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Patent US4377492A successfully refreshed from Google Patents.
US4377492A
Expired / Lapsed
US
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Post emulsifiable fluorescent penetrant
Assignee: Turco Products Inc
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Filing: 1980-09-08
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Granted: 1983-03-22
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Expires: 2000-09-08
Abstract
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.
Inventors
- 👤 John P. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:38
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/02; G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/91
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
128 words
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° F. to about 600° 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.
Claim 2
Dependent Claim
128 words
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° F. to about 600° 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.
Claim 3
Dependent Claim
33 words
The composition of claim 1 wherein the first solvent is selected from the group that consists of: PANASOL AN-3, PANASOL AN-2K, Amsco-Solv E 95, Hi sol 4-l, Chartersol 4-P, and Aromatic solvent R.
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein the first solvent consists of PANASOL AN-3.
Claim 5
Dependent Claim
13 words
The composition of claim 3 wherein said second solvent consists of dioctyl phthalate.
Claim 6
Dependent Claim
31 words
The composition of claim 1 wherein said second solvent is selected from the group that consists essentially of dioctyl phthalate, diethyl phthalate, dibutyl phthalate, diisodecyl phthalate, diisooctyl phthalate, di(n-octyl, N-decyl) phthalate.
Claim 7
Dependent Claim
14 words
The composition of claim 5 wherein said epoxidized material consists essentially of DRAPEX 6.8.
Claim 8
Dependent Claim
13 words
The composition of claim 4 wherein said epoxidized material consists of DRAPEX 6.8.
Claim 9
Dependent Claim
13 words
The composition of claim 6 wherein said fluorescent dye consists of a naphthalimide.
Claim 10
Dependent Claim
12 words
The composition of claim 8 wherein said naphthalimide consists of Hudson yellow.
Claim 11
Dependent Claim
23 words
The composition of claim 1 wherein said fluorescent brightener consists of an MDAC or other coumarin derivative such as Hiltamine Arctic White SOL.
Claim 12
Dependent Claim
29 words
The composition of claim 1 wherein the weight percentage of said (a)-(e) ingredients are: (a) about 23.0 (b) about 54.0 (c) about 18.0 (d) about 1.0 (e) about 4.0.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |