Production method of waterproof and freezing-tolerant white emulsion

A production method and white latex technology, applied in the field of white latex, can solve the problems of poor water resistance and heat resistance, easy gelation, etc., and achieve the effects of easy processing, high bonding strength, good toughness and durability

Inactive Publication Date: 2017-12-19
李淑存
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But the current conventional white latex is easy to gel at low temperature, and has poor water resistance and heat resistance.

Method used

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  • Production method of waterproof and freezing-tolerant white emulsion
  • Production method of waterproof and freezing-tolerant white emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of production method of waterproof freeze-resistant white latex, it is the following steps:

[0027] (1) Dibutyl phthalate and octanol are mixed, stirred to make it dissolve, for subsequent use, the mass ratio of dibutyl phthalate and octanol is 3:1;

[0028] (2) Add water to the jacketed reaction kettle, heat to 75°C, add polyvinyl alcohol under stirring, heat up to 90°C and keep warm until completely dissolved, the quality of the added dibutyl phthalate, polyvinyl alcohol, and water The ratio is 3:4:47.9;

[0029] (3) Inject cold water into the jacket of the reaction kettle to cool down the liquid in the kettle to 67°C, add vinyl acetate under stirring, the mass ratio of vinyl acetate to dibutyl phthalate is 44:3 ;

[0030] (4) Add the octanol solution of dibutyl phthalate to the reaction kettle, then add ammonium persulfate and stir well, and mix at 67°C for 1.5 hours to obtain white viscous vinyl acetate white latex. Packed in bottles or plastic bottles, t...

Embodiment 2

[0034] A kind of production method of waterproof freeze-resistant white latex, it is the following steps:

[0035] (1) Dibutyl phthalate and octanol are mixed, stirred to make it dissolve, for subsequent use, the mass ratio of dibutyl phthalate and octanol is 3:1;

[0036] (2) Add water to the jacketed reaction kettle, heat to 71°C, add polyvinyl alcohol under stirring, heat up to 90°C and keep warm until completely dissolved, the quality of the added dibutyl phthalate, polyvinyl alcohol, and water The ratio is 3:4:47.9;

[0037] (3) Inject cold water into the jacket of the reaction kettle to cool down the liquid in the kettle to 68°C, add vinyl acetate under stirring, the mass ratio of vinyl acetate to dibutyl phthalate is 44:3 ;

[0038] (4) Add the octanol solution of dibutyl phthalate to the reaction kettle, then add ammonium persulfate and stir well, and mix at 66°C for 1.3 hours to obtain white viscous vinyl acetate white latex. Packed in bottles or plastic bottles, t...

Embodiment 3

[0042] A kind of production method of waterproof freeze-resistant white latex, it is the following steps:

[0043] (1) Dibutyl phthalate and octanol are mixed, stirred to make it dissolve, for subsequent use, the mass ratio of dibutyl phthalate and octanol is 3:1;

[0044] (2) Add water to the jacketed reaction kettle, heat to 70°C, add polyvinyl alcohol under stirring, heat up to 90°C and keep warm until completely dissolved, the quality of the added dibutyl phthalate, polyvinyl alcohol, and water The ratio is 3:4:47.9;

[0045] (3) Inject cold water into the jacket of the reaction kettle to cool down the liquid in the kettle to 68°C, add vinyl acetate under stirring, the mass ratio of vinyl acetate to dibutyl phthalate is 44:3 ;

[0046] (4) Add the octanol solution of dibutyl phthalate to the reaction kettle, then add ammonium persulfate and stir well, and mix at 69°C for 1.5 hours to obtain white viscous vinyl acetate white latex. Packed in bottles or plastic bottles, t...

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Abstract

The invention discloses a production method of a waterproof and freezing-tolerant white emulsion. The production method comprises the following steps: mixing dibutyl phthalate with octyl alcohol, and stirring till the dibutyl phthalate and the octyl alcohol are dissolved for later use; adding water into a reaction kettle with a jacket, heating to 60 to 80 DEG C, adding polyvinyl alcohol during stirring, heating to 90 DEG C, and preserving the heat till the polyvinyl alcohol is completely dissolved; injecting cold water into the jacket of the reaction kettle to cool the liquid in the kettle to 66 to 69 DEG C, and adding vinyl acetate during stirring; adding the octyl alcohol solution of the dibutyl phthalate into the reaction kettle, then adding ammonium persulfate, performing uniform stirring, mixing the components at 66 to 69 DEG C for 1 to 2 hours, so as to obtain white viscous vinyl acetate white emulsion, and packaging the white emulsion with a glass bottle or a plastic bottle. According to the production method of the waterproof and freezing-tolerant white emulsion, the production process of common white emulsion is improved; by adding of a modifier, the modified white emulsion which is not gelatinized at low temperature is obtained; when compared with the common white emulsion, the modified white emulsion has the advantage that the water resistance, the heat resistance and the freezing tolerance are all obviously improved.

Description

technical field [0001] The invention relates to a production method of waterproof and freeze-resistant white latex, which belongs to the technical field of 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] But the current conventional white latex is easy to gel at low temperature, and has poor water resistance and heat resistance. Contents of the invention [0004] In view of this, the present invention provides a kind of production method of waterproof and freeze-resistant white latex, improves the production process of ordinary white latex, adds raw material components such a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J131/04C09J11/06C08F118/08C08F2/44C09D131/04C09D5/02
CPCC09J131/04C08F2/44C08F118/08C08K5/05C08K5/12C09D5/022C09D131/04C09J11/06
Inventor 李淑存郭春秀姬磊李伟铭
Owner 李淑存
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