Methyl ethyl ketone peroxide (MEKP) is primarily used as a catalyst in various applications, especially in the production of thermosetting resins like polyester and acrylic resins. Here are some specific uses of MEKP: Polyester Resin Cure Catalyst: MEKP is commonly used to initiate the curing process of polyester resins, which are used in fiberglass-reinforced plastics (FRP) and other composite materials. It acts as a free radical initiator in the polymerization process, converting liquid resin into a solid state. Acrylic Resin Cure Catalyst: Similar to polyester resins, MEKP can also initiate the curing of acrylic resins, which find applications in coatings, adhesives, and sealants. Vinyl Ester Resins: MEKP is used in the curing of vinyl ester resins, which are known for their superior mechanical properties compared to polyester resins. These resins are used in corrosion-resistant pipes, tanks, and other structures. Adhesives and Sealants: MEKP is sometimes used as a curing agent in adhesive and sealant formulations, particularly those based on unsaturated polyester or acrylic resins. Textile Printing: MEKP is used in some textile printing processes as a curing agent for certain types of inks. Medical Applications: In some specialized medical applications, MEKP is used as a free radical initiator in the production of biocompatible polymers. It's important to handle MEKP with care due to its potential hazards, as it is a strong oxidizer and can be explosive under certain conditions. Therefore, it is typically used in industrial settings where appropriate safety protocols can be enforced.