Tospearl™ 145FL is a 4.5-micron silicone resin for use as an anti-blocking agent in plastic films.
Momentive Tospearl™ 145FL is a 4.5-micron size, spherical, micro-fine silicone resin used as an additive in biaxially oriented polypropylene (BOPP) film materials as a slip and anti-blocking agent. As a slip agent, it improves the Coefficient of Friction (COF) to facilitate easier processing and faster line speeds and prevents the polymer film from tearing.
Momentive Tospearl™ 145FL, when used as an anti-blocking agent, prevents adhesion by creating lubricity during film production both on a finished roll and on the inside of the bubble. Additionally, Tospearl™ 145FL silicone resin materials offer low surface energy, creating a faster and more seamless film-extrusion process. Furthermore, the small differences between the refractive indices of Tospearl™ 145FL silicone bead additives and the polyolefin resin can help yield higher transparency and clarity with high gloss.
Color: White
Form: Microfine spherical beads
Average particle size: 4.5
Mean particle diameter (µm): 4.0-5.0
Weight loss @ 250°C and 0.5 hours, %: <1.0
pH²: 6.0-8.0
Bulk density: 0.43
Particle specific gravity: 1.32
Refractive index: 1.42
Uniform, spherical, and microfine particle size
High heat resistance
Low surface energy
Low refractive index
Non-migratory
Compounding capabilities
Lubricating properties for efficient film extrusion
High surface energy and refractive index of silicone resin additives
Uneven distribution due to particle size
Performance issues of slip and anti-block additives in the manufacturing of plastic and BOPP films
Anti-block masterbatch
Food packaging
Industrial clear films
BOPP Films
PET Films
Momentive's Tospearl™ resins allow for higher quality and less downtime at the converter and faster extrusion while manufacturing films. No need to worry about adhesion on the finished roll or the inside of the bubble.
Momentive Tospearl™ is a uniform spherical silicone resin that provides antiblock and slip performance capabilities for various plastic film applications.
TSR9000 from Momentive is an excellent solution for light diffusion and enhanced optical properties in polymers and resins formulations.
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