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Polymer emulsifying and thickening agent and preparation method thereof

A technology of emulsifying thickener and polymer, which is applied in the field of polymer emulsifying thickener and its preparation, can solve the problems of general emulsification effect of oily substances, weak lipophilicity, high production risk, etc., and achieve stable and controllable preparation method, Strong intermolecular force and good thickening effect

Active Publication Date: 2015-03-11
广州星业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the synthetic polymer emulsifying thickeners that have been studied more include homopolymers and copolymers of acrylic acid, methacrylic acid, 2-acrylamide-2-methylpropanesulfonic acid, acrylamide and acrylate, and acrylic acid polymer thickeners. Due to the weaker lipophilicity of the thickener, the emulsification effect on oily substances is relatively general; the lipophilicity of 2-acrylamide-2-methylpropanesulfonic acid and acrylamide increases slightly, but it is still weak in general, and acrylamide is weak due to its toxicity. Larger, the residual amount must be controlled at a very low level; acrylate thickeners have good lipophilicity, but relatively poor thickening performance
[0004] Chinese patent CN100418990C discloses a kind of acrylate emulsifying thickener and its production method, the viscosity of its 2% white pulp is 2400 centipoise, and the viscosity is relatively low; Chinese patent CN101974134A discloses a kind of associative acrylate thickener and Its preparation method and application, the polymer prepared in its embodiment 3 has the highest viscosity, 3% viscosity is 9500mpa.s (NDJ-1, 3# rotor, 6r / min), the viscosity is also on the low side; Chinese patent CN103183765A discloses a The preparation method of powdered polyacrylic acid thickener, the 0.5% aqueous solution of the sample prepared in the examples is 85-397s, and the viscosity is 1500-59000mPa.s. also higher

Method used

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  • Polymer emulsifying and thickening agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Dissolve 161g of acrylic acid, 50g of 2-acrylamide-2 methylpropanesulfonic acid and 6g of N,N-dimethyl-N-dodecylmethylallyl ammonium chloride in 500g of tap water, add 38.3g ammonia gas, control the temperature below 10°C, adjust the pH value to 6.5-6.8, then add 0.001g mercaptoethanol, 0.3g sodium edetate and 0.15g trimethylolpropane diacrylate, stir well, get the aqueous phase;

[0039] (2) 3.5g glyceryl stearate and 15.5g sorbitan monooleate are added in 205g white mineral oil, stir evenly, obtain oily phase;

[0040] (3) The water phase of step (1) and the oil phase of step (2) are deoxygenated with nitrogen for 25-30 min respectively, and under the protection of nitrogen, the water phase of step (1) is added dropwise to step (2) while stirring. ) in the oil phase, the stirring speed is 28000 rev / min, and the dropping time is 25-30min; then add 0.1g of azobisisobutyronitrile, then add 7g of 1% ammonium persulfate aqueous solution and 7g of 1% sodium metabisulfi...

Embodiment 2

[0043] (1) Dissolve 100g of methacrylic acid, 200g of acrylamide and 3g of N,N-dimethyl-N-tetradecylmethylallyl ammonium chloride in 455g of deionized water, add 17.8g of ammonia gas, and control The temperature is lower than 10°C, adjust the pH value to 5.5-5.8, then add 0.00016g of mercaptoacetic acid, 0.4g of sodium diethylenetriaminepentaacetate and 0.1g of pentaerythritol triallyl ether, and stir evenly to obtain an aqueous phase;

[0044] (2) Add 2.1g of fatty alcohol polyoxyethylene ether-3 and 15g of sorbitan monooleate into 200g of heterogeneous white mineral oil, and stir evenly to obtain an oil phase;

[0045] (3) The water phase of step (1) and the oil phase of step (2) are deoxygenated with nitrogen for 35-40 min respectively, and under the protection of nitrogen, the water phase of step (1) is added dropwise to step (2) while stirring. ) in the oil phase, the stirring speed is 1000 rev / min, and the dropping time is 5-7min; then add 0.4g of azobisisovaleronitrile, a...

Embodiment 3

[0048] (1) Dissolve 100g of acrylic acid, 174g of vinylpyrrolidone and 1.4g of N,N-dimethyl-N-dodecylmethylallyl ammonium chloride in 314g of distilled water, add 66.3g of sodium carbonate, and control the temperature Below 10°C, adjust the pH value to 6.0-6.5, then add 0.01g of mercaptoethanol, 2g of sodium ethylenediaminetetraacetate and 0.95g of polyethylene glycol diacrylate, and stir evenly to obtain an aqueous phase;

[0049] (2) 3.3g of sorbitan monooleate was added in 400g of polyisobutene, and stirred evenly to obtain an oil phase;

[0050] (3) The water phase of step (1) and the oil phase of step (2) are deoxygenated with nitrogen for 25-30 min respectively, and under the protection of nitrogen, the water phase of step (1) is added dropwise to step (2) while stirring. ) in the oil phase, the stirring speed is 100 rpm, and the dropping time is 25-30min; add 0.5g of azobisisobutyronitrile, and then dropwise add 3g of 1% tert-butyl hydroperoxide aqueous solution and 3g ...

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Abstract

The invention discloses a polymer emulsifying and thickening agent and a preparation method thereof. The polymer emulsifying and thickening agent contains a plurality of polymerization monomers, wherein each polymerization monomer contains the following components in percentage by mass: 30.0-99.9% of anionic monomers and 0.1-10.0% of amphoteric cationic monomers; the anionic monomers are one or at least two selected from acrylic acid, methacrylic acid and 2-acrylamide-2-methylacrylsulfonate; the amphoteric cationic monomers are one or at least two selected from N, N-dimethyl-N-dodecyl methylallyl ammonium chloride, N, N-dimethyl-N-tetradecyl methylallyl ammonium chloride, N, N-dimethyl-N-dodecyl allyl ammonium chloride and N, N-dimethyl-N-dodecyl tetradecyl allyl ammonium chloride; and the weight-average molecular weight of the polymer emulsifying and thickening agent is 2000-6000 thousands. The polymer emulsifying and thickening agent is good in thickening and emulsifying effects and salt resistance, high in swelling speed and low in preparation cost and can be produced on a large scale.

Description

technical field [0001] The invention belongs to the technical field of synthesis in polymer chemistry, and in particular relates to a polymer emulsification thickener and a preparation method thereof. Background technique [0002] The thickening system formulated with polymer emulsification thickener has the characteristics of good viscosity stability, good emulsification effect, thixotropy, high limit viscosity, etc., and the viscosity changes little with temperature and time, which makes polymer emulsification thickener It is more and more widely used in daily chemical, oil field, coating ink, adhesive, food additive and other industries. [0003] At present, the synthetic polymer emulsifying thickeners that have been studied more include homopolymers and copolymers of acrylic acid, methacrylic acid, 2-acrylamide-2-methylpropanesulfonic acid, acrylamide and acrylate, and acrylic acid polymer thickeners. Due to the weaker lipophilicity of the thickener, the emulsification ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F220/58C08F220/56C08F226/02C08F226/10C08F226/06C08F2/48C08F2/32
Inventor 黄育苗李忠军孟巨光
Owner 广州星业科技股份有限公司
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