Ethanolamine → 5-Methyl-2-Norbornene 1-Hexene

Participants

Reaction Steps

A 1/1 molar ratio of dihydrodicyclopentadiene (DHDCPD) to 5-methyl-2-norbornene was used as follows to prepare the DHDCPD/5-methyl-2-norbornene/1-hexene copolymer of example 2. 2500 ml dry toluene cosolvent, 207.5 ml DHDCPD, 182.5 ml 5-methyl-2-norbornene, 45 ml of the 1-hexene solution, and 30 ml of the diethylaluminum iodide solution were charged to a gallon bottle. 37.5 ml of the MoCl5 solution was charged last with shaking. After 1.5 hours the reaction was shortstopped using a mixture of 5 ml ethanolamine, 15 ml Solution A, and 60 ml of an antioxidant solution (0.1 g/ml of 2,2'-methylenebis-[4-methyl-6-t-butylphenol] in toluene). The polymer was coagulated in several batches using excess Solution A in a Waring blender. About 350 grams of a solid, ring-opened DHDCPD/5-methyl-2-norbornene/1-hexene copolymer was recovered after filtration and vacuum drying. The copolymer was found to have a DSV of about 1.04.

Provenance & Evidence