US4389219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized coal-oil mixture
Assignee: DKS Co Ltd
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Filing: 1982-02-23
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Granted: 1983-06-21
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Expires: 2002-02-23
Abstract
Abstract Mixture of a fuel oil and pulverized coal are stabilized by the addition of a small amount of a polyether-type adduct having a molecular weight of from 6,000 to 600,000 between a lower alkylene oxide and a poly(lower alkyleneimine) compound, or a derivative of said adduct.
Inventors
- 👤 Akihiro Naka
- 👤 Shuichi Honjo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:30
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/32; C10L1/322; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
157 words
A coal-oil mixture composition comprising a fuel oil, 20 to 70% by weight of pulverized coal and an effective amount of, as a stabilizing agent, a polyether-type adduct of a molecular weight from 6,000 to 600,000 of a lower alkylene oxide with a starting compound selected from the group consisting of: (a) a poly(lower alkyleneimine) having 7 to 200 nitrogen atoms; (b) an adduct of a lower alkyleneimine having 7 to 200 nitrogen atoms with a compound having at least one active hydrogen atom selected from the group consisting of an alcohol, a phenol, an amine and a carboxylic acid; and (c) a reaction product of said compound (a) or (b) with a compound selected from the group consisting of an aldehyde, a ketone, an alkyl halide, an isocyanate, a thiocyanate, a compound having active double bond, an epoxy compound, an epihalohydrin, a cyanamide, a guanidine, urea, a carboxylic acid, an acid anhydride, and an acyl halide.
Claim 2
Dependent Claim
157 words
A coal-oil mixture composition comprising a fuel oil, 20 to 70% by weight of pulverized coal and an effective amount of, as a stabilizing agent, a polyether-type adduct of a molecular weight from 6,000 to 600,000 of a lower alkylene oxide with a starting compound selected from the group consisting of: (a) a poly(lower alkyleneimine) having 7 to 200 nitrogen atoms; (b) an adduct of a lower alkyleneimine having 7 to 200 nitrogen atoms with a compound having at least one active hydrogen atom selected from the group consisting of an alcohol, a phenol, an amine and a carboxylic acid; and (c) a reaction product of said compound (a) or (b) with a compound selected from the group consisting of an aldehyde, a ketone, an alkyl halide, an isocyanate, a thiocyanate, a compound having active double bond, an epoxy compound, an epihalohydrin, a cyanamide, a guanidine, urea, a carboxylic acid, an acid anhydride, and an acyl halide.
Claim 3
Dependent Claim
16 words
The composition of claim 1, wherein said adduct has a molecular weight from 10,000 to 300,000.
Claim 4
Dependent Claim
16 words
The composition of claim 2, wherein said starting compound contains from 9 to 100 nitrogen atoms.
Claim 5
Dependent Claim
15 words
The composition of claim 1, wherein said starting compound contains a polyethyleneimino or polypropyleneimino chain.
Claim 6
Dependent Claim
15 words
The composition of claim 1, wherein said alcohol is tallow alcohol, glycerol or diethylene glycol.
Claim 7
Dependent Claim
12 words
The composition of claim 1, wherein said phenol is phenol or nonylphenol.
Claim 8
Dependent Claim
13 words
The composition of claim 1, wherein said amine is diethylenetriamine or tallow alkylamine.
Claim 9
Dependent Claim
20 words
The composition of claim 1, wherein said carboxylic acid having at least one active hydrogen atom is coconut fatty acid.
Claim 10
Dependent Claim
11 words
The composition of claim 1, wherein said ketone is diethyl ketone.
Claim 11
Dependent Claim
12 words
The composition of claim 1, wherein said alkyl halide is ethyl chloride.
Claim 12
Dependent Claim
10 words
The composition of claim 1, wherein said epihalohydrine is epichlorohydrine.
Claim 13
Dependent Claim
12 words
The composition of claim 1, wherein said starting compound is polyethyleneimine laurate.
Claim 14
Dependent Claim
18 words
The composition of claim 1, wherein said lower alkylene oxide is ethylene oxide, propylene oxide or butylene oxide.
Claim 15
Dependent Claim
44 words
The composition of claim 1, wherein said polyether-type adduct contains a ramdom or blocked ethylene oxide/propylene oxide chain, the content of ethylene oxide being from 3 to 80% by weight, preferably 10 to 50% by weight based on the weight of said polyether-type adduct.
Claim 16
Dependent Claim
11 words
The composition of claim 1, wherein said coal is cleaned coal.
Claim 17
Dependent Claim
16 words
The composition of claim 15, wherein said cleaned coal is prepared by the oil agglomeration process.
Claim 18
Dependent Claim
15 words
The composition of claim 15, wherein said cleaned coal is prepared by the floatation process.
References Cited (Backward Citations)
US4251229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-20 | 1986-12-20 | 1987-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-20 | 1990-12-20 | 1991-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-20 | 1994-12-20 | 1995-06-21 | $7700.00 | Window Closed / Lapsed |