Macromolecular antioxidants based on sterically hindered phenols and phosphites
A sterically hindered phenol and phosphite based compound represented by the following formula: and its use as an antioxidant in a wide range of materials including, but not limited to, food, plastics, elastomers, composites and petroleum based products is disclosed herein.
1. A method of synthesizing a macromonomer represented by the following structural formula:
comprising the step of mixing
pyridine, and PCl 3
in a solvent under conditions that cause at least partial formation of the macromonomer.
2. The method of claim 1 , wherein the solvent includes THF.
3. The method of claim 1 , wherein the solvent includes dichloromethane.
4. The method of claim 1 , wherein the mixing occurs at a temperature in a range of between about 5° C. and about −5° C.
5. The method of claim 1 , wherein the mixing occurs at a temperature of about 0° C.