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Composition of waterborne laminating adhesive and method for preparing same

A technology of water-based laminating glue and softening water, which is applied in the field of laminating glue, can solve the problems of health damage to operators, poor water resistance and alkali resistance, inconvenient transportation and storage, etc., and achieve good gloss, fast drying speed, ideal effect

Inactive Publication Date: 2010-07-14
CHANGZHOU INST OF CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem of solvent-based laminating adhesives is that they still use a large amount of toxic solvents and thinners such as toluene and xylene, which not only cause serious damage to the health of the operator, but also are flammable, explosive, and extremely inconvenient for transportation and storage.
Water-emulsion laminating adhesive uses water as the continuous phase, which is low in cost, environmentally friendly, and widely used, but has low initial adhesion, poor water resistance and alkali resistance, and low bonding strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Formula: (unit: g)

[0022] Reactor: demineralized water 15 polyvinyl alcohol 1 sodium bicarbonate 0.5

[0023] Initiating tank: demineralized water 10 ammonium persulfate 0.2

[0024] Pre-emulsification kettle: emulsified water 30 vinyl acetate 10 butyl acrylate 20 isooctyl acrylate 8 acrylic acid 2 hydroxypropyl acrylate 1.5 dodecyl mercaptan 0.2 sodium dodecylbenzene sulfate 1.1 nonylphenol polyoxyethylene ether 0.7

[0025] Steps:

[0026] The raw materials in the reaction kettle are used as the bottom liquid, and then the temperature of the reaction kettle is raised to 80-90°C with stirring, and the temperature is kept for 30-60 minutes; at the same time, the pre-emulsification kettle is started, and the raw materials in the pre-emulsification kettle are emulsified and stirred for 30 minutes; The trigger solution is prepared;

[0027] Use two constant flow metering pumps to pump the initiator solution in the pre-emulsification kettle and the initiator tank into ...

Embodiment 2

[0037] Formula: (unit: g)

[0038] Reactor: demineralized water 20 polyvinyl alcohol 1.2 ammonium bicarbonate 0.6

[0039] Trigger tank: demineralized water 10 potassium persulfate 0.3

[0040] Pre-emulsification kettle: softened water 25 vinyl acetate 15 ethyl acrylate 17 isooctyl acrylate 6 acrylic acid 2 hydroxyethyl acrylate 0.9 dodecyl mercaptan 0.8 sodium dodecylbenzene sulfonate 1.3 nonylphenol polyoxyethylene ether 0.5

[0041] The preparation method is the same as in Example 1.

[0042] The performance indicators of the environmental protection water-based laminating adhesive prepared by the above formula according to the above method are as follows:

[0043] Appearance: Milky white or viscous liquid with blue light

[0044] pH value: 6~7

[0045] Solid content: 45±1

[0046] Stability: >1

[0047] Viscosity: 500~1000mpas

[0048] Solvent Resistance: No Wrinkle, No Blister

[0049] Peel strength: 0.10KN / m

Embodiment 3

[0051] Formula: (unit: g)

[0052] Reactor: demineralized water 20 polyvinyl alcohol 1.1 pH buffer regulator 0.4

[0053] Initiating tank: demineralized water 15 ammonium persulfate 0.1

[0054] Pre-emulsification tank: softened water 20 methyl methacrylate 18 ethyl acrylate 14 isooctyl acrylate 6 acrylic acid 1.5 hydroxypropyl acrylate 2 dodecyl mercaptan 0.2 sodium dodecylbenzene sulfate 1.4 nonylphenol polyoxyethylene Ether 0.4

[0055] The preparation method is the same as in Example 1.

[0056] The performance indicators of the environmental protection water-based laminating adhesive prepared by the above formula according to the above method are as follows:

[0057] Appearance: Milky white or viscous liquid with blue light

[0058] pH value: 6~7

[0059] Solid content: 45±1

[0060] Stability: >1

[0061] Viscosity: 500~1000mpas

[0062] Solvent Resistance: No Wrinkle, No Blister

[0063] Peel strength: 0.14KN / m

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Abstract

The invention relates to a composition of waterborne laminating adhesive and a method for preparing the same. The waterborne laminating adhesive comprises the following components in percentage by weight: 10 to 20 percent of soft monomer, 25 to 30 percent of hard monomer, 2 to 4 percent of functional auxiliary agent, 0.5 to 2 percent of emulsifier, 0.08 to 0.3 percent of initiator, 0.2 to 0.6 percent of Ph buffer regulator and 0.5 to 1.2 percent of functional assistant and 45 to 55 percent of softened water. Because a waterborne medium is used, so that no pollution is caused in the production process, damages caused by organic solvents to production persons and users are eliminated, and the fire risks in production and use processes are greatly reduced. The waterborne laminating adhesive has the advantages of higher bonding force, bonding strength, water resistance and solvent resistance, complete water base, no organic solvents such as benzene and ethylene dioxide, no toxin nor harmlessness, high product applicability, unnecessary modification of the original equipment, the complete replacement of the solvent-type laminating adhesive, no metachromatism with gold powder, the suitability for production of high-grade products, easily bought raw materials, simple production process, easy operation and the like.

Description

technical field [0001] The invention relates to a laminating adhesive used for bonding paper-plastic composite materials, in particular to a composition and a preparation method of a water-based laminating adhesive. Background technique [0002] Paper-plastic composite uses adhesives to combine polypropylene film or polyester film with paper printing sheets, so that the printed matter is beautiful, bright, and has the characteristics of waterproof, moisture-proof, folding resistance, and wear resistance. There are two types of paper-plastic laminating adhesives currently on the market: solvent-based and water-emulsion-based. The main problem of solvent-based laminating adhesives is that they still use a large amount of toxic solvents and thinners such as toluene and xylene, which not only cause serious damage to the health of operators, but also are flammable, explosive, and extremely inconvenient for transportation and storage. The water-emulsion type laminating adhesive u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/04
Inventor 蒋银峰王公应
Owner CHANGZHOU INST OF CHEM
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