Abstract A corrosion-inhibiting poly(arylene sulfide) coating composition is described which comprises a mixture of a normally solid poly(arylene sulfide) resin, a corrosion-inhibiting agent selected from alkali metal nitrites, benzoates, phthalates; ammonium chromates, benzoates, phthalates; mixtures of alkali metal chromates and alkali metal borates; morpholine; or combinations thereof, dispersed in a liquid suspending agent. An illustrative coating composition contains 25 weight percent poly(phenylene sulfide) resin, 8 weight percent titanium dioxide, 33 weight percent water, 33 weight percent propylene glycol and 1 weight percent sodium nitrite. The coating compositions are useful in inhibiting the occurrence of corrosion during coating and curing of the coating compositions to iron and iron-containing alloys in the formation of cured poly(arylene sulfide) resin coated iron or iron-containing alloy laminates.
A corrosion-inhibiting poly(phenylene sulfide) coating composition which, when coated upon iron or iron alloy substances and baked, will yield a poly(phenylene sulfide) coating with improved adhesion and smoothness which comprises: a. a normally solid poly(phenlene sulfide) resin composition, b. about 0.5 to about 30 parts by weight of sodium nitrite per hundred parts by weight of said poly(phenylene sulfide) resin, and c. about 60 to about 900 parts by weight of a mixture of propylene glycol and water per hundred parts by weight of said poly(phenylene sulfide) resin.
Claim 2
Dependent Claim
88 words
A corrosion-inhibiting poly(phenylene sulfide) coating composition which, when coated upon iron or iron alloy substances and baked, will yield a poly(phenylene sulfide) coating with improved adhesion and smoothness which comprises: a. a normally solid poly(phenlene sulfide) resin composition, b. about 0.5 to about 30 parts by weight of sodium nitrite per hundred parts by weight of said poly(phenylene sulfide) resin, and c. about 60 to about 900 parts by weight of a mixture of propylene glycol and water per hundred parts by weight of said poly(phenylene sulfide) resin.