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Hydrotalcite type bridge-building agent and method for preparing same

A technology of bridging agent and hydrotalcite is applied in the field of bridging agent and its preparation, which can solve the problems of poor stability of bridging agent and high production cost of bridging agent, reduce the amount of oil phase, reduce transportation cost and storage cost, The effect of increasing the content of active ingredients

Inactive Publication Date: 2010-06-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of high production cost of the bridging agent in the prior art and the poor stability of the bridging agent prepared, providing a hydrotalcite type bridging agent and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0010] Specific embodiment 1: In this embodiment, the hydrotalcite-type bridging agent is composed of water phase, oil phase, dimethyl sulfate, K 2 S 2 O 6 , Na 2 S 2 O 5 And the adduct; the volume ratio of the water phase to the oil phase is 0.75~0.78:0.22~0.25, the molar ratio of dimethyl sulfate to the adduct is 1:1.2~1.6, the adduct and K 2 S 2 O 6 The mass ratio is 2000:1~2, the adduct and Na 2 S 2 O 5 The mass ratio of the adduct is 2000:0.5-1, and the addition amount of the adduct is 20%-35% of the total mass of the water phase and the oil phase; the adduct is composed of a 30% mass concentration of dimethylamine aqueous solution and mass A 36% aqueous formaldehyde solution is prepared by mixing and stirring at a mass ratio of 1:1.2 to 1.6 for 5 to 10 minutes; the pH of the water phase is 7.8 to 9.8, and the solute is composed of acrylamide, sodium acrylate, and dimethyl-diallyl Ammonium chloride, magnesium-aluminum hydrotalcite colloid with 70% water content, disodium EDT...

specific Embodiment approach 2

[0012] Specific embodiment two: this embodiment is different from specific embodiment one in that the volume ratio of the water phase to the oil phase is 0.76~0.77:0.23~0.24. Others are the same as the first embodiment.

specific Embodiment approach 3

[0013] Specific embodiment three: This embodiment is different from specific embodiment one in that the volume ratio of the water phase to the oil phase is 0.77:0.23. Others are the same as the first embodiment.

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Abstract

A hydrotalcite type bridging agent and a preparation method thereof relates to a bridging agent. The bridging agent and the preparation method thereof solve the problem in the prior art that the bridging agent has high production cost and band stability. The bridging agent is made of water phase, oil phase, dimethyl sulfate and an addition compound. The preparation method comprises the following steps: adding water phase drop made of magnalium hydrotalcite colloid with 70 percent of moisture content, acrylamide, sodium acrylate, dimethyl-dially ammonium chloride, EDTA disodium and Na2S3O5 to the oil phase formed by mixing isoalkane solvent naphtha, dehumidifying sorbitol ester and ehumidifying sorbitol ester polyethenoxy ether; adding K2S2O6 and Na2S3O5; then adding the addition compound to react for 6 to 10 hours; and finally adding dimethyl sulfate with the mol ratio being 1:1.2 to 1.6 with the addition compound to react for 2 hours, namely the hydrotalcite type bridging agent is obtained. The hydrotalcite type bridging agent requires no assistance of a heating device, thereby saving the cost; and the hydrotalcite type bridging agent made has the state which cannot be changed along with time, and is noncombustible and inexplosive.

Description

Technical field [0001] The invention relates to a bridging agent and a preparation method thereof. Background technique [0002] In the prior art, the amount ratio of the oil phase to the water phase of the bridging agent is usually 2:5-7:2, but this kind of bridging agent is unstable, and the oil phase is often precipitated after being placed, and high-speed stirring is required before use. This operation Sometimes it will cause the demulsification of the bridging agent or the mechanical degradation of the components; even if the bridging agent uses 2.5 to 3.5 times the oil phase of the water phase, it still cannot solve the difficulty of the heat of polymerization, and it is in order to obtain the effective ingredients. Higher products are often realized by heating equipment, which is not only cumbersome and energy-consuming, leading to high production costs and expensive products, and the high oil content of this bridging agent makes transportation and storage costs due to fir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/14C02F1/52C08F220/56C08F2/22C08F2/44C08F6/14C08K3/22
Inventor 綦峥祁佩时
Owner HARBIN INST OF TECH