Hopper car anti-bridging method and coating
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United States of America Patent
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Feb 27, 2001
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N/A
app pub date -
Dec 9, 1998
filing date -
Nov 6, 1998
priority date (Note) -
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Abstract
A method of treating hopper cars to prevent bridging or sticking of bulk commodities during unloading by applying a coating of a mixture comprising pigments including graphite, solvents, resins, a drier/cross-linking/hardening system, and a rheological system. The resin is selected from the group consisting of alkyds, acrylics, polyesters, hydrocarbon resins, rosin-based resins, polyamides, urethanes, and epoxies. The solvent comprises aliphatic and aromatic hydrocarbons. Ranges in weight-percent for each of the components is set forth, as well as a specific formulation.
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