Trifluoromethanesulfonic acid → Fluoren-1-amine

Participants

Reaction Steps

An adhesive of the present invention was made by mixing together 25 parts of PKHS, a phenoxy resin from the Union Carbide Corporation, 52 parts of Quatrex 1010, a diglycidyl ether of bisphenol A epoxy resin from the Dow Chemical Company, and 23 parts of 9,9-bis(3-methyl-4-aminophenyl)fluorene (hereinafter BAFOT). These three constituents were stirred to a uniform paste, using methyl ether ketone (MEK) as a solvent for the solution of the phenoxy and epoxy resins, followed by blending in the relatively insoluble BAFOT, and dilution of the resultant paste to 50% solids by weight with additional MEK. The fluorene-amine curative was prepared for dispersion in this epoxy resin system by jet milling to a mean particle size of <5 um. To this dispersion an accelerator, the triflic acid half salt of 2-ethyl-4-methylimidazole was added at a rate of 4 parts per hundred of the solids in the dispersion.

Provenance & Evidence