Waterborne adhesive for mounting cover of hardback and preparation method of waterborne adhesive

A technology for hardcover books and adhesives, applied in the direction of adhesives, adhesive types, ester copolymer adhesives, etc., can solve problems such as insufficient low temperature resistance, insufficient glue flexibility, insufficient adhesive force, etc., to achieve complementary performance and improve The effect of relative stability

Active Publication Date: 2019-03-15
DONGGUAN STAR COSM POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the glass transition temperature of the water-based adhesive is simply increased to make the glue feel dry after forming a film, so as to solve the problem that the residual glue layer will not cause adhesion, it will lead to the following problems: (1) The dryness of the glue is improved, But the adhesion is insufficient; (2) The glue is not flexible enough, and the low temperature resistance is not enough, and it is easy to degumming and bubbling at low temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A kind of hardcover book cover lining water-based adhesive of the present embodiment is prepared by the following steps (the following components are all in parts by weight):

[0055] Step S1, 13 parts of isophorone diisocyanate, 10 parts of polypropylene oxide diol with a number average molecular weight of 1000, 2 parts of hydrophilic chain extender dimethylol propionic acid, 3 parts of 1,4-butanediol Alcohol and 8 parts of butyl acrylate, 6 parts of styrene and 1 part of acrylic acid for synthesizing acrylate are added respectively in the reactor and stirred evenly to obtain the monomer mixed solution of water-based polyurethane prepolymer for subsequent use;

[0056] Step S2, configuring an initiator benzoyl peroxide-ethanol solution with a mass concentration of 20%, for subsequent use;

[0057] Step S3, the temperature of the reactor is raised to 82°C, and at the same time, 0.05 parts of benzoyl peroxide-ethanol solution is started to be added dropwise, so that the po...

Embodiment 2

[0061] A kind of hardcover book cover lining water-based adhesive of the present embodiment is prepared by the following steps (the following components are all in parts by weight):

[0062] Step S1, 10 parts of isophorone diisocyanate, 5 parts of hexamethylene diisocyanate, 10 parts of polypropylene oxide diol with a number average molecular weight of 1000 and 10 parts of polytetramethylene ether with a number average molecular weight of 1500 Diol, 4 parts of dimethylol propionic acid and 4 parts of dimethylol butyric acid, 2 parts of 1,4-butanediol and 3 parts of diethylene glycol and 5 parts of butyl acrylate for synthetic acrylates, 5 parts Add 2 parts of 2-ethylhexyl acrylate, 3 parts of methyl methacrylate, 5 parts of styrene and 2 parts of methacrylic acid into the reactor respectively, and stir evenly to obtain a monomer mixture of water-based polyurethane prepolymer, which is set aside ;

[0063] Step S2, configuring an initiator benzoyl peroxide-ethanol solution wit...

Embodiment 3

[0068] A kind of hardcover book cover lining water-based adhesive of the present embodiment is prepared by the following steps (the following components are all in parts by weight):

[0069] Step S1, 3 parts of isophorone diisocyanate, 7 parts of hexamethylene diisocyanate, 5 parts of polypropylene oxide diol with a number average molecular weight of 1500 and 10 parts of polytetramethylene ether diol with a data molecular weight of 1000 Alcohol, 4 parts of hydrophilic chain extender dimethylol butyric acid, 6 parts of diethylene glycol and 9 parts of 2-ethylhexyl acrylate for synthetic acrylates, 10 parts of styrene, 1 part of acrylic acid and 1 Parts of methacrylic acid are added respectively in the reactor, stirred evenly to obtain the monomer mixed solution of water-based polyurethane prepolymer, for subsequent use;

[0070] Step S2, configuring an initiator benzoyl peroxide-ethanol solution with a mass concentration of 30%, for subsequent use;

[0071] Step S3, the temper...

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PUM

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Abstract

The invention relates to the technical field of waterborne adhesives, in particular to a waterborne adhesive for mounting a cover of a hardback and a preparation method of the waterborne adhesive. Thewaterborne adhesive is prepared by using 10-20 parts of diisocyanate, 10-20 parts of polyether diol, 2-8 parts of a hydrophilic chain-extending agent, 3-8 parts of small-molecular diol and an acrylate monomer, 0.02-0.08 part of an initiator, 2-6 parts of triethylamine, 50-65 parts of deionized water, 0.08-0.5 part of a thickener, 0.1-0.5 part of a defoaming agent, and 0.05-0.2 part of a waterborne wetting agent through a special polymerization process. The adhesive related to the invention has the effects that the surface is dry after film-forming, and attaching adhesion is brought after laminating, solves the problem that an unattached adhesive layer of the part, out of an inside page book, of the paperboard cover is likely to be bonded with touched inside pages after being dried, and can pass a weathering resistance test; and phenomena of bubbling and adhesive failure of the mounted cover are avoided.

Description

technical field [0001] The invention relates to the technical field of water-based adhesives, in particular to a water-based adhesive for hardcover book cover lining and a preparation method thereof. Background technique [0002] At present, the covers of hardcover books are mostly glued by mechanical roller coating. Generally speaking, glue is coated on the outside of the inner pages, and then the formed cardboard cover is fitted on the inner pages for lining. The size of the cardboard cover is slightly larger than the size of the inner pages, so the glue layer is generally not exposed after lamination. However, the efficiency of this production process is low. As an improvement, some hardcover book production enterprises have introduced a method to roll-coat water-based adhesive on the back page of the cardboard cover and then fit it on the inner page to fit the cover in order to improve production efficiency. mechanical lining process. By applying glue in this way, due ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J133/08C08F220/18C08F212/08C08F220/06C08F220/14C08G18/75C08G18/48C08G18/34C08G18/32C08G18/66C08G18/73
CPCC08F220/18C08G18/0823C08G18/3206C08G18/348C08G18/4825C08G18/4854C08G18/6692C08G18/722C08G18/73C08G18/755C08L2205/04C09J175/08C08F220/1804C08F220/1808C08L33/08C08F212/08C08F220/06C08F220/14
Inventor 胡剑青胡浪浪熊新民蒋颜平赖淦荷
Owner DONGGUAN STAR COSM POLYMER
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