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Hydrotalcite type bridge-building agent and method for preparing same

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

Inactive Publication Date: 2009-01-07
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 one: in this embodiment, the hydrotalcite type bridging agent is made of water phase, oil phase, dimethyl sulfate, K 2 S 2 o 6 、Na 2 S 2 o 5 and the adduct; wherein 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, and 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; Formaldehyde solution with a concentration of 36% is prepared by mixing and stirring for 5 to 10 minutes at a mass ratio of 1:1.2 to 1.6; the pH value of the aqueous phase is 7.8 to 9.8, and the solute is composed of acrylamide, sodium acrylate, dimethyl-diallyl ammonium chloride, magnesium aluminum hydrotalcite colloid with a water content of 70%, disodium EDTA and Na 2 S 2 o 5 Composition, the total mass...

specific Embodiment approach 2

[0012] Embodiment 2: This embodiment differs from Embodiment 1 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 in the first embodiment.

specific Embodiment approach 3

[0013] Embodiment 3: This embodiment differs from Embodiment 1 in that the volume ratio of the water phase to the oil phase is 0.77:0.23. Others are the same as in 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 bridging agent usually has an oil phase to water phase ratio of 2:5 to 7:2, but this bridging agent is unstable, and the oil phase often precipitates out after being placed, and high-speed stirring is required before use, and this operation Sometimes it will cause the demulsification of the bridging agent or cause the mechanical degradation of the components; even if this bridging agent uses 2.5 to 3.5 times the oil phase of the water phase, it still cannot solve the difficulty of deriving the heat of polymerization, and in order to obtain the active ingredient later Higher products are often realized by heating equipment, which is not only cumbersome but also consumes high energy, resulting in high production costs and expensive products, and this bridging agent has high oil content, which makes transportation costs and stora...

Claims

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Application Information

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