CN104448352A - Dispersant composition and application thereof - Google Patents
Dispersant composition and application thereof Download PDFInfo
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Abstract
The invention discloses a dispersant composition, which comprises light oil, a surfactant and an anti-oxidant, by taking 100 weight part of dispersant composition as a reference, the content of the light oil is 85-99 parts, the content of the surfactant is 0.9-5 parts, and the content of anti-oxidant is 0.1-10 parts. The anti-oxidant is one or more selected from thiourea and its derivative, organic amine, bentonite, phytic acid and its derivative, dithiocarbamate, mercaptobenzothiazole and its derivative, and boric acid and its derivative. By using the dispersant composition, during a granulation process of polyacrylamide, high efficiency dispersion and no bonding of the polyacrylamide colloidal particles after granulation can be kept, and influence of composite effect of mechanical shearing and thermal oxidative degradation on the polymericular weight during a practical granulation process can be greatly reduced.
Description
Technical field
The present invention relates to a kind of disperser composition, and the application of this disperser composition in polyacrylamide granulation process.
Background technology
High molecular weight moieties hydro-polyacrylamide (HPAM) pulvis is the class chemical agent that tertiary oil production in oil field uses on a large scale, its molecular weight is higher, the Efficient Adhesive Promotion of the polymers soln of unit concentration is more remarkable, it expands swept volume to inject oil reservoir, the ability improving water-oil mobility ratio is stronger, therefore improves recovery ratio more remarkable.At present, the production technique of HPAM pulvis obtains colloid by polymerization of aqueous solution of acrylamide, then colloid is carried out granulation, drying, crushes and screens aftertreatment.In order to improve molecular weight product as far as possible, the links in production process need be considered, as monomer purity, polymerization initiation system, polymerization technique and colloid aftertreatment technology, optimize and reduce the negative impact of each influence factor to molecular weight as far as possible.Research finds, in colloid aftertreatment technology, the shearing action of granulation is a major cause of polymericular weight loss.In granulation process, add dispersion agent can reduce the impact of granulation shearing action on molecular weight, the uniform particles simultaneously making to obtain, loose, good fluidity, is easy to dry.
In existing relevant polyacrylamide dispersion agent Patents report, patent CN1498677A discloses a kind of dispersing agent for granulating from colloid, it is characterized in that this system comprises soap, kerosene and water, its weight percent is 5 ~ 20% soap: 30 ~ 60% kerosene: 20 ~ 55% tap water, and the weight percent sum of each component is 100%.
Patent CN101508933A discloses a kind of high molecular polymer lubricant oil dispersing auxiliary, it is characterized in that its ingredients by weight percentage composition is: lightweight oil 75 ~ 85%, emulsifying agent 5 ~ 8%, stablizer 2 ~ 3%, solubilisation aids 7 ~ 8% and tensio-active agent 3 ~ 6%.
But mostly be in existing patent and consider that mechanical shearing is on the impact of colloid molecules amount, and in actual mechanical process, no matter be the temperature of being polymerized discharging in rear still, or the drop temperature of material generally all reaches 80 ~ 90 DEG C after hydrolysis, under Current Temperatures, main polymer chain thermal-oxidative degradation is also point important factor that colloidal polymer amount reduces, and does not all relate to the impact of main polymer chain thermal-oxidative degradation on colloid molecules amount in existing patent.
Therefore, how comprehensively to solve or reduce this mechanical shearing and the research of thermal-oxidative degradation on the impact of colloidal polymer molecular weight is necessary.
Summary of the invention
The object of the invention is to be attached in the reagent operation process on polyacrylamide gel particles surface to overcome existing polyacrylamide granulation dispersion agent, the compound action of mechanical shearing and thermal-oxidative degradation, on the problem of the impact of polymericular weight, provides a kind of novel disperser composition.
The invention provides a kind of disperser composition, wherein, this disperser composition contains lightweight oil, tensio-active agent and antioxidant, and with the disperser composition of 100 weight parts for benchmark, the content of described lightweight oil is 85-99 weight part, the content of described tensio-active agent is 0.9-5 weight part, the content of described antioxidant is 0.1-10 weight part, described antioxidant is thiourea process, organic amine, wilkinite, phytic acid and derivative thereof, dithiocarbamate salt, one or more in mercaptobenzothiazole and derivative thereof and boric acid and derivative thereof.
Present invention also offers a kind of disperser composition, wherein, this disperser composition contains lightweight oil, tensio-active agent and antioxidant, and with 100 parts per weight dispersing agent for benchmark, the content of described lightweight oil is 95-99 weight part, the content of described tensio-active agent is 0.9-2 weight part, and the content of described oxidation inhibitor is 0.1-3 weight part; The kerosene of described lightweight oil to be proportion be 0.78-0.85, described tensio-active agent is polyoxyethylene sorbitan fatty acid ester and/or Span, and described antioxidant is thiourea process and/or mercaptobenzothiazole.
Present invention also offers the application of above-mentioned disperser composition in polyacrylamide granulation process.
Use disperser composition of the present invention, in polyacrylamide granulation process, the complete polyacrylamide gel particles of granulation can be made to keep high efficiency dispersion and no longer boning, and the compound action that significantly can reduce mechanical shearing and thermal-oxidative degradation in actual granulation operations process is on the impact of polymericular weight.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
According to a kind of disperser composition provided by the invention, wherein, this disperser composition contains lightweight oil, tensio-active agent and antioxidant, and with the disperser composition of 100 weight parts for benchmark, the content of described lightweight oil is 85-99 weight part, the content of described tensio-active agent is 0.9-5 weight part, the content of described antioxidant is 0.1-10 weight part, described antioxidant is thiourea process, organic amine, wilkinite, phytic acid and derivative thereof, dithiocarbamate salt, one or more in mercaptobenzothiazole and derivative thereof and boric acid and derivative thereof.
According to the present invention, no longer bond in order to the polyacrylamide gel particles making granulation complete further keeps high efficiency dispersion, and significantly can reduce the compound action of mechanical shearing and thermal-oxidative degradation in actual granulation operations process to the impact of polymericular weight, thus the high molecular weight polyacrylamide of molecular weight 3,000 ten thousand can be prepared further, under preferable case, with 100 parts per weight dispersing agent for benchmark, the content of described lightweight oil is 95-99 weight part, the content of described tensio-active agent is 0.9-2 weight part, and the content of described oxidation inhibitor is 0.1-3 weight part; The kerosene of described lightweight oil to be proportion be 0.78-0.85, described tensio-active agent is polyoxyethylene sorbitan fatty acid ester and/or Span, and described antioxidant is thiourea process and/or mercaptobenzothiazole.
According to the present invention, described tensio-active agent can be selected from C6-C18 alkyl polyoxyethylene ether sulfate, C6-C18 alkyl-sulphate, polyoxyethylene nonylphenol ether, C12-C18 aliphatic acid polyethenoxy ether, polyoxyethylene sorbitan fatty acid ester (tween) and Span (sapn) any one or multiple.Preferably, polyoxyethylene sorbitan fatty acid ester (tween) can be any one in polysorbas20, polysorbate40, polysorbate60 and tween 80.
In the present invention, in term " C6-C18 alkyl polyoxyethylene ether sulfate and C6-C18 alkyl-sulphate ", C6-C18 is the restriction to the monoalkyl in alkyl polyoxyethylene ether sulfate and alkyl-sulphate, that is, the alkyl of to be carbonatoms the be 6-18 of the monoalkyl in alkyl polyoxyethylene ether sulfate and alkyl-sulphate.Described C6-C18 alkyl polyoxyethylene ether sulfate can be such as six alkyl polyoxyethylene ether sulfates, seven alkyl polyoxyethylene ether sulfates, eight alkyl polyoxyethylene ether sulfates, nine alkyl polyoxyethylene ether sulfates, ten alkyl polyoxyethylene ether sulfates, undecyl polyoxyethylene ether sulfate, Sodium dodecylpolyoxyethylene sulfate, trideceth sulfates, tetradecyl polyoxyethylene ether sulfate, pentadecyl polyoxyethylene ether sulfate or ceteth vitriol.In like manner, described C6-C18 alkyl-sulphate can be such as six alkyl-sulphates, seven alkyl-sulphates, eight alkyl-sulphates, nine alkyl-sulphates, ten alkyl-sulphates, undecyl sulfates, dodecyl sulfate, trideceth sulfate, tetradecyl sulfate, pentadecyl vitriol and cetyl sulfate.In like manner, C12-C18 aliphatic acid polyethenoxy ether refers to that carbonatoms is the aliphatic acid polyethenoxy ether of 12-18.
In the present invention, under preferable case, when described tensio-active agent can be the mixture of polyoxyethylene sorbitan fatty acid ester (tween) and/or Span (sapn), and when described tensio-active agent is the mixture of polyoxyethylene sorbitan fatty acid ester (tween) and Span (sapn), the weight ratio of polyoxyethylene sorbitan fatty acid ester and Span can be 0.5-2:1, be preferably 1-2:1, be more preferably 1:1.
According to the present invention, the grease of described lightweight oil can be proportion be 0.78-0.97, under preferable case, described lightweight oil be selected from kerosene, solar oil, solvent oil and white oil any one or multiple.
According to the present invention, in certain embodiment, in described disperser composition, described antioxidant is thiocarbamide, described tensio-active agent is Span (sapn), and with 100 parts per weight dispersing agent for benchmark, the content of described lightweight oil is 95-99 weight part, the content of described tensio-active agent is 0.9-2 weight part, and the content of described oxidation inhibitor is 0.1-3 weight part; The kerosene of described lightweight oil to be proportion be 0.78-0.85; In polyacrylamide granulation process, adopt the disperser composition of this embodiment, the polyacrylamide gel particles that can granulation be made further complete keeps high efficiency dispersion and no longer bonds, and significantly can reduce the compound action of mechanical shearing and thermal-oxidative degradation in actual granulation operations process to the impact of polymericular weight, thus the high molecular weight polyacrylamide of molecular weight 3,000 ten thousand can be prepared further.
Present invention also offers the application of above-mentioned disperser composition in polyacrylamide granulation process.In polyacrylamide granulation process, the disperser composition that the application of the invention provides, the polyacrylamide gel particles that makes granulation complete keeps high efficiency dispersion and no longer bonds, and the compound action that significantly can reduce mechanical shearing and thermal-oxidative degradation in actual granulation operations process is on the impact of polymericular weight.
The invention will be further described by the following examples, but protection scope of the present invention is not limited in these embodiments.
In the following Examples and Comparative Examples, the performance for product adopts following methods to test:
1, solid content is measured according to the method specified in GB12005.2-89;
2, dissolution time is measured according to the method specified in GB12005.8-89;
3, intrinsic viscosity is measured according to the method specified in GB12005.1-89;
4, formula M=([η]/K) 1/ α is adopted to calculate the viscosity-average molecular weight of polymkeric substance, wherein K=4.75 × 10 according to the method specified in GB12005.10-92
-3, α=0.80, [η] is intrinsic viscosity;
5, the content of insolubles in aqueous solutions of polymers is measured according to Shengli Oilfiedld Subsidiary Company Of China Petrochemical Corporation company standard Q/SH1020 1572-2006;
6, polymers soln apparent viscosity: the solution with the salt solution of salinity 10000mg/L, polymkeric substance being made into 1500mg/L, at 95 DEG C of temperature, shearing rate 7.34s
-1, use Brookfield viscometer determining.
In the following Examples and Comparative Examples, polyoxyethylene sorbitan fatty acid ester (tween) is purchased from Tianjin Fu Chen chemical reagents corporation, Span (sapn) is purchased from Tianjin recovery fine chemistry industry institute, C6-C18 alkyl polyoxyethylene ether sulfate is all purchased from Tianjin company of recovery fine chemistry industry institute, C6-C18 alkyl-sulphate is all purchased from Chemical Reagent Co., Ltd., Sinopharm Group, polyoxyethylene nonylphenol ether is purchased from Tianjin recovery fine chemistry industry institute, aliphatic acid polyethenoxy ether is purchased from Tianjin recovery fine chemistry industry institute, used thiourea process in the present invention, organic amine, wilkinite, phytic acid and derivative thereof, dithiocarbamate salt, mercaptobenzothiazole and derivative thereof and boric acid and derivative thereof are all purchased from Chemical Reagent Co., Ltd., Sinopharm Group.
Embodiment 1
By 90 weight part proportions be the mixture of the kerosene of 0.78,3 parts by weight of polyoxyethylene sorbitan fatty acid esters (tween) and Span (sapn) (wherein, the weight ratio of polyoxyethylene sorbitan fatty acid ester and Span is 1:1), 7 weight part thiocarbamides join in reactor stir 4 hours, prepare functional type granulating from colloid dispersion agent F1.The relevant physical and chemical performance parameter of this oil base functional type granulating from colloid dispersion agent F1 is as shown in table 1.
In polyacrylamide colloid granulation process, the oil base functional type granulating from colloid dispersion agent F1 of above-mentioned formulated is joined dispersion agent fuel tank, is evenly ejected on polyacrylamide particle through conveying pipeline by injection pump, can continuous seepage be realized.
Embodiment 2
Be the kerosene of 0.85 by 99 weight part proportions, 0.9 parts by weight of polyoxyethylene sorbitan fatty acid ester (tween), 0.1 weight part mercaptobenzothiazole join in reactor stir 4 hours, prepare functional type granulating from colloid dispersion agent F2; The relevant physical and chemical performance parameter of this oil base functional type granulating from colloid dispersion agent F2 is as shown in table 1.
In polyacrylamide colloid granulation process, the oil base functional type granulating from colloid dispersion agent F2 of above-mentioned formulated is joined dispersion agent fuel tank, is evenly ejected on polyacrylamide particle through conveying pipeline by injection pump, can continuous seepage be realized.
Embodiment 3
Be the kerosene of 0.8 by 95 weight part proportions, 2 weight part Spans (sapn), 3 weight part thiocarbamides join in reactor stir 4 hours, prepare functional type granulating from colloid dispersion agent F3; The relevant physical and chemical performance parameter of this oil base functional type granulating from colloid dispersion agent F3 is as shown in table 1.
In polyacrylamide colloid granulation process, the oil base functional type granulating from colloid dispersion agent F3 of above-mentioned formulated is joined dispersion agent fuel tank, is evenly ejected on polyacrylamide particle through conveying pipeline by injection pump, can continuous seepage be realized.
Embodiment 4
Be solar oil, 3 weight part polyoxyethylene nonylphenol ethers, the 7 weight part N of 0.84 by 90 weight part proportions, N-dimethyl thiourea joins in reactor and stirs 4 hours, prepares functional type granulating from colloid dispersion agent F4; The relevant physical and chemical performance parameter of this oil base functional type granulating from colloid dispersion agent F4 is as shown in table 1.
In polyacrylamide colloid granulation process, the oil base functional type granulating from colloid dispersion agent F4 of above-mentioned formulated is joined dispersion agent fuel tank, is evenly ejected on polyacrylamide particle through conveying pipeline by injection pump, can continuous seepage be realized.
Embodiment 5
Be the white oil of 0.88 by 99 weight part proportions, 0.9 weight part six alkyl-sulphate, 0.1 weight part sodium bentonite join in reactor stir 4 hours, prepare functional type granulating from colloid dispersion agent F5; The relevant physical and chemical performance parameter of this oil base functional type granulating from colloid dispersion agent F5 is as shown in table 1.
In polyacrylamide colloid granulation process, the oil base functional type granulating from colloid dispersion agent F5 of above-mentioned formulated is joined dispersion agent fuel tank, is evenly ejected on polyacrylamide particle through conveying pipeline by injection pump, can continuous seepage be realized.
Embodiment 6
Be the solvent oil of 0.97,5 parts by weight of fatty acid Soxylat A 25-7,10 weight part N by 85 weight part proportions, N, N ', N ' ,-tetramethyl thiourea joins in reactor and stirs 4 hours, prepares functional type granulating from colloid dispersion agent F6; The relevant physical and chemical performance parameter of this oil base functional type granulating from colloid dispersion agent F6 is as shown in table 1.
In polyacrylamide colloid granulation process, the oil base functional type granulating from colloid dispersion agent F6 of above-mentioned formulated is joined dispersion agent fuel tank, is evenly ejected on polyacrylamide particle through conveying pipeline by injection pump, can continuous seepage be realized.
Embodiment 7
By 88 weight part proportions be the solar oil of 0.86,6 weight part six alkyl polyoxyethylene ether sulfates and octadecyl sulfate (wherein, the weight ratio of six alkyl polyoxyethylene ether sulfates and octadecyl sulfate is 1:1) parts by weight of fatty acid Soxylat A 25-7,6 weight part phytic acid join in reactor and stir 4 hours, prepare functional type granulating from colloid dispersion agent F7; The relevant physical and chemical performance parameter of this oil base functional type granulating from colloid dispersion agent F7 is as shown in table 1.
In polyacrylamide colloid granulation process, the oil base functional type granulating from colloid dispersion agent F7 of above-mentioned formulated is joined dispersion agent fuel tank, is evenly ejected on polyacrylamide particle through conveying pipeline by injection pump, can continuous seepage be realized.
Embodiment 8
Be the solvent oil of 0.78 by 95 weight part proportions, 2.8 weight part Steareth vitriol, 2.2 weight part N-ethyl thioureas join in reactor stir 4 hours, prepare functional type granulating from colloid dispersion agent F8; The relevant physical and chemical performance parameter of this oil base functional type granulating from colloid dispersion agent F8 is as shown in table 1.
In polyacrylamide colloid granulation process, the oil base functional type granulating from colloid dispersion agent F8 of above-mentioned formulated is joined dispersion agent fuel tank, is evenly ejected on polyacrylamide particle through conveying pipeline by injection pump, can continuous seepage be realized.
Comparative example 1
Identical with the method that embodiment 1 prepares disperser composition, institute's difference is not add antioxidant thiourea in this preparation method, and prepared functional type granulating from colloid dispersion agent is F9; The relevant physical and chemical performance parameter of this functional type granulating from colloid dispersion agent F9 is as shown in table 1.
When polyacrylamide colloid granulation, the functional type granulating from colloid dispersion agent F9 of above-mentioned formulated is joined dispersion agent fuel tank, is evenly ejected on polyacrylamide particle through conveying pipeline by injection pump, can continuous seepage be realized.
Comparative example 2
Identical with the method that embodiment 1 prepares disperser composition, institute's difference be in this preparation method by 80 weight part proportions be 0.8 kerosene, 8 parts by weight of polyoxyethylene sorbitan fatty acid esters (tween) and Span (sapn) mixture (wherein, the weight ratio of polyoxyethylene sorbitan fatty acid ester and Span is 1:1), 12 weight part thiocarbamides join in reactor, prepared functional type granulating from colloid dispersion agent is F10; The relevant physical and chemical performance parameter of this functional type granulating from colloid dispersion agent F10 is as shown in table 1.
When polyacrylamide colloid granulation, the functional type granulating from colloid dispersion agent F10 of above-mentioned formulated is joined dispersion agent fuel tank, is evenly ejected on polyacrylamide particle through conveying pipeline by injection pump, can continuous seepage be realized.
Comparative example 3
Identical with the method that embodiment 8 prepares disperser composition, institute's difference be in this preparation method by 84 weight part proportions be 0.78 solvent oil, 6 weight part Steareth vitriol, 8 weight part N-ethyl thioureas and 2 weight parts waters join in reactor, prepare functional type granulating from colloid dispersion agent F11; The relevant physical and chemical performance parameter of this functional type granulating from colloid dispersion agent F11 is as shown in table 1.
When polyacrylamide colloid granulation, the functional type granulating from colloid dispersion agent F11 of above-mentioned formulated is joined dispersion agent fuel tank, is evenly ejected on polyacrylamide particle through conveying pipeline by injection pump, can continuous seepage be realized.
Table 1
By embodiment 1-8 compared with comparative example 1-3, use oil base functional type colloidal dispersant of the present invention, in polyacrylamide colloid granulation, although the dispersion agent that oil base functional type colloidal dispersant prepared by Application Example 1-8 makes the solid content of the polyacrylamide particle produced and Comparison study example prepare makes the solid content of the polyacrylamide particle produced similar, but oil base functional type granulating from colloid dispersion agent prepared by Application Example 1-8 makes the molecular weight of the polyacrylamide particle produced raise, insolubles content significantly reduces and dissolution time also has shortening by a relatively large margin, such as, for embodiment 1 and comparative example 1, compared with comparative example 1, the molecular weight of embodiment 1 improves 4.87 percentage points, insolubles content decreases 0.18 percentage point, and dissolution time shortens 38 minutes.
Show thus, in polyacrylamide granulation process, the application of the invention oil base functional type granulating from colloid dispersion agent, can reduce the impact of compound action on polymericular weight of mechanical shearing and thermal-oxidative degradation in operating process.And more superior be the high molecular weight polyacrylamide utilizing this oil base functional type granulation dispersion agent can produce molecular weight 3,000 ten thousand, and product property is stablized, and impurity is few, good water solubility.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (9)
1. a disperser composition, it is characterized in that, this disperser composition contains lightweight oil, tensio-active agent and antioxidant, and with the disperser composition of 100 weight parts for benchmark, the content of described lightweight oil is 85-99 weight part, the content of described tensio-active agent is 0.9-5 weight part, the content of described antioxidant is 0.1-10 weight part, and described antioxidant is one or more in thiourea process, organic amine, wilkinite, phytic acid and derivative thereof, dithiocarbamate salt, mercaptobenzothiazole and derivative thereof and boric acid and derivative thereof.
2. disperser composition according to claim 1, wherein, with the disperser composition of 100 weight parts for benchmark, the content of described lightweight oil is 90-99 weight part, the content of described tensio-active agent is 0.9-3 weight part, and the content of described antioxidant is 0.1-7 weight part.
3. disperser composition according to claim 1 and 2, wherein, the grease of described lightweight oil to be proportion be 0.78-0.97.
4. disperser composition according to claim 3, wherein, described lightweight oil be selected from kerosene, solar oil, solvent oil and white oil any one or multiple.
5. disperser composition according to claim 1, described tensio-active agent be in C6-C18 alkyl polyoxyethylene ether sulfate, C6-C18 alkyl-sulphate, polyoxyethylene nonylphenol ether, C12-C18 aliphatic acid polyethenoxy ether, polyoxyethylene sorbitan fatty acid ester and Span any one or multiple.
6. disperser composition according to claim 1, wherein, described thiourea process is N-dimethyl thiourea, N, N, N ', N ', one or more in-tetramethyl thiourea, N-methylthiourea and N-ethyl thiourea; Described organic amine is one or more in the primary amine of C2-C18 straight or branched, secondary amine and tertiary amine; Described wilkinite is calcium-base bentonite or sodium bentonite; Described phytic acid and derivative are one or more in phytic acid, sodium phytate and POTASSIUM PHYTATE; Described mercaptobenzothiazole and derivative thereof are mercaptobenzothiazole or mercaptobenzothiazole sodium; Described boric acid and derivative are boric acid or Sodium Tetraborate.
7. a disperser composition, it is characterized in that, this disperser composition contains lightweight oil, tensio-active agent and antioxidant, and with 100 parts per weight dispersing agent for benchmark, the content of described lightweight oil is 95-99 weight part, the content of described tensio-active agent is 0.9-2 weight part, and the content of described oxidation inhibitor is 0.1-3 weight part; The kerosene of described lightweight oil to be proportion be 0.78-0.85, described tensio-active agent is polyoxyethylene sorbitan fatty acid ester and/or Span, and described antioxidant is thiourea process and/or mercaptobenzothiazole.
8. disperser composition according to claim 7, wherein, described tensio-active agent is polyoxyethylene sorbitan fatty acid ester and Span, and the weight ratio of polyoxyethylene sorbitan fatty acid ester and Span is 0.5-2:1, is preferably 1-2:1.
9. the application of the disperser composition in claim 1-8 described in any one in polyacrylamide granulation process.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1498677A (en) * | 2002-11-05 | 2004-05-26 | 吹 | Dispersing agent for granulating from colloid |
| CN101111526A (en) * | 2005-01-28 | 2008-01-23 | 施托克豪森有限责任公司 | Water-soluble or water-swellable polymers, particularly water-soluble or water-swellable copolymers made of acrylamide and at least one ionic comonomer having a low residual monomer concentration |
| CN101508933A (en) * | 2009-03-18 | 2009-08-19 | 淄博吉孚消防科技有限公司 | High molecular polymer lubricant oil dispersing auxiliary and method of producing the same |
-
2013
- 2013-09-16 CN CN201310421095.XA patent/CN104448352A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1498677A (en) * | 2002-11-05 | 2004-05-26 | 吹 | Dispersing agent for granulating from colloid |
| CN101111526A (en) * | 2005-01-28 | 2008-01-23 | 施托克豪森有限责任公司 | Water-soluble or water-swellable polymers, particularly water-soluble or water-swellable copolymers made of acrylamide and at least one ionic comonomer having a low residual monomer concentration |
| CN101508933A (en) * | 2009-03-18 | 2009-08-19 | 淄博吉孚消防科技有限公司 | High molecular polymer lubricant oil dispersing auxiliary and method of producing the same |
Non-Patent Citations (1)
| Title |
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| 倪玉伟: "中深度凝胶调剖技术研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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