TWI692516B - Pressure-sensitive adhesive composite material without diisocyanate - Google Patents

Abstract

A diisocyanate-free pressure-sensitive adhesive composite material comprising a film and a mucous membrane, and the mucous membrane comprises butyl acrylate, methyl acrylate and acrylic acid, respectively added 10 to 50 parts by weight, 10 to 60 parts by weight, and 10 to 95 parts by weight Parts, and mixed with 5 to 40 parts by weight of the solvent, and the amount of diaminodiphenylmethane, phthalic anhydride and 1,3,5-tripropenylhexahydro-1,3,5-triazine 0.01 to 20 parts by weight, and 0.01 to 5 parts by weight of initiator, and selected from tetraethylenepentamine, aminocyclohexane, diaminodiphenylmethane, m-xylenediamine and isophorone di Any one of the dispersions of amines is obtained by mixing and reacting as an additive.

Description

Pressure-sensitive adhesive composite material without diisocyanate

The invention relates to thermoplastic polyurethane (TPU), especially a pressure-sensitive adhesive composite material without diisocyanate.

Thermoplastic polyurethanes (thermoplastic polyurethanes, TPU) is an elastomer that has been widely used in textile fabrics, shoe materials, apparel and other fields, usually through films such as pressure sensitive adhesive (Pressure Sensitive Adhesive, PSA), etc. And, if it is glued to the fabric of clothing or shoes, such as high frequency, it can be used as a trademark or other decoration, or further provide waterproof and moisture permeability effects.

However, as shown in FIG. 1, since the traditional thermoplastic polyurethane is applied to the film, the adhesion between it and the fabric such as fiber is temporary adhesion, which mainly consists of polyurethane polymer chains 1a and two. The isocyanate compound 2a is connected, but no other link is provided to the film or the adhesion site to be applied, so the adhesion is not good. In addition, if it is seen through an optical microscope, it can be seen that there is a gap between it and the fabric but it does not completely fit, and it is easy to produce obvious bubbles and holes; and through such as a scanning electron microscope (SEM), it can also be found with the fabric The space is still clearly separated. This means that the traditional thermoplastic polyurethane has poor adhesion. In actual tests, such as peel strength, it can also be found that the existing thermoplastic polyurethane is still insufficient in adhesion, and the actual product is often easy to find peeling phenomenon.

In addition, existing thermoplastic polyurethanes also contain diisocyanates. Not only will the cyanide free radicals be generated during the bonding process between the thermoplastic polyurethane and the cloth, so it has a considerable degree of harm to the environment or the human body, so it is also less ideal. .

In view of this, in order to improve and solve the above-mentioned deficiencies, the present inventors are dedicated to research and cooperate with the application of academic principles, and finally propose a present invention with reasonable design and effective improvement of the deficiencies.

The main object of the present invention is to provide a diisocyanate-free pressure-sensitive adhesive composite material, which is selected from tetraethylenepentamine, aminocyclohexane, diaminodiphenylmethane, m-xylenediamine and isophor Either one of the dispersions of ketodiamine is used as an additive to eliminate the need to add diisocyanate when preparing the thermoplastic polyurethane composition, thereby improving the heat resistance of the thermoplastic polyurethane (TPU) at high temperatures and the thermal stability at high temperatures It is more environmentally friendly and harmless to the human body due to the absence of diisocyanate.

Another object of the present invention is to provide a diisocyanate-free pressure-sensitive adhesive composite material, which can be used in conjunction with fabrics such as fibers to improve the strong bonding effect with the fabric.

In order to achieve the above object, the present invention provides a diisocyanate-free pressure-sensitive adhesive composite material, which includes an adhesive film composed of acrylate, and a fixed mucosa compounded on the adhesive film. Dispersions of esters, methyl acrylate, acrylic acid, diaminodiphenylmethane, phthalic anhydride and 1,3,5-tripropenylhexahydro-1,3,5-triazine, as well as solvents, starting Agents and additives are mixed; wherein, 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, and mixed with 5 to 40 parts by weight of the solvent, The use of diaminodiphenylmethane, phthalic anhydride and 1,3,5-tripropenylhexahydro-1,3,5-triazine 0.01 to 20 parts by weight, and adding 0.01 to 0.5 parts by weight of initiator, and selected from tetraethylenepentamine, aminocyclohexane, diaminodiphenylmethane, m-xylenediamine and isophoronediamine Any one of the dispersions and the use amount of 0.01 to 0.5 parts by weight is obtained by mixing and reacting as an additive.

The list of ingredients according to the above mucosa is as follows:

<Learning>

1a: Polyurethane polymer chain

2a: Diisocyanate compound

<this invention>

1: Polyurethane polymer chain

2: Diaminodiphenylmethane

3: Tetraethylenepentamine

4: film

5: Mucosa

6: Release layer

Figure 1 is a schematic diagram of the conventional bonding.

FIG. 2 is a schematic structural diagram of the present invention.

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

FIG. 4 is a schematic diagram of the present invention for free radical chemical bonding.

In order for your reviewer to understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings are provided for reference and explanation only, and are not intended to limit the present invention. .

Please refer to FIG. 2, which is a schematic structural diagram of the present invention. The invention provides a diisocyanate-free pressure-sensitive adhesive composite material, which can be directly applied on the surface of the adhesive joint, or prepared into a band and bundled into a bundle, such as a commonly used adhesive tape. In addition, the pressure-sensitive adhesive has a layered structure during the manufacturing process, including an adhesive film 4 made of acrylate, and an adhesive film 5 fixed and composited on the adhesive film 4, but it is difficult to delaminate due to the bonding after the completion.

As mentioned above, the adhesive film 4 can be a simple film (not attached to any carrier or substrate), which is directly laid on the adhesive surface to form. The five major systems of the mucosa include butyl acrylate, methyl acrylate, acrylic acid, diaminodiphenylmethane, phthalic acid anhydride, The dispersion of 1,3,5-triacryloylhexahydro-1,3,5-triazine (Triacryloylhexahydro-1,3,5-triazin) 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 a 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 diaminodiphenylmethane, phthalic anhydride and 1,3,5-tripropenylhexahydro-1,3,5-triazine and other dispersions can also be powders or granules, and various amounts of use In 5 parts by weight. At the same time, further add 0.5 parts by weight of the initiator, the initiator is a photo initiator or a thermal initiator, and can be selected from potassium persulfate (potassium persulfate), azobisisobutyronitrile (Azobisisbutyronitrile ) And rest Any of fragrant dimethyl ether (Benzildimethylketal). Finally, it is selected from the dispersion of tetnaethylene pentamine, diaminocyclohexane, diminodiphenylmethane, metaxylenediamine, and isophoronedicamine Any one of them is used as an additive, and its use amount is obtained by mixing and reacting 0.5 parts by weight.

In addition, in another embodiment of the mucous membrane 5, butyl acrylate, methyl acrylate, and acrylic are added to 25 parts by weight, 40 parts by weight, and 90 parts by weight, respectively, and mixed with 25 parts by weight of the solvent. The above-mentioned diaminodiphenylmethane, phthalic anhydride and 1,3,5-tripropenylhexahydro-1,3,5-triazine and other dispersions are used in an amount of 5 parts by weight, then add 0.5 parts by weight Part of the starting agent, and is selected from tetnaethylene pentamine, diaminocyclohexane, diminodiphenylmethane, metaxylenediamine and isophoronediamine Any one of the dispersions of (Isophoronedicamine) is used as an additive, and its use amount is 0.5 parts by weight, mixed and reacted to obtain another embodiment of the present invention.

Furthermore, the 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, isopropyl alcohol, and benzene peroxide It is composed of formyl (BPO) as an example. However, since the adhesive film 4 used in the present invention can be composed of known ingredients and formulations, the above is only one example.

Therefore, with the above-mentioned structure, the pressure-sensitive adhesive composite material without diisocyanate 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. Among them, a release layer 6 or a release layer 6 may be further attached to the adhesive film 4 or the mucous film 5 respectively In use, as long as the release layer 6 is torn off, the mucous membrane 5 can be used on fabrics such as fibers to improve the strong bonding effect with the fabric.

Accordingly, as shown in FIG. 4, the bonding system between the present invention and fabrics such as fibers is a free radical chemical bonding, and the composition can be further prepared into a film shape, in addition to the original polyurethane polymer chain In addition to 1, can also provide such as diaminodiphenylmethane 2 and tetraethylene pentamine 3, to provide adhesion to the film or to be applied to the site of bonding strength improvement, so in addition to having improved thermoplastic polyurethane (TPU) at high temperatures Under the heat resistance and thermal stability at high temperature, and because it is more environmentally friendly and harmless to the human body due to the absence of diisocyanate, it can further improve the adhesion and obtain a multiplied effect.

As mentioned above, in the specific experimental data, the present invention can increase the initial viscosity from about 80g/cm to about 200g/cm (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 improve the ductility of the adhesive film 5 through the adhesive film 5, or have better ductility, so as to enhance the value of its industrial utilization.

In summary, the present invention can indeed achieve the intended purpose of use, and solve the lack of knowledge, and because it is extremely novel and progressive, it fully meets the requirements of the invention patent application. The application is made in accordance with the Patent Law, please check and Grant the patent in this case to protect the rights of inventors.

However, the above is only a preferred and feasible embodiment of the present invention, and the patent scope of the present invention is not limited thereby. Therefore, any changes in the equivalent technologies and means of the description and drawings of the present invention are the same. Included within the scope of the present invention, Chen Ming.

4: film

5: Mucosa

Claims (10)

A diisocyanate-free pressure-sensitive adhesive composite material includes a film composed of acrylate and a mucous membrane fixed and composited on the film, and the mucous membrane comprises butyl acrylate, methyl acrylate, acrylic acid, Dispersion of diaminodiphenylmethane, phthalic anhydride and 1,3,5-tripropenylhexahydro-1,3,5-triazine, as well as solvents, initiators and additives; , Butyl acrylate, methyl acrylate and acrylic acid were added 10 to 50 parts by weight, 10 to 60 parts by weight, and 10 to 95 parts by weight, and mixed with 5 to 40 parts by weight of the solvent, while diaminodiphenylmethane, o Phthalic anhydride and 1,3,5-tripropenylhexahydro-1,3,5-triazine are 0.01 to 20 parts by weight, respectively, and 0.01 to 5 parts by weight of initiator is added, and Any one of the dispersions of ethylenepentamine, aminocyclohexane, diaminodiphenylmethane, m-xylenediamine, and isophoronediamine, and is obtained by mixing and reacting as an additive in an amount of 0.01 to 5 parts by weight. The pressure-sensitive adhesive composite material without diisocyanate as described in item 1 of the patent application scope, wherein the adhesive film is composed of a solvent-based acrylate pressure-sensitive adhesive. The pressure-sensitive adhesive composite material without diisocyanate as described in item 1 of the patent application scope, wherein the amount of the acrylic acid used is 90 parts by weight. The pressure sensitive adhesive composite material without diisocyanate as described in item 1 of the patent scope, wherein the solvent is methyl formate, ethyl formate, propyl formate, n-butyl formate, n-pentyl formate, isoform formate Amyl ester, ethyl acetate, propyl acetate, butyl acetate, amyl acetate, isoamyl acetate. The pressure-sensitive adhesive composite material without diisocyanate as described in item 1 of the patent application scope, wherein the diaminodiphenylmethane, phthalic anhydride or 1,3,5-tripropenylhexahydro-1, The amount of 3,5-triazine used is 5 parts by weight. The pressure-sensitive adhesive composite material without diisocyanate as described in item 1 of the patent application scope, wherein the initiator is a photoinitiator or a thermal initiator. The pressure-sensitive adhesive composite material without diisocyanate as described in item 1 of the patent scope, wherein the initiator is potassium persulfate, azobisisobutyronitrile or benzoin dimethyl ether. The diisocyanate-free pressure-sensitive adhesive composite material as described in items 1, 6 or 7 of the patent application scope, wherein the amount of the initiator used is 0.5 parts by weight. The pressure-sensitive adhesive composite material without diisocyanate as described in item 1 of the patent application scope further has a release layer attached to the adhesive film. The pressure-sensitive adhesive composite material without diisocyanate as described in item 1 or 9 of the patent application scope further has a release layer attached to the mucous membrane.

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