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Rapidly-dry super-strong freezing-resisting white emulsion

A fast drying and antifreeze technology, applied in the field of white latex, can solve the problems of emulsion damage, easy freezing and high price, and achieve the effect of harmonious home environment, strong antifreeze performance and special antifreeze performance.

Inactive Publication Date: 2015-08-26
GANZHOU JINDONGMEN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The so-called white latex is polyvinyl acetate emulsion. Due to the complicated preparation and operation process, large investment in equipment, and the high price of vinyl acetate monomer, the production cost of white latex is relatively high.
The disadvantages of polyvinyl acetate emulsion adhesives are poor water resistance and moisture resistance, easy to absorb moisture in humid air, and creep phenomenon will occur when used at high temperature, which will reduce the bonding strength; it is easy to freeze when stored below -5°C, causing the emulsion to be damaged. destroy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Composed of the following components by mass: water, 1000kg, PVA2099, 20kg, PVA1788, 50kg, defoamer, 0.5kg, alkylphenol polyoxyethylene ether, 5kg, vinyl acetate, 500kg, ammonium persulfate, 1kg , NaHCO 3 , 5kg, dibutyl phthalate, 30kg;

[0018] a. Put water into the reaction kettle and start to heat up. When the temperature reaches 30-40°C, slowly put in PVA2099, PVA1788, and defoamer to start to dissolve;

[0019] b. Raise the temperature to 95-98°C, keep warm for 3 minutes after PVA2099 and PVA1788 are completely dissolved, add alkylphenol polyoxyethylene ether and stir for 40 minutes, then cool down;

[0020] c. When the temperature drops to 80-75°C, start to add vinyl acetate solution dropwise, first add a small amount, and after 30 minutes, add ammonium persulfate solution. The ammonium sulfate solution is added in six times, and the last addition is completed and kept for 1 hour. , the total dropping time of the vinyl acetate solution is not less than 6 hours; ...

Embodiment 2

[0024] Composed of the following components by mass: water, 1200kg, PVA2099, 30kg, PVA1788, 60kg, defoamer, 1kg, alkylphenol polyoxyethylene ether, 8kg, vinyl acetate, 650kg, ammonium persulfate, 1.6kg , NaHCO 3 , 8kg, dibutyl phthalate, 40kg.

[0025] a. Put water into the reaction kettle and start to heat up. When the temperature reaches 30-40°C, slowly put in PVA2099, PVA1788, and defoamer to start to dissolve;

[0026] b. Raise the temperature to 95-98°C, keep warm for 3 minutes after PVA2099 and PVA1788 are completely dissolved, add alkylphenol polyoxyethylene ether and stir for 40 minutes, then cool down;

[0027] c. When the temperature drops to 80-75°C, start to add vinyl acetate solution dropwise, first add a small amount, and after 30 minutes, add ammonium persulfate solution. The ammonium sulfate solution is added in six times, and the last addition is completed and kept for 1 hour. , the total dropping time of the vinyl acetate solution is not less than 6 hours; ...

Embodiment 3

[0031] It consists of the following components in parts by mass: water, 1400kg, PVA2099, 40kg, PVA1788, 70kg, defoamer, 1.5kg, alkylphenol polyoxyethylene ether, 10kg, vinyl acetate, 800kg, ammonium persulfate, 2.5 kg, NaHCO 3 , 10kg, dibutyl phthalate, 50kg;

[0032] a. Put water into the reaction kettle and start to heat up. When the temperature reaches 30-40°C, slowly put in PVA2099, PVA1788, and defoamer to start to dissolve;

[0033] b. Raise the temperature to 95-98°C, keep warm for 3 minutes after PVA2099 and PVA1788 are completely dissolved, add alkylphenol polyoxyethylene ether and stir for 40 minutes, then cool down;

[0034] c. When the temperature drops to 80-75°C, start to add vinyl acetate solution dropwise, first add a small amount, and after 30 minutes, add ammonium persulfate solution. The ammonium sulfate solution is added in six times, and the last addition is completed and kept for 1 hour. , the total dropping time of the vinyl acetate solution is not les...

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Abstract

The invention refers to the field of building materials, and provides a rapidly-dry super-strong freezing-resisting white emulsion. The rapidly-dry super-strong freezing-resisting white emulsion is composed of the following components in part by mass: 1000-1400 parts of water, 20-40 parts of PVA 2099, 50-70 parts of PVA 1788, 0.5-1.5 parts of defoaming agent, 5-10 parts of alkylphenol polyoxyethylene ether, 500-800 parts of vinyl acetate, 1-2.5 parts of ammonium persulfate, 5-10 parts of NaHCO3, and 30-50 parts of dibutyl phthalate. The rapidly-dry super-strong freezing-resisting white emulsion takes PVA and VAC as the main raw materials, and free from poison, extraneous odour and harm to human body. It makes the user's domestic environment keep harmony and health. The white emulsion is quick in drying, strong in adhering force, high in viscosity, super strong in freezing resistance, good in water resistance, and is environmental-friendly type bonding. Meanwhile, the white emulsion has multiple using methods of direct bonding, thinning by water, natural drying, heating and drying. The white emulsion is applicable to furniture manufacturing industry and decorative industry, and has very strong bonding force to fiber board, decorative board, woodware and others; besides, the white emulsion has multiple purposes in paper product, printing textile, printing and dyeing, building, and the like.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a white latex. Background technique [0002] White latex is one of the water-soluble adhesives with the widest application, the largest amount, and the longest history. It is a thermoplastic adhesive prepared by polymerization of vinyl acetate monomer under the action of an initiator. It can be cured at room temperature, cured quickly, and has high bonding strength. The bonding layer has good toughness and durability and is not easy to age. [0003] The so-called white latex is polyvinyl acetate emulsion. Due to the complicated preparation and operation process, large investment in equipment, and the high price of vinyl acetate monomer, the production cost of white latex is relatively high. The disadvantages of polyvinyl acetate emulsion adhesives are poor water resistance and moisture resistance, easy to absorb moisture in humid air, and creep phenomenon will occur when used a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J131/04C09J129/04C09J11/04C09J11/06C08F118/08
Inventor 阳晓群
Owner GANZHOU JINDONGMEN CHEM
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