Preparation method of acrylic acid organic silicon soap-free copolymer nano-emulsion

A nano-emulsion and organosilicon technology is applied in the field of preparation of polymer emulsions to achieve the effects of improving water resistance, high bonding strength and reducing water absorption

Active Publication Date: 2016-06-22
江苏三瑞生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Microemulsions, like emulsions, form a stable oil-water mixed system under the action of emulsifiers, but there are obvious differences between the two

Method used

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  • Preparation method of acrylic acid organic silicon soap-free copolymer nano-emulsion
  • Preparation method of acrylic acid organic silicon soap-free copolymer nano-emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 230kg deionized water, 7.8kg allyl alkyl alcohol ether sulfate SR-1025, 2.2kg acrylamide into the pre-emulsification tank, then add 2.1kg methacrylic acid (AA), 106kg isooctyl acrylate (2- EHA), 124kg methyl methacrylate (MMA), and 1.3kg n-amyl alcohol are dispersed at high speed to prepare pre-emulsion A.

[0033] Add 504.2kg deionized water, 8.2kg allyl alkyl alcohol ether sulfate SR-1025, 1.2kg n-amyl alcohol in the reactor, then heat to 83~85°C, prepare 1.56kg pre-emulsion ( A) and initiator potassium persulfate (KPS) 0.64kg+18.3kg deionized aqueous solution was added to the reactor, the reaction temperature was kept at 85-87°C, and the reaction process was controlled within 10 minutes to prepare the seed emulsion.

[0034] Simultaneously drop the pre-emulsion and initiator solution (potassium persulfate KPS1.47kg+125.9kg deionized aqueous solution) into the reactor, continue to ensure that the temperature of the reactor is 86-88°C, and the dropping time is cont...

Embodiment 2

[0039] Add 230kg deionized water, 7.8kg methacrylamide isopropyl sulfonic acid AMPS-2404, 2.2kg acrylamide into the pre-emulsification tank, then add 2.1kg methacrylic acid (AA), 106kg isooctyl acrylate (2- EHA), 124kg methyl methacrylate (MMA), and 1.3kg n-propanol were dispersed at high speed to obtain pre-emulsion A.

[0040]Add 504.2kg of deionized water, 8.2kg of methacrylamide isopropylsulfonic acid AMPS-2404, 1.2kg of n-propanol into the reaction kettle, then heat to 83-85°C, and prepare 1.56kg of pre-emulsion ( A) and the initiator sodium persulfate 0.64kg+18.3kg deionized aqueous solution were added to the reactor, the reaction temperature was kept at 85-87°C, the reaction process was controlled within 15 minutes, and the seed emulsion was obtained.

[0041] Simultaneously drop the pre-emulsion and initiator solution (sodium persulfate 1.47kg + 125.9kg deionized aqueous solution) into the reactor, keep the temperature of the reactor at 86-88°C, and control the droppin...

Embodiment 3

[0046] Add 230kg deionized water, 7.8kg allyl alkyl sulfosuccinate M-12S, 2.2kg acrylamide into the pre-emulsification tank, then add 2.1kg methacrylic acid (AA), 106kg isooctyl acrylate ( 2-EHA), 124kg methyl methacrylate (MMA), and 1.3kg n-butanol were dispersed at high speed to obtain pre-emulsion A.

[0047] Add 504.2kg of deionized water, 8.2kg of allyl alkyl sulfosuccinate M-12S, and 1.2kg of n-butanol into the reaction kettle, and then heat it to 83-85°C to prepare 1.56kg of pre-emulsified Solution (A) and initiator potassium persulfate (KPS) 0.64kg+18.3kg deionized aqueous solution were added to the reactor, the reaction temperature was kept at 85-87°C, and the reaction process was controlled within 5 minutes to prepare the seed emulsion.

[0048] Simultaneously drop the pre-emulsion and initiator solution (potassium persulfate KPS1.47kg+125.9kg deionized aqueous solution) into the reaction kettle, continue to ensure that the temperature of the reaction kettle is 86-88...

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Abstract

The invention discloses a preparation method of an acrylic acid organic silicon soap-free copolymer nano-emulsion. The method is characterized by using an unsaturated monomer, organic silicon, a reaction type emulsifier, a co-emulsifier, an initiator and water as raw materials, utilizing soap-free polymerization and micro-emulsion polymerization processes, using the reaction type emulsifier containing olefin bonds, and introducing long C-chain alcohol as the co-emulsifier to prepare the acrylic acid organic silicon soap-free copolymer nano-emulsion. Through the adoption of the micro-emulsion polymerization process, the introduction of long C-chain alcohol and the adoption of high-speed emulsifying mode, latex particles form ultra-fine micelles, and the polymerization is performed in the micelles under the effect of the initiator to finally obtain a nano-scale and isotropic emulsion finished product which is clear and transparent. Through the adoption of the soap-free polymerization process and the long C-chain emulsifier containing olefin bonds, the olefin bonds directly participate in the polymerization to be one part of the final latex particles, so that the final emulsion finished product does not contain free emulsifier, and the purity degree of the film after final film formation of the emulsion is guaranteed.

Description

technical field [0001] The invention relates to a preparation method of a polymer emulsion, in particular to a preparation method of an acrylic silicone soap-free copolymerized nanoemulsion. Background technique [0002] Microemulsion is an isotropic, thermodynamically stable transparent or translucent colloidal dispersion system composed of oil, water, emulsifier and co-emulsifier. The size of the dispersed phase is nanoscale and shorter than the wavelength of visible light. [0003] The concept of microemulsion polymerization was first proposed by Hoar and Schalmen in 1943. The difference is the introduction of co-emulsifiers in the emulsion polymerization system, and the use of microemulsion processes such as high-speed stirring, high-pressure homogenization, and ultrasonic dispersion. Microemulsions, like emulsions, form a stable oil-water mixed system under the action of emulsifiers, but there are significant differences between the two. Emulsion is a turbid unstable s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/06C08F220/56C08F216/14C08F220/58C08F228/02C08F2/24
CPCC08F2/24C08F220/14C08F220/06C08F220/56C08F216/1475C08F220/1808C08F228/02C08F220/585
Inventor 唐冬勤叶洲
Owner 江苏三瑞生物技术有限公司
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