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US 5,853,621 AGranted
Corrosion resistant paint
AssigneeMonsanto Company
InventorsGranville G. Miller, Lawrence W. Shacklette, Ronald L. Elsenbaumer, Bernhard Weszling, Peter Whang, Vaman G. Kulkarni
Life of this patent
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Abstract
This invention relates to an improved anti-corrosion paint of the type comprising one or more polymeric binders dispersed in a liquid medium, said improvement comprising an anti-corrosion effective amount of one or more non-conductive conjugated polymers.
Claims16
A coated metal substrate comprising:
- a metal substrate formed from a metal which is subject to corrosion;
- and
- a coating on all or a portion of one or more of the surfaces of said substrate;
- said coating having an electrical conductivity of less than about 10.sup.-8 S/cm and comprising one or more polymeric binders and an anti-corrosion effective amount of one or more nonconductive conjugated polymers in addition to said polymeric binder wherein said one or more nonconductive conjugated polymers is a conjugated homopolymer or copolymer having (a) a conjugated main backbone chain and side chains which comprise a number of carbon and hetero atoms and (b) having a doping level of from zero to about 0.5 mole % based on the total number of carbon and hetero atoms which comprise the conjugated main backbone chain or side chains.
1 more element
Dependencies are inferred from the claim text.