US3888894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tertiary diamides
Assignee: Sun Research and Development Co
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Filing: 1972-10-02
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Granted: 1975-06-10
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Expires: 1992-10-02
Abstract
Abstract This invention relates to novel liquid tertiary diamides having the following structural formula: WHEREIN N O-10 R -(CH2)m-CH3 wherein M 4-12 One such diamide is N,N''-2,2,5,5-tetramethylhexamethylene-N,N''dimethylpelargonamide. The diamides have utility as heat transfer fluids and plasticizers.
Inventors
- 👤 Robert M Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:55
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20; A; A01; A01N; A01N57/00; A01N57/10; A01N57/12; C07; C07C; C07C209/00; C07C209/44; C07C209/48; C07C255/00; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/1651; C09; C09K; C09K5/00; C09K5/08; C10; C10M; C10M105/00; C10M105/56; C10M105/68; C10M2215/00; C10M2215/08; C10M2215/24; C10M2215/28; C10N; C10N2030/00; C10N2030/02; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13; C10N2040/25; C10N2040/255; C10N2070/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
Compound according to claim 1 wherein n 1-8 and m 5-10.
Claim 2
Dependent Claim
11 words
Compound according to claim 2 wherein the diamide is N,N''-2, 2,5,5-tetramethylhexamethylene-N,N''-dimethylpelargonamide.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |