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Preparation method for sulfonated-phenol-formaldehyde resin formed by modifying benzoxazine resin

A technology of sulfomethyl phenolic resin and sulfonated phenolic resin, which is applied in the field of preparation of super-concentrated new sulfomethyl phenolic resin SMP-Ⅲ, can solve the problems of not meeting the operation requirements, large amount of addition, high drilling cost, etc. Achieve the effects of good filtration loss, low filtration loss and strong salt resistance

Active Publication Date: 2014-11-12
SICHUAN ZHENGRONG IND +1
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  • Claims
  • Application Information

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Problems solved by technology

However, it cannot meet the drilling requirements of three high wells (ultra-deep, ultra-high temperature, and ultra-high pressure). It cannot meet the operation requirements at all under the condition of over 180°C, such as 200°C, and the amount of addition is large. higher cost

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  • Preparation method for sulfonated-phenol-formaldehyde resin formed by modifying benzoxazine resin
  • Preparation method for sulfonated-phenol-formaldehyde resin formed by modifying benzoxazine resin
  • Preparation method for sulfonated-phenol-formaldehyde resin formed by modifying benzoxazine resin

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Embodiment Construction

[0015] A kind of preparation method of sulfomethylphenol-formaldehyde resin modified with benzoxazine resin is as follows:

[0016] (1) Preparation of powder: Grind bisphenol A benzoxazine with a particle size of ≤25mm into a powder with a particle size of 10um-125um for later use;

[0017] (2) Preparation of modified sulfonated phenolic resin agent:

[0018] ① Add 1 mole of phenol and 1 mole of formaldehyde into the reaction kettle with a reflux cooler equipped with a stirrer in sequence, stir at 119°C for 10 minutes, cool down, keep the temperature at 109°C, then add 1 mole of formaldehyde, 0.5 mole of sodium metabisulfite, water 40ml is used as a sulfonating agent, the sulfonating time is 3 hours, and finally 1 mole of formaldehyde is added, and the reaction is refluxed at 97°C-104°C for 3-4 hours;

[0019] ②When the reaction is finished, cool down to 60°C-70°C and discharge to obtain the modified sulfonated phenolic resin agent.

[0020] (3) Put the powder obtained in st...

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Abstract

A preparation method for sulfonated-phenol-formaldehyde resin formed by modifying benzoxazine resin includes the steps that (1), bisphenol A type benzoxazine with the particle size smaller than or equal to 25 mm is pulverized to be powder through a pulverizing machine, wherein the particle size of the powder is 10 micrometers-125 micrometers, and the powder is standby; (2), the powder obtained in the step (1) and modified sulfonated phenolic resin agents are thrown into a reaction kettle according to the mass ratio of 1:20, mixed, stirred for one hour at the temperature of 105 DEG C and then delivered into an ultrasonic emulsifying device through a discharging pump to be ultrasonically emulsified for 20 minutes to obtain a mixed solution, and the mixed solution is standby; (3), spraying drying is performed on the mixed solution in the step (2) to obtain the modified sulfonated-phenol-formaldehyde resin. The sulfonated-phenol-formaldehyde resin can be resistant to high temperature of 200 DEG C, has an obvious effect of lowering the filter loss of drilling fluid and can meet the requirements for three high well drilling.

Description

technical field [0001] The invention relates to a preparation method of super-concentrated novel sulfomethyl phenolic resin SMP-III modified by benzoxazine resin. Background technique [0002] Sulfonated phenolic resin is a temperature-resistant and salt-resistant fluid loss reducer developed by Chinese scientific and technological workers in the 1970s. Its biggest feature is that it can use high temperature to act on its performance, so it has become the most popular deep well drilling fluid system in China. the part that can not be lost. However, the sulfonated phenolic resin produced by the current production process has low use efficiency, poor inhibition, poor use effect in medium-deep and shallow well sections, and cannot meet the high-temperature and high-pressure fluid loss control and rheological requirements of brine and saturated brine drilling fluids under ultra-high temperature conditions . "Patent No.: 201010274133.X, Patent Name: A Preparation Method of Modi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/28C08G8/10C09K8/035
Inventor 王刚毅郭其鹏
Owner SICHUAN ZHENGRONG IND
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