Coating composition for inhibiting corrosion of metal substrates

Patent · Tue Jun 29 00:00:00 EDT 1993

OSTI ID:6347754

Seibel, L P

The corrosion-inhibiting coating composition for application to a metal substrate is described comprising: (a) from about 55% to about 78.5%, by weight of nonvolatile material, of an epoxy resin having a molecular weight of about 15,000 to about 80,000; (b) from about 20% to about 40%, by weight of nonvolatile material, of a phenolic resin; (c) from about 1.5% to about 5%, by weight of nonvolatile material, of an organic corrosion inhibitor having the structural formula: wherein each R is selected, independently, from the group consisting of hydrogen, alkyl, haloalkyl, alkoxy, alkylthio, alkylsulfonyl, cycloalkyl, phenyl, alkylphenyl, phenylalkyl, halo, cyano, nitro, carboxyl, carboxyalkyl, hydroxy, amino, and carbamoyl, and wherein R[sub 1], R[sub 2], R[sub 3] and R[sub 4] are selected, independently, from the group consisting of hydrogen, alkyl, hydroxyalkyl, haloalkyl, alkoxyalkyl, carboxyalkyl, carboxyl, phenyl, and phenylalkyl, and wherein at least one of the R[sub 1], R[sub 2], R[sub 3] and R[sub 4] groups is a carboxyl group; and (d) a sufficient amount of a nonaqueous carrier such that the corrosion-inhibiting composition includes from about 20% to about 40%, by weight of the total composition, of nonvolatile material.

• Assignee: Dexter Corp., Windsor Locks, CT (United States)
• Patent Number(s): US 5223025; A
• Application Number: PPN: US 7-753930
• OSTI ID: 6347754
• Resource Relation: Patent File Date: 3 Sep 1991
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
METALS
CORROSION PROTECTION
PROTECTIVE COATINGS
CHEMICAL COMPOSITION
CORROSION INHIBITORS
EPOXIDES
MOLECULAR WEIGHT
RESINS
COATINGS
ELEMENTS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
360105* - Metals & Alloys- Corrosion & Erosion