US4009008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colored water immiscible organic liquid
Assignee: ATK Launch Systems LLC
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Filing: 1974-11-18
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Granted: 1977-02-22
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Expires: 1994-11-18
Abstract
Abstract Novel disazo colorants or dyes for marking organic liquids, the colorants having the general formula <IMAGE> where R1 is H, CF3, or alkyl having from 1 to 4 carbon atoms, R2 is H, or alkyl having from 1 to 4 carbon atoms, R3 and R4 are each H, OCH3, OC2H5 or CH3, and R5, R6 and R7 are each H, or alkyl having from 1 to 12 carbon atoms, at least one of said R5, R6 and R7 being alkyl.
Inventors
- 👤 Richard B. Orelup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:25
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/003; C09; C09B; C09B31/00; C09B31/02; C09B31/04; C09B31/053; Y; Y10; Y10S; Y10S252/00; Y10S252/965; Y10T; Y10T436/00; Y10T436/13
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
126 words
A colored water immiscible organic liquid having dissolved therein a disazo colorant corresponding to the formula ##STR23## in which R 1 is H, CF 3 , or alkyl having from 1 to 4 carbon atoms, R 2 is H or alkyl having from 1 to 4 carbon atoms, R 3 and R 4 are each H, OCH 3 , OC 2 H 5 or CH 3 and R 5 , R 6 and R 7 are each H or alkyl having 1 to 12 carbon atoms, at least one of said R 5 , R 6 and R 7 being alkyl, said disazo colorant being highly resistant to removal from said organic liquid by the commonly used adsorbents such as carbon black, charcoal, clay and silica.
Claim 2
Dependent Claim
126 words
A colored water immiscible organic liquid having dissolved therein a disazo colorant corresponding to the formula ##STR23## in which R 1 is H, CF 3 , or alkyl having from 1 to 4 carbon atoms, R 2 is H or alkyl having from 1 to 4 carbon atoms, R 3 and R 4 are each H, OCH 3 , OC 2 H 5 or CH 3 and R 5 , R 6 and R 7 are each H or alkyl having 1 to 12 carbon atoms, at least one of said R 5 , R 6 and R 7 being alkyl, said disazo colorant being highly resistant to removal from said organic liquid by the commonly used adsorbents such as carbon black, charcoal, clay and silica.
Claim 3
Dependent Claim
53 words
The colored water immiscible organic liquid of Claim 1 wherein R 1 is CF 3 , R 2 is H, R 3 is OCH 3 , R 4 is CH 3 , R 5 is C 7 H 15 , R 6 is C 12 H 25 , and R 7 is H.
Claim 4
Dependent Claim
65 words
A colored water immiscible organic liquid having dissolved therein a disazo colorant comprising a mixture of compounds having the formula ##STR24## where R 1 , R 2 , R 3 and R 4 are each H or CH 3 , said disazo colorant being highly resistant to removal from said organic liquid by the commonly used adsorbents such as carbon black, charcoal, clay and silica.
Claim 5
Dependent Claim
65 words
A colored water immiscible organic liquid having dissolved therein a disazo colorant comprising a mixture of compounds having the formula ##STR24## where R 1 , R 2 , R 3 and R 4 are each H or CH 3 , said disazo colorant being highly resistant to removal from said organic liquid by the commonly used adsorbents such as carbon black, charcoal, clay and silica.
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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) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |