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Alcohol-soluble composite film adhesive and preparation method thereof

A laminating adhesive, alcohol-soluble technology, applied in the direction of adhesives, adhesive types, mineral oil hydrocarbon copolymer adhesives, etc., can solve the problems of low production cost, and achieve easy operation, low price and low toxicity. Effect

Inactive Publication Date: 2012-07-25
BEIJING COMENS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the shortcomings of the existing laminating glue, the embodiment of the present invention provides an alcohol-soluble laminating glue and its preparation method. It is a component laminating glue, which is easy to use and has no waste of leftover glue. Ethanol can be used as a solvent instead of toluene , ethyl acetate and other toxic solvents, the production cost is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] This embodiment 1 provides an alcohol-soluble laminating adhesive, which can be applied to the bonding of ordinary plastic-plastic structures, aluminum-plated structures, and paper-plastic composite materials. The alcohol-soluble laminating adhesive is composed of the following raw materials (weight percentage):

[0021] Raw material % by weight

[0022] Acrylic acid copolymer 20~35%

[0023] Tackifying resin 10~25%

[0024] Alcohol solvent 50-60%;

[0025] Among them, the acrylic copolymer is specifically composed of 40-70wt% of acrylic hard monomer, 20-50wt% of acrylic soft monomer and 1-10wt% of acrylic functional monomer, and is polymerized by solution polymerization under the action of an initiator and an alcohol solvent. The glass transition temperature of the copolymer is 0~-30°C; wherein, the amount of the initiator is 0.4% of the total weight of the acrylic hard monomer, acrylic soft monomer and acrylic functional monomer. ~1.0%; the amount of the alcohol so...

Embodiment 2

[0036] The second embodiment provides an alcohol-soluble laminating adhesive, which can be applied to the bonding of ordinary plastic-plastic structures, aluminum-plated structures, and paper-plastic composite materials. The alcohol-soluble laminating adhesive is composed of the following raw materials (parts by weight):

[0037] Raw material parts by weight

[0038] Methyl acrylate 32

[0039] Vinyl acetate 36

[0040] Butyl acrylate 10

[0041] Isooctyl acrylate 18

[0042] Acrylic 3

[0043] Hydroxyethyl Acrylate 1

[0044] BPO (initiator) 0.5

[0045] Ethanol (alcohol solvent) 170

[0046]Rosin resin (tackifying resin) 40;

[0047] The preparation method of above-mentioned alcohol-soluble laminating glue specifically comprises:

[0048] Preparation of Acrylic Copolymer

[0049] 30-40% of the total weight of the alcohol solvent is put into the polymerization reactor, and the monomer mixture (the mixture formed by mixing methyl acrylate, vinyl acetate, butyl acrylat...

Embodiment 3

[0053] The third embodiment provides an alcohol-soluble laminating adhesive, which is composed of the following raw materials (parts by weight):

[0054] Raw material parts by weight

[0055] Methyl methacrylate 11

[0056] Vinyl acetate 40

[0057] Ethyl acrylate 13

[0058] Butyl acrylate 30

[0059] Methacrylic acid 2

[0060] Hydroxypropyl Acrylate 4

[0061] AIBN (initiator) 0.6

[0062] Ethanol (alcohol solvent) 170

[0063] Rosin resin (tackifying resin) 20

[0064] Terpene resin (tackifying resin) 10

[0065] The preparation method of the alcohol-soluble laminating adhesive of this embodiment is basically the same as that of the alcohol-soluble laminating adhesive in Example 5, which can be referred to Example 5, and will not be repeated here. The various indicators of the prepared alcohol-soluble laminating adhesive are as follows: the appearance is light yellow liquid, the solid content is 42.5%, and the viscosity is 300 mPas.

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Abstract

The invention discloses an alcohol-soluble composite film adhesive and a preparation method thereof, belonging to the field of an adhesive. The adhesive is prepared from the following components in percentage by weight: acrylate polymer, tackifying resin and solvent, wherein the acrylate polymer is polymerized from 20-50wt% of acrylate hard monomer, 40-70wt% of acrylate soft monomer and 1-10wt% of acrylate functional monomer by a solution polymerizing method under the actions of an initiator and the solvent. The glass transition temperature of the acrylate polymer is -10 to -40 DEG C. As the acrylate hard monomer and the acrylate soft monomer are reasonably matched, and a certain acrylate functional monomer is matched to participate into the polymer, the molecular chain of the acrylate polymer in the composite film adhesive has multiple chemical bond structures of -COH, -OH, -NH and the like, multiple intermolecular action force can be formed, the adhesive can be adhered to various composite materials with good adhesion property and wide adhesion range. The prepared composite film adhesive can use the alcohol as the main solvent and has the advantages of little toxicity and low cost.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to an alcohol-soluble laminating adhesive and a preparation method thereof. Background technique [0002] With the rapid development of the printing and packaging industry, laminating technology is widely used in the field of printing and packaging. Therefore, the demand for laminating glue is increasing in quantity and type. [0003] At present, most of the laminating adhesives used in China are two-component polyurethane adhesives. Due to the need to strictly proportion the adhesives during use, and the remaining adhesives after each production cannot be reused every other day, resulting in waste and loss. Whether it is rubber type or polyacrylate type, single-component laminating adhesives mostly use toluene and ethyl acetate as solvents. Toluene is a toxic solvent that must be completely evaporated during the laminating process, which not only affects the operation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/08C09J133/12C09J131/04C09J125/14C09J157/02C09J147/00C09J193/04
Inventor 陈小锋沈峰邓煜东
Owner BEIJING COMENS NEW MATERIALS
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