Super-transparent glue and BOPP lustering film containing the glue

Abstract

The application relates to the technical field of high polymer materials, and particularly discloses super-transparent glue and BOPP (Biaxially-oriented polypropylene) lightening film containing the glue. The super-transparent glue is composed of butyl acrylate, isooctyl acrylate, triethyl citrate, vinyl acetate, octadecyl trimethyl ammonium chloride, methyl oleate, 3-methoxy propylamine, an initiator and a solvent. The application has the advantage of improving the transparency of the glue.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of high molecular materials, in particular to a super-transparent glue and a BOPP glazing film containing the glue. BACKGROUND

[0002] The solvent type acrylic pressure-sensitive adhesive on the market is mainly used for adhesion and formation of glazing film layer, and plays an important role in the field of printed matter surface treatment. However, the existing glue generally has the problem of poor appearance color, usually yellowish and dark, which not only reduces the aesthetics of the printed matter, but also easily interferes with the original printed color during the laminating process, resulting in a decline in visual effect, so there is room for improvement. SUMMARY

[0003] In order to improve the transparency of the glue, the present application provides a super-transparent glue and a BOPP glazing film containing the glue.

[0004] In the first aspect, the present application provides a super-transparent glue, which adopts the following technical scheme:

[0005] A super-transparent glue, characterized in that it is composed of butyl acrylate, isooctyl acrylate, vinyl acetate, triethyl citrate, octadecyl trimethyl ammonium chloride, methyl oleate, 3-methoxy propylamine, initiator and solvent.

[0006] By adopting the above technical scheme, by using butyl acrylate, isooctyl acrylate and vinyl acetate as monomers, the super-transparent glue prepared has a transparent appearance without obvious yellowish and dark phenomenon. By adding triethyl citrate, octadecyl trimethyl ammonium chloride, methyl oleate and 3-methoxy propylamine, the weather resistance of the high-transparency glue is high, and the transparent appearance can be maintained even after long-term irradiation under sunlight, and the glue is not prone to yellowing and darkening due to aging. The BOPP glazing film made of the super-transparent glue can better and durably exhibit the appearance of the printed matter, and is not prone to reducing the aesthetics of the printed matter, thus having higher economic value.

[0007] Preferably, the mass ratio of butyl acrylate, isooctyl acrylate, vinyl acetate, triethyl citrate, octadecyl trimethyl ammonium chloride, methyl oleate and 3-methoxy propylamine is 13-17:8-12:23-27:0.5-0.7:1.1-1.3:0.9-1.1:0.3-0.5.

[0008] By adopting the technical scheme, the mass ratio of butyl acrylate, isooctyl acrylate, vinyl acetate, triethyl citrate, octadecyl trimethyl ammonium chloride, methyl oleate and 3-methoxy propylamine is specifically selected, so that the modification effect of triethyl citrate, octadecyl trimethyl ammonium chloride, methyl oleate and 3-methoxy propylamine is better, the prepared glue is more transparent, has stronger weather resistance and is less prone to yellowing, and the printed matter can be better and lastingly kept beautiful.

[0009] Preferably, the mass ratio of butyl acrylate, isooctyl acrylate, vinyl acetate, triethyl citrate, octadecyl trimethyl ammonium chloride, methyl oleate, 3-methoxy propylamine, initiator and solvent is 13-17:8-12:23-27:0.5-0.7:1.1-1.3:0.9-1.1:0.3-0.5:0.1-0.3:47-53.

[0010] By adopting the technical scheme, the mass ratio of butyl acrylate, isooctyl acrylate, vinyl acetate, triethyl citrate, octadecyl trimethyl ammonium chloride, methyl oleate, 3-methoxy propylamine, initiator and solvent is specifically selected, so that the prepared glue has better strength and quality.

[0011] Preferably, the solvent is ethyl acetate.

[0012] By adopting the technical scheme, the solvent is specifically selected as ethyl acetate, so that the monomer reaction in the glue is more sufficient, and the quality of the glue is better.

[0013] Preferably, the initiator is azobisisobutyronitrile.

[0014] By adopting the technical scheme, azobisisobutyronitrile is specifically selected as the initiator, which can better reduce the yellowing phenomenon of the glue and make the glue more transparent.

[0015] Preferably, the preparation method of the super-transparent glue is as follows:

[0016] Step 1), butyl acrylate, isooctyl acrylate, vinyl acetate, triethyl citrate, octadecyl trimethyl ammonium chloride, methyl oleate, 3-methoxy propylamine and solvent are uniformly mixed to obtain a premix;

[0017] Step 2), the premix is kept at 75-80℃ under continuous stirring, then the initiator is uniformly dropped into the premix, the dropping time of the initiator is 4-5h, after the dropping is completed, the temperature is kept at 75-80℃ for 1.5-2h, and the super-transparent glue is obtained.

[0018] By adopting the technical scheme, the prepared glue is not prone to yellowing, can maintain high transparency, can better show the color of the printed matter and reduce the influence on the appearance of the printed matter.

[0019] In a second aspect, the application provides a BOPP glazing film containing glue, which adopts the following technical scheme:

[0020] A BOPP glazing film containing glue comprises a BOPP film, one side of the BOPP film being coated with glue, the glue being the super-transparent glue described above.

[0021] By adopting the above technical scheme, the prepared BOPP glazing film is relatively transparent, can well present the appearance and color of the printed matter, and has good weather resistance and is not prone to yellowing and darkening under long-term sunlight irradiation, so that the printed matter is more durable.

[0022] In summary, the application has the following beneficial effects:

[0023] 1. Since the application uses butyl acrylate, isooctyl acrylate and vinyl acetate as monomers to prepare super-transparent glue, the appearance of the super-transparent glue is relatively transparent and has no obvious yellowing and darkening phenomenon, and through the addition of triethyl citrate, octadecyl trimethyl ammonium chloride, methyl oleate and 3-methoxy propylamine, the weather resistance of the high-transparency glue is relatively high, the transparent appearance can be maintained under long-term sunlight irradiation, and the glue is not prone to yellowing and darkening due to aging, so that the BOPP glazing film prepared from the super-transparent glue can better and durably present the appearance of the printed matter, is not prone to reducing the aesthetic appearance of the printed matter, and has higher economic value.

[0024] 2. In the application, the mass ratio of butyl acrylate, isooctyl acrylate, vinyl acetate, triethyl citrate, octadecyl trimethyl ammonium chloride, methyl oleate and 3-methoxy propylamine is preferably selected, so that the modification effect of triethyl citrate, octadecyl trimethyl ammonium chloride, methyl oleate and 3-methoxy propylamine is better, the prepared glue is more transparent, has stronger weather resistance, is less prone to yellowing, and can better and durably maintain the aesthetic appearance of the printed matter.

[0025] 3. In the application, azobisdimethyl isobutyronitrile is preferably selected as an initiator, which can better reduce the yellowing of the glue and make the glue more transparent. DETAILED DESCRIPTION

[0026] The application will be further described in detail below in combination with examples.

[0027] Example 1

[0028] A BOPP glazing film containing glue is prepared by the following method:

[0029] Step 1), 13 kg of butyl acrylate, 8 kg of isooctyl acrylate, 0.5 kg of triethyl citrate, 1.1 kg of octadecyl trimethyl ammonium chloride, 0.9 kg of methyl oleate, 0.3 kg of 3-methoxypropylamine, 23 kg of vinyl acetate, 47 kg of ethyl acetate were put into a reaction kettle, the stirring speed was 25 r / min, and the mixture was stirred for 10 min to obtain a premix.

[0030] Step 2), the stirring speed was 25 r / min, and the premix was kept at 75°C, then 0.1 kg of azobisisobutyronitrile was uniformly dropped into the premix, the dropping time of the initiator was 4 h, and then the premix was kept at 75°C for 1.5 h to obtain the super transparent glue water.

[0031] Step 3), the super transparent glue water was applied to one side of the BOPP film, and then dried at 60°C for 10 s, and the dry glue thickness was 5 μm, to obtain the BOPP film containing glue.

[0032] The butyl acrylate was purchased from Shandong Kejian Chemical Co., Ltd.

[0033] The isooctyl acrylate was purchased from Shandong Kejian Chemical Co., Ltd.

[0034] The triethyl citrate was purchased from Shandong Yueyang New Material Co., Ltd.

[0035] The octadecyl trimethyl ammonium chloride was purchased from Hubei Zhongnuoxing Biological Technology Co., Ltd.

[0036] The methyl oleate was purchased from Shandong Shengyong Biological Technology Co., Ltd.

[0037] The 3-methoxypropylamine was purchased from Zhongshan Dixin Chemical Co., Ltd.

[0038] The vinyl acetate was purchased from Shandong Junda Chemical Co., Ltd.

[0039] The ethyl acetate was purchased from Shandong Mengkangda Chemical Co., Ltd.

[0040] The azobisisobutyronitrile was purchased from Jinan Quansheng Chemical Co., Ltd.

[0041] The BOPP film was purchased from Foshan Yitong Packaging Products Co., Ltd., and the thickness was 0.018 mm.

[0042] Example 2

[0043] A BOPP film containing glue was prepared by the following method:

[0044] Step 1), 15 kg of butyl acrylate, 10 kg of isooctyl acrylate, 0.6 kg of triethyl citrate, 1.2 kg of octadecyl trimethyl ammonium chloride, 1 kg of methyl oleate, 0.4 kg of 3-methoxypropylamine, 25 kg of vinyl acetate, 50 kg of ethyl acetate were put into a reaction kettle, the stirring speed was 28 r / min, and the mixture was stirred for 10 min to obtain a premix.

[0045] Step 2), the stirring speed was 28 r / min, and the premix was kept at 78℃, then 0.2 kg of azobisisobutyronitrile was uniformly dropped into the premix, the dropping time of the initiator was 4.5 h, and then the premix was kept at 78℃ for 1.75 h to obtain the super transparent glue water.

[0046] Step 3), the super transparent glue water was applied to one side of the BOPP film, and then dried at 60℃ for 10 s, and the dry glue thickness was 5 μm, to obtain the BOPP optical film containing glue.

[0047] The butyl acrylate was purchased from Shandong Kejian Chemical Co., Ltd.

[0048] The isooctyl acrylate was purchased from Shandong Kejian Chemical Co., Ltd.

[0049] The triethyl citrate was purchased from Shandong Yueyang New Material Co., Ltd.

[0050] The octadecyl trimethyl ammonium chloride was purchased from Hubei Zhongnuoxing Biological Technology Co., Ltd.

[0051] The methyl oleate was purchased from Shandong Shengyong Biological Technology Co., Ltd.

[0052] The 3-methoxypropylamine was purchased from Zhongshan Dixin Chemical Co., Ltd.

[0053] The vinyl acetate was purchased from Shandong Junda Chemical Co., Ltd.

[0054] The ethyl acetate was purchased from Shandong Mengkangda Chemical Co., Ltd.

[0055] The azobisisobutyronitrile was purchased from Jinan Quansheng Chemical Co., Ltd.

[0056] The BOPP film was purchased from Foshan Yitong Packaging Products Co., Ltd., and the thickness was 0.018 mm.

[0057] Example 3

[0058] A BOPP optical film containing glue, and a preparation method of the BOPP optical film containing glue is as follows:

[0059] Step 1), 17 kg of butyl acrylate, 12 kg of isooctyl acrylate, 0.7 kg of triethyl citrate, 1.3 kg of octadecyl trimethyl ammonium chloride, 1.1 kg of methyl oleate, 0.5 kg of 3-methoxypropylamine, 27 kg of vinyl acetate, 53 kg of ethyl acetate were put into a reaction kettle, stirred at 30 r / min for 10 min, uniformly mixed to obtain a premix.

[0060] Step 2), keep stirring at 30 r / min, keep the premix at 80℃, then drop 0.3 kg of azobisisobutyronitrile into the premix at a uniform speed, the dropping time of the initiator is 5 h, then keep the temperature at 80℃ for 2 h, to obtain the super transparent glue water.

[0061] Step 3), the super transparent glue water was applied to one side of the BOPP film, then dried at 60℃ for 10 s, the dry glue thickness was 5 μm, to obtain the BOPP film containing glue.

[0062] The butyl acrylate was purchased from Shandong Kejian Chemical Co., Ltd.

[0063] The isooctyl acrylate was purchased from Shandong Kejian Chemical Co., Ltd.

[0064] The triethyl citrate was purchased from Shandong Yueyang New Material Co., Ltd.

[0065] The octadecyl trimethyl ammonium chloride was purchased from Hubei Zhongnuoxing Biological Technology Co., Ltd.

[0066] The methyl oleate was purchased from Shandong Shengyong Biological Technology Co., Ltd.

[0067] The 3-methoxypropylamine was purchased from Zhongshan Dixin Chemical Co., Ltd.

[0068] The vinyl acetate was purchased from Shandong Junda Chemical Co., Ltd.

[0069] The ethyl acetate was purchased from Shandong Mengkangda Chemical Co., Ltd.

[0070] The azobisisobutyronitrile was purchased from Jinan Quansheng Chemical Co., Ltd.

[0071] The BOPP film was purchased from Foshan Yitong Packaging Products Co., Ltd., with a thickness of 0.018 mm.

[0072] Comparative Example 1

[0073] A BOPP film containing glue was prepared by the following method:

[0074] Step 1), 15 kg of butyl acrylate, 10 kg of isooctyl acrylate, 0.6 kg of triethanolamine, 1.2 kg of octadecyl trimethyl ammonium chloride, 1 kg of methyl oleate, 0.4 kg of 3-methoxypropylamine, 25 kg of vinyl acetate, 50 kg of ethyl acetate were put into a reaction kettle, the stirring speed was 28 r / min, and the mixture was stirred for 10 min to obtain a premix.

[0075] Step 2), the stirring speed was 28 r / min, and the premix was kept at 78℃, then 0.2 kg of azobisisobutyronitrile was uniformly dropped into the premix, the dropping time of the initiator was 4.5 h, and then the premix was kept at 78℃ for 1.75 h to obtain the super transparent glue water.

[0076] Step 3), the super transparent glue water was applied to one side of the BOPP film, and then dried at 60℃ for 10 s, and the dry glue thickness was 5 μm, to obtain the BOPP optical film containing glue.

[0077] The butyl acrylate was purchased from Shandong Kejian Chemical Co., Ltd.

[0078] The isooctyl acrylate was purchased from Shandong Kejian Chemical Co., Ltd.

[0079] The triethanolamine was purchased from Jinan Qihang Chemical Technology Co., Ltd.

[0080] The octadecyl trimethyl ammonium chloride was purchased from Hubei Zhongnuoxing Biological Technology Co., Ltd.

[0081] The methyl oleate was purchased from Shandong Shengyong Biological Technology Co., Ltd.

[0082] The 3-methoxypropylamine was purchased from Zhongshan Dixin Chemical Co., Ltd.

[0083] The vinyl acetate was purchased from Shandong Junda Chemical Co., Ltd.

[0084] The ethyl acetate was purchased from Shandong Mengkangda Chemical Co., Ltd.

[0085] The azobisisobutyronitrile was purchased from Jinan Quansheng Chemical Co., Ltd.

[0086] The BOPP film was purchased from Foshan Yitong Packaging Products Co., Ltd., and the thickness was 0.018 mm.

[0087] Comparative Example 2

[0088] A BOPP optical film containing glue was prepared by the following method:

[0089] Step 1), 15 kg of butyl acrylate, 10 kg of isooctyl acrylate, 0.6 kg of triethyl citrate, 1.2 kg of coconut oil diethanolamide, 1 kg of methyl oleate, 0.4 kg of 3-methoxypropylamine, 25 kg of vinyl acetate, 50 kg of ethyl acetate were put into a reaction kettle, the stirring speed was 28 r / min, and the mixture was stirred for 10 min to obtain a premix.

[0090] Step 2), the stirring speed was 28 r / min, and the premix was kept at 78°C, then 0.2 kg of azobisisobutyronitrile was uniformly dropped into the premix, the dropping time of the initiator was 4.5 h, and then the premix was kept at 78°C for 1.75 h to obtain the super-transparent glue water.

[0091] Step 3), the super-transparent glue water was applied to one side of the BOPP film, and then dried at 60°C for 10 s, and the dry glue thickness was 5 μm, to obtain the BOPP glazing film containing glue.

[0092] The butyl acrylate was purchased from Shandong Kejian Chemical Co., Ltd.

[0093] The isooctyl acrylate was purchased from Shandong Kejian Chemical Co., Ltd.

[0094] The triethyl citrate was purchased from Shandong Yueyang New Material Co., Ltd.

[0095] The coconut oil diethanolamide was purchased from Jinan Daorong Chemical Co., Ltd.

[0096] The methyl oleate was purchased from Shandong Shengyong Biological Technology Co., Ltd.

[0097] The 3-methoxypropylamine was purchased from Zhongshan Dixin Chemical Co., Ltd.

[0098] The vinyl acetate was purchased from Shandong Junda Chemical Co., Ltd.

[0099] The ethyl acetate was purchased from Shandong Mengkangda Chemical Co., Ltd.

[0100] The azobisisobutyronitrile was purchased from Jinan Quansheng Chemical Co., Ltd.

[0101] The BOPP film was purchased from Foshan Yitong Packaging Products Co., Ltd., and the thickness was 0.018 mm.

[0102] Comparative Example 3

[0103] A BOPP glazing film containing glue was prepared by the following method:

[0104] Step 1), 15 kg of butyl acrylate, 10 kg of isooctyl acrylate, 0.6 kg of triethyl citrate, 1.2 kg of octadecyl trimethyl ammonium chloride, 1 kg of sodium dodecyl benzene sulfonate, 0.4 kg of 3-methoxy propylamine, 25 kg of vinyl acetate, 50 kg of ethyl acetate were put into a reaction kettle, the stirring speed was 28 r / min, and the mixture was stirred for 10 min to obtain a premix.

[0105] Step 2), the stirring speed was 28 r / min, and the premix was kept at 78℃, then 0.2 kg of azobisisobutyronitrile was uniformly dropped into the premix, the dropping time of the initiator was 4.5 h, and then the premix was kept at 78℃ for 1.75 h to obtain the super transparent glue water.

[0106] Step 3), the super transparent glue water was applied to one side of the BOPP film, and then dried at 60℃ for 10 s, and the dry glue thickness was 5 μm, to obtain the BOPP optical film containing glue.

[0107] The butyl acrylate was purchased from Shandong Kejian Chemical Co., Ltd.

[0108] The isooctyl acrylate was purchased from Shandong Kejian Chemical Co., Ltd.

[0109] The triethyl citrate was purchased from Shandong Yueyang New Material Co., Ltd.

[0110] The octadecyl trimethyl ammonium chloride was purchased from Hubei Zhongnuoxing Biological Technology Co., Ltd.

[0111] The sodium dodecyl benzene sulfonate was purchased from Jinan Chengmin Chemical Co., Ltd.

[0112] The 3-methoxy propylamine was purchased from Zhongshan Dixin Chemical Co., Ltd.

[0113] The vinyl acetate was purchased from Shandong Junda Chemical Co., Ltd.

[0114] The ethyl acetate was purchased from Shandong Mengkangda Chemical Co., Ltd.

[0115] The azobisisobutyronitrile was purchased from Jinan Quansheng Chemical Co., Ltd.

[0116] The BOPP film was purchased from Foshan Yichong Packaging Products Co., Ltd., and the thickness was 0.018 mm.

[0117] Comparative Example 4

[0118] A BOPP optical film containing glue was prepared by the following method:

[0119] Step 1), 15 kg of butyl acrylate, 10 kg of isooctyl acrylate, 0.6 kg of triethyl citrate, 1.2 kg of octadecyl trimethyl ammonium chloride, 1 kg of methyl oleate, 0.4 kg of fatty alcohol polyoxyethylene ether, 25 kg of vinyl acetate, 50 kg of ethyl acetate were put into a reaction kettle, the stirring speed was 28 r / min, and the mixture was stirred for 10 min to make it uniform.

[0120] Step 2), the stirring speed was 28 r / min, and the premix was kept at 78℃, then 0.2 kg of azobisisobutyronitrile was added into the premix at a uniform speed, the dropping time of the initiator was 4.5 h, then the temperature was kept at 78℃ for 1.75 h, and the super transparent glue water was obtained.

[0121] Step 3), the super transparent glue water was applied to one side of the BOPP film, then dried at 60℃ for 10 s, and the dry glue thickness was 5 μm, and the BOPP film containing glue was obtained.

[0122] Butyl acrylate was purchased from Shandong Kejian Chemical Co., Ltd.

[0123] Isooctyl acrylate was purchased from Shandong Kejian Chemical Co., Ltd.

[0124] Triethyl citrate was purchased from Shandong Yueyang New Material Co., Ltd.

[0125] Octadecyl trimethyl ammonium chloride was purchased from Hubei Zhongnuoxing Biological Technology Co., Ltd.

[0126] Methyl oleate was purchased from Shandong Shengyong Biological Technology Co., Ltd.

[0127] Fatty alcohol polyoxyethylene ether was purchased from Shandong Yuquan New Material Technology Co., Ltd.

[0128] Vinyl acetate was purchased from Shandong Junda Chemical Co., Ltd.

[0129] Ethyl acetate was purchased from Shandong Mengkangda Chemical Co., Ltd.

[0130] Azobisisobutyronitrile was purchased from Jinan Quansheng Chemical Co., Ltd.

[0131] BOPP film was purchased from Foshan Yitong Packaging Products Co., Ltd., with a thickness of 0.018 mm.

[0132] Comparative Example 5

[0133] A BOPP film containing glue was prepared by the following method:

[0134] Step 1), 15 kg of butyl acrylate, 10 kg of isooctyl acrylate, 0.6 kg of triethanolamine, 1.2 kg of coconut oil diethanolamide, 1 kg of sodium dodecyl benzene sulfonate, 0.4 kg of fatty alcohol polyoxyethylene ether, 25 kg of vinyl acetate, 50 kg of ethyl acetate were put into a reaction kettle, the stirring speed was 28 r / min, and the mixture was uniformly stirred for 10 min to obtain a premix.

[0135] Step 2), the stirring speed was 28 r / min, and the premix was kept at 78℃, then 0.2 kg of azobisisobutyronitrile was uniformly dropped into the premix, the dropping time of the initiator was 4.5 h, and then the premix was kept at 78℃ for 1.75 h to obtain the super transparent glue water.

[0136] Step 3), the super transparent glue water was applied to one side of the BOPP film, and then dried at 60℃ for 10 s, and the dry glue thickness was 5 μm, to obtain the BOPP optical film containing glue.

[0137] The butyl acrylate was purchased from Shandong Kejian Chemical Co., Ltd.

[0138] The isooctyl acrylate was purchased from Shandong Kejian Chemical Co., Ltd.

[0139] The triethanolamine was purchased from Jinan Qihang Chemical Technology Co., Ltd.

[0140] The coconut oil diethanolamide was purchased from Jinan Daorong Chemical Co., Ltd.

[0141] The sodium dodecyl benzene sulfonate was purchased from Jinan Chengmin Chemical Co., Ltd.

[0142] The fatty alcohol polyoxyethylene ether was purchased from Shandong Yuquan New Material Technology Co., Ltd.

[0143] The vinyl acetate was purchased from Shandong Junda Chemical Co., Ltd.

[0144] The ethyl acetate was purchased from Shandong Mengkangda Chemical Co., Ltd.

[0145] The azobisisobutyronitrile was purchased from Jinan Quansheng Chemical Co., Ltd.

[0146] The BOPP film was purchased from Foshan Yichong Packaging Products Co., Ltd., and the thickness was 0.018 mm.

[0147] Experiment 1

[0148] The BOPP optical film containing glue of each example and comparative example was pasted on a white label paper to prepare a to-be-tested label.

[0149] The to-be-tested label was compared with the white label paper without pasting the BOPP optical film containing glue, and whether there was yellowing phenomenon was observed.

[0150] Then the test label is irradiated under sunlight for 90 days, and the test label is compared with the white label paper without the BOPP gloss film containing the glue again, and whether there is yellowing phenomenon is observed.

[0151] The specific experimental data of experiment 1 is shown in Table 1.

[0152] Table 1

[0153] Initial appearance of the tag under test Appearance of the tag under test after 90 days of weathering Example 1 No yellowing No yellowing Example 2 No yellowing No yellowing Example 3 No yellowing No yellowing Comparative Example 1 No yellowing Significant yellowing Comparative Example 2 No yellowing Significant yellowing Comparative Example 3 No yellowing Significant yellowing Comparative Example 4 No yellowing Significant yellowing Comparative Example 5 No yellowing Significant yellowing and significant darkening

[0154] According to the data comparison of each example and the comparative example in Table 1, the glue prepared in each example and the comparative example has good transparency at the beginning, and does not appear yellowing to affect the color. However, after being exposed to sunlight for 90 days, the glue in each example still maintains good transparency and does not appear yellowing, while the comparative example is significantly yellowed, thereby affecting the color of the test label. It is proved that the glue synthesized by using butyl acrylate and isooctyl acrylate as monomers in each example can have higher transparency, can better show the color and appearance of the printed matter, and by adding triethyl citrate, octadecyl trimethyl ammonium chloride, methyl oleate and 3-methoxy propylamine, the weather resistance of the glue can be significantly improved, and the glue can still maintain transparent form under long-term sunlight, and is not easy to yellow due to aging, thereby affecting the color and appearance of the printed matter.

[0155] The specific embodiments are only an explanation of the present application, and are not a limitation of the present application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the present specification, and the modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. An ultra-clear glue, characterized by: Butyl acrylate, isooctyl acrylate, vinyl acetate, triethyl citrate, octadecyl trimethyl ammonium chloride, methyl oleate, 3-methoxy propyl amine, initiator, solvent are compounded to form the super transparent glue; The mass ratio of butyl acrylate, isooctyl acrylate, vinyl acetate, triethyl citrate, octadecyl trimethyl ammonium chloride, methyl oleate, 3-methoxy propyl amine is 13-17:8-12:23-27:0.5-0.7:1.1-1.3:0.9-1.1:0.3-0.

5.

2. The super-transparent glue according to claim 1, characterized in that: The mass ratio of butyl acrylate, isooctyl acrylate, vinyl acetate, triethyl citrate, octadecyl trimethyl ammonium chloride, methyl oleate, 3-methoxy propyl amine, initiator, solvent is 13-17:8-12:23-27:0.5-0.7:1.1-1.3:0.9-1.1:0.3-0.5:0.1-0.3:47-53.

3. The super-transparent glue according to claim 2, characterized in that: The solvent is ethyl acetate.

4. The super-transparent glue according to claim 3, characterized in that: The initiator is azobis isobutyronitrile.

5. The super-transparent glue according to any one of claims 1-4, characterized in that: The preparation method of the super transparent glue is as follows: Step 1), butyl acrylate, isooctyl acrylate, vinyl acetate, triethyl citrate, octadecyl trimethyl ammonium chloride, methyl oleate, 3-methoxy propyl amine, solvent are mixed uniformly to obtain a premix; Step 2), keep stirring, keep the premix at 75-80℃, then drop the initiator into the premix at a constant speed, the dropping time of the initiator is 4-5h, after dropping, keep the temperature at 75-80℃ for 1.5-2h, then the super transparent glue is obtained.

6. A BOPP glazing film containing glue, characterized in that: The BOPP film is coated with the glue on one side, and the glue is the super transparent glue according to any one of claims 1-5.