CN86104739A - Coal-the water mixture that contains poly-(alkylene oxide) tensio-active agent and hydroxyalkyl polygalactomannan - Google Patents
Coal-the water mixture that contains poly-(alkylene oxide) tensio-active agent and hydroxyalkyl polygalactomannan Download PDFInfo
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- CN86104739A CN86104739A CN86104739.7A CN86104739A CN86104739A CN 86104739 A CN86104739 A CN 86104739A CN 86104739 A CN86104739 A CN 86104739A CN 86104739 A CN86104739 A CN 86104739A
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- coal
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- alkylene oxide
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
- C10L1/326—Coal-water suspensions
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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Manipulation Of Pulses (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
- Liquid Carbonaceous Fuels (AREA)
Abstract
The invention provides and a kind ofly contain from the hydrophilic section of oxyethane and make the coal-water mixture of the hydroxyalkyl ether used as stabilizers of tensio-active agent, polygalactomannan from poly-(alkylene oxide) that the hydrophobic section of senior alkylene oxide is formed.Specific examples comprises ethoxylation, propenoxylated propylene glycol and Rhoximat RH 148 respectively.When using this tensio-active agent and stablizer, the coal-water mixture that contains 50% to 80% particulate coal is piled up the excellent stability of performance to silt deposition and bed.The present invention also provides the preparation method, adds stablizer in the mixture that coal, water, tensio-active agent form, and makes stable uniform mixture.Fabulous pipeline transportation stability is arranged.
Description
The present invention relates to have the coal-water mixture of ideal flow and stability.More particularly, the present invention relates to coal-water mixture of forming by the hydroxyalkyl ether of poly-(alkylene oxide) tensio-active agent and polygalactomannan.
U.S. Patent No. 4,242,098 has delivered in the coal water slurry and has used water-soluble polymers, as Rhoximat RH 148 or carboxy-methyl hydroxy propyl guar gum, makes that highly filled coal water slurry might be forced out, pumping and transportation.
United States Patent (USP) the 4th, 441 has been delivered for No. 889 and not only to be contained xanthene glue (xan than gum) but also contain guar gum and the stable coal-water mixture of nonionic surface active agent is arranged.Patent has been delivered the alkyl phenol that comprises ethoxylation, and ethoxylation, propenoxylated propylene glycol and ethoxylation, propenoxylated Alkylenediamine are at the example of interior multiple nonionic surface active agent.
Coal-the water mixture that the present invention relates to comprises: a) from the hydrophilic section of oxyethane and poly-(alkylene oxide) tensio-active agent of forming from the hydrophobic section of senior alkylene oxide; B) polymer stabilizer of forming by the hydroxyalkyl ether of polygalactomannan.The present invention also relates to the preparation method of above-mentioned coal-water mixture, comprising: ⅰ) form mixture by powder Paniculate coal, water with from the hydrophilic section of oxyethane with from poly-(alkylene oxide) tensio-active agent that the hydrophobic section of senior alkylene oxide is formed; ⅱ) in the gained mixture, add the stablizer of forming by the hydroxyalkyl ether of polygalactomannan; ⅲ) stir resulting product, form uniform mixture.
Coal-water mixture of the present invention is the mixture of the glycan stablizer of coal and water fluid that contains poly-(alkylene oxide) tensio-active agent and modification." coal " this speech is the common name that is used to refer to the coal of commercially available different sorts and grade.Preferentially select for use the specific examples of coal to have: the low-volatite bituminous coal from the state of West Virginia is arranged, and from the high-volatile bituminous coal of the Kentucky State, Ohio or Arizona State with from the sub-bituminous coal of Montana State, they all can be used for enforcement of the present invention.Hard coal, semi-anthracitic coal, in also can be used for the present invention with high-volatile bituminous coal and brown coal.
Coal for the present invention uses can be dry state or hygrometric state, and mixes formation coal one fluid slurry with fluid.For making the coal that the particulate grade is used, preferably earlier use the currently known methods wet-milling, in case dust and explosion hazard.The wet-milling coal dust both can stir jointly with whole water, also can be mixed and made into the water slurry that pump is taken out in pipeline easily with enough excessive waters, just formed coal-water syrup when mixing with the meal powdered coal again.
In the embodiment an of the best, the coal dustization that elder generation uses coal-fluid slurry of the present invention." fine coal " of Shi Yonging (or " p.c. ") speech is meant to be ground to the coal that denseness is about 40 orders * 0 in this manual.Referring to " Ohio restrains sharp Forlan for physics and chemistry handbook the 51st edition, CRC publishing company, 1970-71, and the F-199 page or leaf, its content is herein incorporated for your guidance.
In view of the mode of coal fragmentation when grinding, Pulverized Coal is to be erose.But the specific mesh that the loose powder of the subsieve type of its integral body (or between maximum both sides thickness) can be crossed screen cloth.The big or small available sphere diameter of loose powder is represented.Here " sphere diameter " speech of usefulness is defined as the U.S. sieve size from 16 orders (1.18mm) to 1400 orders (0.038mm) or amounts to a micron unit, and the powder of coal or coal-water syrup sample can pass such mesh.Than the thinner powder of 200 orders, its particle diameter can represent that available dusting cover, sedimentation determinator or scanning electronic microscope (SEM) are measured with mm.In an optimum implementation, about 85% arrives the particle diameter of about 90% powder less than 200 orders.
The mixture of various coals also can be used in the water slurry of the present invention.Explanation rather than the present invention limited for example below, we can be with containing less than about 30%(weight) the rough coal powder (as hard coal or low-volatite bituminous coal) of volatilizable hydrocarbon and contain greater than about 35%(weight) mixture of the fine breeze (as brown coal or high-volatile bituminous coal) of volatilizable hydrocarbon.We also can be with the mixture of two or more above-mentioned rough coal powder and a kind of above-mentioned fine breeze, also can be with the mixture of a kind of above-mentioned rough coal powder and two or more above-mentioned fine breezes, also can be with the mixture of two or more above-mentioned rough coal powder and two or more above-mentioned fine breezes.
Water slurry of the present invention comprises one or more water fluids." liquid " speech that is used for this specification sheets is meant water and the alcohols miscible with water.The water fluid of using for water slurry of the present invention should be carried out the lyriform pore of two functions-fillings carbonaceous solids material at least and provide carrier for the collision between the minimizing powder.Therefore, the water fluid of preferentially selecting for use is a kind of carrier water fluid.
In an optimum implementation, the water fluid that is used for water slurry of the present invention is a carrier water." the carrier water " that is used for this specification sheets be meant be dispersed between Pulverized Coal and in abutting connection with the major portion of the free water in powder frictional belt, and be different from combination water." combination water " speech is meant the water that is retained on " in conjunction with water layer ", and this has definition and illustrates on " chemical industry complete works " the 2nd edition the 22nd volume 90-97 page or leaf (at the 91st page) that Kirk-Othemer compiles.
The water that is used as " carrier water " in coal-water syrup of the present invention can be any getable water, as mineral water, well water, river or lake water, or low the desalinizing seawater of mineral salt content, this desalinizing seawater can be controlled the electrochemistry in conjunction with water layer and carrier water termination according to the present invention, simultaneously, the corrosion of grinding plant, pipeline and process furnace also can reduce to minimum and controlled.
When adding water in the fine particles containing carbon of pulverizing, if powder during by water " wetting ", then different with on every side " free water " or whole water structure surperficial moisture films can be adsorbed on each powder.This film is known as " half steel " or " combination water " film.The thickness of this film is decided with the intrinsic electromotive force on surface, can be the thickness of several molecule layer.
In another embodiment, water and with the mixture of the miscible alcohols of water be water fluid in the water slurry of the present invention.But this alcohols and water complete miscibility or part are miscible, as methyl alcohol, ethanol, n-propyl alcohol, and Virahol, the trimethyl carbinol, glycerine etc.Below for illustrating rather than the present invention is limited, we can be with about 1% to about 49%(volume) alcohol and about 51% to the 99%(volume) the mixture of water composition.In an optimum implementation, mixture contains about 1% to about 15%(volume) alcohol, all the other mainly are water.Preferably liquid mixable with water of alcohol contains about 1 to about 10 carbon atoms, as methyl alcohol, ethanol, Virahol, the trimethyl carbinol, glycerine etc. in the molecule.
Highly filled coal water slurry, particularly the pipe-line transportation of coal water slurry is well-known.The definition of highly filled coal water slurry, normally the weight with coal-water mixture is radix, contains to have an appointment 50% to about 80%(weight) the powder coal.Coal water slurry of the present invention can contain about 50% to about 80%(weight) the powder coal, arrive about 70%(weight but preferably contain about 65%) the powder coal.
Poly-(alkylene oxide) tensio-active agent that is suitable in the present invention is a long-chain organic compound or its mixture, has in the molecular chain from the obvious hydrophilic section of oxyethane with from the obvious hydrophobic section of senior alkylene oxide.When with about 0.1%(weight) or the content that is higher than this be added in the aqueous solution, generate and have the aqueous solution that surface tension is lower than 50 dynes per centimeter.Suitable tensio-active agent example is just like the initial segmented copolymer of water of oxyethane and senior alkylene oxide (as propylene oxide).Specific examples comprises the segmented copolymer of the oxyethane of the merchant of BASF AG name Pluronic.
The hydroxyalkyl ether of polygalactomannan is another main ingredient in coal-water mixture of the present invention.Practical is a kind of glycan-polygalactomannan in the present invention.This glycan is by its free hydroxyl and following segmented copolymer effect and by etherificate, by the initial oxyethane of alkylene oxide, low-level chain triacontanol (as methyl alcohol) and the inlay and break copolymer of senior alkylene oxide, by senior alkylene oxide, rudimentary dibasic alcohol (as ethylene glycol or propylene glycol) initial oxyethane and the inlay and break copolymer of senior alkylene oxide etc.
Polygalactomannan is made up of semi-lactosi and seminose repeating unit.The source of polygalactomannan comprises fabaceous seed, as the endosperm of melon ear seeds and thorn locust bean.
Hydroxyalkyl ether is the hydroxyalkyl guar gum preferably, as Rhoximat RH 148 and hydroxyethyl guar gum.These two kinds of glue generally by alkylene oxide, prepare with guar gum generation base catalyzed reactions respectively as propylene oxide or oxyethane." hydroxyalkyl ether of polygalactomannan " speech also comprises mixed derivative.As wherein not only with alkylene oxide but also take the polygalactomannan of etherificate with second etherifying agent.The second suitable etherifying agent comprises second alkylene oxide and/or alkylating agent, as the alkylogen of chloromethane and so on.Can generate the hydroxyalkyl ether of blended polygalactomannan with this second etherifying agent.For the hydroxyalkyl ether performance that does not cause polygalactomannan becomes bad, the consumption of second etherifying agent should be controlled.For example, be applicable to the hydroxyalkyl ether of polygalactomannan of the present invention, the hydroxypropyl mole that has replace (m.s.) degree scope in water system for about 0.02 to about 3.0, be about 0.2 to about 4.0 in pure system; The methyl molar substitution scope that has is about 0.01 to about 2.0.
The mixture of hydroxyalkyl ether derivative is also available certainly, all can use in the present invention as the mixture of Rhoximat RH 148 and hydroxyethyl guar gum and the mixture of Rhoximat RH 148 and hydroxypropylmethyl guar gum.
The hydroxyalkyl ether of polygalactomannan adds in coal-water mixture with certain deal, and the total concn (weight of Yi Meishui-mixture is radix) of etherification galactomannan in coal-water mixture is not waited from about 0.02% to about 0.2%.
When preparation coal of the present invention-water mixture, be preferably in and add before the stablizer, earlier nonionic surface active agent is added in the carbon containing water slurry to prevent the Pulverized Coal surface and as the interaction between the modified xylanase polymkeric substance of stablizer; Otherwise, just this effect can take place.
More particularly, when preparation coal of the present invention-water mixture, at first tensio-active agent and other are wanted the auxiliary agent that adds, be added in the water as the defoamer of routine etc., (500rpm is to about 1 according to appointment, 500rpm under the condition of stirring at low speed, preferably about 1,000rpm) stir for some time, time range about 30 seconds to about 3 minutes, preferably about 1 minute.Aqueous mixture is injected the ball mill that contains corase grind coal (for example maximum particle diameter is 1/4 inch).The quantity of coal (with the form of the percentage ratio of total materials such as the coal that injects ball mill, water, chemical preparations) can from 50% to 75% wait, and commonly used is 70%.Sphere diameter and the Intake Quantity relevant with the amount of grinding charge material decide according to common engineering practice, as determine that other abrasive parameters (for example rotating speed and rotation duration) is the same.Grind to keep the constant size distribution in order making, should to regulate that abrasive parameters compensates because the difference that coal and/or chemical additive cause.
Wet milling process is made after coal-water mixture, adds water and makes wherein contained solid reach the content of expection.By slight stirring, preferably polymer stabilizer is added in the mixture with powder type, stirred 30-40 minute with the speed of 3-4000r.p.m..Crossed during this period of time, polymkeric substance is dissolving fully just.At last, add solution or Powdered sanitas (as formaldehyde).
The preparation method of coal-water mixture that another is highly filled, mobile is that pulverized coal is dispersed in the solution of being made up of following component.These components are tensio-active agent, water, also can have when needing, as other processing aids such as defoamer or PH conditioning agents.Pulverized coal has been ground to 75%-90% usually and has passed through Tyler standard sieve 200 orders.By the method for preferentially selecting for use, in the cartridge type container, embed 90 ° 4 plate washers of being separated by, four slurry homogenizers are with the rotating speed rotation of 500-1500r.p.m. simultaneously.The plate washer size is relevant with the geometrical shape of container, and the conformance with standard engineering philosophy.Pulverized coal is slowly added in the solution that is stirred, after full dose is injected, append again and stirred 15-60 minute.(2-400r.p.m.) adds polymer stabilizer under slight the stirring then, and makes it to dissolve fully.
Representational stirring used herein or diverting device comprise that for example, Premiere grinds " Hi-Vispersator " high speed dispersor of company.
Certainly, the residence time of pointing out above, parameters such as mixing velocity all should change with concrete processing request (as component volume, plant bulk, stirring efficiency etc.).Therefore, these processing request conditions of the present invention can be done corresponding the adjustment as replica plant, factory etc. along with the scale of operation.As implied above, the additive that can be added in coal-water mixture comprises defoamer, salt, bases or other conditioning agent, also has the supply of these materials.Usually the available defoamer be conventional, comprise the goods that contain silica gel and non-silica gel.The commercially available defoamer that is applicable to this mixture is the COLLOID by the supply of Colloids company
-6910.These goods normally are made up of the mixture that contains mineral oil, acid amides and ester.
When preparation goods of the present invention, the weight ratio of nonionic surface active agent and water is about 0.1: 40 to about 1: 25.In optimum implementation, add defoamer and come nation to help preparation.The weight ratio of defoamer and water is about 1: 25 to about 0.01: 40.Then, pulverized coal is mixed the liquid that obtains flowability with about 65 parts of heavy coals with water to the ratio of about 75 parts of heavy said mixtures.The etherification galactomannan that can add above-mentioned deal is then being stablized this mixture aspect silt deposition and the bed accumulation.Also can the mixture total weight amount about 0.1 add other auxiliary agent to the ratio of about 0.3 part of weight, as salt or bases, antiseptic-germicide (as formaldehyde) etc., viscosity stabilizer (as ammonia) etc., help the dispersion of fine coal and other favourable condition be provided with further nation.
Embodiment 1
Do not add formaldehyde or hydroxypropyl polygalactomannan during beginning, make coal-water mixture.By following material in shown in ratio inject ball mill and prepare rough coal-water mixture, and be ground to 83%(weight) powder can pass through till Tyler standard sieve 200 orders.The component of following weight percentage is mixed:
Table 1
(bituminous coal pauses peat now
#1,
1/4 inch, maximum particle diameter) 70%(weight)
The ethoxylized nonylphenol tensio-active agent
(Igepal
CO-990; GAF company) 0.55%(weight)
Alkyl defoamer 0.30%(weight)
Water 29.15%(weight)
When grind made particle diameter be reduced to described value after, material is divided into 4 five equilibriums, add 0.05%(weight in every part of sample) formaldehyde as sanitas.(Galactasol 416 for amount interpolation hydroxypropyl polygalactomannan below pressing in 3 parts of reagent shown in the table 2; Henkel company).
Measure initial apparent viscosity with Haake Rv 12 Rotovisco rheometers, (shearing setting 57.6S
-1The time shear-stress divided by shearing rate).After apparent viscosity was measured, whole 4 samples all were placed on 8 time-of-weeks in the static basin under the envrionment conditions.After this static storage period, by inserting the amount that the measurement of-6 inches metal machinist's rules accumulates in the hard accumulative deposit thing of sample plasma bottle bottom.When making scale penetrate the deposit surface of the through hard accumulation of water slurry, read penetration depth from scale with the have gentle hands pressure.Represent sedimental amount with the percentage ratio of the bulk sample degree of depth: (ho-h)/ho * 100 grams, sample total depth in the ho=container in the formula, the degree of depth of the material of non-deposition of h=and loose accumulation.
Table 2
8 weeks after hydroxypropyl galactomannan apparent viscosity (CPS) viscosimetric analysis
The settling % of the initial reading of the % concentration of glycan
0.0 456 70.4
0.05 1070 48.1
0.075 1980 18.8
0.1 2700 5.0
Embodiment 2
Do not add formaldehyde or hydroxypropyl polygalactomannan during beginning, make coal-water mixture.By following material in shown in ratio inject ball mill and prepare rough coal-water mixture, and be ground to 83%(weight) powder can pass through till Tyler standard sieve 200 orders.The component of following weight percentage is mixed:
Table 3
(bituminous coal pauses peat now
#1,
1/4 inch, maximum particle diameter) 70%(weight)
The oxyethane propylene oxide block altogether
Polymers tensio-active agent 0.45%(weight)
Alkyl defoamer (COLLOIDS
691; Colloids company) 0.3%(weight)
Water 29.25%(weight)
When grind made particle diameter be reduced to described value after, material is divided into 4 equal portions, add 0.05%(weight in every part of sample) formaldehyde as sanitas.(Galactasol 416 for amount interpolation hydroxypropyl polygalactomannan below pressing in 3 parts of samples shown in the table 4; Enkel company).
Measure initial apparent viscosity with Haake Rv 12 Rotovisco rheometers and (shearing setting 57.6S
-1The time shear-stress divided by shearing rate).After apparent viscosity is measured, whole 4 samples all be placed in the static basin under the envrionment conditions 8 time-of-weeks through this static storage period after, measure the amount of the hard accumulative deposit thing that accumulates in the sample plasma bottle bottom with-6 inches metal machinist's rules.Make scale penetrate the through hard deposit surface of piling up of water slurry with the have gentle hands pressure, read penetration depth from scale.Represent sedimental amount with the percentage ratio of bulk sample height: (ho-h)/ho * 100 grams, the total depth of sample in the ho=container in the formula, the degree of depth of the material of non-deposition of h=and loose accumulation.
Table 4
After hydroxypropyl galactomannan apparent viscosity (CPS) viscosimetric analysis
The settling % in 8 weeks of initial reading of the % concentration of glycan
0.00 965 61.21
0.05 2220 7.2
0.075 2830 0.0
0.10 5540 0.0
Claims (12)
1, a kind of coal-water mixture is characterized in that: a) from the hydrophilic section of oxyethane and poly-(alkylene oxide) tensio-active agent of forming from the hydrophobic section of senior alkylene oxide; B) contain the polymer stabilizer of the hydroxyalkyl ether of polygalactomannan.
2, according to the goods of claim 1, it is characterized in that wherein the amount of tensio-active agent is enough to the wetting Pulverized Coal that is present in the mixture, wherein the amount of stablizer is enough to stablize coal-water mixture with regard to silt deposition and bed accumulation.
3,, it is characterized in that coal wherein is a pulverized coal according to the goods of claim 1.
4,, it is characterized in that wherein the amount of coal is about 50% to about 80%(weight according to the goods of claim 1) (is radix with the coal-water mixture).
5,, it is characterized in that senior alkylene oxide tensio-active agent wherein is a propylene oxide according to the goods of claim 1.
6,, it is characterized in that wherein tensio-active agent is ethoxylation, propenoxylated propylene glycol according to the goods of claim 1.
7,, it is characterized in that wherein the hydroxyalkyl ether of polygalactomannan is a hydroxypropyl ether according to the goods of claim 1.
8,, it is characterized in that wherein the hydroxyalkyl ether of polygalactomannan is the hydroxyalkyl ether of guar gum according to the goods of claim 1.
9,, it is characterized in that wherein stablizer is a Rhoximat RH 148 according to the goods of claim 1.
10,, it is characterized in that wherein stablizer is the hydroxypropylmethyl guar gum according to the goods of claim 1.
11, prepare the method for coal-water mixture, this method comprises ⅰ) by powder Paniculate coal, water with from the hydrophilic section of oxyethane and the mixture that forms from poly-(alkylene oxide) tensio-active agent that the hydrophobic section of senior alkylene oxide is formed; ⅱ) the stablizer of the hydroxyalkyl ether that contains polygalactomannan of interpolation stable quantity in the mixture that makes; ⅲ) stir resultant product, form uniform mixture.
12, improving one's methods of a kind of conveying or pumping coal-water mixture is to add in coal-water mixture: a) from the hydrophilic section of oxyethane and poly-(alkylene oxide) tensio-active agent of forming from the hydrophobic section of senior alkylene oxide; B) contain the stablizer of the hydroxyalkyl ether of polygalactomannan.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US75686585A | 1985-07-18 | 1985-07-18 | |
| US756,865 | 1985-07-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86104739A true CN86104739A (en) | 1987-04-22 |
| CN1016701B CN1016701B (en) | 1992-05-20 |
Family
ID=25045388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86104739A Expired CN1016701B (en) | 1985-07-18 | 1986-07-17 | Coal-the water mixture that contains poly-(alkylene oxide) tensio-active agent and hydroxyalkyl polygalactomannan |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0209122A1 (en) |
| JP (1) | JPS6251510A (en) |
| KR (2) | KR870001295A (en) |
| CN (1) | CN1016701B (en) |
| SU (1) | SU1545947A3 (en) |
| ZA (1) | ZA864807B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3746128B2 (en) * | 1997-01-14 | 2006-02-15 | 竹本油脂株式会社 | Synthetic fiber lubricant and synthetic fiber lubrication method |
| JP2002249789A (en) * | 2001-02-27 | 2002-09-06 | Idemitsu Kosan Co Ltd | Defoaming agent for fuel oil and fuel oil composition |
| DE102007008842A1 (en) * | 2007-02-23 | 2008-08-28 | Dow Wolff Cellulosics Gmbh | Production of methyl guar |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1604216A (en) * | 1978-03-17 | 1981-12-02 | Hercules Ltd | |
| US4358293A (en) * | 1981-01-29 | 1982-11-09 | Gulf & Western Manufacturing Co. | Coal-aqueous mixtures |
| FR2558840B1 (en) * | 1984-01-31 | 1986-09-26 | Rhone Poulenc Spec Chim | AQUEOUS SUSPENSIONS OF SOLID PARTICLES |
-
1986
- 1986-06-27 ZA ZA864807A patent/ZA864807B/en unknown
- 1986-07-16 JP JP61168981A patent/JPS6251510A/en active Pending
- 1986-07-16 EP EP86109728A patent/EP0209122A1/en not_active Withdrawn
- 1986-07-17 CN CN86104739A patent/CN1016701B/en not_active Expired
- 1986-07-17 SU SU864027806A patent/SU1545947A3/en active
- 1986-07-18 KR KR1019860005822A patent/KR870001295A/en not_active Application Discontinuation
- 1986-07-18 KR KR1019860006863A patent/KR870002523A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0209122A1 (en) | 1987-01-21 |
| CN1016701B (en) | 1992-05-20 |
| SU1545947A3 (en) | 1990-02-23 |
| ZA864807B (en) | 1987-02-25 |
| KR870002523A (en) | 1987-03-31 |
| KR870001295A (en) | 1987-03-12 |
| JPS6251510A (en) | 1987-03-06 |
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