Methyl ethyl ketone (MEK) is a versatile solvent that is used in a wide range of industrial applications. Some of the major or common uses of MEK include:

1. Coatings and Paints: MEK is commonly used as a solvent in the production of coatings and paints. It is used to dissolve resins, polymers, and other ingredients to create a homogeneous solution that can be applied to various surfaces.
2. Adhesives and Sealants: MEK is used as a solvent in the production of adhesives and sealants. It can help to dissolve and mix the ingredients of the adhesive or sealant, making it easier to apply and providing better adhesion to the surfaces being bonded.
3. Printing Inks: MEK is a common solvent used in the production of printing inks for flexographic, gravure, and screen printing processes. It helps to dissolve the ink pigments and resins, allowing for better color saturation and adhesion to the substrate.
4. Chemical Intermediate: MEK can be used as a chemical intermediate in the production of other chemicals such as methyl isobutyl ketone (MIBK), which is used as a solvent in the production of resins, coatings, and inks.
5. Cleaning Agent: MEK is used as a cleaning agent for machinery, equipment, and surfaces in various industrial settings. It can help to remove oils, greases, and other contaminants.
6. Extraction Solvent: MEK is used as an extraction solvent in the pharmaceutical industry to extract active compounds from plant material.
7. Polymer Manufacturing: MEK is used in the manufacturing of various polymers such as acrylics, vinyls, and polystyrene.