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Abstract

The present invention is directed to a process for producing a polymeric alkyl-aryl alcohol resin, and to resins produced by the process of the invention. In the process of the invention (which uses a Meerwein-Pondorff-Verley reduction), a mixture of a polymeric alkyl-aryl ketone resin and a metal alkoxide reducing agent is combined in a solvent. The mixture is refluxed to form a polymeric metal alkoxide intermediate and a ketone (which is removed from the mixture to allow the reaction to go to completion). The solvent reacts with the metal alkoxide intermediate to form a polymeric alkyl-aryl alcohol. Preferably, the metal alkoxide reducing agent is aluminum isopropoxide, and the solvent is isopropyl alcohol, the use of which may result in the regeneration of the aluminum isopropoxide when the polymeric alkyl-aryl alcohol is formed. The invention is also directed to a process for making a non-aqueous ink and to inks formed with the process of the invention. In the process, a polymeric alkyl-aryl alcohol, as described above, is formed, and blended with at least one solvent, a novalac resin, a lubricant, such as a sesquloleate, and a pigment to form the ink. Useful ink solvents include, but are not limited to, glycols, glycol ethers, cyclic amides, alcohols, and mixtures thereof.

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First Claim