TW202021813A - Diisocyanate-free pressure-sensitive adhesive composite material prepared on polyurethane film including an adhesive film, a mucous film and a polyurethane film - Google Patents

Abstract

A diisocyanate-free pressure-sensitive adhesive composite material prepared on a polyurethane film includes an adhesive film, a mucous film and a polyurethane film. The mucous film contains butyl acrylate, methyl acrylate and acrylic acid respectively added by 10 to 50 parts by weight, 10 to 60 parts by weight, and 10 to 95 parts by weight, and mixed with solvent of 5 to 40 parts by weight. The usage amount of diaminodiphenylmethane, phthalic anhydride and 1,3,5-tripropylene hexahydro-1,3,5-triazine are respectively 0.01 to 20 parts by weight, and 0.01 to 5 parts by weight of initiator being added, and an additive selected from any of the dispersions of tetraethylenepentamine, aminocyclohexane, diaminodiphenylmethane, m-Xylenediamine and isophorone diamine is mixed for reaction and then the composite material is obtained.

Description

Prepare diisocyanate-free pressure sensitive adhesive composite material on polyurethane film

The present invention is related to thermoplastic polyurethane (TPU), especially a diisocyanate-free pressure-sensitive adhesive composite material prepared on a polyurethane film with high adhesion to water-repellent cloth.

Press, Thermoplastic polyurethanes (TPU) is an elastomer, which has been widely used in textile fabrics, shoe materials, apparel and other fields, usually through films such as Pressure Sensitive Adhesive (PSA) It can be used as a trademark or other decoration, or to provide waterproof and moisture-permeable effects such as high-frequency bonding on clothing fabrics or shoes.

However, as shown in Figure 1, since traditional thermoplastic polyurethane is applied to films, the adhesion between it and fabrics such as fibers is temporary adhesion, which mainly uses polyurethane polymer chains 1a and 2 The isocyanate compound 2a is connected, but there is no other link to the film or the bonding site to be applied, so the adhesion is not good. In addition, if you look through an optical microscope, you can see that there is a gap between it and the fabric, and it is not fully bonded, and it is easy to produce obvious bubbles and holes; and through a scanning electron microscope (SEM), you can also find it and the fabric Obviously still present a state of separation. This represents the poor fit of traditional thermoplastic polyurethane. In actual tests such as peel strength and tensile strength, it can also be found that the existing thermoplastic polyurethane is still insufficient in fit, and it is often easy to find peeling when using actual products. phenomenon.

In addition, the existing thermoplastic polyurethanes also contain diisocyanates, which not only generate cyanide free radicals during the bonding process between the thermoplastic polyurethane and the cloth, but also cause considerable damage to the environment and the human body. Not ideal.

In view of this, in order to improve and solve the above-mentioned shortcomings, the inventor of the present invention made great efforts to research and cooperate with the application of scientific theory, and finally proposed an invention with reasonable design and effective improvement of the above-mentioned shortcomings.

The main purpose of the present invention is to provide a diisocyanate-free pressure sensitive adhesive composite material prepared on a polyurethane film, which is selected from tetraethylenepentamine, aminocyclohexane, diaminodiphenylmethane, m-diphenylmethane Either toluene diamine or isophorone diamine dispersion is used as an additive to replace the traditional hardener with diisocyanate compound to improve the heat resistance of thermoplastic polyurethane (TPU) at high temperature and at high temperature It has thermal stability and is environmentally friendly and harmless to the human body due to the absence of diisocyanates.

Another object of the present invention is to provide a pressure sensitive adhesive composite material prepared on polyurethane film without diisocyanate, which can be applied to fabrics such as fibers to improve the strong bonding effect with the fabric.

In order to achieve the above-mentioned object, the present invention provides a pressure sensitive adhesive composite material prepared on a polyurethane film without diisocyanic acid, which includes an adhesive film composed of acrylic resin, a mucous film fixed and compounded on the adhesive film, And a polyurethane film for mucosa preparation, and the mucosa contains butyl acrylate, methyl acrylate, acrylic acid, diaminodiphenylmethane, phthalic anhydride and 1,3,5-triacryloylhexahydro -1,3,5-triazine dispersions; among them, butyl acrylate, methyl acrylate and acrylic acid are added 10 to 50 parts by weight, 10 to 60 parts by weight, and 10 to 95 parts by weight, respectively, and 5 to 40 parts by weight of the solvent are mixed, and the usage amount of diaminodiphenylmethane, phthalic anhydride and 1,3,5-tripropenylhexahydro-1,3,5-triazine is 0.01 to 20 parts by weight, respectively Parts, and add 0.01 to 5 parts by weight of the initiator, and any dispersion selected from the group consisting of tetraethylenepentamine, aminocyclohexane, diaminodiphenylmethane, m-xylene diamine and isophorone diamine One and the usage amount is 0.01 to 0.5 parts by weight as an additive mixed in and obtained by reaction.

According to the above-mentioned mucosal ingredients, the list is as follows:

In order to enable your reviewer to further understand the features and technical content of the present invention, please refer to the following detailed descriptions and drawings of the present invention. However, the accompanying drawings are only for reference and illustration, and are not intended to limit the present invention. .

Please refer to Figure 2, which is a schematic diagram of the structure of the present invention. The invention provides a pressure-sensitive adhesive composite material prepared on a polyurethane film without diisocyanate, which can be directly coated on the bonding surface for use, or prepared into a strip and wound into a bundle, as generally used Tape etc. And the pressure-sensitive adhesive is a laminated structure during the manufacturing process, including an adhesive film 4 made of acrylate, a mucosa 5 fixed and compounded on the adhesive film 4, and a mucosa 5 prepared on Polyurethane film 6, but it is difficult to layer due to gluing after completion, and tetraethylenepentamine 7 is used between mucosa 5 and polyurethane film 6 to improve the bonding and compatibility of polypropylene polymer and polyurethane polymer. Avoid problems such as degumming and phase separation.

As mentioned above, the adhesive film 4 can be a simple film (not attached to any carrier or substrate), which is directly spread on the adhesive surface for forming. The five major mucosal systems include butyl acrylate, methyl acrylate, acrylic acid, diaminodiphenylmethane, phthalic acid anhydride, 1,3,5-Triacryloylhexahydro-1,3,5-triazin (Triacryloylhexahydro-1,3,5-triazin) dispersion is mixed. In a specific embodiment, 30 parts by weight, 35 parts by weight, and 90 parts by weight of butyl acrylate, methyl acrylate, and acrylic are added, and mixed with 25 parts by weight of solvent. The solvent may be methyl formate, ethyl formate, propyl formate, n-butyl formate, n-pentyl formate, isoamyl formate, ethyl acetate, propyl acetate, butyl acetate, pentyl acetate, acetic acid Isoamyl ester.

The above-mentioned dispersions such as diaminodiphenylmethane, phthalic anhydride and 1,3,5-tripropenylhexahydro-1,3,5-triazine can also be powders or granules, and the amounts used are all In 5 parts by weight. At the same time, 0.5 parts by weight of the initiator is added. The initiator is a photoinitiator or a thermal initiator, and can be selected from potassium persulfate, azobisisobutyronitrile (Azobisisbutyronitrile). ) And Benzildimethylketal (Benzildimethylketal). Finally, it is selected from the dispersion of tetnaethylene pentamine, Diaminocyclohexane, Diminodiphenylmethane, Metaxylenediamine and Isophoronedicamine As an additive, any of the substances is obtained by mixing and reacting in an amount of 0.5 parts by weight.

In addition, in another embodiment of the mucosa 5, 25 parts by weight, 40 parts by weight, and 90 parts by weight of butyl acrylate, methyl acrylate and acrylic are added, and mixed with 25 parts by weight of solvent. The above-mentioned diaminodiphenylmethane, phthalic anhydride and 1,3,5-tripropenylhexahydro-1,3,5-triazine and other dispersions are used in 5 parts by weight, and then 0.5 Parts by weight of the initiator, and selected from the group consisting of tetnaethylene pentamine, diaminocyclohexane, diminodiphenylmethane, metaxylenediamine and isophorone two Any one of the amine (Isophoronedicamine) dispersions is used as an additive, and the usage amount thereof is 0.5 parts by weight mixed and reacted to obtain another embodiment of the present invention.

Furthermore, the aforementioned adhesive film 4 may be composed of a solvent-based acrylic pressure-sensitive adhesive, and its main components may be 2-ethylhexyl acrylate, methyl acrylate, acrylic acid, ethyl acetate, n-hexane, isopropanol, and benzene peroxide. Formaldehyde (BPO) constitutes as an example. However, since the adhesive film 4 used in the present invention can be composed of known ingredients and formulas, the above is only an example. In addition, the aforementioned polyurethane film 6 is composed of thermoplastic polyurethane (TPU).

Therefore, by the above-mentioned structural composition, a diisocyanate-free pressure sensitive adhesive composite material prepared on the polyurethane film of the present invention can be obtained.

In addition, as shown in FIG. 3, it is a schematic structural diagram of another embodiment of the present invention. Wherein, it is also possible to further attach a release layer 8 to the above-mentioned adhesive film 4 or polyurethane film 6, or attach a release layer 8 separately, and only need to tear off the release layer 8 during use, the polyurethane film can be used 6Apply to fabrics such as fibers to improve the strong bond effect with fabrics.

According to this, as shown in Figure 4, the bond between the present invention and fabrics such as fibers is a free radical chemical bond. In addition to the original polyurethane polymer chain 1, it can further provide diaminodiphenylmethane 2 and Tetraethylenepentamine 3 is used to improve the bonding strength of the film or the bonding site to be applied. Therefore, in addition to improving the heat resistance of thermoplastic polyurethane (TPU) at high temperatures and the thermal stability at high temperatures, and It is more environmentally friendly and harmless to the human body because it is free of diisocyanates, and it can further improve the adhesion to obtain several effects at one fell swoop. Especially through tetraethylenepentamine, the bonding and compatibility of polypropylene polymer and polyurethane polymer can be improved to avoid problems such as degumming and phase separation.

Based on the above, in the specific experimental data, the present invention can increase the initial adhesion from about 80g/cm to about 200g/m (according to the international test standard JISZ0237), which is the experimental data with better adhesion. In addition, after the mucosa 5 and the adhesive film 4 of the present invention are compounded, the adhesive film 4 can be improved by the mucosa 5 in terms of ductility, or therefore has better ductility, so as to enhance its industrial value.

In summary, this invention clearly achieves the intended purpose of use, and solves the deficiencies of conventional knowledge, and because it is extremely novel and progressive, it fully meets the requirements of an invention patent application. The application is filed in accordance with the patent law. Please check and verify in detail. Grant the patent in this case to protect the rights of the inventor.

However, the above descriptions are only the preferred and feasible embodiments of the present invention, and the scope of the patent of the present invention is not limited thereby. Therefore, all equivalent technologies, methods and other changes made by using the description and drawings of the present invention are the same. It is included in the scope of the present invention, and is fully disclosed.

1a: Polyurethane polymer chain

2a: Diisocyanate compound

1: Polyurethane polymer chain

2: Diaminodiphenylmethane

3: Tetraethylenepentamine

4: Film

5: Mucosa

6: Polyurethane film

7: Tetraethylenepentamine

8: Release layer

Figure 1 is a schematic diagram of the conventional transient bonding.

Figure 2 is a schematic diagram of the structure of the present invention.

Fig. 3 is a schematic structural diagram of another embodiment of the present invention.

Figure 4 is a schematic diagram of the free radical chemical bonding according to the present invention.

4: Film

5: Mucosa

6: Polyurethane film

7: Tetraethylenepentamine

Claims (10)

A pressure sensitive adhesive composite material prepared on a polyurethane film without diisocyanate, comprising an adhesive film composed of acrylic resin, a mucosa fixed and compounded on the adhesive film, and a mucosa for preparing the adhesive film on The polyurethane film, and the mucous film contains butyl acrylate, methyl acrylate, acrylic acid, diaminodiphenylmethane, phthalic anhydride and 1,3,5-triacryloylhexahydro-1,3,5- The dispersion of triazine, as well as solvents, initiators and additives are mixed; among them, butyl acrylate, methyl acrylate and acrylic acid are added 10 to 50 parts by weight, 10 to 60 parts by weight, and 10 to 95 parts by weight, respectively, And mixed with 5 to 40 parts by weight of solvent, and diaminodiphenylmethane, phthalic anhydride and 1,3,5-tripropenylhexahydro-1,3,5-triazine are respectively 0.01 to 20 parts by weight Parts, and add 0.01 to 5 parts by weight of the initiator, and any dispersion selected from the group consisting of tetraethylenepentamine, aminocyclohexane, diaminodiphenylmethane, m-xylene diamine and isophorone diamine One and the usage amount is 0.01 to 0.5 parts by weight as an additive mixed in and obtained by reaction. As described in item 1 of the patent application, a pressure sensitive adhesive composite material without diisocyanate is prepared on the polyurethane film, wherein the adhesive film is composed of solvent-based acrylic pressure sensitive adhesive. As described in item 1 of the patent application, a pressure sensitive adhesive composite material without diisocyanate is prepared on the polyurethane film, wherein the amount of acrylic acid used is 90 parts by weight. As described in item 1 of the scope of patent application, a pressure sensitive adhesive composite material without diisocyanate is prepared on the polyurethane film, wherein the solvent is methyl formate, ethyl formate, propyl formate, n-butyl formate, formic acid N-pentyl ester, isoamyl formate, ethyl acetate, propyl acetate, butyl acetate, amyl acetate, isoamyl acetate. As described in item 1 of the scope of patent application, a pressure-sensitive adhesive composite material without diisocyanate is prepared on the polyurethane film, wherein the diaminodiphenylmethane, phthalic anhydride or 1,3,5-triacrylic acid The usage amount of hexahydro-1,3,5-triazine is 5 parts by weight. As described in the first item of the patent application, a pressure-sensitive adhesive composite material without diisocyanate is prepared on the polyurethane film, wherein the initiator is a photoinitiator or a thermal initiator. As described in the first item of the patent application, a pressure-sensitive adhesive composite material without diisocyanate is prepared on the polyurethane film, wherein the initiator is potassium persulfate, azobisisobutyronitrile or benzoin dimethyl ether. As described in item 1, 6 or 7 of the scope of patent application, the pressure sensitive adhesive composite material without diisocyanate is prepared on the polyurethane film, wherein the use amount of the initiator is 0.5 parts by weight. For example, the polyurethane film described in item 1 of the patent application is prepared with a pressure-sensitive adhesive composite material free of diisocyanate, and a release layer is further attached to the adhesive film. For example, a diisocyanate-free pressure-sensitive adhesive composite material is prepared on the polyurethane film described in item 1 or 9 of the scope of the patent application, and a release layer is further attached to the polyurethane film.

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