Cathodic coating compositions comprising lightweight hollow glass microspheres, zinc powder and zinc dust
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United States of America Patent
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Dec 3, 1996
Issued Date -
N/A
app pub date -
Aug 15, 1995
filing date -
Aug 9, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A coating composition for use in protecting metallic substrates from corrosion, comprising in weight percent, based on the total weight of the composition: from about 10% to 20% of a film forming substance; from about 45% to 55% of zinc powder; from about 25% to 35% of zinc dust; from about 1.5% to 2.5% of hollow glass microspheres having diameters ranging from 1 to about 150 microns and a true density of 0.3 to 1.1; from about 2% to 15 % by weight of the film forming substance, of a hardener; about 1% to 2% by weight of the film forming substance, of an amorphous silica; and about 0.3% to 1% of a flow control agent.
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