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US 5,399,189 AGranted
Anti-corrosive protective composition
AssigneeGEHA, naamloze vennootschap.
InventorHugo A. M. Glorieux
Life of this patent
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Abstract
Anti-corrosive protective compositions for metal. The composition contains a curable binder, which after curing has low water and oxygen permeability, and at least one filler composed of solid parts, characterised in that the filler contains expanded polymer parts with a size of 1 to 100 micrometer.
Claims8
An anti-corrosive composition for metal, which composition comprises:
- (a) a curable binder of polyurethane;
- (b) 0.05 to 6 wt % based on the total weight of the composition before curing, of a filler consisting of hollow expanded microspheres still containing blowing agent used for expansion, having a diameter of 1 to 100 micrometer, of a gas-impermeable thermoplastic organic polymer;
- and, optionally
- (c) at least one other filler, solvent or additive.
1 more element
Dependencies are inferred from the claim text.