US4339240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color changing polyacetylenic compounds
Assignee: Lifelines Technology Inc
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Filing: 1980-05-07
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Granted: 1982-07-13
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Expires: 2000-05-07
Abstract
Abstract Acetylenic compounds such as 2,6-hexadiyn-1,6-diol-bis(p-phenylazophenylsulfonate) having a conjugated acetylenic portion capable of polymerization on exposure to actinic radiation and thermal annealing and a chromophoric portion. The color of the chromophoric portion provides a background for distinguishing color variations in the initial polymerization of conjugated acetylenic moieties.
Inventors
- 👤 Gordhanbhai N. Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:34
CPC Classifications
G; G01; G01K; G01K3/00; G01K3/02; G01K3/04; G01N; G01N31/00; G01N31/22; G01N33/00; G01N33/02
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
61 words
An indicator device comprising a substrate impregnated with an acetylenic compound having color in the visible spectrum and being active to polymerization on exposure to temperature or actinic radiation comprising an acetylenic portion having at least two conjugated acetylenic unsaturations and being capable of polymerization in the solid state, and at least one chromophore portion absorbing light in the visible spectrum.
Claim 2
Dependent Claim
61 words
An indicator device comprising a substrate impregnated with an acetylenic compound having color in the visible spectrum and being active to polymerization on exposure to temperature or actinic radiation comprising an acetylenic portion having at least two conjugated acetylenic unsaturations and being capable of polymerization in the solid state, and at least one chromophore portion absorbing light in the visible spectrum.
Claim 3
Dependent Claim
44 words
The indicator device of claim 1 wherein said acetylenic compound is of the formula Q--(CH.sub.2).sub.n --C.tbd.C--C.tbd.C--(CH.sub.2).sub.n --R wherein at least one of Q and R is a chromophoric substituent absorbing light in the visible spectrum and n is an integer from 1 to 10.
Claim 4
Dependent Claim
14 words
The indicator device of claim 2 wherein Q and R each contain azo chromophores.
Claim 5
Dependent Claim
13 words
The indicator device of claim 3 wherein Q and R are each ##STR14##
Claim 6
Dependent Claim
12 words
The indicator device of claim 4 wherein n is 1 to 4.
Claim 7
Dependent Claim
13 words
The indicator device of claim 3 wherein Q and R are each ##STR15##
Claim 8
Dependent Claim
12 words
The indicator device of claim 6 wherein n is 1 to 4.
Claim 9
Dependent Claim
10 words
The indicator device of claim 7 wherein n is 1.
Claim 10
Dependent Claim
102 words
In a process which comprises applying to a perishable product an integral indicator of history of exposure to time-temperature or to radiation comprising at least one acetylenic compound having at least two conjugated acetylene groups per molecule, the improvement wherein the at least one acetylenic compound comprises at least one acetylenic compound having color in the visible spectrum and being active to polymerization on exposure to temperature or actinic radiation comprising an acetylenic portion having at least two conjugated acetylenic unsaturations and being capable of polymerization in the solid state, and at least one chromophore portion absorbing light in the visible spectrum.
Claim 11
Dependent Claim
102 words
In a process which comprises applying to a perishable product an integral indicator of history of exposure to time-temperature or to radiation comprising at least one acetylenic compound having at least two conjugated acetylene groups per molecule, the improvement wherein the at least one acetylenic compound comprises at least one acetylenic compound having color in the visible spectrum and being active to polymerization on exposure to temperature or actinic radiation comprising an acetylenic portion having at least two conjugated acetylenic unsaturations and being capable of polymerization in the solid state, and at least one chromophore portion absorbing light in the visible spectrum.
Claim 12
Dependent Claim
43 words
The process of claim 9 wherein said acetylenic compound is of the formula Q--(CH.sub.2).sub.n --C.tbd.C--C.tbd.C--(CH.sub.2).sub.n --R wherein at least one of Q and R is a chromophoric substituent absorbing light in the visible spectrum and n is an integer from 1 to 10.
Claim 13
Dependent Claim
13 words
The process of claim 10 wherein Q and R each contain azo chromophores.
Claim 14
Dependent Claim
12 words
The process of claim 11 wherein Q and R are each ##STR16##
Claim 15
Dependent Claim
11 words
The process of claim 12 wherein n is 1 to 4.
Claim 16
Dependent Claim
12 words
The process of claim 11 wherein Q and R are each ##STR17##
Claim 17
Dependent Claim
11 words
The process of claim 14 wherein n is 1 to 4.
Claim 18
Dependent Claim
9 words
The process of claim 15 wherein n is 1.
Claim 19
Dependent Claim
99 words
In a perishable product having applied thereto an integral indicator of history of exposure to time-temperature or to radiation comprising at least one acetylenic compound having at least two conjugated acetylene groups per molecule, the improvement wherein the at least one acetylenic compound comprises at least one acetylenic compound having color in the visible spectrum and being active to polymerization on exposure to temperature or actinic radiation comprising an acetylenic portion having at least two conjugated acetylenic unsaturations and being capable of polymerization in the solid state, and at least one chromophore portion absorbing light in the visible spectrum.
Claim 20
Dependent Claim
99 words
In a perishable product having applied thereto an integral indicator of history of exposure to time-temperature or to radiation comprising at least one acetylenic compound having at least two conjugated acetylene groups per molecule, the improvement wherein the at least one acetylenic compound comprises at least one acetylenic compound having color in the visible spectrum and being active to polymerization on exposure to temperature or actinic radiation comprising an acetylenic portion having at least two conjugated acetylenic unsaturations and being capable of polymerization in the solid state, and at least one chromophore portion absorbing light in the visible spectrum.
Claim 21
Dependent Claim
44 words
The perishable product of claim 16 wherein said acetylenic compound is of the formula Q--(CH.sub.2).sub.n --C.tbd.C--C.tbd.C--(CH.sub.2).sub.n --R wherein at least one of Q and R is a chromophoric substituent absorbing light in the visible spectrum and n is an integer from 1 to 10.
Claim 22
Dependent Claim
14 words
The perishable product of claim 18 wherein Q and R each contain azo chromophores.
Claim 23
Dependent Claim
13 words
The perishable product of claim 19 wherein Q and R are each ##STR18##
Claim 24
Dependent Claim
12 words
The perishable product of claim 20 wherein n is 1 to 4.
Claim 25
Dependent Claim
13 words
The perishable product of claim 21 wherein Q and R are each ##STR19##
Claim 26
Dependent Claim
12 words
The perishable product of claim 22 wherein n is 1 to 4.
Claim 27
Dependent Claim
10 words
The perishable product of claim 23 wherein n is 1.
References Cited (Backward Citations)
US3999946A
Cited
US4228126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-12 | 1986-01-11 | 1986-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-12 | 1990-01-11 | 1990-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-12 | 1994-01-11 | 1994-07-13 | $7700.00 | Window Closed / Lapsed |