We recommend the lowest viscosity grades E330, E335, E400, A300, A400, and AM330 for high solids inks and lacquers where high gloss and build are more important than durability and high film strength. Low viscosity nitrocellulose can be used for formulating high solids coatings and printing inks. Highly pigmented coatings and inks can also be produced using low viscosity nitrocellulose. The low viscosity grades are used predominantly in printing inks or overprint varnish for plastic ﬁlms or aluminum foils in food packaging applications. They are also used in primers for wood coatings.
Film strength improves as the viscosity increases. The higher viscosity grades are typically used where durability and/or flexibility are required, such as in wood coatings, auto refinish paints and film coatings for cellophane. A500, E510, E560, E620, and AM500 probably represent the best compromise between good durability and solids content. The medium viscosity grades are the most frequently used grades and are used above all in printing inks for packaging (mainly A500), in wood lacquers and varnishes, automotive repair paints and nail varnishes.
Where more flexibility is needed, such as for leather lacquers, we recommend E840, E950, E1160, and A700. The high viscosity grades provide very ﬂexible and low-gauge ﬁlms. Applications include leather coatings, metal coatings (Zapon lacquers) and highly specialized uses such as the production of membrane ﬁlters. In many cases high viscosity nitrocellulose is used for improving the viscosity of coating systems.