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US 4,377,492 AGranted
Post emulsifiable fluorescent penetrant
AssigneePurex Corporation
InventorJohn P. Jones
Life of this patent
Estimating the term…
Abstract
A post emulsifiable penetrant composition for applications and entry into flaws in solid surfaces consists essentially of (a) a first solvent ingredient comprising a high boiling point aromatic hydrocarbon, (b) a second solvent ingredient selected from the group that includes di-phthalates and diesters, (c) epoxidized material selected from the group that consists of epoxidized esters, oils and resins, (d) fluorescent dye, and (e) fluorescent brightener.
Claims11
A post emulsifiable penetrant composition for application and entry into flaws in solid surfaces, consisting essentially of
- (a) 1-40 percent, by weight, of a first solvent ingredient comprising an aromatic hydrocarbon having a boiling point within the range of from about 350.degree. F. to about 600.degree. F.,
- (b) 20-80 percent, by weight, of a second solvent ingredient selected from the group that consists of phthalates,
- (c) 10-25 percent, by weight, of epoxidized material selected from the group that consists of epoxidized soybean oils,
- (d) 0.1-3.0 percent, by weight, or fluorescent dye, and
- (e) 0.1-4.5 percent, by weight, of fluorescent brightener,
- (f) said weight percentages adjusted to produce visible fluorescence under blacklight in a groove of the following dimensions,
- (i) width about 0.1-2 microns
- (ii) depth about 10-50 microns.
5 more elements
Dependencies are inferred from the claim text.