Ethanolamine → HCID 86644225, compound

Participants

Reaction Steps

A 2/1 molar ratio of 1,2-dihydrodicyclopentadiene (DHDCPD) to 2-norbornene was used as follows to prepare the first DHDCPD/2-norbornene/1-hexene copolymer of example 1. 500 ml dry toluene cosolvent, 23.1 ml of a 2-norbornene solution (89.2 wt.% in toluene), 55.4 ml DHDCPD, 9 ml of the 1-hexene solution, and 6 ml of the diethylaluminum iodide solution were charged to a dry, nitrogen-purged quart bottle. 7.5 ml of the MoCl5 solution was charged last with shaking. Polymerization occurred rapidly, and after 1 hour the reaction was shortstopped using a mixture of 1 ml ethanolamine, 3 ml Solution A, and 6 ml of an antioxidant solution (0.1 g/ml of Ethyl 330 in toluene; Ethyl 330 is 1,3,5-trimethyl-2,4,6-tris[3,5-di-t-butyl-2-hydroxybenzyl]benzene). The polymer cement was washed twice with 2 liters of water per wash. Each water wash was discarded. An additional 6 ml of the antioxidant solution was added to the washed cement, which then was coagulated using excess Solution A in a Waring blender. A solid, ring-opened DHDCPD/2-norbornene/1-hexene copolymer was recovered by filtering and vacuum drying and found to have a DSV (as defined heretofore) of about 1.41.

Provenance & Evidence