Catalyst for living radical polymerization and polymerization method

摘要

A nonmetallic compound having an ionic bond with a halide ion is used as a catalyst for living radical polymerization. Even if a radical initiator is not used, a monomer can be subjected to a radical polymerization to obtain a polymer having narrow molecular weight distribution. The cost of the living radical polymerization can be remarkably reduced, and it is made possible to prevent adverse effects of using a radical initiator (such as side reactions). The present invention is significantly more environmentally friendly and economically excellent than conventional living radical polymerization methods, due to advantages such as low toxicity of the catalyst, low amount of the catalyst necessary, high solubility of the catalyst, mild reaction conditions, and no coloration/no odor, etc. The catalyst can be applied to various monomers and enables synthesis of high molecular weight polymers.

主权项

1. A method of polymerization comprising a step of conducting a living radical polymerization,
wherein the living radical polymerization step is conducted in the presence of a catalyst, wherein the catalyst is a nonmetallic compound having an ionic bond with a halide ion, and a nonmetallic atom in the nonmetallic compound is in a cationic state and forms an ionic bond with a halide ion.