Polydimethylsiloxane

Polydimethylsiloxane (CAS 9016-00-6), commonly known as PDMS, is a silicone-based polymer used as a defoamer, lubricant, and surface modifier.

Where is Polydimethylsiloxane used?

• Coatings and sealants: surface flow control, leveling, and crater prevention in solvent-borne and waterborne systems
• Automotive and aerospace: mold release agent and component lubricant that reduces friction in assemblies
• Personal care: slip, spreadability, and non-greasy skin feel in skin creams, hair conditioners, and antiperspirants
• Plastics processing: internal or external lubricant and plasticizer that improves mold release and reduces surface defects
• It also serves as a base material and functional additive where conventional organics fall short.

Commercial specifications

• Viscosity grades range from low to ultra-high
• Emulsion and compound forms for waterborne applications