Summary for best leveling agent Discussion
Best leveling agent for anti-corrosion waterbased coating is the core question here: Mohammad Danesh of Tehran says his 3-component water-based anti-corrosion coating is dip-spun and baked at 320 °C, but the polyether modified polysiloxane copolymer leveling agent he uses cuts salt spray performance from about 700 hours to 150 hours. He asks for a substitute that will not hurt corrosion resistance. The excerpt provided contains only the question and does not include any answers, so no specific replacement product or formulation advice is given in the thread text shown. The key issue is the tradeoff between flow/leveling and corrosion protection, and the request is for a leveling agent that preserves the coating’s anti-corrosion properties under the stated process conditions.
Q. We are producing a water-based anti-corrosion coating. This coating consists of 3 components that are mixed in a certain ratio before applying the coating. This coating is applied by dip-spin method and then baking at 320 °C. We use polyether modified polysiloxane copolymer as the leveling agent. But this leveling agent reduces the salt spray from 700 hours to about 150 hours.
I’m looking for the best substitution that doesn’t affect the anti-corrosion properties. Thank you
mohammad danesh
– tehran, Iran
December 14, 2019