… preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for …
Explanatory notes
… preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti‑corrosive preparations and other … acids. (g) Foam inhibitors , usually based on silicones. Those lubricating preparations … This group includes : (a) Pour‑point depressants , similar to those used for lubricants as in 3 (b) above. …