US4345079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scoopable triethylene diamine
Assignee: Air Products and Chemicals Inc
•
Filing: 1980-04-21
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Granted: 1982-08-17
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Expires: 2000-04-21
Abstract
Abstract Scoopability of triethylene diamine (TEDA) is improved by admixture therewith of a minor quantity (about 0.5 up to 2% by weight) of an additive in liquid form. The types of additives described are liquid glycol compounds selected from among polyethylene glycols, glycol esters, glycol ethers and amino alcohols. Preferred additives are: Carbowax polyethylene glycols having the general formula HOCH.sub.2 (CH.sub.2 OCH.sub.2).sub.x CH.sub.2 OH wherein x is about 3 to about 13, glycol diacetate and triethylene glycol diacetate.
Inventors
- 👤 Floyd L. Hyman
- 👤 Martin H. Ziv
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:10
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/08
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
42 words
The method of improving scoopability properties of stored triethylene diamine which comprises admixing therewith a minor amount of an additive consisting essentially of a normally liquid compound selected from the group consisting of polyethylene glycols, glycol esters, glycol ethers and amino alcohols.
Claim 2
Independent Claim
42 words
The method of improving scoopability properties of stored triethylene diamine which comprises admixing therewith a minor amount of an additive consisting essentially of a normally liquid compound selected from the group consisting of polyethylene glycols, glycol esters, glycol ethers and amino alcohols.
Claim 3
Dependent Claim
20 words
The method as defined in claim 1 wherein said triethylene diamine is admixed with 0.5% to 2% of the additive.
Claim 4
Dependent Claim
38 words
The method as defined in claim 1 or 2 wherein said additive is a polyethylene glycol of the average molecular formula HOCH.sub.2 (CH.sub.2 OCH.sub.2).sub.x CH.sub.2 OH wherein x is an integer of from about 3 to about 13.
Claim 5
Independent Claim
16 words
The method as defined in claims 1 or 2 wherein said additive compound comprises glycol diacetate.
Claim 6
Independent Claim
16 words
The method as defined in claims 1 or 2 wherein said additive comprises triethylene glycol diacetate.
Claim 7
Dependent Claim
39 words
A composition comprising triethylene diamine admixed with a minor quantity of an additive improving scoopability, said additive consisting essentially of a normally liquid compound selected from the group consisting of polyethylene glycols, glycol esters, glycol ethers and amino alcohols.
Claim 8
Dependent Claim
39 words
A composition comprising triethylene diamine admixed with a minor quantity of an additive improving scoopability, said additive consisting essentially of a normally liquid compound selected from the group consisting of polyethylene glycols, glycol esters, glycol ethers and amino alcohols.
Claim 9
Dependent Claim
20 words
The composition as defined in claim 6 wherein said triethylene diamine is admixed with 0.5 to 2% of the additive.
Claim 10
Dependent Claim
20 words
The composition as defined in claim 6 wherein said triethylene diamine is admixed with up to 1% of said additive.
Claim 11
Dependent Claim
40 words
The composition as defined in claims 6, 7 or 8 wherein said additive is a polyethylene glycol of the average molecular formula HOCH.sub.2 (CH.sub.2 OCH.sub.2).sub.x CH.sub.2 OH wherein x is an integer from about 3 to about 12 or 13.
Claim 12
Dependent Claim
16 words
The composition as defined in claims 6, 7 or 8 wherein said additive comprises glycol diacetate.
Claim 13
Dependent Claim
14 words
The composition as defined in claim 7 wherein said additive comprises triethylene glycol diacetate.
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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) | 1985-08-16 | 1986-02-15 | 1986-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-16 | 1990-02-15 | 1990-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-16 | 1994-02-15 | 1994-08-17 | $7700.00 | Window Closed / Lapsed |