Question

Which of the following statements are true with respect to surface paint?

• A. Paint is glossy when Pigment Volume Concentration is high
• B. Vehicle is the volatile part of the paint
• C. Base of the paint is usually oxides of metals
• D. High VOC content is preferred in paints

Hint:

Vehicle in paint is the liquid part that evaporates, leaving behind the pigment. Paint bases are often made of metal oxides to ensure durability.

Answer 1

The Correct Option is B, C

In surface paint, there are different components that make up the final product:
- (A) Pigment Volume Concentration (PVC): The statement is incorrect because paints are usually less glossy when PVC is high. High PVC makes the paint thicker, which reduces glossiness.
- (B) Vehicle: The vehicle in paint is the liquid part that evaporates after application, leaving the pigment and other components behind. The vehicle is volatile and typically consists of solvents or oils, so this statement is correct.
- (C) Base of the paint: The base of the paint often consists of metal oxides, especially in industrial paints and primers. These bases provide durability and adhesion, making the statement correct.
- (D) High VOC content: Volatile Organic Compounds (VOCs) are harmful and are not preferred in paints. Low VOC content is increasingly sought after due to environmental and health concerns. Therefore, this statement is incorrect.
Thus, the correct answers are (B) Vehicle is the volatile part of the paint and (C) Base of the paint is usually oxides of metals.
Final Answer: (B) Vehicle is the volatile part of the paint, (C) Base of the paint is usually oxides of metals