Paint Types – Identifying Duco Paints by Binder System In historical and trade usage, “Duco” paints are best classified as which of the following paint systems?

Introduction:
Trade names like “Duco” became synonymous with particular resin/solvent systems. Recognizing these helps match products to substrates and performance expectations. The question checks if you can map the brand-style term to the correct generic paint class.

Given Data / Assumptions:

• “Duco” historically refers to quick-drying automotive/industrial coatings.
• Binder system determines drying mechanism and film properties.
• We compare cellulose, emulsion, oil, and bituminous systems.

Concept / Approach:

“Duco” is widely associated with nitrocellulose lacquers (cellulose paints) that dry by rapid solvent evaporation and re-dissolve readily in suitable thinners for repair blending—features distinct from emulsion or oil paints.

Step-by-Step Solution:

Verification / Alternative check:

Automotive coating histories and material catalogs describe Duco as a nitrocellulose lacquer line, confirming the classification.

Why Other Options Are Wrong:

Plastic/emulsion paints are waterborne and behave differently; bituminous paints target corrosion/waterproofing; oil paints cure slowly by oxidation.

Common Pitfalls:

Assuming the term refers to any glossy quick-drying paint regardless of binder chemistry.

Final Answer:

Cellulose paints (nitrocellulose lacquers)