“…where m, n = 3-12; s + t + 2r = 3; l + x + 2y + z = 3; R = Et, i Pr, or i Bu; R* = C(CH 3 )=CHC(O)CH 3 ; and R** = C(CH 3 )=CHC(O)OC 2 H 5 , were prepared as described elsewhere [4,5]. To produce binder mate rials, an appropriate amount of a solvent (aliphatic alcohol) was added to an yttrium containing orga noalumoxane, the reaction mixture was stirred until complete dissolution of the yttrium containing orga noalumoxane, and then samples for analysis (appear ance, viscosity, and wt % aluminum) were taken.…”