Sasol North America, Inc.

Thomas J Martin

Dave S Pope

A process for producing nano sized boehmite aluminas which are stable at alkaline pH values wherein an aqueous medium of a peptized boehmite alumina is treated with a water dispersible polycarboxylic acid polymer and optionally with an organic water dispersible base having a molecular weight ranging from 500 to 3000 and having no more than three basic groupings to produce a treated boehmite alumina which forms a stable sol at a pH of greater than 6, the treated boehmite alumina having a dispersed particle size of less than 500 nm in the sol.

High pH dispersible nano-aluminas

A composition of matter or modifier for use in modifying unfunctionalized polymers comprising a metal oxide substrate that can be formed into a sol, a water soluable, acid moiety, having a hydrocarbyl group with olefinic unsaturation, bound to the metal oxide substrate and a water soluble, free radical initiator, the composition of matter generally being in the form of a dry powder that can be mixed with a polymer lacking functional groups whereupon when the mixture is subjected to conditions which result in the decomposition of the free radical initiator to form free radicals.

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Tulsa County, OK, United States of America

Thomas J Martin