The movement from solvent-based to waterborne adhe sives presents a special challenge to the formulator and coater. Films, silicone-release liners, and other low-energy surfaces are difficult to coat with water-based formulations and wetting agents are needed to produce the low surface tension required for good coverage without retraction. Existing wetting agents are available to provide good wet ting, but many of these surfactants must be used with high levels of defoamer to keep foam generation under control. Most defoamers cause cratering, fisheyes, and other coat ing problems which must be solved through the addition of more foam-producing wetting agent. Achieving the appropriate balance between wetting agent and defoamer is many times a long and difficult process; however, SURFYNOL® PSA336 Surfactant can solve this formulating dilemma by providing excellent dynamic wet ting with minimal foam generation.
• Pressure-sensitive adhesives (PSAs)
• Flexible food packaging adhesives
• Laminating adhesives
• Ease of addition with no gel formation
• Excellent reduction of equilibrium and dynamic surface tensions
• Excellent wetting of silicone release liners, plastic films, and other low energy surfaces
• Low foam generation
• Several FDA and other food contact compliances
• Ease of addition with no gel formation
