Abstract: A stable catalyst solution suitable for catalyzing the polycondensation of reactants to make polyester polymers comprising: (i) M, wherein M is represented by an alkaline earth metal or alkali metal and (ii) aluminum and (iii) ethylene glycol and (iii) organic hydroxyacid compounds having at least three carbon atoms and less than three carboxylic acid groups when the hydroxyacid compound has 8 or less carbon atoms, wherein the molar ratio of ethylene glycol:aluminum is at least 35:1. The hydroxyacid compounds enhance to solubility of M and Al in ethylene glycol, even at even at molar ratios of M:Al approaching 1:1. There is also provided a method for the manufacture of the composition, its feed to and use in the manufacture of a polyester polymer, and polyester polymers obtained by combining certain ingredients or containing the residues of these ingredients in the composition.

Abstract: The invention addresses an composition of matter comprising a cation [Ct]+ and an anion [A]−, the anion comprises a core Group-13 element bound to partially or completely fluorinated fluoroaryl ligands, at least one of the fluoroaryl ligands is substituted with a Group-15 element that has been rendered essentially inert for subsequent chemical reaction through its unbonded electron pair by substituting an electron-withdrawing group on it. [Ct]+ may be selected from anilinium and ammonium cations, trityl carbenium cations, Group-11 metal cations, silylium cations, the cations of the hydrated salts of Group-1 or -2 metals, and derivatives of the foregoing anilinium, ammonium, trityl carbenium, and silylium cations containing C1-C20 hydrocarbyl, hydrocarbylsilyl, or hydrocarbylamine substituents for one or more hydrogen atoms of said cations.

Abstract: The invention relates to a process for preparing partial hydrolysates of organometallic compounds and to a process for preparing partial hydrolysates of organometallic compounds, in particular alkylaluminoxanes, or transition metal catalysts immobilized on inert support materials and also to the products prepared by this process.

Abstract: A trityl perfluorophenyl alumninate such as tris(2,2′,2″-nonafluorobiphenyl)-fluoroaluminate (PBA⊖) and its role as a cocatalyst in metallocene-mediated olefin polymerization is disclosed. Gallium and indium analogs are also disclosed, as are analogs with different anyl groups or different numbers of flourine atoms thereon.

Abstract: A process is disclosed for forming an aluminoxane composition comprising methylaluminoxane by mixing trimethylaluminum, or a mixture of trimethylaluminum and one or more other trihydrocarbylaluminum compounds, with an organoaluminum compound containing a trialkylsiloxide moiety and then oxygenating the mixture to form the aluminoxane. Oxygenation can be carried out by controlled hydrolysis or by treatment with an organic compound containing carbon-oxygen bonds, such as carbon dioxide. A preferred trialkylsiloxide moiety is of the formula --OSi(CH.sub.3).sub.3, such as in a compound of the formula (CH.sub.3).sub.2 AlOSi(CH.sub.3).sub.3.

Abstract: A process is provided herein for preparing an organo-substituted sodium aluminum hydride by reacting sodium, aluminum, an organic compound of specific structure containing a hydroxyl group and hydrogen.In such process, an aluminum alloy is used as the aluminum.

Abstract: Mixtures of a metal salt of formula ##STR1## and a metal salt of formula ##STR2## in which formulae (1) and (2) Me is a metal ion of valency n,n is 2, 3 or 4, andeach of the rings A and B independently of the other is unsubstituted or substituted by halogen, lower alkyl, lower alkoxy or an .alpha.