Aqueous acrylic emulsion, aqueous adhesive for pearlized film composite materials and preparation method thereof

A technology of water-based acrylic and acrylic emulsion, applied in the direction of adhesive type, ester copolymer adhesive, etc., can solve the problems of environmental pollution, secondary pollution, workers' physical injury, etc., and achieve high bonding strength and low coating Viscosity, easy-to-use effect

Inactive Publication Date: 2010-06-02
BEIJING COMENS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the pearlescent film composite adhesives that can be selected are solvent-based polyurethane adhesives. During their use, many solvents volatilize into the environment, pollute the environment, and cause harm to the workers' bodies. The residual solvent in the process also poses a risk of secondary pollution to the packaged food

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment one (aqueous acrylic acid emulsion embodiment)

[0020] The first embodiment provides a water-based acrylic emulsion, which is used in the preparation of pearlescent film composite materials for flexible packaging materials. Acrylic functional monomers are polymerized under the action of water, emulsifiers, initiators, buffers and pH regulators; wherein, the amount of the emulsifier is three 0.5% to 5.0% of the total weight of the initiator; the amount of the initiator is 0.4% to 1.0% of the total weight of the acrylic hard monomer, the acrylic soft monomer and the acrylic functional monomer; the amount of the buffer is 0.4% to 1.0% of the acrylic hard monomer 0.1% to 0.6% of the total weight of the three acrylic acid monomers, acrylic soft monomers and acrylic functional monomers; 2%; the amount of water used is 1 to 1.5 times the total weight of the acrylic hard monomer, acrylic soft monomer and acrylic functional monomer.

[0021] In the above-mentioned ...

Embodiment 2

[0033] Embodiment two (aqueous acrylic acid emulsion embodiment)

[0034] Present embodiment two provides a kind of water-based acrylic emulsion, and this water-based acrylic emulsion can be used to prepare the water-based adhesive that pearlescent film composite material is used, and this acrylic emulsion is made up of following components (by weight):

[0035] Methyl acrylate 10

[0036] Methyl methacrylate 25

[0037] Ethyl acrylate 20

[0038] Butyl acrylate 40

[0039] Methacrylic acid 3

[0040] Hydroxyethyl Acrylate 2

[0041] Emulsifier A-103 (Shanghai Zhongcheng Chemical Company) 0.8

[0042] Emulsifier EFS-1310 (Shanghai Zhongcheng Chemical Company) 1.2

[0043] Ammonium persulfate (initiator) 0.6

[0044] Sodium bicarbonate (buffer) 0.2

[0045] Ammonia (PH regulator) 1.6

[0046] Deionized water 150.

[0047] The preparation method of above-mentioned aqueous acrylic acid emulsion specifically comprises:

[0048] Take each raw material according to the abov...

Embodiment 3

[0051] Embodiment three (aqueous acrylic acid emulsion embodiment)

[0052] Present embodiment three provides a kind of water-based acrylic emulsion, and this water-based acrylic emulsion can be used to prepare the water-based adhesive that pearlescent film composite material is used, and this acrylic emulsion is made up of following components (by weight):

[0053] Vinyl acetate 12

[0054] Methyl methacrylate 26

[0055] Ethyl acrylate 26

[0056] Isooctyl acrylate 32

[0057] Acrylic 2

[0058] Hydroxyethyl methacrylate 2

[0059] Emulsifier A-103 (Shanghai Zhongcheng Chemical Company) 1.0

[0060] Emulsifier EFS-1310 (Shanghai Zhongcheng Chemical Company) 1.6

[0061] Sodium persulfate (initiator) 0.8

[0062] Ammonium bicarbonate (buffer) 0.3

[0063] Ammonia (PH regulator) 1.4

[0064] Deionized water 120.

[0065] The preparation method of above-mentioned aqueous acrylic acid emulsion specifically comprises:

[0066] Take each raw material according to the ab...

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Abstract

The invention discloses an aqueous acrylic emulsion, an aqueous adhesive for pearlized film composite materials and a preparation method thereof, and belongs to the field of preparation of adhesive. The acrylic emulsion is polymerized from 20-40 wt% of acrylic acid hard monomer and 55-70 wt% of acrylic acid soft monomer and 1-5 wt% of acrylic acid functional monomer under the action of water, an emulsifying agent, an initiator, a buffering agent and a pH regulator. The invention also provides an aqueous adhesive and a preparation method thereof. The molecule segment of the film forming matter (acrylate copolymer) in the aqueous acrylic emulsion has various chemical groups, such as -OH, -COOH, -NH and the like; and the chemical groups can form various chemical bonds and hydrogen bonding acting force, and thereby having favorable adhering force for various composite substrates (plastic films, aluminum plating films, metal foils and the like). The polymer obtained by polymerization has higher molecular weight, lower coating viscosity and favorable levelling property; and thus, the polymer has high shear strength and initial strength and can achieve the best bonding strength without curing for a long time.

Description

technical field [0001] The invention belongs to the technical field of adhesive materials, and in particular relates to a water-based acrylic emulsion, a water-based adhesive for pearlescent film composite materials and a preparation method thereof. Background technique [0002] At present, the packaging of cold drinks in our country has been developed by leaps and bounds. Pearlescent films, especially BOPP (biaxially oriented polypropylene) pearlescent films, have been widely used in cold drink packaging materials. The reason why BOPP pearlescent film has become the new darling of cold drink packaging is mainly due to the excellent barrier properties of this material, and at the same time, a certain amount of CaCO is added to the film material during the actual production process. 3 And pearlescent pigments, which have a certain pearlescent effect and are very decorative. [0003] At present, most of the pearlescent film composite adhesives that can be selected are solvent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/06C08F220/28C08F218/08C08F212/08C09J133/08
Inventor 陈小锋沈峰邓煜东
Owner BEIJING COMENS NEW MATERIALS
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