Coating processes – Particles – flakes – or granules coated or encapsulated – Inorganic base
Patent
1988-12-28
1990-04-03
Lusignan, Michael
Coating processes
Particles, flakes, or granules coated or encapsulated
Inorganic base
428407, B05D 700
Patent
active
049139355
ABSTRACT:
The invention includes producing a stable polybutadiene film on an alumina support wherein the alumina contains an alumina having a habit or form of crystals formed during a precipitation of aluminum hydroxide from an alkali metal aluminate by preselecting and controlling the pH of the alkali metal aluminate and the addition of certain monohydric and polyhydric alcohols to the alkali metal aluminate solution. Precipitation is controlled to form crystals having a habit or form which varies from principally acicular to principally lamellar crystal forms. This alumina is (a) coated with polybutadiene to form a polymer film layer on the alumina support and (b) the polymer film layer is cross-linked to form a stable polybutadiene coated and crosslinked on a support of acicular or lamellar alumina.
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Aluminum Company of America
Glantz Douglas G.
Lusignan Michael
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