US3929406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of detecting defects and composition therefor
Assignee: Deering Milliken Research Corp
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Filing: 1973-05-21
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Granted: 1975-12-30
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Expires: 1993-05-21
Abstract
Abstract A method of detecting defects in substrates comprising the steps of applying to a substrate, a composition comprising a fugitive tint and a solvent mixture containing at least two solvents of differing polarity which are substantially immiscible under certain conditions, and permitting said composition to undergo phase separation whereby the tint migrates with one of the solvents to a portion of the substrate to facilitate visual inspection of the substrate. Also, a detecting composition.
Inventors
- 👤 Larry B Farmer
- 👤 James E Hendrix
- 👤 Hans H Kuhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:22
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/36; D; D04; D04B; D04B35/00; D04B35/22; D06; D06H; D06H3/00; G01N21/00; G01N21/84; G01N21/88; G01N21/91; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
83 words
A METHOD OF DETECTING DEFECTS IN FABRICS COMPRISING THE STEPS OF: A. APPLYING TO A FABRIC, A COMPOSITION COMPRISING A FUGITIVE POLYETHYLENEOXY MODIFIED DYESTUFF AND A SOLVENT MIXTURE CONTAINING AT LEAST TWO MISCIBLE SOLVENTS OF DIFFERING POLARITY WHICH ARE SUBSTANTIALLY IMMISCIBLE WHEN EXPOSED TO THE ATMOSPHERE IN THIN FILMS, AND B. PERMITTING SAID COMPOSITION TO UNDERGO PHASE SEPARATION ON SAID FABRIC WHEREBY THE TINT MIGRATES WITH ONE OF THE SOLVENTS TO A PORTION OF THE FABRIC TO FACILITATE VISUAL INSPECTION OF THE FABRIC.
Claim 2
Independent Claim
83 words
A METHOD OF DETECTING DEFECTS IN FABRICS COMPRISING THE STEPS OF: A. APPLYING TO A FABRIC, A COMPOSITION COMPRISING A FUGITIVE POLYETHYLENEOXY MODIFIED DYESTUFF AND A SOLVENT MIXTURE CONTAINING AT LEAST TWO MISCIBLE SOLVENTS OF DIFFERING POLARITY WHICH ARE SUBSTANTIALLY IMMISCIBLE WHEN EXPOSED TO THE ATMOSPHERE IN THIN FILMS, AND B. PERMITTING SAID COMPOSITION TO UNDERGO PHASE SEPARATION ON SAID FABRIC WHEREBY THE TINT MIGRATES WITH ONE OF THE SOLVENTS TO A PORTION OF THE FABRIC TO FACILITATE VISUAL INSPECTION OF THE FABRIC.
Claim 3
Dependent Claim
27 words
The method as defined in claim 1 wherein said fugitive tint is soluble in one of said solvents and substantially insoluble in the other of said solvents.
Claim 4
Dependent Claim
44 words
The method as defined in Claim 1 wherein said polyethyleneoxy fugitive tint has the formula R((CH2CH2O)nH)x wherein R is a dyestuff radical, n is at least 15, x is from 1 to 6, and the product of n times x is at least 30.
Claim 5
Dependent Claim
15 words
The method as defined in claim 1 wherein said polyethyleneoxy fugitive tint has the formula
Claim 6
Dependent Claim
24 words
The method as defined in claim 1 wherein one of said solvents is a polar solvent and a second solvent is a non-polar solvent.
Claim 7
Dependent Claim
15 words
The method as defined in claim 1 wherein the solvent mixture comprises perchloroethylene and methanol.
Claim 8
Dependent Claim
14 words
The method as defined in claim 6 wherein the solvent mixture further comprises dioxane.
Claim 9
Dependent Claim
18 words
The method as defined in claim 1 wherein the solvent mixture comprises 1,1,1-trichloroethane, formamide, methanol and methylene chloride.
Claim 10
Dependent Claim
20 words
The method as defined in claim 1 wherein the solvent mixture comprises perchloroethylene, methylene chloride and ethylene glycol monomethyl ether.
Claim 11
Dependent Claim
12 words
The method as defined in claim 1 wherein said composition includes water.
Claim 12
Dependent Claim
20 words
The method as defined in claim 1 wherein the solvent phase separation and tint migration takes place at ambient temperature.
Claim 13
Dependent Claim
13 words
The method as defined in claim 1 wherein the substrate is a textile.
Claim 14
Dependent Claim
21 words
The method as defined in claim 1 wherein the substrate is a textile fabric including two different types of polyester fibers.
Claim 15
Dependent Claim
43 words
A detecting composition comprising a fugitive polyethyleneoxy modified dyestuff and a solvent mixture containing at least two miscible solvents of differing polarity which are substantially immiscible when exposed to the atmosphere in thin films whereby the tint migrates with one of the solvents.
Claim 16
Dependent Claim
43 words
A detecting composition comprising a fugitive polyethyleneoxy modified dyestuff and a solvent mixture containing at least two miscible solvents of differing polarity which are substantially immiscible when exposed to the atmosphere in thin films whereby the tint migrates with one of the solvents.
Claim 17
Dependent Claim
27 words
The composition as defined in claim 14 wherein said fugitive tint is soluble in one of said solvents and substantially insoluble in the other of said solvents.
Claim 18
Dependent Claim
44 words
The composition as defined in claim 14 wherein said polyethyleneoxy fugitive tint has the formula R((CH2CH2O)nH)x wherein R is a dyestuff radical, n is at least 15, x is from 1 to 6, and the product of n times x is at least 30.
Claim 19
Dependent Claim
15 words
The composition as defined in claim 14 wherein said polyethyleneoxy fugitive tint has the formula
Claim 20
Dependent Claim
24 words
The composition as defined in claim 14 wherein one of said solvents is a polar solvent and a second solvent is a non-polar solvent.
Claim 21
Dependent Claim
15 words
The composition as defined in claim 14 wherein the solvent mixture comprises perchloroethylene and methanol.
Claim 22
Dependent Claim
14 words
The composition as defined in claim 19 wherein the solvent mixture further comprises dioxane.
Claim 23
Dependent Claim
18 words
The composition as defined in claim 14 wherein the solvent mixture comprises 1,1,1-trichloroethane, formamide, methanol and methylene chloride.
Claim 24
Dependent Claim
20 words
The composition as defined in claim 14 wherein the solvent mixture comprises perchloroethylene, methylene chloride and ethylene glycol monomethyl ether.
Claim 25
Dependent Claim
12 words
The composition as defined in claim 14 wherein said composition includes water.
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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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |