Patent US4628092A successfully refreshed from Google Patents.
US4628092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Triethylenediamine containing acetylenic alcohols as flow aids
Assignee: Air Products and Chemicals Inc
•
Filing: 1985-06-21
•
Granted: 1986-12-09
•
Expires: 2005-06-21
Abstract
Abstract The flowability of stored triethylenediamine is improved by admixing with a flow promoting amount of a C 5 -C 28 acetylenic alcohol. Especially suitable as a flow promoting additive for triethylenediamine is a mixture of 3,6-dimethyl-1-heptyne-3-ol and 3,5,8,10-tetramethyl-6-dodecyn-5,8-diol.
Inventors
- 👤 Akio Takahashi
- 👤 Robert G. Petrella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:53
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/08; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/20; C08G18/2045; C08G18/2063; C08G18/28; C08G18/67; C08G18/671; C08G18/6745; C08G18/675; C08G18/679
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
27 words
A method for improving the flowability of stored triethylenediamine which comprises mixing with the triethylenediamine a flow improving amount of a C 5 -C 28 acetylenic alcohol.
Claim 2
Independent Claim
27 words
A method for improving the flowability of stored triethylenediamine which comprises mixing with the triethylenediamine a flow improving amount of a C 5 -C 28 acetylenic alcohol.
Claim 3
Dependent Claim
42 words
The method of claim 1 in which the flow promoting additive is represented by either of the formulas ##STR2## where R 1 and R 4 are C 1 -C 10 alkyl groups, and R 2 and R 3 are methyl or ethyl.
Claim 4
Dependent Claim
18 words
The method of claim 1 in which 0.01-1 part of acetylenic alcohol is mixed per 100 parts triethylenediamine.
Claim 5
Dependent Claim
18 words
The method of claim 2 in which 0.01-1 part of the additive is mixed per 100 parts triethylenediamine.
Claim 6
Dependent Claim
11 words
The method of claim 4 in which the additive is 3,5,8,10-tetramethyl-6-dodecyne-5,8-diol.
Claim 7
Dependent Claim
11 words
The method of claim 4 in which the additive is 3,6-dimethyl-1-heptyne-3-ol.
Claim 8
Dependent Claim
11 words
The method of claim 4 in which the additive is 3,6-dimethyl-4-octyne-3,6-diol.
Claim 9
Dependent Claim
16 words
The method of claim 4 in which the additive comprises a mixture of 3,5,8,10-tetramethyl-6-dodecyne-5,8-diol and 3,6-dimethyl-1-heptyne-3-ol.
Claim 10
Dependent Claim
20 words
A composition consisting essentially of triethylenediamine admixed with a flow promoting amount of a C 5 -C 28 acetylenic alcohol.
Claim 11
Dependent Claim
20 words
A composition consisting essentially of triethylenediamine admixed with a flow promoting amount of a C 5 -C 28 acetylenic alcohol.
Claim 12
Dependent Claim
42 words
The composition of claim 9 in which the flow promoting additive is represented by either of the formulas ##STR3## where R 1 and R 4 are C 1 -C 10 alkyl groups, and R 2 and R 3 are methyl or ethyl.
Claim 13
Dependent Claim
18 words
The composition of claim 9 in which 0.01-1 part of acetylenic alcohol is mixed with 100 parts triethylenediamine.
Claim 14
Dependent Claim
18 words
The composition of claim 10 in which 0.01-1 part of the additive is mixed per 100 parts triethylenediamine.
Claim 15
Dependent Claim
11 words
The composition of claim 11 in which the additive is 3,5,8,10-tetramethyl-6-dodecyne-5,8-diol.
Claim 16
Dependent Claim
11 words
The composition of claim 11 in which the additive is 3,6-dimethyl-1-heptyne-3-ol.
Claim 17
Dependent Claim
11 words
The composition of claim 11 in which the additive is 3,6-dimethyl-4-octyne-3,6-diol.
Claim 18
Dependent Claim
16 words
The composition of claim 11 in which the additive comprises a mixture of 3,5,8,10-tetramethyl-6-dodecyne-5,8-diol and 3,6-dimethyl-1-heptyne-3-ol.
References Cited (Backward Citations)
US3240558A
Cited
US3457304A
Cited
US3925226A
Cited
US4345079A
Cited
JPS57203039A
Cited
US4559384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-08 | 1990-06-09 | 1990-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-08 | 1994-06-09 | 1994-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-08 | 1998-06-09 | 1998-12-09 | $7700.00 | Window Closed / Lapsed |