CN104250339A - Acrylamide copolymer and its preparation method and use - Google Patents

Acrylamide copolymer and its preparation method and use Download PDF

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CN104250339A
CN104250339A CN 201310269908 CN201310269908A CN104250339A CN 104250339 A CN104250339 A CN 104250339A CN 201310269908 CN201310269908 CN 201310269908 CN 201310269908 A CN201310269908 A CN 201310269908A CN 104250339 A CN104250339 A CN 104250339A
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杜凯
祝纶宇
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中国石油化工股份有限公司
中国石油化工股份有限公司北京化工研究院
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Abstract

The invention discloses an acrylamide copolymer and its preparation method and use. The acrylamide copolymer comprises a structural unit A, a structural unit B, a structural unit C and a structural unit D. The structural unit A is shown in the formula (1). The structural unit B is shown in the formula (2). The structural unit C is shown in the formula (3). The structural unit D is shown in the formula (4). The acrylamide copolymer has viscosity-average molecular weight of 5-15 millions. The acrylamide copolymer has the advantages of high drag reduction efficiency, high salt tolerance, high shearing resistance, good water solubility, good compatibleness with a clay stabilizing agent and low damage on stratum.

Description

一种丙烯酰胺系共聚物及其制备方法和应用 Acrylamide copolymer and its preparation method and application

技术领域 FIELD

[0001] 本发明涉及一种丙烯酰胺系共聚物、丙烯酰胺系共聚物的两种制备方法以及所述丙烯酰胺系共聚物作为减阻剂的应用。 [0001] The present invention relates to acrylamide-based copolymer, prepared by two methods acrylamide copolymer is an acrylamide-based copolymer and the use as drag reducing agents.

背景技术 Background technique

[0002] 作为非常规油气资源利用的典型代表--页岩气(油)资源的开采已经成为全球非常规油气资源领域的一场革命,目前页岩气的开发与利用已成为世界各国着重关注与发展的重点技术。 [0002] As a typical representative of unconventional oil and gas resources utilization - shale gas (oil) resources has become a revolution in the world of unconventional oil and gas resources, the development and utilization of shale gas has become the world focus on focus on technology and development. 由于页岩气藏等极致密油气藏具有渗透率极低(一般小于〇. 5mD)、压裂压力高、易造成地层伤害的特点。 Because extremely dense, like shale gas reservoirs with very low permeability (typically less than square. 5 mD), high fracture pressure, easily causing formation damage characteristics. 必须采用"减阻水(滑溜水)压裂"工艺开采。 We must be "slickwater (slick water) fracturing" process mining.

[0003] "减阻水(滑溜水)压裂"是水力压裂的一种。 [0003] "slickwater (slick water) fracturing" is a hydraulic fracturing. 与目前常规压裂体系(改性瓜胶交联体系)相比,减阻水(滑溜水)压裂不是依靠高粘性胶体携砂,而是以高的泵注排量携砂,实现将储层压裂成网状裂缝的最终目的。 Compared with the current conventional fracturing system (modified guar gum crosslinking system), slickwater (slick water) instead of relying on the high viscosity fracturing sand carrying colloid, but in the high injection pump displacement carrying sand, achieve reservoir fracture splitting into a laminate web of the ultimate goal. 与常规压裂体系相比,减阻水(滑溜水)压裂在成本上有较大优势的同时对地层的伤害较小。 Compared with conventional fracturing systems drag water (slick water) fracturing have a greater advantage in terms of cost, while the smaller formation damage.

[0004] 减阻水压裂液核心助剂为水基减阻剂,在实际施工中,水基减阻剂的加入克服工作液在管线中的摩擦阻力,保证了泵注排量的提高,使压力最大限度地作用于压开地层和延伸地层裂缝,目前可用作水基减阻剂的主要有胍胶及其衍生物、纤维素衍生物、丙烯酰胺类聚合物。 [0004] slickwater fracturing fluid is water-based core DRA aid, in actual construction, the water-based drag reducing agent was added to overcome the frictional resistance of the working fluid in a pipeline, to ensure the improvement of pumping displacement, to maximize the pressure acting on the pressure of the formation and the extension formation fractures open, the current is used as the water-based DRA major guar gum and derivatives thereof, cellulose derivatives, acrylamide-based polymer.

[0005] 目前,采用胍胶、纤维素及其衍生物作为减阻水压裂中的减阻剂一定程度上提高了泵注排量、降低了管线中的摩擦阻力(US5697444,US5271466),但仍无法满足减阻水压裂的要求,主要由于上述生物高分子存在以下缺点:(1)降阻性能有限;(2)由于胍胶、纤维素及其衍生物具有少量不溶物极易对地层造成伤害;(3)溶解时间较长。 [0005] Currently, the use of guar gum, cellulose and its derivatives as slickwater fracturing improved to some extent on the DRA pumping displacement, reduce the frictional resistance line (US5697444, US5271466), but slickwater fracturing still unable to meet the requirements, mainly due to the presence of the biopolymer following drawbacks: limited (1) drop resistance properties; (2) due guar gum, cellulose and its derivatives with a small amount of insoluble material was easy formation damage; long (3) dissolution time.

[0006] 在减阻水压裂施工中,多采用丙烯酰胺类聚合物(部分水解丙烯酰胺或阴离子型丙烯酰胺共聚物)作为减阻水压裂中的降阻剂,很大程度上提高了泵注排量、降低了管线中的摩擦阻力,但作为页岩气藏减阻水压裂的减阻剂使用,存在以下重要缺陷:(1)为了减少压裂过程中的"水敏效应",抑制页岩中粘土组分的水化膨胀,必须在压裂液中加入小分子阳离子粘土稳定剂(如氯化钾、四甲基氯化铵等)。 [0006] In the slickwater fracturing, the use of acrylamide-based polymer (partially hydrolyzed acrylamide or anionic acrylamide copolymer) as slickwater fracturing reducing agent, greatly improves pumping displacement, reducing the frictional resistance of the line, but as shale gas reservoirs slickwater fracturing drag reducing agent, the following important disadvantages: (1) in order to reduce the fracturing process "water sensitive effect" , inhibition of shale hydration swelling clay component must be added a small molecule cationic clay stabilizer (such as potassium chloride, tetramethyl ammonium chloride, etc.) in the fracturing fluid.

[0007] 部分水解丙烯酰胺或阴离子型丙烯酰胺共聚物及其乳液产品与上述粘土稳定剂的配伍性较差,极易产生沉淀;(2)部分水解丙烯酰胺或阴离子型丙烯酰胺共聚物作为页岩气藏减阻水压裂的减阻剂使用抗滤失性能较差,此种减阻水压裂液极易滤失到地层当中;(3)耐温抗盐性较差,尤其在高矿化度高二价离子含量条件下,分子结构不稳定,降阻效果下降较快。 [0007] partially hydrolyzed anionic acrylamide or acrylamide copolymers and an emulsion product compatibility with the above-described clay stabilizer is poor, easy to produce precipitate; (2) acrylamide or a partially hydrolyzed anionic acrylamide copolymer as p gas reservoirs slickwater fracturing fluid loss using an anti-drag reducer performance is poor, such slickwater fracturing fluid loss into the formation which can easily filtered; (3) temperature and salt resistance is poor, especially in high the divalent ion content of high salinity conditions, the molecular structure is unstable, the reduction in resistance decreased rapidly.

[0008] 专利US20090298721A1公开了一种减阻水压裂液的配方:向1000加仑去离子水中加入0.5加仑丙烯酰胺-co-丙烯酸共聚物(FR-56™)等阴离子型丙烯酰胺共聚物乳液作为减阻剂,再加入〇. 15wt%碳酸钠或EDTA-2Na等络合剂,该减阻水压裂液具有优良的降阻性能,室内平均降阻率达到65. 0%,对耐盐性(尤其对二价钙离子的耐受性)有了一定程度的改善,但该种减阻水压裂体系作为页岩气减阻水压裂液使用,存在如下问题:(1)与粘土稳定剂(如氯化钾、四甲基氯化铵)和醇的配伍性较差,极易产生沉淀;(2)抗滤失性能较差, 此种减阻水压裂液极易滤失到地层当中;(3)在实际施工中"水敏效应"显著;(4)极易产生"水堵";(5)耐高速剪切性能差,在高速剪切作用下不稳定,降阻率下降很快;(6)耐温耐盐性较差,尤其在高矿化度高二价离子含量条件下,分子结构不稳定 [0008] Patent No. US20090298721A1 discloses one kind of formulations slickwater fracturing fluids: 1,000 gallons to 0.5 gallons of deionized water was added -co- acrylamide acrylic acid copolymer (FR-56 ™) and other anionic acrylamide copolymer emulsion as DRA, added square. 15wt% sodium carbonate or complexing agent such as EDTA-2Na, slickwater fracturing fluid which has excellent barrier properties drop, the average indoor resistance reduction rate 65.0%, of salt tolerance (especially resistance to divalent calcium ions) has been improved to some extent, but such systems as slickwater fracturing shale slickwater fracturing fluid used, the following problems: (1) stabilizing clay agent (such as potassium chloride, tetramethyl ammonium chloride) and an alcohol of poor compatibility, easy to produce precipitate; poor (2) anti fluid loss properties, such slickwater fracturing fluid leakoff to easily among formation; (3) "water-sensitive effect" in the actual construction; and (4) easy to produce "water blocks"; (5) high shear resistance performance is poor, unstable at high speed shearing action, the rate of reduction in resistance decreased rapidly; (6) temperature salt is poor, especially in conditions of high divalent ion content of high salinity, unstable molecular structure 降阻效果下降较快; (7)不易降解,容易对极度致密的页岩地层造成永久型伤害,污染地层,继而影响油气产量。 Reduction in resistance decreased rapidly; (7) against degradation, likely to cause permanent damage to the extremely tight shale formations, formation damage, thereby affecting the oil and gas production.

[0009] 与上述部分水解丙烯酰胺或阴离子型丙烯酰胺共聚物相比,阳离子型高分子量的丙烯酰胺共聚物作为减阻剂(US356226,US3868328)也有报道,此种结构共聚物与与粘土稳定剂(如KC1)相容性较好,与醇的配伍性较好,"水敏效应"不显著,不易"水堵",但此类降阻剂大分子也不易降解,容易对致密的页岩造成永久性伤害。 [0009] Compared with the above-described partially hydrolyzed anionic acrylamide or acrylamide copolymers, cationic acrylamide copolymer of molecular weight as a drag reducing agent (US356226, US3868328) has also been reported that such copolymers with the structure and clay stabilizer (e.g., the KC1) good compatibility, good compatibility with alcohols, the "water-sensitive" effect is not significant, easily "water blocks", but also easily degradable macromolecules such reducing agent, readily densified shales cause permanent damage.

[0010] 因此,如何进一步提高减阻剂的耐高速剪切性能,提高压裂液对粘土的抑制性及抗滤失性,提高在高盐高剪切条件下的减阻率的稳定性同时具有可降解性,减少聚合物对地层的伤害仍是一个尚未解决的问题。 [0010] Therefore, how to further improve the resistance to high shear drag reducer performance, improved inhibition of clay and anti fluid loss fracturing fluid, improve the stability of drag reduction at high shear conditions while high salt has biodegradability, reducing the polymer formation damage is still an unresolved issue.

发明内容 SUMMARY

[0011] 本发明的目的是克服现有技术的缺陷,提供一种减阻率高、耐盐性高、抗高剪切性能好、水溶性好、与粘土稳定剂具有良好配伍性、具有可降解性且对地层伤害小的丙烯酰胺系共聚物及其制备方法和应用。 [0011] The object of the present invention to overcome the deficiencies of the prior art, there is provided a drag reducing rate, high salt tolerance, good resistance to high shear performance, good water solubility, and clay stabilizer with good compatibility, having degradation and formation damage small acrylamide copolymer and its preparation method and application.

[0012] 本发明提供一种丙烯酰胺系共聚物,其中,所述丙烯酰胺系共聚物含有结构单元A、结构单元B、结构单元C和结构单元D,其中,所述结构单元A为式(1)所示的结构单元, 所述结构单元B为式(2)所示的结构单元,所述结构单元C为式(3)所示的结构单元,所述结构单元D为式(4)所示的结构单元;且以所述丙烯酰胺系共聚物中结构单元的总摩尔数为基准,所述结构单元A的含量为5-95摩尔%,所述结构单元B的含量为2. 5-90摩尔%,所述结构单元C的含量为0. 5-90摩尔%,所述结构单元D的含量为0. 0001-1摩尔% ;所述丙烯酰胺系共聚物的粘均分子量为500万-1500万; [0012] The present invention provides a copolymer of acrylamide, wherein the acrylamide copolymer comprising structural units A, structural units B, C structural unit and the structural unit D, where the structural unit A of the formula ( a structural unit represented by 1) the structural units, the structural unit B represented by the formula (2), the structural unit of the structural unit C of the formula (3), the structural unit D of the formula (4) structural units represented; and the total number of moles of said acrylamide copolymer of the structural unit as a reference, the content of the structural unit a is from 5 to 95 mol%, the content of the structural unit B is 2.5 -90% content by mole, the structural unit C is 0. 5-90 mol%, the content of the structural unit D 0. 0001-1% by mole; viscosity of said copolymer is an acrylamide-based average molecular weight of 500 Wan 15 million;

[0013] [0013]

Figure CN104250339AD00081

[0014] 其中,和R12'各自独立地为Η或者C1-C4的烷基;R3为C1-C4的直链或支链亚烷基;R 4、R5、R6、R8、R9、R n、R13、R14、R13'和R14'各自独立地为C1-C4的烷基成。 [0014] wherein and R12 'are each independently Η or C1-C4 alkyl group; R3 is a linear or branched alkylene of C1-C4 alkyl; R 4, R5, R6, R8, R9, R n, R13, R14, R13 'and R14' are each independently an alkyl group into a C1-C4. 为C1-C20的直链或支链亚烷基;X-为Cl-,Br_,Γ,SCN-, A straight-chain or branched alkylene group of C1-C20; X-is Cl-, Br_, Γ, SCN-,

Figure CN104250339AD00082

[0015] 本发明还提供一种丙烯酰胺系共聚物的制备方法,该制备方法包括在烯烃的溶液聚合反应条件下,在引发剂存在下,使一种单体混合物在水中进行聚合反应,其中,所述单体混合物含有单体E、单体F、单体G和单体H,所述单体E为式(5)所示的单体,所述单体F 为式(6)所示的单体,所述单体G为式(7)所示的单体,所述单体Η为式(8)所示的单体,以所述单体混合物中单体的总摩尔数为基准,所述单体Ε的含量为5-95摩尔%,所述单体F的含量为2. 5-90摩尔%,所述单体G的含量为0. 5-90摩尔%,所述单体Η的含量为0. 0001-1 摩尔% ;所述溶液聚合反应的条件使得聚合反应后所得聚合物的粘均分子量为500万-1500 万, [0015] The present invention further provides a process for preparing an acrylamide-based copolymer, the method comprising preparing a solution in an olefin polymerization reaction conditions in the presence of an initiator, a monomer mixture of a polymerization reaction in water, wherein the monomer mixture containing the monomer E, monomer F, G monomers and monomer H, E is a monomer represented by the formula (5), F is the monomer of formula (6) monomer exemplified monomers, the monomer represented by the formula G (7), the monomer of formula Η (8), the total number of moles of monomers in the monomer mixture as a reference, the content of the monomer is 5-95 molar% Ε, the content of the monomer is 2. F 5-90 mol%, the content of the monomer G is 0. 5-90 mol%, of the Η said monomer content of 0. 0001-1% by mole; polymerization conditions such that the solution viscosity of the resulting polymer after polymerization average molecular weight of 5 million 15 million,

[0016] [0016]

Figure CN104250339AD00091

[0017] 其中,和R12'各自独立地为Η或者C1-C4的烷基;R3为C1-C4的直链或支链亚烷基;R 4、R5、R6、R8、R9、R n、R13、R14、R13'和R14'各自独立地为C1-C4的烷基;R lx为C1-C20的直链或支链亚烷基;X-为Cl-,Br_,Γ,SCN- [0017] wherein and R12 'are each independently Η or C1-C4 alkyl group; R3 is a linear or branched alkylene of C1-C4 alkyl; R 4, R5, R6, R8, R9, R n, R13, R14, R13 'and R14' are each independently a C1-C4 alkyl group; R lx is a linear or branched alkylene group of C1-C20; X-is Cl-, Br_, Γ, SCN-

Figure CN104250339AD00092

[0018] 此外,本发明还提供一种丙烯酰胺系共聚物的制备方法,该制备方法包括将水相和油相混合形成反相乳液,然后在乳液聚合反应条件下,在引发剂的存在下,将该反相乳液进行聚合反应,所述水相为含有单体混合物的水溶液,所述油相含有有机溶剂和乳化剂,其中,所述单体混合物含有单体E、单体F、单体G和单体H,所述单体E为上述式(5)所示的单体,所述单体F为上述式(6)所示的单体,所述单体G为上述式(7)所示的单体,所述单体Η 为上述式(8)所示的单体,以所述单体混合物中单体的总摩尔数为基准,所述单体Ε的含量为5-95摩尔%,所述单体F的含量为2. 5-90摩尔%,所述单体G的含量为0. 5-90摩尔%,所述单体Η的含量为0. 0001-1摩尔% ;所述乳液聚合反应的条件使得聚合反应后所得聚合物的粘均分子量为500万-1500万。 [0018] Further, the present invention also provides a process for preparing an acrylamide-based copolymer, which method comprises preparing the aqueous and oil phases mixed to form a reverse phase emulsion, and then the reaction under emulsion polymerization conditions in the presence of an initiator , the inverse emulsion polymerization reaction, the aqueous phase is an aqueous solution containing a monomer mixture, the oil phase contains an organic solvent and emulsifier, wherein the monomer mixture containing the monomer E, monomer F., single G monomers and body H, the E monomer is a monomer represented by the formula (5), F is the monomer is a monomer of formula G above (6) represented by the above formula ( 7) a monomer represented by the above-mentioned monomer is a monomer Η formula (8), the total moles of the monomer mixture of the monomers, the monomer content of 5 Ε -95 mol% of the monomer content of F 2 is 5-90 mol%, the content of the monomer G is 0. 5-90 mol%, the content of the monomer is 0. 0001-1 Η mol%; with the proviso that the viscosity of the emulsion polymerization of the resulting polymer after polymerization average molecular weight of 5 million 15 million.

[0019] 此外,本发明还提供了所述丙烯酰胺系共聚物作为减阻剂的应用。 [0019] Further, the present invention also provides the use of the acrylamide copolymer as a drag reducer.

[0020] 在本发明提供的所述丙烯酰胺系共聚物中,将含有偶氮基团的结构单元通过共聚的方法,引入到含有丙烯酰胺结构单元和阳离子单体结构单元的大分子链上,并且通过控制聚合条件得到适宜分子量的共聚物,使得该丙烯酰胺系共聚物具有自降解性,在较低的地层温度下(一般大于60°C)可以实现自降解,可降低对地层的伤害,同时该丙烯酰胺系共聚物在高盐高剪切条件下具有较高的减阻率,并且与粘土稳定剂(如KC1和NaCl)具有较高的配伍性。 [0020] acrylamide in the copolymer of this invention, a structural unit containing an azo group by copolymerization of the macromonomer chain into a structural unit containing an acrylamide monomer and a cationic structural unit, and by suitably controlling the polymerization conditions to obtain molecular weight of the copolymer, so that the acrylamide copolymer having from degradation, the formation at lower temperatures (typically greater than 60 ° C) can be achieved from degradation, it can reduce the damage to the formation, Meanwhile, the acrylamide copolymers have higher drag reduction in a high salt under high shear conditions, and with a clay stabilizer (e.g., KC1 and NaCl) has high compatibility. 从而得到本发明。 To obtain the present invention.

[0021] 而且,本发明的丙烯酰胺系共聚物在用作减阻剂时水不溶物含量明显较低;与助排剂(如甲醇)有较好的相容性。 [0021] Further, acrylamide copolymer of the present invention when used as drag reducer significantly lower content of water-insoluble matter; and drainage aid (e.g., methanol) have good compatibility.

[0022] 具体地,实施例1-6中制得的丙烯酰胺系共聚物的粘均分子量在500万-1500万; 在水中的不溶物含量仅为〇. 01重量% ;在2500rpm的剪切速率下,该聚合物在水/醇溶液不产生沉淀,可以完全溶解;将实施例1-6中制得的丙烯酰胺系共聚物溶于浓度为2重量%、4 重量%、8重量%、10重量%、12重量%的NaCl或KC1溶液中,将其配制成500mg/L和lOOOmg/ L的溶液,减阻率均可达到60%以上;在较低的地层温度(大于60°C)的条件下,该聚合物可进行自降解,对地层的伤害小于10%。 [0022] Specifically, 1-6 viscosity acrylamide copolymer prepared in Example 5,000,000 average molecular weight of 15 million; 2500rpm in the shear; insoluble content in the water is only 01 square wt%. at a rate of the polymer is not generated in the water / alcohol solution was precipitated, dissolved completely; Example 1-6 acrylamide copolymer obtained was dissolved in a concentration of 2 wt%, 4 wt%, 8 wt.%, 10 wt%, 12 wt% NaCl or KC1 solution, which was formulated as 500mg / L and lOOOmg / L solution, drag reduction can reach 60% or more; in the lower formation temperature (greater than 60 ° C) under the conditions, the polymer may be self-degradable, formation damage is less than 10%.

[0023] 此外,本发明提供的丙烯酰胺系共聚物的制备方法(溶液聚合法和反相乳液聚合法)具有简便且单体转化率高的优点。 [0023] In addition, preparation of an acrylamide-based copolymer of the present invention provides (inverse emulsion polymerization and solution polymerization method) is simple and high monomer conversion advantage.

[0024] 本发明的其他特征和优点将在随后的具体实施方式部分予以详细说明。 [0024] Other features and advantages of the present invention will be described in detail in a subsequent portion of the detailed description.

具体实施方式 detailed description

[0025] 以下对本发明的具体实施方式进行详细说明。 [0025] The following detailed description of specific embodiments of the present invention. 应当理解的是,此处所描述的具体实施方式仅用于说明和解释本发明,并不用于限制本发明。 It should be understood that the specific embodiments described herein are only to illustrate and explain the present invention and are not intended to limit the present invention.

[0026] (一)丙烯酰胺系共聚物 [0026] (a) acrylamide copolymer

[0027] 本发明提供一种丙烯酰胺系共聚物,其中,所述丙烯酰胺系共聚物含有结构单元A、结构单元B、结构单元C和结构单元D,其中,所述结构单元A为式(1)所示的结构单元,所述结构单元B为式(2)所示的结构单元,所述结构单元C为式(3)所示的结构单元,所述结构单元D为式(4)所示的结构单元;且以所述丙烯酰胺系共聚物中结构单元的总摩尔数为基准,所述结构单元A的含量可以为5-95摩尔%,优选为10-70摩尔%,更优选为50-70摩尔% ;所述结构单元B的含量为2. 5-90摩尔%,优选为5-60摩尔%,更优选为20-40摩尔% ; 所述结构单元C的含量为0. 5-90摩尔%,优选为5-30摩尔%,更优选为5-20摩尔%,所述结构单元D的含量为0. 0001-1摩尔%,优选为0. 001-0. 5摩尔%,更优选为0. 005-0. 2摩尔% ; 所述丙烯酰胺系共聚物的粘均分子量为500万-1500万,优选为500万-1000万, [0027] The present invention provides a copolymer of acrylamide, wherein the acrylamide copolymer comprising structural units A, structural units B, C structural unit and the structural unit D, where the structural unit A of the formula ( a structural unit represented by 1) the structural units, the structural unit B represented by the formula (2), the structural unit of the structural unit C of the formula (3), the structural unit D of the formula (4) structural units represented; and the total number of moles of said acrylamide copolymer of the structural unit as a reference, the content of the structural unit a may be 5 to 95 mol%, preferably 10 to 70 mol%, more preferably 50 to 70 mole%; content of the structural unit B is 2. 5-90 mol%, preferably 5 to 60 mol%, more preferably 20 to 40 mol%; the content of the structural unit C is 0. 5-90 mol%, preferably 5-30 mol%, more preferably 5 to 20 mol%, the content of the structural unit D 0. 0001-1% by mole, preferably 0. 001-0. 5 mol% , more preferably 0.5 mol%, 005-02;. the acrylamide copolymer viscosity-average molecular weight of 5 million 15 million, preferably from 5 million to 10 million,

[0028] [0028]

Figure CN104250339AD00111

[0029] 其中,Rp R2、R7、R12和R12'各自独立地为Η或者C1-C4的烷基,优选情况下,札和R 2各自独立地为Η或者甲基,R7为H,R12和R12'为甲基;R 4、R5、R6、R8、R9、R n、R13、R14、R13'和R14'各自独立地为C1-C4的烷基,优选为甲基;R 1(l为C1-C20的直链或支链亚烷基,优选情况下,R1(l为C1-C5的直链或支链亚烷基,更优选为亚甲基;R 3为C1-C4的直链或支链亚烷基, 优选为亚乙基(如,-CH2CH2-);X_为Cl_,&_,Γ,SCN_ [0029] wherein, Rp R2, R7, R12 and R12 'are each independently Η or a C1-C4 alkyl, Preferably, Sapporo and R 2 are each independently Η or methyl, R7 is H, R12 and R12 'is methyl; R 4, R5, R6, R8, R9, R n, R13, R14, R13' and R14 'are each independently a C1-C4 alkyl group, preferably a methyl group; R 1 (l is C1-C20 linear or branched alkylene, preferably, R1 (l is C1-C5 straight or branched chain alkylene group, more preferably a methylene group; R 3 is a C1-C4 linear or branched alkylene group, preferably an ethylene group (e.g., -CH2CH2 -); X_ is a Cl _, & _, Γ, SCN_

Figure CN104250339AD00112

优选为Cl_。 Preferably Cl_.

[0030] 本发明中,所述C1-C4的烷基的实例可以包括但不限于:甲基、乙基、正丙基、异丙基、正丁基、仲丁基、异丁基和叔丁基。 [0030] In the present invention, examples of the C1-C4 alkyl groups may include, but are not limited to: methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl and tert butyl.

[0031] 所述亚烷基是指烷烃失去两个氢原子后的残基,所述两个氢原子可以为同一个碳原子上的两个氢原子,也可以不同碳原子上的两个氢原子,可以是直链的,也可以是支链的,例如,所述亚乙基可以是_CH 2CH2-或-CH (CH3)-。 [0031] The alkylene group means a residue obtained by loss of two hydrogen atoms, an alkane, the two hydrogen atoms may be two hydrogen atoms on the same carbon atom, two hydrogen may be on different carbon atoms atoms, may be straight chain or may be branched, e.g., the ethylene may be _CH 2CH2- or -CH (CH3) -.

[0032] 本发明中,所述亚烷基可以是直链的,也可以是支链的。 [0032] In the present invention, the alkylene group may be linear, it may be branched. 所述C1-C20的直链或支链亚烷基的实例可以包括但不限于:亚甲基、亚乙基、亚正丙基、亚异丙基、亚正丁基、亚仲丁基、亚异丁基、亚叔丁基、亚正戊基、亚异戊基、亚叔戊基、亚新戊基、亚正己基、亚正庚基、 亚正辛基、亚正癸基、亚正十二烷基、亚十六烷基和亚二十烷基。 Examples of the C1-C20 linear or branched alkylene group may include, but are not limited to: methylene, ethylene, n-propylene, isopropylene, n-butylene, sec-butyl, isobutylene, tert-butylene, n-pentylene, ethylene isopentyl, tert-pentyl group alkylene, alkylene neopentyl, ethylene n-hexyl, n-heptyl ethylene, isopropylene, n-octyl, n-decyl alkylene, alkylene n-dodecyl, cetyl Asia and sub-eicosyl.

[0033] 本发明的发明人在研究中发现,由特定的结构单元A、结构单元B、结构单元C与结构单元D组成的丙烯酰胺系四元聚合物能取得极好的降阻效果。 [0033] The present inventors have found in the study, acrylamide tetrapolymers of specific structural units A, structural units B, C and the structural unit consisting of the structural unit D can achieve excellent reduction in resistance. 例如,优选地,当&和R 2 各自独立地为Η 或者甲基,R3 为亚乙基(-CH2CH2-),R7 为H,R4、R5、R6、R8、R9、R n、R12、R13、R14、 R12'、R13'和R14 '各自独立地为甲基;Γ为Cl' S卩,所述结构单元A为式(1)所示的结构单元,其中,&为Η或甲基,所述结构单元B为式(9)所示的结构单元,所述结构单元C为式(10)所示的结构单元,所述结构单元D为式(11)所示的结构单元, For example, preferably, when & and R 2 are each independently Η or a methyl group, R3 is ethylene (-CH2CH2 -), R7 is H, R4, R5, R6, R8, R9, R n, R12, R13 , R14, R12 ', R13' and R14 'are each independently methyl; Gamma] as Cl' S Jie structural units, the structural unit a represented by the formula (1), wherein & is Η or methyl, the structural unit B is a structural unit represented by the formula (9), the structural unit C of formula (10), the structural unit D of the formula (11) a structural unit,

[0034] [0034]

Figure CN104250339AD00121

[0035] 其中,R2为Η或者C1-C4的烷基,优选情况下,R2为Η或者甲基;R 3为C1-C4的直链或支链亚烷基,优选为亚乙基(如,-CH2CH2_) ;R1(I为C1-C20的直链或支链亚烷基,优选情况下,R1(l为C1-C5的直链或支链亚烷基,更优选为亚甲基。 [0035] wherein, R2 is Η or a C1-C4 alkyl, Preferably, R2 is Η or a methyl group; R 3 is a C1-C4 straight or branched chain alkylene group, preferably an ethylene group (e.g. , -CH2CH2_); R1 (I a C1-C20 linear or branched alkylene, preferably, R1 (l is C1-C5 straight or branched chain alkylene group, more preferably a methylene group.

[0036](二)溶液聚合法 [0036] (ii) a solution polymerization method

[0037] 此外,本发明还提供一种丙烯酰胺系共聚物的制备方法,该制备方法包括在烯烃的溶液聚合反应条件下,在引发剂存在下,使一种单体混合物在水中进行聚合反应,其中, 所述单体混合物含有单体E、单体F、单体G和单体H,所述单体E为式(5)所示的单体,所述单体F为式(6)所示的单体,所述单体G为式(7)所示的单体,所述单体Η为式(8)所示的单体,且以所述单体混合物中单体的总摩尔数为基准,所述单体Ε的含量为5-95摩尔%,优选为10-70摩尔%,更优选为50-70摩尔% ;所述单体F的含量为2. 5-90摩尔%,优选为5-60 摩尔%,更优选为20-40摩尔% ;所述单体G的含量为0. 5-90摩尔%,优选为5-30摩尔%,更优选为5-20摩尔%,所述单体Η的含量为0. 0001-1摩尔%,优选为0. 001-0. 5摩尔%,更优选为0. 005-0. 2摩尔% ;所述溶液聚合反应的条件使得聚合反应后所得聚 [0037] Further, the present invention also provides a process for preparing an acrylamide-based copolymer, the method comprising preparing a solution in an olefin polymerization reaction conditions in the presence of an initiator, a monomer mixture of a polymerization reaction in water monomer, wherein said monomer mixture comprises monomer E, monomer F, G monomers and monomer H, E is a monomer represented by the formula (5), F is the monomer of formula (6 ) monomer represented by the monomer represented by (7) the monomer of formula G, the monomer of formula Η (8 monomer shown), and to the monomer mixture of monomers reference to the total moles of the monomer Ε an amount of 5-95 mol%, preferably 10 to 70 mol%, more preferably 50-70 mol%; content of the monomer is 2. 5-90 F mol%, preferably 5 to 60 mol%, more preferably 20 to 40 mol%; content of the monomer G is 0. 5-90 mol%, preferably 5-30 mol%, more preferably 5 to 20 mol%, the content of the monomer is 0. 0001-1 Η mol%, preferably 0. 001-05 mol%, more preferably 0.5 mol%, 005-02;.. the solution polymerization after the polymerization reaction conditions such that the resulting poly 物的粘均分子量为500万-1500万,优选为500万-1000万; Viscosity average molecular weight of 5 million 15 million, preferably from 5 million to 10 million;

[0038] [0038]

Figure CN104250339AD00131

[0039] 其中,Rp R2、R7、R12和R12'各自独立地为Η或者C1-C4的烷基,优选情况下,札和R 2各自独立地为Η或者甲基,R7为H,R12和R12'为甲基;R 4、R5、R6、R8、R9、R n、R13、R14、R13'和R14'各自独立地为C1-C4的烷基,优选为甲基;R 1(l为C1-C20的直链或支链亚烷基,优选情况下,R1(l为C1-C5的直链或支链亚烷基,更优选为亚甲基;R 3为C1-C4的直链或支链亚烷基, 优选为亚乙基(如,-CH2CH2-);X_S I_,SCN_, [0039] wherein, Rp R2, R7, R12 and R12 'are each independently Η or a C1-C4 alkyl, Preferably, Sapporo and R 2 are each independently Η or methyl, R7 is H, R12 and R12 'is methyl; R 4, R5, R6, R8, R9, R n, R13, R14, R13' and R14 'are each independently a C1-C4 alkyl group, preferably a methyl group; R 1 (l is C1-C20 linear or branched alkylene, preferably, R1 (l is C1-C5 straight or branched chain alkylene group, more preferably a methylene group; R 3 is a C1-C4 linear or branched alkylene group, preferably an ethylene group (e.g., -CH2CH2 -); X_S I_, SCN_,

Figure CN104250339AD00132

优选为Cl_。 Preferably Cl_.

[0040] 根据本发明,所述聚合反应开始时,所述单体混合物的重量与水和单体混合物的总重量的比例为本领域技术人员所公知的各种比例,一般地,所述单体混合物的重量与水和单体混合物的总重量的比例可以为0. 05-0. 5 :1,优选为0. 15-0. 4 :1。 [0040] According to the invention, the start of the polymerization reaction, well known to those skilled in the weight ratio of the various ratios of the total weight of the monomer mixture and the monomer mixture of water present, in general, the single the weight ratio of the total weight of the monomer mixture and the aqueous mixture may be 0. 05-05: 1, preferably 0. 15-04: 1.

[0041] 根据本发明,所述引发剂可以为本领域各种引发剂。 [0041] According to the invention, the initiator may be present various initiators art. 例如,选自偶氮系引发剂和氧化还原系引发剂。 For example, selected from azo initiators and redox based initiators. 以所述单体混合物中单体的总摩尔数为基准,所述偶氮系引发剂的用量为0-10摩尔%,所述氧化还原系引发剂的用量为0-10摩尔%,且所述偶氮引发剂和氧化还原引发剂的总用量优选满足:所述引发剂的总用量为单体混合物中单体的总摩尔数的0· 0001-10 摩尔%。 In total moles of the monomer mixture of the monomers of the azo initiator in an amount of 0-10 mol%, the redox initiator used is 0-10 mol%, and the preferably a total amount of said azo initiators and redox initiators meet agent: the total initiator is used in an amount of total moles of monomers in the monomer mixture 0001-10 0.5 mol%.

[0042] 本发明中,优选地,所述偶氮系引发剂选自2,2' -偶氮二异丁基脒盐酸盐和/或2, 2' -偶氮二[2-(2-咪唑啉_2_丙烧)-二盐酸盐]。 [0042] In the present invention, preferably the azo initiator is selected from 2,2 '- azobis isobutyl amidine hydrochloride, and / or 2, 2' - azobis [2- (2 - propan-imidazoline _2_ burn) - dihydrochloride].

[0043] 所述氧化还原系引发剂包括氧化剂和还原剂,优选地,所述氧化剂与所述还原剂的摩尔比为0.5-3. 5:1,满足上述比例的条件下,所述氧化剂的用量可以为单体混合物中单体的总摩尔数的0. 0001-0. 01摩尔%,优选为单体混合物中单体的总摩尔数的0. 001-0. 008摩尔% ;优选情况下,所述氧化剂选自过硫酸铵、过硫酸钾、过硫酸钠和过氧化氢中的至少一种,进一步优选为过硫酸铵和/或过硫酸钾;所述还原剂的用量可以为单体混合物中单体的总摩尔数的〇. 0001-0. 005摩尔%,优选为单体混合物中单体的总摩尔数的0. 001-0. 004摩尔% ;所述还原剂可以为无机还原剂(助还原剂),优选地,所述无机还原剂为选自亚硫酸氢钠、亚硫酸钠、雕白粉、硫代硫酸钠、硫酸亚铁、保险粉、抗坏血酸和脲中的至少一种,进一步优选为亚硫酸氢钠和/或硫代硫酸钠。 [0043] The redox initiators include an oxidizing agent and a reducing agent, preferably, the molar ratio of the reducing agent and the oxidizing agent is 0.5-3 5: 1, under conditions satisfying the above ratio of the oxidizing agent It may be used in an amount of total moles of monomers in the monomer mixture 0001-001 0.5 mol%, preferably 001-0008 mol% of the total 0.5 moles of monomers in the monomer mixture;. preferably , the oxidizing agent is selected from ammonium persulfate, potassium persulfate, sodium persulfate and hydrogen peroxide, at least one, more preferably ammonium and / or potassium persulfate; the amount of reducing agent may be a monomer billion total moles of monomer mixtures 0001-0005 mol%, preferably 001-0004 mol% of the total 0.5 moles of monomers in the monomer mixture;... the inorganic reducing agent may be reduced to (co-reducing agent), preferably, the inorganic reducing agent selected from sodium bisulfite, sodium sulfite at least one, Rongalit, sodium thiosulfate, ferrous sulfate, sodium hydrosulfite, ascorbic acid and urea, and further preferably sodium hydrogen sulfite and / or sodium thiosulfate.

[0044] 在本发明中,需要特别指出地,所述单体Η在聚合过程中同时起到扩链剂的作用, 这是因为所述单体Η中的有两个双键基团可参与聚合反应,形似"架桥"。 [0044] In the present invention, it is necessary to point out, the monomer acts as a chain extender Η simultaneously during polymerization, since there are two double bonds of the monomer groups can participate in Η polymerization, the shape of "bridging."

[0045] 另外,本发明提供的丙烯酰胺系共聚物对地层的伤害降低,这可能是由于该聚合物中具有偶氮基团,易在较低的地层温度下(大于60°C )发生自降解反应。 [0045] Further, an acrylamide-based copolymer of the present invention provides a reduced formation damage, which may be due to the polymer having an azo group, easily at low formation temperatures (greater than 60 ° C) occurs from degradation reactions.

[0046] 根据本发明,所述溶液聚合反应还可以在各种助剂存在下进行,所述助剂可以选自螯合剂和其他助剂中的至少一种;以所述单体混合物中单体的总摩尔数为基准,所述螯合剂的用量为0-2摩尔%,优选为0. 0001-1摩尔%,进一步优选为0. 0001-0. 05摩尔%,所述其他助剂的用量可以为0-2摩尔%,优选为0. 0001-1摩尔%,进一步优选为0. 0001-0. 2摩尔% ;优选地,所述螯合剂和其他助剂的用量使得:以所述单体混合物中单体的总摩尔数为基准,所述助剂的用量为〇. 0001-4摩尔%。 [0046] According to the invention, the solution polymerization reaction may also be carried out in the presence of various adjuvants, the adjuvant may be selected from at least one chelating agent, and other auxiliary agent; the monomer mixture to a single the total moles of the body as a reference, the chelating agent in an amount of 0-2 mol%, preferably 0. 0001-1 mol%, more preferably 0. 0001-0 05 mol%, the other additives can be used in an amount of 0-2 mol%, preferably 0. 0001-1% by mole, more preferably 0.5 mol% 0001-02; preferably, the chelating agent and other additives used in an amount such that: in the the total moles of the monomer mixture of the monomers, an amount of the adjuvant billion. 0001-4 mol%.

[0047] 根据本发明,所述螯合剂可以为选自乙二胺四乙酸二钠(EDTA)、三乙二胺五乙酸、 柠檬酸、柠檬酸盐和聚羟基丙烯酸中的至少一种,进一步优选为EDTA、柠檬酸盐和三乙二胺五乙酸中的至少一种,所述柠檬酸盐可以为柠檬酸钾、柠檬酸钠、柠檬酸钙和柠檬酸铵等。 [0047] According to the invention, the chelating agent may be selected from disodium ethylenediaminetetraacetate (EDTA), at least one of triethylenediamine pentaacetic acid, citric acid, citrates, and acrylic acid polyhydroxy further preferably EDTA, citrate, and triethylenediamine pentaacetic acid in at least one of the citrate salt may be potassium citrate, sodium citrate, ammonium citrate, calcium citrate, and the like. [0048] 根据本发明,所述其他助剂可以为选自尿素、甲酸钠、异丙醇和次磷酸钠中的至少一种,优选为尿素和/或甲酸钠。 [0048] According to the invention, the other additives may be urea and / or urea selected from sodium formate, sodium formate, isopropyl alcohol and sodium hypophosphite at least one, preferably.

[0049] 本发明的发明人发现,在同时存在上述各种引发剂和助剂的条件下,溶液聚合法能够得到粘均分子量可控的丙烯酰胺系共聚物。 [0049] The present inventors found that, while the presence of the above initiators under conditions and auxiliaries, solution polymerization can be controlled viscosity average molecular weight acrylamide copolymer.

[0050] 根据本发明,所述溶液聚合反应的条件可以为本领域常规的条件。 [0050] According to the present invention, the condition of solution polymerization conditions may be conventional in the art. 例如,所述溶液聚合反应在惰性气体存在下进行,聚合反应条件可以包括:温度为0_50°C,时间为1-24小时,pH值为5-13 ;优选情况下,温度为4-45°C,时间为4-24小时,pH值为5-9。 For example, the solution polymerization reaction is carried out in the presence of an inert gas, polymerization conditions may include: a temperature 0_50 ° C, time 1 to 24 hours, pH = 5-13; Preferably, the temperature is 4-45 ° C, time is 4-24 hours, pH = 5-9. 所述pH值可以通过加入酸或碱进行调节,所述酸优选为无机酸,所述无机酸优选为盐酸、硫酸、磺酸、 硝酸和磷酸中的至少一种;所述碱可以是无机碱或有机胺类化合物,例如可以选自氢氧化钠、氢氧化钾、氨水、甲胺、乙胺、乙醇胺和三乙醇胺中的至少一种,优选为氢氧化钠。 The pH can be adjusted by addition of acid or base, the acid is preferably an inorganic acid, the inorganic acid is preferably at least one of hydrochloric acid, sulfuric acid, nitric acid and phosphoric acid; the base can be an inorganic base or an organic amine compound, for example, be selected from sodium hydroxide, at least one, preferably sodium hydroxide, potassium hydroxide, ammonia, methylamine, ethylamine, ethanolamine, and triethanolamine.

[0051] 本发明的发明人在研究中发现,采取下述条件能够进一步提高聚合物的分子量: 艮P,优选地,所述溶液聚合反应的过程包括依次进行的三个阶段:第一阶段的反应条件包括:温度为0-10°C,优选为4-10°C,时间为1-15小时,优选为3-10小时;第二阶段的反应条件包括:温度为15-30°C,优选为20-30°C,时间为3-8小时,优选为3-5小时;第三阶段的反应条件包括:温度为35-50°C,优选为35-45°C,时间为2-14小时,优选为2-12小时。 [0051] The inventors of the present invention found in the study, the following conditions can be further improved to take the molecular weight of the polymer: Gen P, preferably the solution polymerization process comprising three stages in sequence: the first stage reaction conditions include: a temperature of 0-10 ° C, preferably 4-10 ° C, to 15 hours, preferably 10 hours; the second stage reaction conditions comprise: a temperature of 15-30 ° C, preferably 20-30 ° C, the time is 3-8 hours, preferably 3-5 hours; the reaction conditions of the third stage comprising: a temperature of 35-50 ° C, preferably 35-45 ° C, the time is 2 14 hours, preferably 2-12 hours.

[0052] 此外,本发明的发明人在研究中发现,当选择特定的单体E、单体F、单体G和单体Η进行反应时,能够进一步提高所得的聚合物的降阻效果。 [0052] Further, the present inventors found that in the study, when selecting a specific monomer E, monomer F., G monomers and reacted monomers Η possible to further improve the reduction in resistance of the resulting polymer. 例如,优选地,当&和R2各自独立地为Η 或者甲基,R3 为亚乙基(-CH2CH2-),R7 为H,R4、R5、R6、R4、R5、R 6、R8、R9、Rn、R12、R 13、 R14、R12'、R13'和R14 '各自独立地为甲基;Γ为Cl' S卩,所述单体E为式(5)所示的单体,其中,&为Η或甲基,所述单体F为式(12)所示的单体,所述单体G为式(13)所示的单体,所述单体Η为式(14)所示的单体, For example, preferably, and when the & Η R2 are each independently methyl or, R3 is ethylene (-CH2CH2 -), R7 is H, R4, R5, R6, R4, R5, R 6, R8, R9, Rn, R12, R 13, R14, R12 ', R13' and R14 'are each independently methyl; Gamma] as Cl' S Jie monomer, the monomer represented by the formula E (5), wherein & Η or methacrylic monomers, the monomer represented by the formula F (12), the monomer represented by the formula G (13) of the monomers Η of formula (14) shown in FIG. monomers,

[0053] [0053]

Figure CN104250339AD00151

[0054] 其中,R2为Η或者C1-C4的烷基,优选情况下,R2为Η或者甲基;R 3为C1-C4的直链或支链亚烷基,优选为亚乙基(如,-CH2CH2_) ;R1(I为C1-C20的直链或支链亚烷基,优选情况下,R1(l为C1-C5的直链或支链亚烷基,更优选为亚甲基。 [0054] wherein, R2 is Η or a C1-C4 alkyl, Preferably, R2 is Η or a methyl group; R 3 is a C1-C4 straight or branched chain alkylene group, preferably an ethylene group (e.g. , -CH2CH2_); R1 (I a C1-C20 linear or branched alkylene, preferably, R1 (l is C1-C5 straight or branched chain alkylene group, more preferably a methylene group.

[0055] (三)反相乳液聚合法 [0055] (c) Inverse Emulsion

[0056] 此外,本发明还提供一种丙烯酰胺系共聚物的制备方法,该制备方法包括将水相和油相混合形成反相乳液,然后在乳液聚合反应条件下,在引发剂的存在下,将该反相乳液进行聚合反应,所述水相为含有单体混合物的水溶液,所述油相含有有机溶剂和乳化剂,其中,所述单体混合物含有单体E、单体F、单体G和单体H,所述单体E为上述式(5)所示的单体,所述单体F为上述式(6)所示的单体,所述单体G为上述式(7)所示的单体,所述单体Η为上述式(8)所示的单体,且以所述单体混合物中单体的总摩尔数为基准,所述单体E 的含量为5-95摩尔%,优选为10-70摩尔%,更优选为50-70摩尔% ;所述单体F的含量为2. 5-90摩尔%,优选为5-60摩尔%,更优选为20-40摩尔% ;所述单体G的含量为0. 5-90摩尔%,优选为5-30摩尔%,更优选为5-20摩尔%,所述单体Η的含量为0. [0056] Further, the present invention also provides a process for preparing an acrylamide-based copolymer, which method comprises preparing the aqueous and oil phases mixed to form a reverse phase emulsion, and then the reaction under emulsion polymerization conditions in the presence of an initiator , the inverse emulsion polymerization reaction, the aqueous phase is an aqueous solution containing a monomer mixture, the oil phase contains an organic solvent and emulsifier, wherein the monomer mixture containing the monomer E, monomer F., single G monomers and body H, the E monomer is a monomer represented by the formula (5), F is the monomer is a monomer of formula G above (6) represented by the above formula ( 7) a monomer represented by the above-described monomer Η is a monomer represented by the formula (8), and the total moles of the monomer mixture of the monomers, the content of the monomer E is 5-95 mol%, preferably 10 to 70 mol%, more preferably 50-70 mol%; content of the monomer is 2. F 5-90 mol%, preferably 5 to 60 mol%, more preferably 20-40 mol%; content of the monomer G is 0. 5-90 mol%, preferably 5-30 mol%, more preferably 5 to 20 mol%, the content of the monomer Η is 0. 0001-1摩尔%,优选为0. 001-0. 5摩尔%,更优选为0. 005-0. 2摩尔% ;所述聚合反应的条件使得聚合反应后所得聚合物的粘均分子量为500万-1500万,优选为500万-1000万;式(5)-式(8)所示单体的选择与前文描述相同,在此不再赘述。 0001-1 mol%, preferably 0. 001-05 mol%, more preferably 0.5 mol%, 005-02;.. The polymerization conditions such that the viscosity of the resulting polymer after polymerization average molecular weight of 500 Wan 15 million, preferably from 5 million to 10 million; of formula (5) - represented by the formula (8) the choice of monomers and the foregoing description the same, are not repeated here.

[0057] 根据本发明,所述水相为含有单体混合物的水溶液。 [0057] According to the invention, the aqueous phase is an aqueous solution containing the monomer mixture. 所述单体混合物的重量与水和单体混合物的总重量的比例的选择与前文描述相同,此处不做赘述。 The weight ratio of water to the total weight of the monomer mixture and the monomer mixture is the same as selecting the foregoing description is not repeated here.

[0058] 根据本发明,对所述水相和油相的重量比例没有特别的限制,只要使所述水相与油相充分混合形成反相乳液即可,优选情况下,所述水相和油相的重量比例为1 :〇. 1-2,进一步优选为1 :〇· 3-0. 8。 [0058] According to the present invention, there is no particular limitation on the weight ratio of the aqueous phase and oil phase, the aqueous phase as long as the mixed oil phase inverse emulsion can be formed, preferably the case, and the aqueous phase oil phase weight ratio is 1: 1-2 billion, more preferably 1: square-3-08.

[0059] 根据本发明,所述有机溶剂可以为本领域各种用于乳液聚合的与水互不相容的非极性或极性小的有机溶剂,例如可以为甲苯、二甲苯、己烷、环己烷、正庚烷、异构石蜡、异构烷烃、汽油、煤油和白油中的至少一种,优选情况下,所述有机溶剂为选自甲苯、二甲苯、正庚烷、异构烷烃、环己烷和煤油中的至少一种。 Incompatible with water, a non-polar or small polar organic solvent [0059] According to the present invention, the organic solvent may be used in various emulsion polymerization art, for example, toluene, xylene, hexane , cyclohexane, n-heptane, isoparaffin, isoparaffins, gasoline, kerosene, white oil, and at least one, preferably, the organic solvent is selected from toluene, xylene, n-heptane, iso paraffins, at least one of cyclohexane and kerosene.

[0060] 根据本发明,所述油相含有有机溶剂和乳化剂。 [0060] According to the present invention, the oil phase contains an organic solvent and emulsifiers. 对所述有机溶剂的用量没有特别的要求,可以在较宽的范围内变动,只要所述有机溶剂与乳化剂混合形成油相即可,优选情况下,以所述乳液的总重量为基准,所述有机溶剂的用量可以为10-60重量%,进一步优选为20-35重量%。 The amount of the organic solvent is not particularly required, may vary within a wide range, as long as the oil phase of the mixed organic solvent and emulsifiers is formed, Preferably, the total weight of the emulsion as a reference, the the amount of the organic solvent described later may be 10 to 60 wt%, more preferably 20-35 wt%.

[0061] 根据本发明,所述乳化剂可以为本领域各种用于乳液聚合的非离子型乳化剂,例如可以为失水山梨醇脂肪酸酯、烷基酚聚氧乙烯醚、异构醇聚氧乙烯醚、月桂醇聚氧乙烯醚、丙二醇脂肪酸酯、月桂醇聚醚、苄基酚氧聚氧乙烯醚、苯乙基酚聚氧乙烯醚、聚氧乙烯失水山梨醇脂肪酸脂、失水山梨醇脂肪酸酯环氧乙烷加成物、苄基二甲基酚聚氧乙烯醚、脂肪醇聚氧乙烯醚和脂肪胺聚氧乙烯醚中的至少一种。 [0061] According to the invention, the emulsifying agent may be used art various non-ionic emulsion polymerization, for example, as sorbitan fatty acid esters, polyoxyethylene alkylphenol ether, isomeric alcohols polyoxyethylene ethers, polyoxyethylene lauryl alcohol ether, propylene glycol fatty acid esters, laureth, benzyl phenoxy polyoxyethylene ether, phenethyl phenol polyoxyethylene ethers, polyoxyethylene sorbitan fatty acid ester, sorbitan fatty acid ester ethylene oxide adduct, benzyl dimethyl phenol polyoxyethylene ethers, polyoxyethylene ethers of fatty alcohols and polyoxyethylene fatty amine of at least one vinyl ether. 优选情况下,所述乳化剂选自失水山梨醇脂肪酸酯、聚氧乙烯失水山梨醇脂肪酸脂、壬基酚聚氧乙烯醚、辛基酚聚氧乙烯醚、苄基酚氧聚氧乙烯醚、苯乙基酚聚氧乙烯醚、异构十三醇聚氧乙烯醚、月桂醇聚氧乙烯醚和苄基二甲基酚聚氧乙烯醚中的至少一种,进一步优选为由上述两种或两种以上的乳化剂组成的亲水亲油平衡值为5-9的复合乳化剂,例如可以为失水山梨醇脂肪酸酯和壬基酚聚氧乙烯醚。 Preferably, the emulsifier is selected from sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene nonylphenol ether, polyoxyethylene octylphenol ether, polyoxyethylene phenoxy benzyl vinyl ether, phenethyl phenol polyoxyethylene ether, iso-tridecyl alcohol polyoxyethylene ether, polyoxyethylene lauryl ether and benzyl dimethyl phenol polyoxyethylene ether of at least one, and more preferably by the above of two or more of the emulsifiers hydrophilic-lipophilic balance value of the emulsifier 5-9, for example, sorbitan fatty acid esters, and polyoxyethylene nonylphenyl ether.

[0062] 根据本发明,对所述乳化剂的用量没有特别地限定,可以在较宽的范围内变动,只要所述乳化剂与所述有机溶剂混合形成油相即可,优选情况下,以所述乳液的总重量为基准,所述乳化剂的用量可以为1-15重量%,进一步优选为2-10重量%。 [0062] According to the present invention, the amount of the emulsifier is not particularly limited, and may vary within a wide range, as long as the oil phase emulsifier with the organic solvent mixture is formed, Preferably, in the the total weight of the emulsion described later as a reference, the emulsifying agent may be used in an amount of 1-15 wt%, more preferably 2-10 wt%.

[0063] 根据本发明,所述引发剂可以为本领域中各种引发剂,所述引发剂的选择与前文描述相同,此处不再赘述。 [0063] According to the invention, the initiator may be present in a variety of art initiators, the initiator and the same selection agent foregoing description is not repeated here.

[0064] 本发明中,优选情况下,可先将偶氮系引发剂加入水相,再与油相混合形成反相乳液,然后将反相乳液与氧化还原系引发剂接触,通过氧化还原引发剂引发聚合反应。 [0064] In the present invention, preferably, the first azo initiator may be added to the aqueous phase, and then mixed with the oil phase inverse emulsion is formed, and then the inverse emulsion and redox initiator contacting through redox initiator polymerization initiator.

[0065] 根据本发明,所述聚合反应还可以在各种助剂存在下进行,所述助剂可以选自螯合剂和其他助剂中的至少一种,所述助剂的选择与前文描述相同,此处不再赘述。 [0065] According to the present invention, the polymerization reaction may also be carried out in the presence of various adjuvants, the adjuvant may be selected from at least one chelating agent, and other additives, said additives selected with the foregoing description the same is not repeated here.

[0066] 根据本发明中,对所述螯合剂的加料时机没有特别的要求,只要使螯合剂与金属离子发生螯合作用以使对共聚物起到稳定化作用即可,可以选择在水相加入或者在油相中加入,优选情况下,为了使螯合剂更充分的发挥稳定作用,可以选择在水相中加入螯合剂。 [0066] According to the present invention, there is no particular restriction on the addition timing of the chelating agent, as long as the chelating agent and metal ion chelation occurs to make copolymers can play a stabilizing effect may be selected in the aqueous phase was added in the oil phase was added or, preferably, the chelating agent to more fully stabilizing role, the option to add a chelating agent in the aqueous phase. [0067] 根据本发明,所述螯合剂的选择与前文描述相同,此处不再赘述。 [0067] According to the invention, the chelating agent is the same as selecting the foregoing description is not repeated here.

[0068] 同样,本发明的发明人发现,在同时存在上述各种引发剂和助剂的条件下,反相乳液聚合法能够得到粘均分子量可控且溶解速度快的丙烯酰胺系共聚物。 [0068] Similarly, the present inventors found that, while the above-mentioned various conditions in the presence of initiators and additives, can be obtained by Inverse Emulsion viscosity average molecular weight and fast dissolution rate of the controlled acrylamide copolymer.

[0069] 根据本发明,所述乳液聚合反应的条件可以为本领域常规的条件。 [0069] According to the invention, the emulsion polymerization conditions may be conventional in the field conditions. 所述聚合反应条件的选择与前文描述相同,此处不再赘述。 The same as the foregoing description of the selected polymerization conditions, and is not repeated here.

[0070] 同样,本发明的发明人在研究中发现,采取下述条件能够进一步提高聚合物的分子量:即,优选地,所述乳液聚合反应的过程包括依次进行的两个阶段:第一阶段的反应条件包括:温度为0_20°C,优选为5-10°C,时间为1-15小时,优选为1-5小时;第二阶段的反应条件包括:温度为20-50°C,优选为25-45°C,时间为2-8小时,优选为2-5小时。 [0070] Similarly, the present inventors found that in the study, the following conditions take molecular weight polymers can be further improved: That is, preferably, the emulsion polymerization process comprises two stages carried out sequentially: a first stage the reaction conditions include: temperature 0_20 ° C, preferably 5-10 ° C, to 15 hours, preferably 1-5 hours; the second stage reaction conditions comprise: a temperature of 20-50 ° C, preferably of 25-45 ° C, the time is 2-8 hours, preferably 2-5 hours.

[0071] 根据本发明,该方法还包括在所述聚合反应后将所述聚合反应所得产物与转相剂接触,以使所述聚合反应所得产物在压裂液应用中快速在水中溶解即可。 [0071] According to the invention, the method further comprising the polymerization reaction after the polymerization reaction product obtained with phase inversion agent into contact, so that the resulting polymerization reaction product can be quickly dissolved in water in the fracturing fluid applications . 所述转相剂可以为本领域用于乳液聚合的各种转相剂,只要使所述聚合反应所得产物的水溶性增加即可, 例如可以为聚氧乙烯失水山梨醇脂肪酸酯、壬基酚聚氧乙烯醚、辛基酚聚氧乙烯醚、苄基酚聚氧乙烯醚、苯乙基酚聚氧乙烯醚、异构十醇聚氧乙烯醚、异构i^一醇聚氧乙烯醚、异构十三醇聚氧乙烯醚和脂肪胺聚氧乙烯醚的非离子型乳化剂中的至少一种,优选情况下,所述转相剂为选自聚氧乙烯失水山梨醇脂肪酸脂、异构十醇聚氧乙烯醚、异构i^一醇聚氧乙烯醚、异构十三醇聚氧乙烯醚、壬基酚聚氧乙烯醚和辛基酚聚氧乙烯醚中的至少一种。 The phase transfer agent may be present a variety of phase-transfer agent for the emulsion polymerization art, so long as the polymerization reaction the resulting product can increase the water solubility, for example, sorbitan fatty acid esters polyoxyethylene, nonyl phenol polyoxyethylene ether, polyoxyethylene octylphenol ether, benzyl phenol polyoxyethylene ether, phenethyl phenol polyoxyethylene ether, isomeric ten alcohol polyoxyethylene ether, a heterogeneous i ^ polyoxyethylene nonionic emulsifiers ether, iso-tridecyl alcohol ethoxylates and fatty amine ethoxylates of at least one, preferably, the phase transfer agent is selected from polyoxyethylene sorbitan fatty acid aliphatic, ten isomeric alcohol polyoxyethylene ether, a heterogeneous i ^ alcohol polyoxyethylene ether, iso-tridecyl alcohol polyoxyethylene ether, polyoxyethylene nonylphenol ether and polyoxyethylene octylphenol ether least one kind.

[0072] 根据本发明,对所述转相剂的用量没有特别的要求,只要可以使所述聚合反应所得产物在压裂液应用中快速在水中溶解即可,所述转相剂的用量使得:以所述乳液的总重量为基准,所述转相剂的用量可以为〇. 5-10重量%,优选为1-4重量%。 [0072] According to the present invention, no special requirements for the amount of phase transfer agent, the polymerization reaction may be as long as the resulting product can be quickly dissolved in water in the fracturing fluid applications, the phase transfer agent in an amount such that : based on the total weight of the emulsion as a reference, the phase transfer agent is used in an amount of 5-10 wt% may be square, preferably 1 to 4 wt%.

[0073] 此外,本发明的发明人在研究中发现,当选择特定的单体E、单体F、单体G和单体Η进行反应时,能够进一步提高所得的聚合物的降阻效果。 [0073] Further, the present inventors found that in the study, when selecting a specific monomer E, monomer F., G monomers and reacted monomers Η possible to further improve the reduction in resistance of the resulting polymer. 例如,优选地,当&和R2各自独立地为Η 或者甲基,R3 为亚乙基(-CH2CH2-),R7 为H,R4、R5、R6、R8、R9、R n、R12、R13、R14、R12'、 R13'和R14'各自独立地为甲基;Γ为Cl'即,所述单体E为式(5)所示的单体,其中,札为Η或甲基,所述单体F为式(12)所示的单体,所述单体G为式(13)所示的单体,所述单体Η 为式(14)所示的单体,式(5)、式(12)-式(14)所示单体的选择与前文描述相同,在此不再赘述。 For example, preferably, and when the & Η R2 are each independently methyl or, R3 is ethylene (-CH2CH2 -), R7 is H, R4, R5, R6, R8, R9, R n, R12, R13, R14, R12 ', R13' and R14 'are each independently methyl; Gamma] as Cl' i.e., the monomer represented by the formula E (5) a monomer, wherein XY is Η or methyl, the F is a monomer represented by the formula (12) is a monomer represented by the formula G (13), the monomers of the monomer represented by the formula Η (14), the formula (5) , of formula (12) - is selected before for formula (14) described in the same monomer, it is not repeated here.

[0074] 此外,本发明还提供了所述丙烯酰胺系共聚物在减阻剂中的应用。 [0074] Further, the present invention also provides the use of the acrylamide copolymer in the drag reducing agent. 采用本发明提供的所述丙烯酰胺系共聚物作为压裂液减阻剂,可以获得高而稳定的减阻率,具体的应用方法为本领域技术人员所熟知的技术。 Employing the acrylamide copolymer of the present invention provides a fracturing fluid drag reducing agent, a high and stable rate of drag reduction, the specific application methods well known to those skilled in the art.

[0075] 以下将通过实施例对本发明进行详细描述。 [0075] will be described in detail by way of examples of the present invention. 应当理解的是,此处所描述的具体实施方式仅用于说明和解释本发明,并不用于限制本发明。 It should be understood that the specific embodiments described herein are only to illustrate and explain the present invention and are not intended to limit the present invention.

[0076] 特性粘数[η]根据GB12005. 1-89聚丙烯酰胺特性粘数测定方法进行测定;粘均分子量按照公式Mv= ([ilVK)1^,其中Κ=4.5Χ1(Γ3, α=0.80进行计算;溶解时间按GB12500. 8-89进行测定(样品质量均按样品内纯聚合物质量计),测得的粉末状样品溶解时间均小于20min,乳液样品溶解时间均小于5min ;分子结构及结构单元的组成采用IR光谱和13C-NMR测定;水不溶物含量按SY/T5862-1993测定;室内减阻率按SY/T6376-2008测定。 [0076] The intrinsic viscosity [[eta]] was measured according to GB12005 1-89 polyacrylamide intrinsic viscosity measurement method;. Viscosity average molecular weight according to the equation Mv = ([ilVK) 1 ^, wherein Κ = 4.5Χ1 (Γ3, α = 0.80 calculated; dissolution time was measured (pure polymer mass of the sample within the sample are by mass) by GB12500 8-89, measured powder samples dissolution time is less than 20min, emulsion sample dissolution time of less than 5min;. molecular structure composition Determination and structural units and by the IR spectrum 13C-NMR; water insoluble matter by SY / T5862-1993 determination; drag reduction rate measured by the indoor SY / T6376-2008.

[0077] 下述实施例中式(15)所示的单体Ml和式(18)所示的单体M3购自Sigma-Aldrich 公司,除此之外,除非特殊说明,实施例、对比例和测试例中用到的试剂等均为市售品。 [0077] Examples of the monomer of formula (15) and Ml monomer of formula (18) represented by the following embodiment M3 purchased from Sigma-Aldrich Corporation, in addition, unless otherwise noted, embodiments and comparative the reagents used in the test cases are commercially available.

[0078] 实施例1 [0078] Example 1

[0079] 本实施例用于说明本发明提供的溶液聚合法制备丙烯酰胺系共聚物。 [0079] The present embodiment used in the solution polymerization of acrylamide-based copolymer of the present invention is provided to illustrate the preparation.

[0080] 室温下,将4. 26g的丙烯酰胺(AM)、74. 68g的式(15)所示的Ml单体、29. 95g的双丙酮丙烯酰胺和1. 16g的式(16)所示的M2单体(根据JP08217755A中实施例1记载的方法制备,以下相同),加入到聚合瓶中,加入去离子水623. 62g,搅拌使单体完全溶解,并搅拌均匀。 The [0080] room temperature, 4. 26g of acrylamide (AM), Ml 74 monomers of formula (15) in 68g of diacetone acrylamide, 29. 95g and the formula (16) 1. 16g of the monomer M2 illustrated (prepared according to the method of Example 1 according to JP08217755A, hereinafter the same), was added to the polymerization bottle was added deionized water 623. 62g, and stirred to completely dissolve the monomers, and stir. 分别向烧瓶中加入1重量%的EDTA水溶液5. 5g,1重量%的2, 2'-偶氮二异丁基脒盐酸盐水溶液2. lg,加入0. 1重量%的亚硫酸氢钠溶液1. lg,尿素0. 12g,充分搅拌使其混合均匀。 5. 5g, 1% by weight of 2, 2'-azobis isobutyl amidine hydrochloride aqueous solution of 1 wt% aqueous solution of EDTA were added to the flask 2. lg, sodium bisulfite was added 0.1% by weight solution 1. lg, urea 0. 12g, sufficiently stirred to mix uniformly. 用10重量%的氢氧化钠溶液调节pH至7.5。 PH was adjusted to 7.5 with 10 wt% sodium hydroxide solution. 控制体系初始温度至4°C,通氮气除氧30分钟后,加入1重量%过硫酸铵水溶液0. 45g,并继续通氮除氧20分钟。 The initial temperature control system to 4 ° C, the deoxygenated nitrogen for 30 minutes, 1 wt% aqueous solution of ammonium persulfate 0. 45g, nitrogen and oxygen was continuously for 20 minutes. 将反应器密闭,保持在4°C,反应8小时后,将温度升至20°C后反应5小时,然后将温度升至45°C反应2 小时,将得到的胶状产物取出,经造粒、干燥、粉碎即可获到丙烯酰胺系共聚物P1。 The reactor was sealed and kept at 4 ° C, the reaction for 8 hours, the temperature was raised to 20 ° C after the reaction for 5 hours, and then the temperature was raised to 45 ° C for 2 hours, the resulting gum product is removed by making granulated, dried and pulverized to get acrylamide copolymer P1.

[0081] 对P1进行各种测定,IR光谱中,1660cm-1和1635cm-1处分别出现归属于酰胺基的酰胺I带吸收峰(c=0伸缩振动)和酰胺II带吸收峰(NH弯曲振动),在1546(^'1449(^' 1364CHT 1处出现双丙酮丙烯酰胺C=0吸收峰,在1430CHT1处出现CN的伸缩振动吸收峰; 1170CHT 1出现了M2单体CH3-C-CH3骨架振动的特征伸缩振动峰,2923、2852〇1^处出峰分别归属于-CH 2-、-CH3的CH伸缩振动,1467CHT1出峰归属于-CH2-、-CH 3的CH弯曲振动, 可以确定得到的共聚物分子具有式(17)所示的结构,通过黏度法测得其黏均分子量Mv为820万,单体转化率为99. 9%以上。其中,式(17)以及Xl、x2、yi、y2、 Zl、ζ2和u仅表示出结构单元的类型和数目,而不表示结构单元的连接方式。χρ χ2、y2、ζι、ζ2和u的具体数值由投料量确定,分子结构式和结构单元的组成采用定量13C谱测定,其中,(Xl+x2) :(yi+y2): (z!+z2) :u=l :6 :2. [0081] Various measurement of P1, IR spectrum, 1660cm-1 and 1635cm-1 appeared at attributable to amide I band of the amide group absorption peak (c = 0 stretching vibration) and amide II absorption band (NH bending vibration), 1546 (^ '1449 (^' appears at 1364CHT 1 diacetone acrylamide, C = 0 absorption peak appears CN stretching vibration absorption peak at 1430CHT1; 1170CHT 1 appears M2 monomer CH3-C-CH3 backbone the stretching vibration of the vibration characteristics, 2923,2852〇1 ^ are attributed to peak at 2 -CH -, - CH stretching vibration is CH3, 1467CHT1 peak attributable to -CH2 -, - CH CH 3 bending vibration can be determined the resulting copolymer molecules having the structural formula (17), the viscosity as measured by obtaining the viscosity-average molecular weight Mv of 8,200,000, a monomer conversion of more than 99.9%., in the formula (17) and Xl, x2 , yi, y2, Zl, ζ2 and the type and number u shows only a structural unit, a structural unit without showing connection of .χρ χ2, specific values ​​y2, ζι, ζ2 and u is determined by the amount of raw materials and molecular structure the quantitative composition of the structural units 13C spectroscopy, wherein, (Xl + x2): (yi + y2): (z + z2!): u = l: 6: 2. 95 :0. 05〇[00821 95: 0 05〇 [00821

Figure CN104250339AD00181

[0083] [0083]

Figure CN104250339AD00191

式(17)。 Of formula (17).

[0084] 对比例1 [0084] Comparative Example 1

[0085] 按照实施例1的方法制备丙烯酰胺系共聚物,不同的是,不加入Ml单体、双丙酮丙烯酰胺和M2单体,将丙烯酰胺与相同摩尔数的(3-丙烯酰胺基-3-甲基)丁基三甲基氯化铵进行聚合反应,从而得到二元共聚物DP1,测得其粘均分子量M v为1345万。 [0085] acrylamide copolymer prepared as in Example 1, except that no addition of monomer Ml, M2 and diacetone acrylamide monomers, acrylamide and the same number of moles of (3-acrylamido-- 3-methyl) butyl-trimethylammonium chloride polymerization reaction, thereby obtaining a binary copolymer DP1, obtaining the measured viscosity average molecular weight M v of 13,450,000.

[0086] 实施例2 [0086] Example 2

[0087] 本实施例用于说明本发明提供的溶液聚合法制备丙烯酰胺系共聚物。 [0087] The present embodiment used in the solution polymerization of acrylamide-based copolymer of the present invention is provided to illustrate the preparation.

[0088] 将29. 85g的AM、5. 80g的式(18)所示的M3单体、25. 18g的双丙酮丙烯酰胺和〇. 46g的式(16)所示的M2单体加入到聚合瓶中,加入143. Olg去离子水,搅拌使单体完全溶解,分别向烧瓶中加入1重量%的EDTA水溶液4. 65g,加入1重量%偶氮二异丁基脒盐酸盐水溶液1. 23g,加入0. 1%亚硫酸氢钠溶液1. 15g,加入尿素0. llg,充分搅拌使其混合均匀。 [0088] 29. 85g of the monomers M3 AM, formula (18) shown in FIG. 5. 80g of diacetone acrylamide, 25. 18g and square. 46g of formula (16) was added to the monomer represented by M2 polymerization flask, 143. Olg of deionized water and stirred to complete dissolution of the monomers, of 1 wt% aqueous solution of EDTA were added to the flask 4. 65g, was added a 1 wt% aqueous solution of azobis isobutyl amidine hydrochloride . 23g, was added 0.1% sodium bisulfite solution 1. 15g, urea was added 0. llg, sufficiently stirred to mix uniformly. 用10重量%的氢氧化钠溶液调节pH至7.1。 PH was adjusted to 7.1 with 10 wt% sodium hydroxide solution. 控制体系初始温度至10°C,通氮气除氧30分钟后,加入1重量%过硫酸铵水溶液0. 45g,并继续通氮除氧10分钟。 Control system to an initial temperature 10 ° C, the deoxygenated nitrogen for 30 minutes, 1 wt% aqueous solution of ammonium persulfate 0. 45g, nitrogen and oxygen was continuously for 10 minutes. 将反应器密闭, 保持在l〇°C,反应3小时后,升温至30°C,反应3小时后,升温至35°C反应12小时,将得到的胶状产物取出,经造粒、干燥、粉碎即可获到丙烯酰胺系共聚物P2。 The reactor was sealed and kept at l〇 ° C, after the reaction for 3 hours, warmed to 30 ° C, after the reaction for 3 hours, warmed to 35 ° C for 12 hours, the resulting gummy product was taken out, granulated, dried , to get into the pulverized acrylamide copolymer P2.

[0089] 对P2进行各种测定,IR光谱中1660CHT1和1635CHT1处分别出现归属于酰胺基的酰胺I带吸收峰(C=0伸缩振动)和酰胺II带吸收峰(NH弯曲振动),在1546(^-^1449(^-^ 1364CHT 1处出现双丙酮丙烯酰胺C=0吸收峰,在1430CHT1处出现CN的伸缩振动吸收峰; 1170CHT 1出现了M2单体CH3-C-CH3骨架振动的特征伸缩振动峰,2923、2852〇1^处出峰分别归属于-CH 2-、-CH3的CH伸缩振动,1467CHT1出峰归属于-CH2-、-CH 3的CH弯曲振动, 可以确定得到的共聚物分子具有式(19)所示的结构,通过黏度法测得其黏均分子量Mv为530万,单体转化率为99. 9%以上。其中,式(19)以及Xl、x2、yi、y2、 Zl、ζ2和u仅表示出结构单元的类型和数目,而不表示结构单元的连接方式。χρ χ2、y2、ζι、ζ2和u的具体数值由投料量确定,分子结构式和结构单元的组成采用定量13C谱测定,其中,(Xl+x2) :(yi+y2): (Zi+z2) :u=l :0· 07 :0· 3 [0089] Various measurement of P2, and the IR spectrum 1660CHT1 1635CHT1 appears attributable to the amide group are amide I absorption band (C = 0 stretching vibration) and amide II absorption band (NH bending vibration), 1546 (^ - ^ 1449 (^ - ^ 1364CHT 1 appears at diacetone acrylamide, C = 0 absorption peak appears CN stretching vibration absorption peak at 1430CHT1; 1170CHT 1 appears M2 monomer CH3-C-CH3 skeleton vibration characteristics stretching vibration, 2923,2852〇1 ^ are attributed to peak at 2 -CH -, - CH stretching vibration is CH3, 1467CHT1 peak attributable to -CH2 -, - CH CH 3 bending vibration, the copolymer obtained can be determined molecule has the structure shown in formula (19), as measured by obtaining the viscosity viscosity-average molecular weight Mv of 5,300,000, a monomer conversion of more than 99.9%., in the formula (19) and Xl, x2, yi, only the type and number of the structural unit shown y2, Zl, ζ2 and u, and does not mean a structural unit connection .χρ χ2, y2, ζι, specific values ​​ζ2 and u is determined by the feeding amount of the molecular structure and the structural unit of the formula 13C spectroscopy quantitative composition wherein, (Xl + x2): (yi + y2): (Zi + z2): u = l: 0 · 07: 0 · 3 5 :0· 003。 5: 0 · 003.

[0090] [0090]

[0091] [0091]

Figure CN104250339AD00201

Figure CN104250339AD00211

[0092] 实施例3 [0092] Example 3

[0093] 本实施例用于说明本发明提供的溶液聚合法制备丙烯酰胺系共聚物。 [0093] The examples serve to illustrate the present solution polymerization of acrylamide-based copolymer of the present invention is provided.

[0094] 室温下,将25. 53g的甲基丙烯酰胺、51. 07g的式(18)所示的M3单体、6. 09g的双丙酮丙烯酰胺和〇. 〇〇2g的式(16)所示的M2单体加入到聚合瓶中,加入124. 04g去离子水, 搅拌使单体完全溶解,分别向烧瓶中加入1重量%的EDTA水溶液11. 63g,加入1重量%的2, 2'-偶氮二异丁基脒盐酸盐水溶液2. 13g,加入0. 1重量%亚硫酸氢钠溶液1. 13g,加入尿素0. 20g,充分搅拌使其混合均匀。 [0094] A mixture of monomers M3 methacrylamide 25. 53g of formula (18) shown in FIG. 51. 07g's, 6. 09g of diacetone acrylamide and square. 〇〇2g of formula (16) M2 monomer represented added to the polymerization flask, 124. 04g of deionized water and stirred to complete dissolution of the monomers were added 11. 63g 1 wt% aqueous solution of EDTA flask, 1 wt% of 2, 2 '- azobis isobutyl amidine hydrochloride aqueous solution of 2. 13g, was added 0.1 wt% sodium bisulfite solution 1. 13g, urea was added 0. 20g, sufficiently stirred to mix uniformly. 用10重量%的氢氧化钠溶液调节pH至7. 3。 PH was adjusted to 7.3 with 10 wt% sodium hydroxide solution. 控制体系初始温度至8°C,通氮气除氧30分钟后,加入1%过硫酸铵水溶液0. 4g,并继续通氮除氧10 分钟。 The initial temperature control system to 8 ° C, the deoxygenated nitrogen for 30 minutes, a 1% aqueous solution of ammonium persulfate 0. 4g, nitrogen and oxygen was continuously for 10 minutes. 将反应器密闭,保持在8°C,反应10小时后,升温至25°C,反应4小时后,升温至40°C 反应7小时,将得到的胶状产物取出,经造粒、干燥、粉碎即可获到丙烯酰胺系共聚物P3。 The reactor was sealed and kept at 8 ° C, after 10 hours, allowed to warm to 25 ° C, After 4 hours, the reaction was warmed to 40 ° C for 7 hours and the resulting gum product is removed, granulated, dried, to get into the pulverized acrylamide copolymer P3.

[0095] 对P3进行各种测定,IR光谱中,1660CHT1和1635CHT1处分别出现归属于酰胺基的酰胺I带吸收峰(C=0伸缩振动)和酰胺II带吸收峰(NH弯曲振动),在1546(^'1449(^' 1364CHT1处出现双丙酮丙烯酰胺C=0吸收峰在1430CHT1处出现CN的伸缩振动吸收峰, 1170CHT1出现了M2单体013-(>013骨架振动的特征伸缩振动峰,923,2852cm-1处出峰分别归属于-CH 2-、-CH3的CH伸缩振动,1467CHT1出峰归属于-CH2-、-CH 3的CH弯曲振动,可以确定得到的共聚物分子具有式(20)所示的结构,通过黏度法测得其黏均分子量Mv为650万, 单体转化率为99. 9%以上。其中,式(20)以及和u仅表示出结构单元的类型和数目,而不表示结构单元的连接方式。Xp x2、y2、zi、z2和u的具体数值由投料量确定,分子结构式和结构单元的组成采用定量13C谱测定,其中,(Xl+x2) :(yi+y2) :(Zl+z2): u=l :0· 88 :0· 12 :0· 00002。 [0095] Various measurement pair P3, the IR spectrum, 1660CHT1 and appeared at 1635CHT1 attributable to amide I band of the amide group absorption peak (C = 0 stretching vibration) and amide II absorption band (NH bending vibration), in 1546 (^ '1449 (^' appears at 1364CHT1 diacetone acrylamide C = 0 stretching vibration absorption peak of the absorption peak at CN 1430CHT1, 1170CHT1 appeared monomer M2 013 - (> 013 wherein the skeletal stretching vibration of the vibration, 923,2852cm-1 respectively at a peak attributed to -CH 2 -, - CH stretching vibration is CH3, 1467CHT1 peak attributable to -CH2 -, - CH CH 3 bending vibration can be determined to obtain a copolymer having the molecular formula ( structure 20 below), obtaining the viscosity as measured by viscosity average molecular weight Mv of 6,500,000, a monomer conversion of more than 99.9%. the number and type of structural units only shown wherein, the formula (20), and u and without connection .Xp x2 represents the structural units, the values ​​y2, zi, z2 and u is determined by the feeding amount, composition and molecular structure of the structural unit 13C quantitative spectroscopy, wherein, (Xl + x2) :( yi + y2): (Zl + z2): u = l: 0 · 88: 0 · 12: 0 · 00002.

[0096] [0096]

Figure CN104250339AD00221

[0097] 实施例4 [0097] Example 4

[0098] 本实施例用于说明本发明提供的反相乳液聚合法制备丙烯酰胺系共聚物。 [0098] The present examples serve to illustrate the present invention provides inverted Preparation acrylamide copolymer emulsion.

[0099] (1)将5. llg的甲基丙烯酰胺、74. 68g的式(15)所示的Ml单体、29. 95g的双丙酮丙烯酰胺和1. 16g的式(16)所示的M2单体加入到配置瓶中,加入180. 9g去离子水,搅拌使单体完全溶解,分别向烧瓶中加入1重量%的EDTA水溶液14. 61g,加入1重量%偶氮二异丁基脒盐酸盐水溶液1. 〇3g,加入尿素0. 15g,充分搅拌使其混合均匀,用10重量%的氢氧化钠溶液调节pH至7. 1,得到水相。 [0099] (1) 5. llg methacrylamide, 74 of Ml monomers of formula (15) in 68g of diacetone acrylamide, 29. 95g 1. 16g of the formula (16) shown in FIG. M2 monomers are added to the configuration of the bottle, 180. 9g deionized water was added and stirred to completely dissolve the monomers were added 14. 61g 1 wt% aqueous solution of EDTA flask, 1% by weight of azobis-isobutyl 1. 〇3g hydrochloride solution, urea is added 0. 15g, sufficiently stirred and mixed, adjusted with 10 wt% sodium hydroxide solution to pH 7.1 to obtain an aqueous phase.

[0100] (2)将失水山梨醇脂肪酸酯(span60,Sigma-Aldrich公司,以下相同)42. 29g,烧基酚聚氧乙烯醚(Igepal CA720,Sigma-Aldrich公司,以下相同)10g,193. 78g煤油混合成油相,并将步骤(1)中得到的水相加入到全部油相中,通过高速混匀形成反相乳液加入到反应器中。 [0100] (2) a sorbitan fatty acid ester (span60, Sigma-Aldrich Corporation, hereinafter the same) 42. 29g, burning phenol ethoxylates (Igepal CA720, Sigma-Aldrich Corporation, hereinafter the same) 10g, 193. 78g kerosene mixed with synthetic oils, and obtained in step (1) was added to the aqueous phase in all of the oil phase was added to the reactor by a high speed mixing invert emulsion is formed.

[0101] (3)控制体系初始温度5°C,通氮气除氧30分钟后,加入1重量%亚硫酸氢钠水溶液0. 25g,再加入1重量%过硫酸铵水溶液1. 0g并继续通氮除氧10分钟。 [0101] (3) control of the initial temperature of the system 5 ° C, deoxygenated nitrogen for 30 minutes, was added 1 wt% aqueous sodium bisulfite 0. 25g, was added 1 wt% aqueous ammonium persulfate solution was continuously and 1. 0g deoxygenated nitrogen for 10 minutes. 将反应器密闭,保持在5°C,反应5小时后,升温至45°C,反应2小时。 The reactor was sealed and kept at 5 ° C, the reaction for 5 hours, warmed to 45 ° C, reacted for 2 hours. 待反应温度冷却到室温后,加入22. 15g壬基酚聚氧乙烯醚(Sigma-Aldrich公司,以下相同),用80目滤布过滤得到乳液状产品。 After the reaction temperature was cooled to room temperature, 22. 15g nonylphenol ether (Sigma-Aldrich Corporation, hereinafter the same), with 80 mesh filter cloth to obtain an emulsion-like product. 将反相乳液产品用丙酮和甲醇混合溶剂沉淀出来后,即可获得丙烯酰胺系共聚物P4。 After the inverse emulsion product precipitated with a mixed solvent of acetone and methanol, to obtain an acrylamide copolymer P4.

[0102] 对P4进行各种测定,IR光谱中1660CHT1和1635CHT1处分别出现归属于酰胺基的酰胺I带吸收峰(C=0伸缩振动)和酰胺II带吸收峰(NH弯曲振动),在1546(^^1449(^-^ 1364CHT 1处出现双丙酮丙烯酰胺C=0吸收峰在1430CHT1处出现CN的伸缩振动吸收峰, 1170CHT 1出现了M2单体CH3-C-CH3骨架振动的特征伸缩振动峰,2923、2852〇1^处出峰分别归属于-CH 2-、-CH3的CH伸缩振动,1467CHT1出峰归属于-CH2-、-CH 3的CH弯曲振动。 可以确定得到的共聚物分子具有式(21)所示的结构,通过黏度法测得其粘均分子量Mv为850万,单体转化率为99. 9%以上。其中,式(21)以及Xl、x2、yi、y2、 Zl、ζ2和u仅表示出结构单元的类型和数目,而不表示结构单元的连接方式。χρ χ2、y2、ζι、ζ2和u的具体数值由投料量确定,分子结构式和结构单元的组成采用定量13C谱测定,其中,(Xl+x2) :(yi+y2): (z!+z2) :u=l :6 :2. 95 [0102] Various measurement pair P4, the IR spectrum and the 1635CHT1 1660CHT1 appear attributable to the amide group are amide I absorption band (C = 0 stretching vibration) and amide II absorption band (NH bending vibration), 1546 (1449 ^^ (^^ 1364CHT 1 appears at diacetone acrylamide, C = 0 stretching vibration absorption peak of the absorption peak at CN 1430CHT1, 1170CHT 1 shows the feature CH3-C-CH3 skeleton stretching vibration of the vibration monomer M2 peak 2923,2852〇1 ^ are attributed to peak at 2 -CH -, - CH stretching vibration is CH3, 1467CHT1 peak attributable to -CH2 -, - CH CH 3 bending vibration can be obtained copolymer molecules determined. having the structural formula (21), as measured by obtaining the viscosity viscosity average molecular weight Mv of 8,500,000, a monomer conversion of more than 99.9%., in the formula (21) and Xl, x2, yi, y2, ZL, only the type and number of the structural unit shown ζ2 and u, and does not mean a structural unit connection .χρ χ2, y2, specific values ​​ζι, ζ2 and u is determined by the feeding amount, composition and molecular structure of the structural unit using quantitative 13C spectroscopy, wherein, (Xl + x2): (yi + y2): (! z + z2): u = l: 6:. 2 95 0. 05〇 0. 05〇

[0103] [0103]

Figure CN104250339AD00241

[0104] 对比例2 [0104] Comparative Example 2

[0105] 按照实施例4的方法制备丙烯酰胺系共聚物,不同的是,不加入Ml单体、双丙酮丙烯酰胺和M2单体,将甲基丙烯酰胺与相同摩尔数的(3-丙烯酰胺基-3-甲基)丁基三甲基氯化铵进行聚合反应,从而得到二元共聚物DP2,测得其粘均分子量M v为925万。 [0105] acrylamide copolymer prepared as in Example 4, except that no addition of monomer Ml, M2 and diacetone acrylamide monomers, (3-acrylamide methacrylamide with the same number of moles of yl 3-methyl) butyl-trimethylammonium chloride polymerization reaction, thereby obtaining a binary copolymer DP2 is, obtaining the measured viscosity average molecular weight M v of 9,250,000.

[0106] 实施例5 [0106] Example 5

[0107] 本实施例用于说明本发明提供的反相乳液聚合法制备丙烯酰胺系共聚物。 DESCRIPTION The present invention provides the inverted acrylamide copolymer Preparation [0107] for the emulsion polymerization of the present embodiment.

[0108] (1)将35. 74g的甲基丙烯酰胺、5. 80g的式(18)所示的M3单体、25. 18g的双丙酮丙烯酰胺和〇.46g的式(16)所示的M2单体加入到配制瓶中,加入268. 72g去离子水, 搅拌使单体完全溶解,分别向烧瓶中加入1重量%的EDTA水溶液7. 63g,加入1重量%的2, 2'-偶氮二异丁基脒盐酸盐水溶液2. 03g,加入尿素0. 10g,充分搅拌使其混合均匀,用15 重量%的氢氧化钠溶液调节pH至7. 0,得到水相。 [0108] (1) the 35. 74g of methacrylamide, 5. 80g of formula (18) M3 monomer represented diacetone acrylamide 25. 18g and 〇.46g of formula (16) shown in FIG. the monomer is added to the formulation M2 flask, 268. 72g of deionized water and stirred to complete dissolution of the monomers were added 7. 63g 1 wt% aqueous solution of EDTA flask, 1% by weight of 2, 2'- azobis isobutyl amidine hydrochloride solution 2. 03g, urea was added 0. 10g, sufficiently stirred and mixed, the pH adjusted to 7.0 with 15 wt% sodium hydroxide solution, to obtain an aqueous phase.

[0109] (2)将失水山梨醇脂肪酸酯(span60) 23.21g,烷基酚聚氧乙烯醚(Ig印al CA720) 20g,129. 62g煤油混合成油相,并将步骤(1)中得到的水相全部加入到油相中,通过高速混匀形成反相乳液加入到反应器中。 [0109] (2) a sorbitan fatty acid ester (span60) 23.21g, alkylphenol ether (Ig printing al CA720) 20g, 129. 62g synthetic kerosene mixed phase, and in step (1) the obtained aqueous phase was added to the entire oil phase was added to the reactor by a high speed mixing invert emulsion is formed.

[0110] (3)控制体系初始温度10°C,通氮气除氧30分钟后,加入1重量%亚硫酸氢钠水溶液〇. 13g,再加入1重量%过硫酸铵水溶液0. 63g,并继续通氮除氧10分钟。 [0110] (3) control of the initial temperature of the system 10 ° C, deoxygenated nitrogen for 30 minutes, was added 1 wt% aqueous sodium bisulfite billion. 13g, was added 1 wt% aqueous solution of ammonium persulfate 0. 63g, and continues nitrogen-oxygen for 10 minutes. 将反应器密闭,保持在l〇°C,反应1小时后,升温至25°C,反应5小时,待反应温度冷却到室温后,加入10. 37g壬基酚聚氧乙烯醚,用80目滤布过滤得到乳液状产品。 The reactor was sealed and kept at l〇 ° C, after 1 hour, warmed to 25 ° C, reacted for 5 hours, until the reaction temperature was cooled to room temperature, 10. 37g of polyoxyethylene nonyl phenyl ether, 80-mesh cloth filter to obtain an emulsion-like product. 将反相乳液产品用丙酮和甲醇混合溶剂沉淀出来后,即可获得丙烯酰胺系共聚物P5。 After the inverse emulsion product precipitated with a mixed solvent of acetone and methanol, to obtain an acrylamide copolymer P5.

[0111] 对P5进行各种测定,IR光谱中1660CHT1和1635CHT1处分别出现归属于酰胺基的酰胺I带吸收峰(C=0伸缩振动)和酰胺II带吸收峰(NH弯曲振动),在1430CHT 1处出现CN的伸缩振动吸收峰,在1546CHT1、1449CHT1、1364CHT1处出现双丙酮丙烯酰胺C=0吸收峰, 1170CHT 1出现了M2单体CH3-C-CH3骨架振动的特征伸缩振动峰。 [0111] The various measured P5, and the IR spectrum 1660CHT1 1635CHT1 appears attributable to the amide group are amide I absorption band (C = 0 stretching vibration) and amide II absorption band (NH bending vibration), in 1430CHT CN stretching vibration occurs at a peak absorption occurs diacetone acrylamide C = 0 absorption peak at 1546CHT1,1449CHT1,1364CHT1, 1170CHT 1 vibrational peak appears M2 monomer CH3-C-CH3 skeleton stretching vibration characteristics. 可以确定得到的共聚物分子具有式(22)所示的结构,通过黏度法测得其粘均分子量Mv为550万,单体转化率为99. 9%以上。 It may determine the resulting copolymer having a molecular structure represented by Formula (22), as measured by obtaining the viscosity viscosity average molecular weight Mv of 5,500,000, a monomer conversion of more than 99.9%. 其中,式(22)以及和u仅表示出结构单元的类型和数目,而不表示结构单元的连接方式。 Wherein, the formula (22), and u and structural types and number of units are only shown, without connection represents a structural unit. Xp x2、y2、ζι、z2和u的具体数值由投料量确定,分子结构式和结构单元的组成采用定量13C谱测定,其中,(xjxj "yi+yj "zjzj :u=l :0.07 :0.35 : 0. 003〇 Xp x2, y2, ζι, z2 and u are the specific values ​​determined by the feeding amount, composition quantitative 13C spectrum to determine the molecular formula and structural units, wherein, (xjxj "yi + yj" zjzj: u = l: 0.07: 0.35: 0. 003〇

[0112] [0112]

Figure CN104250339AD00261

[0113] 实施例6 [0113] Example 6

[0114] 本实施例用于说明本发明提供的反相乳液聚合法制备丙烯酰胺系共聚物。 DESCRIPTION The present invention provides the inverted acrylamide copolymer Preparation [0114] for the emulsion polymerization of the present embodiment.

[0115] (1)将21. 32g的丙烯酰胺、54. 77g的式(15)所示的Ml单体、6. 09g的双丙酮丙烯酰胺和〇. 〇〇2g的式(16)所示的M2单体加入到配制瓶中,加入465. 7g去离子水,搅拌使单体完全溶解,分别向烧瓶中加入1重量%的EDTA水溶液8. 5g,加入1重量%偶氮二异丁基脒盐酸盐水溶液2. lg,加入尿素0. 08g,充分搅拌使其混合均匀,用10重量%的氢氧化钠溶液pH至7. 1,得到水相。 [0115] Ml monomer (1) 21. 32g of acrylamide, of formula (15) is 54. 77g's, 6. 09g of diacetone acrylamide and square. 〇〇2g of formula (16) shown in FIG. the monomer is added to the formulation M2 flask, 465. 7g of deionized water and stirred to complete dissolution of the monomers, of 1 wt% aqueous solution of EDTA were added to the flask 8. 5g, added 1% by weight of azobis-isobutyl hydrochloride solution 2. lg, urea was added 0. 08g, sufficiently stirred and mixed with a 10 wt% sodium hydroxide solution the pH to 7.1 to obtain an aqueous phase.

[0116] (2)将失水山梨醇脂肪酸酯(span60) 10g,烷基酚聚氧乙烯醚(Ig印al CA720, Sigma-Aldrich公司,以下相同)12. 34g,145. 23g煤油混合成油相,并将步骤(1)中得到水相加入到油相中,通过高速混匀形成反相乳液加入到反应器中。 [0116] (2) a sorbitan fatty acid ester (span60) 10g, polyoxyethylene alkyl phenol ether (Ig printed al CA720, Sigma-Aldrich Corporation, hereinafter the same) 12. 34g, 145. 23g mixed into kerosene the oil phase and the aqueous phase obtained in step is added to the oil phase (1) was added to the reactor by a high speed mixing invert emulsion is formed.

[0117] (3)控制体系初始温度8°C,通氮气除氧30分钟后,加入1重量%亚硫酸氢钠水溶液0. 18g,再加入1重量%过硫酸铵水溶液1. 3g,并继续通氮除氧10分钟。 [0117] (3) control of the initial temperature of the system 8 ° C, deoxygenated nitrogen for 30 minutes, was added 1 wt% aqueous sodium bisulfite 0. 18g, was added 1 wt% aqueous solution of ammonium persulfate 1. 3g, and continue to nitrogen-oxygen for 10 minutes. 将反应器密闭, 保持在8°C,反应3小时后,升温至40°C,反应4小时,待反应温度冷却到室温后,加入7. 26g 壬基酚聚氧乙烯醚,用100目滤布过滤得到乳液状产品。 The reactor was sealed and kept at 8 ° C, after the reaction for 3 hours, warmed to 40 ° C, for 4 hours, until the reaction temperature was cooled to room temperature, 7. 26g nonylphenol ether, filtered through a 100 mesh cloth filter to obtain an emulsion-like product. 将反相乳液产品用丙酮和甲醇混合溶剂沉淀出来后,即可获得丙烯酰胺系共聚物P6。 After the inverse emulsion product precipitated with a mixed solvent of acetone and methanol, to obtain an acrylamide copolymer P6.

[0118] 对P6进行各种测定,IR光谱中,1660CHT1和1635CHT1处分别出现归属于酰胺基的酰胺I带吸收峰(c=0伸缩振动)和酰胺II带吸收峰(NH弯曲振动),在1430CHT 1处出现CN的伸缩振动吸收峰,在1546011^1449011^13640^1处出现双丙酮丙烯酰胺C=0吸收峰,1170CHT 1出现了M2单体CH3-C-CH3骨架振动的特征伸缩振动峰。 [0118] Various assay to P6, the IR spectrum, 1660CHT1 and appeared at 1635CHT1 attributable to amide I band of the amide group absorption peak (c = 0 stretching vibration) and amide II absorption band (NH bending vibration), in CN stretching vibration occurs at the absorption peak 1430CHT 1 in 1,546,011 1,449,011 ^ ^ ^ 13640 1 appears at diacetone acrylamide C = 0 absorption peak, 1170CHT 1 wherein the peak vibration occurred CH3-C-CH3 backbone monomer stretching vibration M2 . 可以确定得到的共聚物分子具有式(23)所示的结构,通过黏度法测得其粘均分子量Mv为760万,单体转化率为99. 9%以上。 It may determine the resulting copolymer having a molecular structure represented by Formula (23), as measured by obtaining the viscosity viscosity average molecular weight Mv of 7,600,000, a monomer conversion of more than 99.9%. 其中,式(23)以及a七七、ζ2和u仅表示出结构单元的类型和数目,而不表示结构单元的连接方式。 Wherein, the formula (23) and a 2277 type and the number shows only a structural unit ζ2 and u, without showing connection structural units. Xp x2、y2、ζι、ζ2和u的具体数值由投料量确定,分子结构式和结构单元的组成采用定量13C谱测定,其中,(xjxj "yi+yj "zjzj :u=l :0.88 :0· 12 : 0·00002。 Xp x2, specific values ​​y2, ζι, ζ2 and u is determined by the feeding amount, the constituent molecules of the formula and the structural unit of the quantitative 13C spectroscopy, wherein, (xjxj "yi + yj" zjzj: u = l: 0.88: 0 · 12: 0 · 00002.

[0119] [0119]

Figure CN104250339AD00271

[0120] 测试例1 [0120] Test Example 1

[0121] 水不溶物是根据SY/T5862-1993中规定的方法测定的。 [0121] water-insoluble substance according to the method specified in SY / T5862-1993 in the assay. 将P1-P6、DPI、DP2和羟丙基瓜胶(JXY油井压裂羟丙基瓜胶粉,山东聚鑫化工有限公司,以下相同,)进行水溶性测定,结果如表1所不。 The P1-P6, DPI, DP2 and hydroxypropyl guar (hydroxypropyl guar fracturing JXY powder, Shandong Xin Chemical Co., Ltd., hereinafter the same) of water-soluble measured results shown in Table 1 are not.

[0122] 表1 [0122] TABLE 1

[0123] [0123]

Figure CN104250339AD00281

[0124] 从表1中可以看出,本发明提供的两种方法制备的丙烯酰胺系共聚物P1-P6中水不溶物含量明显低于现场施工中常用做减阻剂的羟丙基瓜胶,这说明与羟丙基瓜胶比,使用P1-P6作为页岩气压裂用减阻剂对地层的伤害低。 [0124] As can be seen from Table 1, content of water-insoluble acrylamide copolymer P1-P6 prepared by two methods of the present invention provides significantly lower than on-site construction of DRA commonly done hydroxypropyl guar gum , indicating that the ratio of hydroxypropyl guar gum, P1-P6 used as a drag reducing agent shale gas fracturing low formation damage.

[0125] 测试例2 [0125] Test Example 2

[0126] 在2500rpm剪切速率下,分别将? [0126] at a shear rate of 2500rpm, respectively? 1-?6、0?1、0?2、部分水解聚丙烯酰胺(即八1,淄博天健化工有限公司,牌号TJY-1,粘均分子量为1000-1300万,下同)和各自分别地缓慢加入到体积比为80/20和60/40的水/醇溶液(本测试例中使用甲醇)中,P1-P6、DPI、DP2和部分水解聚丙烯酰胺的用量为水/醇溶液的〇. 01重量% (样品质量按样品内纯聚合物质量计),溶解时间为30min,结果如表2所示。 1-? 6,0? 1,0? 2, partially hydrolyzed polyacrylamide (i.e. eight 1, Tianjian Zibo Chemical Co., Ltd., trademark TJY-1, 1000-1300 Wan viscosity average molecular weight, hereinafter the same), and are each independently (this test example using methanol) was added slowly to a volume ratio of 80/20 and 60/40 of water / alcohol solution, the amount of P1-P6, DPI, DP2 and partially hydrolyzed polyacrylamides are water / alcohol solution square. 01 wt.% (pure polymer sample mass by the sample mass), the dissolution time was 30min, the results shown in table 2.

[0127] 表2 [0127] TABLE 2

[0128] [0128]

Figure CN104250339AD00282

[0129] [0129]

Figure CN104250339AD00291

[0130] 从表2中可以看出,本发明提供的两种方法制备的丙烯酰胺系共聚物P1-P6作为页岩气压裂用减阻剂,与部分水解聚丙烯酰胺相比,与醇的配伍性好。 [0130] As can be seen from Table 2, acrylamide copolymers prepared according to the present invention provides two methods P1-P6 as shale gas fracturing a drag reducing agent, as compared with the partially hydrolyzed polyacrylamide, with an alcohol good compatibility.

[0131] 测试例3 [0131] Test Example 3

[0132] 在温度为25°C的条件下,将P1-P6、DPI、DP2、HPAM和羟丙基瓜胶分别溶于纯水和浓度为2重量%、4重量%、8重量%、10重量%、12重量%的NaCl或KC1溶液中,将其配制成的500mg/L和1000mg/L的溶液(样品质量按样品内纯聚合物质量计),然后根据SY/ T6376-2008中规定的方法在GLM-1管路摩阻测定装置上测定上述溶液的减阻率,(测试条件:测试段管路的内径为8mm,测试段管路的长度为9m,泵注排量为30L/min),结果如表3 和表4所示。 [0132] at a temperature of 25 ° C conditions, the P1-P6, DPI, DP2, HPAM and hydroxypropyl guar gum are dissolved in purified water in a concentration of 2 wt%, 4 wt%, 8%, 10 wt%, 12 wt% NaCl or KC1 solution, which was formulated to 500mg / L and 1000mg / L solution (sample mass by the mass of the sample of the pure polymer), and then according to a predetermined SY / T6376-2008 the method of measuring drag reduction rate of the solution in the GLM-1 line friction measuring apparatus (test conditions: the inner diameter of the pipeline test section was 8mm, length of the test section duct is 9m, pumping displacement of 30L / min ), results shown in table 3 and table 4.

[0133] 表3 [0133] TABLE 3

[0134] [0134]

Figure CN104250339AD00292

[0135] [0135]

Figure CN104250339AD00301

Figure CN104250339AD00311

[0138] [0138]

[0139] 从表3和表4中可以看出,本发明提供的两种方法制备的丙烯酰胺系共聚物P1-P6 作为页岩气压裂用减阻剂,与羟丙基瓜胶、HPAM、DPI和DP2相比,与粘土稳定剂(如,KC1和NaCl)配伍性好,抗盐性能优异。 [0139] From Tables 3 and 4 can be seen, an acrylamide-based copolymer prepared according to the present invention provides two methods P1-P6 as shale gas fracturing a drag reducing agent, hydroxypropyl guar gum, of HPAM , compared to the DPI and DP2, clay stabilizers (e.g., the KC1 and NaCl) good compatibility, excellent salt resistance.

[0140] 测试例4 [0140] Test Example 4

[0141] 降阻剂对岩心的伤害性按石油天然气行业标准SY/T5107-2005《水基压裂液性能评价方法》中压裂液滤液对岩心基质渗透率损害实验进行,在美国岩心公司地层伤害测试仪器(FDS-800)上进行测试,岩心的基质渗透率为2md。 [0141] The reducing agent to the core by noxious oil and gas industry standard SY / T5107-2005 "water-based fracturing fluid performance evaluation method" in the fracturing fluid to the core matrix and the filtrate permeability damage experiment, in U.S. company formation core tested on test equipment damage (FDS-800), the core matrix permeability 2md.

[0142] 将P1_P6、DP1和DP2分别溶于纯水,将其配制成1000mg/L的溶液(样品质量按样品内纯聚合物质量计),在测试温度为65°C的条件下保存24hr,在美国岩心公司地层伤害测试系统(FDS-800)上测试其对岩心的伤害性,结果如表5所示。 [0142] The P1_P6, DP1 and DP2 are dissolved in purified water, formulated into 1000mg / L solution (sample mass by the sample of the pure polymer mass) stored 24hr at the test temperature of 65 ° C conditions, harmful to the core tested in the US company core formation damage test system (FDS-800), as shown in table 5.

[0143] 表5 [0143] TABLE 5

[0144] [0144]

Figure CN104250339AD00321

[0145] 从表5中可以看出,本发明提供的两种方法制备的丙烯酰胺系共聚物P1-P6对岩心的伤害明显低于现场施工中常用做减阻剂的对比样品,这说明使用P1-P6作为页岩气压裂用减阻剂对地层的伤害低。 [0145] As can be seen from Table 5, an acrylamide copolymer prepared P1-P6 according to the present invention provides two methods of core damage was significantly lower than on-site construction commonly used to make comparative DRA samples, indicating that the use of P1-P6 as shale gas fracturing with DRA low formation damage.

[0146] 上述测试结果说明,本发明提供的丙烯酰胺系共聚物在水中的不溶物含量仅为0. 01% ;在2500rpm的剪切速率下,能完全溶解于水/醇溶液中,与醇的配伍性好;由于与醇和粘土稳定剂(NaCl或KC1)的配伍性提高,提高了抗滤失性能;并且在高盐和高剪切的条件下仍具有高的减阻率;在较低的地层温度(大于60°C )的条件下,具有自降解性,对地层的伤害低。 [0146] The test results indicated that the acrylamide-based copolymer of the present invention is provided only in the insoluble content of 0.01% in water; at a shear rate of 2500rpm, can be completely dissolved in water / alcohol solution, with the alcohol good compatibility; as improved compatibility with an alcohol clay stabilizer (NaCl or the KC1), and improved resistance to fluid loss properties; and still have a high drag reduction at high salt and high shear conditions; lower under conditions of formation temperature (greater than 60 ° C), and having a self-degradable, low formation damage. 此外,本发明提供的丙烯酰胺系共聚物的制备方法具有简便且单体转化率高的优点。 Moreover, preparation of an acrylamide-based copolymer of the present invention to provide a simple and has the advantages of high monomer conversion.

[0147] 以上详细描述了本发明的优选实施方式,但是,本发明并不限于上述实施方式中的具体细节,在本发明的技术构思范围内,可以对本发明的技术方案进行多种简单变型,这些简单变型均属于本发明的保护范围。 [0147] the foregoing detailed description of the preferred embodiments of the present invention, however, the present invention is not limited to the specific details of the above embodiment, within the technical spirit of the invention may be made more simple variations of aspect of the present invention, these simple modifications belong to the scope of the present invention.

[0148] 另外需要说明的是,在上述具体实施方式中所描述的各个具体技术特征,在不矛盾的情况下,可以通过任何合适的方式进行组合。 [0148] Further to be noted that, in various specific features of the above-described specific embodiment described, without conflict, may be combined in any suitable manner. 为了避免不必要的重复,本发明对各种可能的组合方式不再另行说明。 To avoid unnecessary repetition, the present invention without further description of the various possible combinations.

[0149] 此外,本发明的各种不同的实施方式之间也可以进行任意组合,只要其不违背本发明的思想,其同样应当视为本发明所公开的内容。 [0149] Further, among various embodiments of the present invention may be arbitrarily combined as long as it does not violate the spirit of the invention, which should also be considered as the disclosure of the present invention.

Claims (18)

  1. 1. 一种丙烯酰胺系共聚物,其特征在于,所述丙烯酰胺系共聚物含有结构单元A、结构单元B、结构单元C和结构单元D,其中,所述结构单元A为式(1)所示的结构单元,所述结构单元B为式(2)所示的结构单元,所述结构单元C为式(3)所示的结构单元,所述结构单元D为式(4)所示的结构单元;且以所述丙烯酰胺系共聚物中结构单元的总摩尔数为基准, 所述结构单元A的含量为5-95摩尔%,所述结构单元B的含量为2. 5-90摩尔%,所述结构单元C的含量为0. 5-90摩尔%,所述结构单元D的含量为0. 0001-1摩尔% ;所述丙烯酰胺系共聚物的粘均分子量为500万-1500万; An acrylamide copolymer, characterized in that said acrylamide copolymer comprising structural units A, structural units B, C structural unit and the structural unit D, where the A is a structural unit of formula (1) structural unit represented by the structural unit B represented by the formula (2), the structural unit of the structural unit C of the formula (3), the structural unit D of the formula (4) shown in FIG. structural units; and the total number of moles of said acrylamide copolymer of the structural unit as a reference, the content of the structural unit a is from 5 to 95 mol%, the content of the structural unit B is 2. 5-90 mol%, the content of the structural unit C is 0. 5-90 mol%, the content of the structural unit D 0. 0001-1% by mole; viscosity of said copolymer is an acrylamide-based average molecular weight of 5,000,000 - 1500 dollars;
    Figure CN104250339AC00021
    其中,和R12'各自独立地为Η或者C1-C4的烷基;R3为C1-C4的直链或支链亚烷基;^^'^、^、^、''和^'各自独立地为口乂以勺烷基洱^为口乂〗。 Wherein and R12 'are each independently Η or C1-C4 alkyl group; R3 is a linear or branched alkylene of C1-C4 alkyl; ^^' ^, ^, ^, 'and ^' are each independently qe for the mouth to the mouth of the spoon alkyl er ^ qe〗. 的直链或支链亚烷基;为Cl_,Br_,Γ,SCN_, A straight-chain or branched alkylene group; is Cl_, Br_, Γ, SCN_,
    Figure CN104250339AC00022
  2. 2. 根据权利要求1所述的丙烯酰胺系共聚物,其中,以所述丙烯酰胺系共聚物中结构单元的总摩尔数为基准,所述结构单元A的含量为10-70摩尔%,所述结构单元B的含量为5-60摩尔%,所述结构单元C的含量为5-30摩尔%,所述结构单元D的含量为0. 001-0. 5摩尔%,所述丙烯酰胺系共聚物的粘均分子量为500万-1000万。 The acrylamide copolymer according to claim 1, wherein, based on the total moles of acrylamide-based copolymer of the structural units, the content of the structural unit A is 10 to 70 mol%, the the content of said structural unit B is 5 to 60 mol%, the content of the structural unit C of 5 to 30 mol%, the content of the structural unit D 0. 001-0. 5 mol%, of the acrylamide-based viscosity-average molecular weight of the copolymer was 5 million 10 million.
  3. 3. 根据权利要求1所述的丙烯酰胺系共聚物,其中,&和R2各自独立地为Η或者甲基, R3为亚乙基,&为札R4、R5、R6、R 8、R9、Rn、R12、R13、R 14、R12'、R13'和札4'各自独立地为甲基; X-为cr。 3. The acrylamide copolymer of claim 1, wherein R2 and & Η are each independently methyl or, R3 is ethylene, & Sapporo of R4, R5, R6, R 8, R9, Rn , R12, R13, R 14, R12 ', R13' and sheaves 4 'are each independently methyl; X-is cr.
  4. 4. 一种丙烯酰胺系共聚物的制备方法,该制备方法包括在烯烃的溶液聚合反应条件下,在引发剂存在下,使一种单体混合物在水中进行聚合反应,其中,所述单体混合物含有单体E、单体F、单体G和单体H,所述单体E为式(5)所示的单体,所述单体F为式(6)所示的单体,所述单体G为式(7)所示的单体,所述单体Η为式(8)所示的单体,以所述单体混合物中单体的总摩尔数为基准,所述单体Ε的含量为5-95摩尔%,所述单体F的含量为2. 5-90 摩尔%,所述单体G的含量为0. 5-90摩尔%,所述单体Η的含量为0. 0001-1摩尔% ;所述溶液聚合反应的条件使得聚合反应后所得聚合物的粘均分子量为500万-1500万, 4. A method of preparing an acrylamide-based copolymer, the method comprising preparing an olefin under the reaction conditions of the solution polymerization, in the presence of an initiator, a monomer mixture of a polymerization reaction in water, wherein the monomer a monomer mixture containing E, F monomers, the monomers and monomer G H, E is the monomer of formula (5) a monomer represented by the formula F is a monomer (6) monomers represented by G is a monomer of the monomer of formula (7), which is a monomer of formula Η (8), the total moles of the monomer mixture of the monomers, the Ε monomer in an amount of 5-95 mol%, the content of the monomer is 2. F 5-90 mol%, the content of the monomer G 0. 5-90 mol% of the monomer of the Η an amount of 0. 0001-1% by mole; polymerization conditions such that the solution viscosity of the resulting polymer after polymerization average molecular weight of 5 million 15 million,
    Figure CN104250339AC00031
    其中,和R12'各自独立地为Η或者C1-C4的烷基;R3为C1-C4的直链或支链亚烷基;^^'^、^、^、''和^'各自独立地为口乂以勺烷基洱^为口乂〗。 Wherein and R12 'are each independently Η or C1-C4 alkyl group; R3 is a linear or branched alkylene of C1-C4 alkyl; ^^' ^, ^, ^, 'and ^' are each independently qe for the mouth to the mouth of the spoon alkyl er ^ qe〗. 的直链或支链亚烷基;为Cl_,Br_,Γ,SCN_, A straight-chain or branched alkylene group; is Cl_, Br_, Γ, SCN_,
    Figure CN104250339AC00032
  5. 5. -种丙烯酰胺系共聚物的制备方法,该制备方法包括将水相和油相混合形成反相乳液,然后在乳液聚合反应条件下,在引发剂的存在下,将该反相乳液进行聚合反应,所述水相为含有单体混合物的水溶液,所述油相含有有机溶剂和乳化剂,其中,所述单体混合物含有单体E、单体F、单体G和单体H,所述单体E为式(5)所示的单体,所述单体F为式(6)所示的单体,所述单体G为式(7)所示的单体,所述单体Η为式(8)所示的单体,以所述单体混合物中单体的总摩尔数为基准,所述单体Ε的含量为5-95摩尔%,所述单体F的含量为2. 5-90摩尔%,所述单体G的含量为0. 5-90摩尔%,所述单体Η的含量为0. 0001-1摩尔% ; 所述乳液聚合反应的条件使得聚合反应后所得聚合物的粘均分子量为500万-1500万, 5. - The method of producing an acrylamide-based copolymer, which method comprises preparing the aqueous and oil phases mixed to form a reverse phase emulsion, and then the reaction under emulsion polymerization conditions in the presence of an initiator, the emulsion is inverted the polymerization reaction, the aqueous phase is an aqueous solution containing a monomer mixture, the oil phase contains an organic solvent and emulsifier, wherein the monomer mixture containing the monomer E, F. monomers, the monomers and monomer G H, the monomer is a monomer represented by the formula E (5), F is the monomer of formula (6), and G is the monomer of formula (7) in the monomer, the Η is a monomer of formula (8) the monomer represented by the total moles of the monomer mixture of the monomers, the amount of monomer Ε 5-95 mol% of the monomer of F 2. the content of 5-90 mol%, the content of the monomer G is 0. 5-90 mol%, the content of the monomer Η 0. 0001-1% by mole; polymerization reaction conditions such that the after polymerization the resulting polymer viscosity average molecular weight of 5 million 15 million,
    Figure CN104250339AC00041
    其中,和R12'各自独立地为Η或者C1-C4的烷基;R3为C1-C4的直链或支链亚烷基;^^'^、^、^、''和^'各自独立地为口乂以勺烷基洱^为口乂〗。 Wherein and R12 'are each independently Η or C1-C4 alkyl group; R3 is a linear or branched alkylene of C1-C4 alkyl; ^^' ^, ^, ^, 'and ^' are each independently qe for the mouth to the mouth of the spoon alkyl er ^ qe〗. 的直链或支链亚烷基;为Cl_,Br_,Γ,SCN_, A straight-chain or branched alkylene group; is Cl_, Br_, Γ, SCN_,
    Figure CN104250339AC00042
  6. 6. 根据权利要求5所述的制备方法,其中,所述水相与油相的重量比为1 :0. 1-2,优选为1 :0· 3-0. 8。 The production method according to claim 5, wherein the weight ratio of aqueous and oil phase is 1: 01-2, preferably from 1: 0 · 3-08.
  7. 7. 根据权利要求5所述的制备方法,其中,以所述乳液的总重量为基准,所述有机溶剂的用量为10-60重量%,所述乳化剂的用量为1-15重量%,优选地,所述有机溶剂的用量为20-35重量%,所述乳化剂的用量为2-10重量%。 The production method according to claim 5, wherein, based on the total weight of the emulsion as a reference, the amount of the organic solvent 10 to 60 wt%, the emulsifier in an amount of 1-15% by weight, preferably, the organic solvent used in an amount of 20-35% by weight, the emulsifier in an amount of 2-10 wt%.
  8. 8. 根据权利要求5所述的制备方法,其中,该方法还包括在所述聚合反应后将所述聚合反应所得产物与转相剂接触。 8. The production method according to claim 5, wherein the method further comprises the resultant reaction product into contact with a phase inversion agent in the polymerization reaction after the polymerization.
  9. 9. 根据权利要求8所述的制备方法,其中,以所述乳液的总重量为基准,所述转相剂的用量为0. 5-10重量%,优选为1-4重量%。 9. A method of preparing an amount according to claim 8, wherein, based on the total weight of the emulsion as a reference, the phase transfer agent is from 0.5 to 10 wt%, preferably 1-4 wt%.
  10. 10. 根据权利要求4或5所述的制备方法,其中,以所述单体混合物中单体的总摩尔数为基准,所述单体E的含量为10-70摩尔%,所述单体F的含量为5-60摩尔%,所述单体G 的含量为5-30摩尔%,所述单体Η的含量为0. 001-0. 5摩尔% ;所述聚合反应的条件使得聚合反应后所得聚合物的粘均分子量为500万-1000万。 10. The production method according to claim 4 or claim 5, wherein the total moles of the monomer mixture of the monomers, the content of the monomer E is 10-70 mol%, of the monomer F content of 5 to 60 mol% of the monomer content of 5 to 30 mol% G, Η content of the monomer is 0.5% by mole 001-05;. the polymerization conditions such that the polymerization after the reaction, the resultant viscosity-average molecular weight of 500 million to 10 million.
  11. 11. 根据权利要求4或5所述的制备方法,其中,札和R2各自独立地为Η或者甲基,R3 为亚乙基,1?7为11,1?4、1?5、1?6、1? 8、1?9、1?11、1?12、1?13、1? 14、1?12'、1?13'和1?14'各自独立地为甲基工为cr。 11. The production method according to claim 4 or claim 5, wherein, Sapporo and R2 are each independently Η or methyl, R3 is ethylene, 1? 7 11,1? 4,1? 5,1? 6,1? 8,1? 9,1? 11, 1? 12, 1? 13, 1? 14, 1? 12 '1? 13' and 1? 14 'are each independently methyl workers as cr.
  12. 12. 根据权利要求4或5所述的制备方法,其中,所述单体混合物的重量与水和单体混合物的总重量的比值为0. 05-0. 5 :1,优选为0. 15-0. 4 :1。 12. The production method according to claim 4 or claim 5, wherein the ratio by weight of the total weight of the monomer mixture and water of the monomer mixture is 05-05 0.5: 1, preferably 0.15 -04: 1.
  13. 13. 根据权利要求4或5所述的制备方法,其中,所述引发剂选自偶氮系引发剂和氧化还原系引发剂,以所述单体混合物中单体的总摩尔数为基准,所述偶氮系引发剂的用量为0-10摩尔%,所述氧化还原系引发剂的用量为0-10摩尔%,且所述引发剂的总用量为0. 0001-10摩尔% ;所述偶氮系引发剂选自2, 2' -偶氮二异丁基脒盐酸盐和/或2, 2' -偶氮二[2-(2-咪唑啉-2-丙烷)-二盐酸盐],所述氧化还原系引发剂包括氧化剂和还原剂, 所述氧化剂与所述还原剂的摩尔比〇. 5-3. 5 :1,所述氧化剂选自过硫酸铵、过硫酸钾、过硫酸钠和过氧化氢中的至少一种;所述还原剂为无机还原剂,所述无机还原剂为选自亚硫酸氢钠、亚硫酸钠、雕白粉、硫代硫酸钠、硫酸亚铁、保险粉、抗坏血酸和脲中的至少一种。 13. The production method according to claim 4 or claim 5, wherein the initiator is selected from azo initiator and a redox initiator to the total moles of the monomer mixture of the monomers, the azo initiator is used in an amount of 0-10 mol%, the redox initiator used is 0-10 mol%, and the total initiator is used in an amount 0.5 mole% 0001-10; the said azo-based initiator is selected from 2, 2 '- azobis isobutyl amidine hydrochloride, and / or 2, 2' - azobis [2- (2-imidazolin-2-propane) - disalt acid salt], the redox initiators include an oxidizing agent and a reducing agent, the oxidizing agent and the reducing agent in a molar ratio of square 5-35: 1, the oxidizing agent is selected from ammonium persulfate, potassium persulfate , at least one of sodium persulfate and hydrogen peroxide; and the reducing agent is an inorganic reducing agent, the inorganic reducing agent selected from sodium bisulfite, sodium sulfite, Rongalit, sodium thiosulfate, ferrous sulfate, hydrosulfite, ascorbic acid and at least one of urea.
  14. 14. 根据权利要求4或5所述的制备方法,其中,所述聚合反应在助剂存在下进行,所述助剂为选自螯合剂和其他助剂中的至少一种;以所述单体混合物的总摩尔数为基准,所述螯合剂的用量为0-2摩尔%,所述其他助剂的用量为0-2摩尔%,且以所述单体混合物中单体的总摩尔数为基准,所述助剂的总用量为〇. 0001-4摩尔% ;所述螯合剂选自乙二胺四乙酸二钠、三乙二胺五乙酸、柠檬酸、柠檬酸盐和聚羟基丙烯酸中的至少一种,所述其他助剂为选自尿素、甲酸钠、异丙醇和次磷酸钠中的至少一种。 14. The production method according to claim 4 or claim 5, wherein the polymerization reaction is carried out in the presence of adjuvant, said adjuvant is at least one selected from the chelating agents and other additives; to the single total number of moles of a mixture of reference, the chelating agent in an amount of 0-2 mol%, an amount of the other auxiliaries 0-2 mol%, and the total number of moles of monomers in the monomer mixture as a reference, a total amount of the aid is square 0001-4 mol.%; the chelating agent is selected from edetate disodium, triethylenediamine pentaacetic acid, citric acid, citrates, and acrylic acid polyhydroxy at least one of the at least one further auxiliaries selected from urea, sodium formate, and sodium hypophosphite in isopropanol.
  15. 15. 根据权利要求4或5所述的制备方法,其中,所述溶液聚合反应和所述乳液聚合反应各自在惰性气体存在下进行,聚合反应条件包括:温度为〇_5〇°C,时间为1-24小时,pH值为5-13。 15. The production method according to claim 4 or claim 5, wherein the solution polymerization and the emulsion polymerization reaction is carried out in each of the presence of an inert gas, polymerization reaction conditions include: temperature 〇_5〇 ° C, time 1 to 24 hours, pH = 5-13.
  16. 16. 根据权利要求4或15所述的制备方法,其中,所述溶液聚合反应的过程包括依次进行的三个阶段,第一阶段的反应条件包括:温度为〇-l〇°C,时间为1-15小时;第二阶段的反应条件包括:温度为15-30°C,时间为3-8小时;第三阶段的反应条件包括:温度为35-50°C,时间为2-14小时。 16. The production method of claim 4 or claim 15, wherein the solution polymerization process sequentially including three stages, the first stage reaction conditions comprise: a temperature of square-l〇 ° C, time 15 hours; the second stage reaction conditions comprise: a temperature of 15-30 ° C, the time is 3-8 hours; the reaction conditions of the third stage comprising: a temperature of 35-50 ° C, time is 2-14 hours .
  17. 17. 根据权利要求5或15所述的制备方法,其中,所述乳液聚合反应的过程包括依次进行的两个阶段,第一阶段的反应条件包括:温度为0_20°C,时间为1-15小时;第二阶段的反应条件包括:温度为20-50°C,时间为2-8小时。 17. The production method of claim 5 or claim 15, wherein the emulsion polymerization process comprises two stages sequentially, the conditions of the first reaction stage comprising: a temperature 0_20 ° C, time 1 to 15 h; the second stage reaction conditions comprise: a temperature of 20-50 ° C, the time is 2-8 hours.
  18. 18. 权利要求1-3中任意一项所述的丙烯酰胺系共聚物或者由权利要求4-17中任意一项所述的方法制备得到的丙烯酰胺系共聚物作为减阻剂的应用。 Application of DRA acrylamide copolymer 18. A method for preparing an acrylamide-based copolymer as claimed in any one of claims 4-17 or any one of the claims as obtained.
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CN106317316A (en) * 2015-06-29 2017-01-11 中国石油化工股份有限公司 Preparation method of drag reducer for shale gas fracturing and drag reducer for fracturing

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