Dry liquid alumina trihydrate concentrates
AssigneeUnion Carbide Corporation
InventorSidney Ethan Berger
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Abstract
This invention is concerned with dry liquid concentrates of hydrated alumina, that is, aluminum trihydrate, coated with a substantial amount of a silane containing three hydrolyzable groups bonded to a silicon atom thereof and containing at least one monovalent group which contains a polyalkylene oxide moiety therein, and/or hydrolyzates of such silanes and/or condensates of such hydrolyzates. Such treated hydrated alumina concentrate are useful in the treatment of alumina trihydrate particles to enhance their usefulness in reinforced plastic compositions and in coatings.
Claims10
A composition comprising aluminum trihydrate particles containing on their surfaces a concentrated amount of silane, its hydrolyzates or resulting condensate, which silane possesses at least two to about three hydrolyzable groups bonded to the silicon thereof and an organic group which contains a polyalkylene oxide group, said concentrated amount of silane being at least greater than 5 and up to about 35 weight percent of the composition.
A process for the treatment of aluminum trihydrate particles which comprises mixing untreated aluminum trihydrate particles with treated aluminum trihydrate particles containing on their surfaces a concentrated amount of silane, its hydrolyzates or resulting condensate, which silane possesses at least two to about three hydrolyzable groups bonded to the silicon thereof and an organic group which contains a polyalkylene oxide group, said concentrated amount of silane being at least greater than 5 and up to about 35 weight percent, based on the total weight of said silane and said treated aluminum trihydrate particles.
Dependencies are inferred from the claim text.