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A kind of preparation method of acrylamide-containing polymer emulsion

A polymer emulsion, acrylamide technology, applied in the field of polymer chemistry, can solve problems such as fire, operator health effects, environmental pollution, etc., to meet the needs of adhesion, and achieve the effect of significant adhesion promotion.

Inactive Publication Date: 2016-04-06
杭州象信科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Zhang Yongqing developed an EVA surface treatment agent formulated with a graft copolymer solution of methyl methacrylate and acrylic acid and styrene-butadiene rubber to promote the adhesion of EVA soles [Journal of Huaqiao University (Natural Science Edition) 2000, 21 (4 ) 432-434], the toluene and other solvents in it will pollute the environment due to their volatility during use, and have a certain impact on the health of operators, and even cause fires
[CN102863607A] such as Zhang Anhong adopts hydroxyl-terminated polyolefin, dimethylol carboxylic acid, aliphatic diisocyanate etc. to prepare water-based EVA material surface treatment agent, but the cost of hydroxyl-terminated polyolefin is high
At the same time, the bonding surface treatment effect of some hard EVA materials is not enough, and it is necessary to develop a new type of EVA material surface treatment agent to meet the bonding requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Add 400 grams of toluene and 200 grams of ethyl acetate into a reaction flask equipped with a thermometer, a nitrogen device, a mechanical stirring device, a vacuum device and a condenser tube, then drop into 100 grams of chlorinated polypropylene, stir, and control The temperature is 60°C. After the chlorinated polypropylene is completely dissolved, fill the reaction flask with nitrogen, add 10 grams of methyl methacrylate, 10 grams of acrylic acid and 20 grams of methacrylamide, and add 1.5 grams of peroxide by dropwise after the temperature is raised to 85 °C. The mixed solution of benzoyl and 10 grams of vinyl acetate, carries out polyreaction 3 hours, obtains chlorinated polypropylene grafting solution;

[0023] (2) Cool the chlorinated polypropylene grafting solution to 50°C, remove 50% of the solvent in the system by distillation under reduced pressure, then add 10wt% triethylamine aqueous solution until the pH value of the system is 6.5, and react for 0.5 ho...

Embodiment 2

[0025] (1) Add 420 grams of toluene and 220 grams of ethyl acetate into a reaction flask with a thermometer, a nitrogen device, a mechanical stirring device, a vacuum device and a condenser, then drop into 100 grams of chlorinated polypropylene, stir, and control The temperature was 62°C. After the chlorinated polypropylene is completely dissolved, fill the reaction flask with nitrogen, add 12 grams of methyl methacrylate, 15 grams of methacrylic acid and 22 grams of N-methylol acrylamide, and use dropwise addition after heating up to 86 ° C Add the mixed solution of 1.6 gram benzoyl peroxide and 11 gram vinyl acetate, carry out polymerization reaction 3.5 hours, obtain chlorinated polypropylene grafting solution;

[0026] (2) Cool the chlorinated polypropylene grafting solution to 51°C, remove 55% of the solvent in the system by distillation under reduced pressure, then add 10wt% dimethylaminoethanol aqueous solution until the pH value of the system is 7.0, and react for 40 m...

Embodiment 3

[0028] (1) Add 450 grams of toluene and 250 grams of ethyl acetate into a reaction flask equipped with a thermometer, a nitrogen device, a mechanical stirring device, a vacuum device and a condenser tube, then drop into 100 grams of chlorinated polypropylene, stir, and control The temperature was 65°C. After the chlorinated polypropylene is completely dissolved, fill the reaction flask with nitrogen, add 15 grams of methyl methacrylate, 18 grams of methacrylic acid and 24 grams of methacrylamide, and add 1.8 grams of The mixed solution of benzoyl peroxide and 12 grams of vinyl acetate, carries out polymerization reaction 4 hours, obtains chlorinated polypropylene grafting solution;

[0029] (2) Cool the chlorinated polypropylene grafting solution to 52°C, remove 60% of the solvent in the system by distillation under reduced pressure, then add 10wt% triethylamine aqueous solution to the pH value of the system to 7.5, and react for 50 minutes; under high-speed stirring Graduall...

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Abstract

The invention relates to a preparation method of acrylamide-containing polymer emulsion. The preparation method comprises the steps of adding toluene, ethyl acetate and chlorinated polypropylene to a reaction kettle, stirring the materials, and controlling the temperature to be 60-80 DEG C; adding methyl methacrylate, an acrylic monomer and an acrylamide monomer; after heating to 85-95 DEG C, adding a vinyl acetate solution of benzoyl peroxide, and carrying out polymerization for 3-5 hours; carrying out reduced pressure distillation at 50-60 DEG C to remove 50-80% of solvents, then adding a neutralizing agent until the PH value of the system is 6.5-8.5, and carrying out salt forming reaction for 0.5-1 hour; gradually adding deionized water at 50-60 DEG C under high speed stirring, finally adding polyvinylpyrrolidone and stirring the materials, thus obtaining the acrylamide-containing polymer emulsion. The acrylamide-containing polymer emulsion prepared by the method has obvious bonding acceleration effects on EVA (ethylene-vinyl acetate copolymer) materials, and can meet the bonding requirements of hard EVA materials.

Description

technical field [0001] The invention belongs to the technical field of polymer chemistry, and relates to a preparation method of a polymer emulsion, in particular to a preparation method of an acrylamide-containing polymer emulsion used for surface treatment of EVA materials. Background technique [0002] EVA (ethylene-vinyl acetate copolymer) foam material is widely used in sole materials, especially the soles of travel shoes, due to its good elasticity, light weight, strong air permeability, easy processing, easy coloring, non-slip, and low cost. However, the polarity of EVA is weak, and the affinity between neoprene adhesives and polyurethane adhesives with strong polarity is poor, so surface treatment is required. The surface treatment agent can be regarded as a bridging agent between the adhered material and the adhesive. Its function is to remove the dirt, oil, and processing aids on the surface of the adherend; Layer a new surface layer to change the surface polarity...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F289/00C08F220/14C08F220/06C08F220/56C08F218/08C08F4/34C08L51/00C08L39/06
Inventor 聂秋林
Owner 杭州象信科技有限公司
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