Which one of the following is used as a binder in paints ?
Titanium dioxide
Novolac
Phthalocyanine
Silicones
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC NDA-1 – 2019
Novolac is used as a binder in paints.
In paint formulation, a binder (also known as the vehicle) is the component that forms a film to hold the pigment particles together and adhere them to the surface being painted. Titanium dioxide and Phthalocyanine are examples of pigments, which provide color and opacity. Silicones are polymers that can be used in paints, often as additives for properties like water repellency or flexibility, or as binders in specialized coatings, but Novolac (a type of phenolic resin) is a well-established binder, particularly used in durable coatings like primers, can coatings, and industrial finishes due to its excellent chemical resistance and hardness.