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Prepn of water-base composite acrylic adhesive

A water-based acrylic and composite adhesive technology, applied in the direction of adhesive types, ester copolymer adhesives, etc., can solve the problems of large surface tension, affect the surface bonding of materials, affect the bonding strength, etc., and achieve stable emulsion reaction, The effect of high bonding strength and high stability

Inactive Publication Date: 2006-03-01
BEIJING COMENS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Acrylic emulsion adhesive is a relatively commonly used water-based adhesive, but the application of this water-based adhesive is still very limited at present. Additives and other additives will precipitate or migrate to the surface after film formation, which will affect the adhesion of the material surface; in addition, the surface tension of water is relatively high, resulting in poor wettability between the glue and the surface of the film, which will also affect the bonding strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1 gets preparation raw material by following component and parts by weight:

[0020] Ethyl acrylate 41

[0021] Butyl acrylate 20

[0022] Methyl methacrylate 33

[0023] Butyl methacrylate 2.5

[0024] Acrylic 2

[0025] Hydroxypropyl Acrylate 1.5

[0026] Deionized water 150

[0027] Sodium isopropyl naphthalene sulfonate 0.3

[0028] Diisooctyl sulfonate sodium succinate 0.1

[0029] (NH4) 2 S 2 o 8 0.6

[0030] NaHCO 3 0.25

[0031] Dodecyl Mercaptan 0.3

[0032] Synthesis method: stir and emulsify 50% of the total amount of deionized water and 90% of the emulsifier, put in 50% of the total amount of mixed monomers for pre-emulsion to obtain pre-emulsion I, and mix the remaining deionized water, emulsifier and reaction Put the monomer into the polymerization tank for emulsification to obtain emulsion II, raise the temperature of emulsion II to 70-75°C, add a total of 20% ammonium persulfate ...

example 2

[0034] Example 2 gets the raw materials for preparation by following components and parts by weight:

[0035] Butyl acrylate 50

[0036] Methyl acrylate 6

[0037] Methyl methacrylate 41

[0038] Methacrylic acid 1

[0039] Hydroxyethyl Acrylate 2

[0040] Deionized water 120

[0041]Sodium butylnaphthalene sulfonate 0.25

[0042] Sodium dipentyl succinate 0.1

[0043] (NH4) 2 S 2 o 8 0.8

[0044] NaHCO 3 0.30

[0045] Dodecyl Mercaptan 0.25

[0046] Synthetic method is the same as example 1, and product performance test result is shown in Table 1

[0047] project

example 3

[0048] Example 3 gets the raw materials for preparation by following components and parts by weight:

[0049] Isooctyl acrylate 40

[0050] Methyl acrylate 10

[0051] Butyl acrylate 10

[0052] Ethyl acrylate 5

[0053] Methyl methacrylate 30

[0054] Methacrylic acid 1

[0055] Hydroxyethyl methacrylate 2

[0056] Hydroxypropyl Acrylate 2

[0057] Deionized water 100

[0058] Sodium Methylene Dimethyl Naphthalene Sulfonate 0.5

[0059] Sodium diisooctyl sulfonate 0.05

[0060] (NH4) 2 S 2 o 8 0.8

[0061] NaHCO 3 0.30

[0062] Dodecyl Mercaptan 0.5

[0063] Preparation method: Stir and emulsify the total amount of 90% deionized water and 50% emulsifier, put in 40% of the total amount of mixed monomers for pre-emulsification to obtain pre-emulsion I, and mix the remaining deionized water, emulsifier and reaction Put the monomer into the polymerization tank for emulsification to obtain emulsion II, raise th...

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PUM

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Abstract

The water-base composite acrylic adhesive is prepared through first pre-emulsifying partial deionized water, partial emulsifier and partial reaction monomer to obtain the pre-emulsion I; pre-emulsifying the rest deionized water, emulsifier and reaction monomer to obtain the pre-emulsion II; adding partial initiator to the pre-emulsion II for emulsion polymerization to prepare seed, adding molecular weight regulator, dropping the pre-emulsion I, adding rest initiator, and controlling the pH value in the required range to complete the reaction and to obtain the water-base composite acrylic adhesive. The preparation process has low emulsifier consumption and stable emulsion reaction, and the product has high stability and high adhesion strength, and may be used in the adhesion of plastic film and aluminum film.

Description

technical field [0001] The invention belongs to the technical field of adhesives for plastic film compounding of food packaging bags, and in particular relates to a preparation method of emulsion polymerization water-based acrylic adhesives. Background technique [0002] For a long time, the adhesives used for compounding food packaging bags have all used organic solvent-based adhesives, which are toxic to the environment and the human body. The water-based composite adhesive uses water as a solvent, which is completely non-toxic and harmless. It is an environmentally friendly adhesive and is very suitable for the compounding of food packaging materials. The main advantages of water-based composite adhesives are: (1) There will be no solvent residue in the composite film, and the odor of residual solvent in packaging materials will be reduced; (2) No solvent recovery device is required, which is conducive to the sanitation of the working environment in the factory; (3) There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08
Inventor 陈小峰李延科沈峰邓煜东
Owner BEIJING COMENS NEW MATERIALS
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