Water-based polyacrylic emulsion laminating adhesive and preparation method thereof

A technology of water-based acrylic and laminating adhesive, which is applied in the direction of adhesive types, ester copolymer adhesives, etc., can solve the problems of insufficient bonding strength, poor initial tack, embossed wrinkling, etc., and achieve improved initial tack and bonding strength, improving low-temperature bonding performance, and improving the effect of bonding strength

Inactive Publication Date: 2011-08-03
NANTONG GAOMENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water-based emulsion adhesives have some defects in use, mainly manifested in insufficient bonding strength at low temperature, poor initial viscosity, poor stability; poor affinity to the ink layer, when the laminated paper is peeled off, the ink is difficult to remove Go, prone to light film phenomenon; poor post-processing performance, wrinkling or delamination when hitting bumps and embossing, etc.

Method used

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  • Water-based polyacrylic emulsion laminating adhesive and preparation method thereof
  • Water-based polyacrylic emulsion laminating adhesive and preparation method thereof
  • Water-based polyacrylic emulsion laminating adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] This embodiment provides a water-based acrylic emulsion laminating adhesive, which is made of monomers, emulsifiers, initiators, buffers, pH regulators, water-based additives and deionized water as raw materials, pre-emulsified, The laminating glue with a solid content of 40-50% is prepared by the steps of seed reaction, polymerization reaction and compounding;

[0019] Wherein, said monomer comprises hard monomer, soft monomer and the functional monomer containing -COOH, -OH group; Described hard monomer is made of methyl methacrylate (MMA) and methyl acrylate (MA) Composition; The soft monomer is composed of butyl acrylate (BA) and isooctyl acrylate (EHA); the functional monomer containing -COOH, -OH groups in the monomer is composed of methacrylic acid (MAA ) or acrylic acid (AA), any of hydroxyethyl acrylate (HEA) or hydroxypropyl acrylate (HPA), and ethylene glycol dimethacrylate (EGDMA).

[0020] According to the total weight of each raw material in the monomer a...

Embodiment 2

[0034] This embodiment provides a water-based acrylic emulsion laminating adhesive, which can be used in paper / plastic interface compounding. The laminating adhesive includes:

[0035]

[0036]

[0037] The preparation method of above-mentioned water-based acrylic acid emulsion laminating adhesive is carried out according to the following steps:

[0038] (1) Pre-emulsification: in the emulsification tank, drop into deionized water accounting for 40% of the total weight of deionized water, emulsifying agent A accounting for 50% of the total weight of emulsifying agent A, accounting for emulsifying agent B of 50% of the total weight of emulsifying agent B and All emulsifier C and all monomers were stirred and emulsified for more than 30 minutes to prepare a pre-emulsion;

[0039](2) Seed reaction: Add deionized water accounting for 40% of the total weight of deionized water, the remaining emulsifier A, the remaining emulsifier B, and buffer into the polymerization reactor,...

Embodiment 3

[0043] This embodiment provides a water-based acrylic emulsion laminating adhesive, which can be used in paper / plastic interface compounding. The laminating adhesive includes:

[0044]

[0045]

[0046] The preparation method of above-mentioned water-based acrylic acid emulsion laminating adhesive is carried out according to the following steps:

[0047] (1) Pre-emulsification: put into the emulsification kettle the deionized water accounting for 45% of the total weight of deionized water, the emulsifier A accounting for 50-60% of the total weight of emulsifier A, and the emulsifier A accounting for 50-60% of the total weight of emulsifier B Emulsifier B, all emulsifier C, and all monomers, start stirring and emulsifying for more than 30 minutes to prepare a pre-emulsion;

[0048] (2) Seed reaction: Add deionized water accounting for 45% of the total weight of deionized water, the remaining emulsifier A, the remaining emulsifier B, and buffer into the polymerization reac...

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Abstract

The invention discloses a water-based polyacrylic emulsion laminating adhesive and a preparation method thereof, which belong to the field of adhesives. The laminating adhesive with solid content of between 40 percent and 50 percent is prepared from raw materials of monomers, an emulsifier, an initiator, a buffering agent, a pH regulator, a waterborne aid and deionized water by adopting steps of pre-emulsification, seed reaction, polymerization and compounding, wherein the monomers include a hard monomer, a soft monomer and a functional monomer containing -COOH and -OH groups; the emulsifier consists of alkyl ether ammonium sulfate, sulpho sodium succinate and allyloxyl alkyl sodium sulfonate in the ratio of 2:1:(0.4-0.8); and the waterborne aid comprises a waterborne wetting agent, a waterborne defoaming agent and a waterborne preservative. The allyloxyl alkyl sodium sulfonate serving as a reactive emulsifier is introduced into the laminating adhesive, so that the influence of the migration of emulsifier micromolecules onto a paper / plastic interface is reduced, and initial adhesion and bonding strength are enhanced; and the functional monomer containing the -COOH and -OH groups is introduced, so that the bonding strength is enhanced, and the low-temperature adhesive property and ink affinity are improved.

Description

technical field [0001] The invention relates to the field of adhesive manufacturing, in particular to a water-based acrylic emulsion laminating adhesive and a preparation method thereof. Background technique [0002] Laminating adhesive is a special adhesive used for dry lamination between paper and plastic film. It can make the printed matter beautiful and elegant, with high brightness, and has the characteristics of waterproof and antifouling. It is widely used in the printing and packaging industry and is a kind of paper packaging. an important form. Except for a small amount of solvent-based adhesives (paper-plastic composite adhesives (ie laminating adhesives) currently used in the market, they are basically water-based emulsion adhesives. There are some defects in the use of water-based emulsion adhesives, mainly as At low temperature, the adhesive strength is not enough, the initial viscosity is poor, and the stability is poor; the affinity to the ink layer is not go...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J133/12C08F220/18C08F220/14C08F220/06C08F220/28C08F222/14C08F2/24
Inventor 陈小锋沈峰邓煜东
Owner NANTONG GAOMENG NEW MATERIAL
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