Addition polymer

Addition polymers are a type of polymer that are formed through a process called addition polymerization, in which monomers (small, reactive molecules) are joined together without the loss of any small molecules (such as water or gas). This process typically involves unsaturated monomers, which contain double bonds (e.g., alkenes). In addition polymerization, the double bonds in the monomers open up and link together to form long chains, resulting in the formation of high molecular weight polymers.