Chemistry plays a pivotal role in the recycling of plastics by enabling the breakdown of complex polymer structures into useful monomers or other valuable chemical intermediates. The chapter delves into the chemical processes involved in plastic recycling, focusing on various techniques for polymer degradation and conversion. Mechanisms such as depolymerization, pyrolysis, and chemical dissolution will be explored to find ways for complex degradation and transformation methods. The chapter will highlight the efficacy of different methods adopted in breaking down plastics into smaller, more manageable components. Additionally, the role of catalysts and solvents in facilitating these reactions is discussed, emphasizing their importance in enhancing reaction rates and selectivity. The chapter will also touch upon recent advancements in chemical recycling technologies, including the development of novel catalysts and solvent systems for more efficient and sustainable plastic recycling. By harnessing the power of chemistry, plastic recycling efforts can mitigate environmental pollution, conserve resources, and promote a circular economy. However, challenges such as scalability, cost-effectiveness, and environmental impact must be addressed to realize the full potential of chemical recycling in the plastic waste management paradigm. Key mechanisms such as depolymerization, pyrolysis, and chemical dissolution will be discussed and explored, showcasing their effectiveness in disassembling plastics into smaller, more manageable units. These methods hold promise in tackling the challenge of plastic waste by converting discarded materials into useful resources. Central to these processes are catalysts and solvents, which play crucial roles in facilitating reactions, enhancing reaction rates, and ensuring selectivity. Catalysts, in particular, act as agents to accelerate chemical reactions without undergoing any permanent changes themselves. Meanwhile, solvents provide a medium for reactions to occur and aid in the dissolution of polymer materials, contributing to the efficiency of recycling processes. Through continued research and innovation, chemical recycling technologies hold the potential to transform the way we manage plastic waste and create a more sustainable future.