Disclosed are a polymer having a narrow molecular weight distribution prepared by living radical and a polymer manufacturing method comprising a step of performing living radical polymerization using 0.005 to 0.5 parts by mass of an oxygen radical scavenger per 100 parts by mass of a radical polymerizable monomer.

Disclosed are a polymer having a narrow molecular weight distribution prepared by living radical and a polymer manufacturing method comprising a step of performing living radical polymerization using 0.005 to 0.5 parts by mass of an oxygen radical scavenger per 100 parts by mass of a radical polymerizable monomer.

Provide is a polymer having a narrow molecular weight distribution by living radical polymerization.

A polymer manufacturing method comprising a step of performing living radical polymerization using 0.005 to 0.5 parts by mass of an oxygen radical scavenger per 100 parts by mass of a radical polymerizable monomer.

In an example, a process includes polymerizing a mixture that includes an ethylene monomer, a propylene monomer, and a diene monomer to form an ethylene-propylene-diene (EPDM) terpolymer using ring-opening metathesis polymerization (ROMP). The process further includes chemically reacting the EPDM terpolymer with a norbornene-based phosphinate cross-linking material to form a flame-retardant, cross-linked EPDM rubber.

In an example, a process includes polymerizing a mixture that includes an ethylene monomer, a propylene monomer, and a diene monomer to form an ethylene-propylene-diene (EPDM) terpolymer using ring-opening metathesis polymerization (ROMP). The process further includes chemically reacting the EPDM terpolymer with a norbornene-based phosphinate cross-linking material to form a flame-retardant, cross-linked EPDM rubber.

In an example, a process includes polymerizing a mixture that includes an ethylene monomer, a propylene monomer, and a diene monomer to form an ethylene-propylene-diene (EPDM) terpolymer using ring-opening metathesis polymerization (ROMP). The process further includes chemically reacting the EPDM terpolymer with a norbornene-based phosphinate cross-linking material to form a flame-retardant, cross-linked EPDM rubber.

In an example, a process includes polymerizing a mixture that includes an ethylene monomer, a propylene monomer, and a diene monomer to form an ethylene-propylene-diene (EPDM) terpolymer using ring-opening metathesis polymerization (ROMP). The process further includes chemically reacting the EPDM terpolymer with a norbornene-based phosphinate cross-linking material to form a flame-retardant, cross-linked EPDM rubber.

In an example, a process includes polymerizing a mixture that includes an ethylene monomer, a propylene monomer, and a diene monomer to form an ethylene-propylene-diene (EPDM) terpolymer using ring-opening metathesis polymerization (ROMP). The process further includes chemically reacting the EPDM terpolymer with a norbornene-based phosphinate cross-linking material to form a flame-retardant, cross-linked EPDM rubber.