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US 4,282,123 AGranted
Elastomeric urethane coating
AssigneeMobil Oil Corporation
InventorJoseph E. Ilaria
Life of this patent
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Abstract
A two-component coating system comprises (A) a polyfunctional acid (dimer acid), low base strength amine (aniline), and high base strength amine (cyclohexylamine) adduct of a diglycidyl ether of bisphenol and (B) an organic diol reacted with 2 moles of a diisocyanate. The coating is particularly adapted for coating surfaces subject to high abrasion, e.g., railroad hopper cars.
Claims4
A two-component coating composition wherein:
- (1) Component A comprises an adduct of a diglycidyl ether of bisphenol A, having an epoxy equivalent weight between about 170 and about 2,000, polyfunctional acid, and a mixture of aliphatic and aromatic amine, pigment, magnesium silicate talc extender, and a solvent mixture of alkoxyethyl acetate, alkyl ketone, ethyl acetate, and aromatic hydrocarbon with a solids content of 60-70 weight percent;
- and
- (2) Component B comprises a urethane prepolymer based on flexible polyhydroxy functional oligomers and toluene diisocyanate or isophorone diisocyanate;
- (3) said Component A and Component B being mixed at the time of application.
1 more element
Dependencies are inferred from the claim text.