thermal oxidation testing at 200°C for 72 hours revealed less than 5% change in viscosity and no residue formation on mold surfaces. This enables KM-742T to retain lubricity and effectiveness in high-temperature molding environments, ensuring consistent release behavior across long-term cycles.

  
  

• Cold Durability - KM-742T exhibits excellent cold endurance, maintaining liquid uniformity and release efficiency at temperatures down to -65°C. Rheological evaluation confirms no phase separation or solidification after prolonged storage under low-temperature conditions. This ensures reliable performance in cold-cast molding or environments requiring low-temperature processing.

  
  

• Wetting Ability - The emulsion demonstrates superior spreading and coverage characteristics. With a measured contact angle of less than 25° on steel substrates, KM-742T ensures even distribution and uniform film thickness. This enhances mold surface protection, preventing sticking and improving product finish consistency. Effective wetting also allows reduced application quantity, optimizing consumption and cost efficiency.

  
  

• Chemical Stability - KM-742T maintains its composition integrity under various chemical and environmental conditions. Stability tests under pH range 5–9 and temperature variations between -20°C to 150°C confirmed no emulsion separation or degradation. It resists oxidation and does not react with commonly used mold materials, guaranteeing long-term product reliability and surface cleanliness.

• Rubber Molding - KM-742T is used as a release agent in rubber molding processes such as tire, gasket, and seal production. It ensures easy demolding without tearing or residue. Efficiency testing showed a 40% improvement in release rate and extended mold life, making it suitable for continuous vulcanization lines.

  
  

• Plastic Molding - The emulsion provides stable release performance in injection and compression molding of thermoplastics like ABS, PVC, and polycarbonate. It minimizes surface defects and ensures consistent gloss. Trials in ABS component production reported a 35% reduction in part rejection rates due to improved surface clarity.

  
  

• Packaging and Film Processing - KM-742T supports clean separation in film extrusion and packaging operations. The low-friction film prevents sticking during film winding and lamination. Testing demonstrated smoother film unwinding with reduced static adhesion, improving process efficiency.

  
  

• Cleaning and Coating - The formulation helps in cleaning metallic molds and forming a protective anti-stick layer. It effectively removes fine contaminants and creates a uniform surface layer resistant to further adhesion. Surface analysis confirmed a significant reduction in particulate contamination after application.

  
  

• Automotive Manufacturing - In die-casting and polymer component molding, KM-742T ensures precise release and surface uniformity under repetitive cycles. It maintains stable viscosity and reduces mold fouling, improving product precision. Testing in automotive trim production recorded longer mold service intervals and reduced maintenance frequency.

  
  

• Leather Processing - KM-742T can be applied to release and finishing stages in synthetic leather production. It provides a smooth and uniform release layer, improving texture consistency and minimizing surface marks. In durability testing, treated molds retained consistent release performance after over 1,000 cycles without degradation.