US3671451A
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Fluorescent compositions
Assignee: Wyeth Holdings LLC
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Filing: 1968-03-27
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Granted: 1972-06-20
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Expires: 1988-03-27
Abstract
Abstract Compositions useful for imparting fluorescent properties to surfaces comprising at least one compound of the formula: WHEREIN R1 and R2 represent individually alkyl of 1-18 carbons; R3 and R4 each represent a monocyclic or bicyclic aryl radical.
Inventors
- 👤 Boydston Lewis Butterfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:34
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/38; C07D209/00; C07D209/56; C07D209/80; C07D209/82; C07D209/88; C09; C09D; C09D11/00; C09D11/50; C09K; C09K11/00; C09K11/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
23 words
The object resulting from the process of claim 1 having color under visible light and adapted to fluoresce during exposure to UV radiation.
Claim 2
Dependent Claim
15 words
The method of claim 1 wherein the aminoterephthalate is the diethyl ester of 2,5-di-p-toluidinoterephthalic acid.
Claim 3
Dependent Claim
33 words
A coating or printing compOsition adapted to form a fluorescent coating when deposited upon a solid substrate, the composition containing as a fluorescent component at least one substituted amino-terephthalate represented by the formula:
Claim 4
Dependent Claim
44 words
The composition of claim 4 wherein the composition is an ink formulation containing, on a weight basis, about 25 parts of fluorescer, about 5-20 parts of heavy lithographic varnish, about 0-50 parts of light lithographic varnish and about 5-25 parts of light mineral oil.
Claim 5
Dependent Claim
19 words
The composition of claim 4 wherein the composition is a coating formulation comprising a resin and a liquid vehicle.
Claim 6
Dependent Claim
15 words
The composition of claim 5 wherein the terephthalate is the diethyl ester of 2,5-di-p-toluidinoterephthalic acid.
Claim 7
Dependent Claim
15 words
A polymeric composition comprising a polymeric substrate and a fluorescent component represented by the formula:
Claim 8
Dependent Claim
15 words
The composition of claim 8 wherein the component is the diethyl ester of 2,5-di-p-toluidinoterephthalic acid.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |