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Compound containing cyclic group having disulfide structure and preparation method and application of compound

A technology of cyclic groups and compounds, which is applied to compounds with cyclic groups containing disulfide structures and their preparation and application fields, can solve the problems of low grafting efficiency, uneven grafting, and failure to achieve chemical grafting. In order to achieve the effect of expanding the dynamic volume, increasing the viscosity and improving the salt resistance and hydrophilic performance

Active Publication Date: 2012-05-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the stabilizer is also a polymerization inhibitor at the same time, it cannot be used as a monomer to participate in the polymerization of HPAM, but can only be reacted with macromolecules after the completion of HPAM polymerization, and the post-grafting stabilizer group
However, due to the high viscosity of HPAM, the grafting of the stabilizer only exists on the surface of the HPAM colloidal particles, resulting in low grafting efficiency and uneven grafting.
Therefore, there is no effective means to realize the chemical grafting stabilizer

Method used

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  • Compound containing cyclic group having disulfide structure and preparation method and application of compound
  • Compound containing cyclic group having disulfide structure and preparation method and application of compound
  • Compound containing cyclic group having disulfide structure and preparation method and application of compound

Examples

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preparation example Construction

[0032] According to the present invention, the preparation method of the compound having a cyclic group containing a disulfide structure comprises: in the presence of a solvent and a polymerization inhibitor and under condensation reaction conditions, contacting the first reactant with the second reactant; The first reactant is a compound shown in general formula (4), and the second reactant is a compound shown in general formula (5):

[0033]

[0034] In general formula (4), R 2 and X are as defined above in the present invention, and Y can be -OH or -NH 2 ;

[0035] In general formula (5), R 1 As defined above in the present invention, Z can be -Cl or -OH;

[0036] And when Y is -OH, Z is -Cl, when Y is -NH 2 , Z is -OH.

[0037] According to a specific embodiment of the present invention, Y in the first reactant is -OH, and Z in the second reactant is -Cl. When Y in the first reactant is -OH, and Z in the second reactant is -Cl, as long as the molar ratio of the fi...

Embodiment 1

[0051] This example is used to illustrate the compound with a cyclic group containing a disulfide structure provided by the present invention and its preparation method.

[0052] In a three-necked flask equipped with a thermometer, a stirrer, and a reflux condenser, add 1 part of thioctylamine (scientific name: 6,8-dithioctylamine), 10 parts of solvent toluene and 0.01 part of polymerization inhibitor agent hydroquinone, heated to 60°C to dissolve it completely, and then added 2 parts of methacrylic acid and 0.1 part of concentrated sulfuric acid (98% by mass concentration) in sequence. First heat and reflux for about 3 hours, and then install a water separator for azeotropic dehydration. After separating 0.7 parts of water, the temperature in the three-necked flask was maintained at 120°C. When it was observed that the desorption amount was equivalent to the theoretical value (1 part of water), the reaction was stopped, the temperature was lowered to room temperature, and un...

Embodiment 2

[0056] This example is used to illustrate the compound with a cyclic group containing a disulfide structure provided by the present invention and its preparation method.

[0057] In a three-necked flask equipped with a thermometer, a stirrer, and a reflux condenser, based on the amount of the substance, after adding 0.01 part of the polymerization inhibitor hydroquinone, add 1 part of thioctyl alcohol (scientific name: 6,8-dithioctyl alcohol) in sequence. Octanol), 1.2 parts of triethylamine, 10 parts of toluene solvent, warming up to 50 ° C, then adding 2 parts of methacryloyl chloride (the molar ratio of the three is 1:1.2:2) in the dropping funnel, drop 1 After the dropwise addition is completed, the temperature is kept at 50° C. for 8 hours. After the reaction, filter the salt generated by the reaction, distill under reduced pressure, remove the solvent and excess acid chloride, then pour the product into a beaker, wash off hydroquinone and a small amount of acrylic acid w...

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Abstract

The invention discloses a compound containing a cyclic group having a disulfide structure, wherein the compound is shown as a general formula (1). In the general formula (1), R1 is any one of H and alkyl with 1-10 carbon atoms; R2 is any one of alkylidene with 1-10 carbon atoms; A is -O- or -NH-; and X is the cyclic group having the disulfide structure shown as a general formula (2). In the general formula (2), R3 and R4 are separately selected from any one of H and alkyl with 1-3 carbon atoms respectively; R3 or R4 on any one of n carbon atoms on a loop is substituted by a bond connected with R2; and n is an integer of 3-10. The compound provided by the invention is particularly suitable for improving a polyacrylamide copolymerization functional monomer with high-temperature viscosity stability of a polyacrylamide aqueous solution for tertiary recovery.

Description

technical field [0001] The invention relates to a compound with a cyclic group containing a disulfide structure, a preparation method and application thereof. Background technique [0002] Polyacrylamide (HPAM) is currently the main chemical agent used for tertiary oil recovery in oilfields. It has a good oil displacement effect on type I oil reservoirs with low temperature and can greatly improve oil recovery. However, the use of HPAM is greatly affected by the temperature of the working environment. For deeply buried Type II and Type III oil reservoirs, due to the high temperature and the presence of active impurities, a trace amount of oxygen will also cause serious oxidative degradation of the polymer, resulting in solution The viscosity of the product drops sharply, loses its viscosity and polymer properties, and loses its use value. This is a very prominent problem in the practical application of type II and type III oil reservoirs. [0003] There are few antioxidant...

Claims

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Application Information

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IPC IPC(8): C07D339/04C07D339/08C08F220/56C08F220/54C09K8/588
Inventor 祝纶宇魏小林计文希赵方园伊卓刘晓光李勇杜凯林蔚然
Owner CHINA PETROLEUM & CHEM CORP
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