A skinning-preventing and de-sticking agent for inks and a method for preparing the same

Abstract

The application discloses an anti-skinning and anti-sticking agent for ink and a preparation method thereof. The anti-skinning and anti-sticking agent is prepared from the following components in parts by weight: high-boiling kerosene 25-45 parts, vaseline 20-30 parts, vegetable oil 15-20 parts, silicon resin 0.3-0.5 parts, anti-skinning agent 0.8-1.2 parts, surfactant 2-6 parts, and natural preservative 0.2-1.5 parts. The application relates to the technical field of anti-sticking agent preparation. The anti-skinning and anti-sticking agent for ink and the preparation method thereof can modify offset rotary black ink by adding silicon resin, thereby reducing the stickiness of the ink, improving the paper picking speed, slowing down the powder and hair dropping phenomenon of the paper, and not affecting the emulsification rate and printing density of the ink. The anti-skinning agent can reduce the skinning phenomenon of the ink, and ensure the printing quality and printing efficiency. The natural preservative can improve the preservative property of the anti-skinning agent, and prolong the service life and shelf life of the prepared ink to a certain extent.

Description

Technical Field

[0001] This invention relates to the field of descaling agent preparation technology, specifically to an anti-skinning descaling agent for inks and its preparation method. Background Technology

[0002] Referring to Chinese Patent No. CN113248968A, an environmentally friendly anti-skinning and anti-adhesive agent and its preparation method are described; the anti-adhesive agent is composed of the following raw materials in parts by weight: 20-30 parts petrolatum, 6-10 parts mineral oil, 30-40 parts linseed oil, 10-15 parts camellia oil, 3-6 parts white beeswax, 0.6-1.0 parts sorbitan monooleate, 2-4 parts bergamot essential oil, 0.8-1.5 parts dodecyl gemini quaternary ammonium salt, 0.7-1.2 parts anti-skinning agent, and 1.5-2.5 parts surfactant; the anti-adhesive agent prepared by this invention not only has very... The good gloss-enhancing effect can also improve printing quality and efficiency; furthermore, it has certain antibacterial properties, which extends its service life and shelf life to a certain extent; in addition, the detackifier prepared by this invention also has the function of an anti-skinning agent, which can further reduce the phenomenon of ink skinning and ensure printing quality and efficiency; referring to a detackifier production process of Chinese patent (publication number: CN104559443A), the formula is: 67% bleached tung oil, 5% aluminum stearate, 6% polyethylene wax, 10% petrolatum, 5% beeswax, and 12% high-boiling-point kerosene. The production process is as follows: accurately weigh the bleached tung oil and aluminum stearate into the reaction vessel and stir evenly at room temperature; heat to 180°C and keep warm for 1.5 hours until transparent; add polyethylene wax, petrolatum, and beeswax and stir until dissolved, keep warm for 1 hour, cool to 120°C and pour in high-boiling-point kerosene while stirring continuously, put into a large barrel and let cool naturally; send to the finished product workshop, roll once on a three-roll mill and package. The process is simple and convenient, the product has an acid value ≤5, a flowability of 32~42mm / 35℃, and a yield ≥97%, improving production efficiency and product qualification rate. However, the above-mentioned technical solutions all have the following problems: 1. The prepared desiccant has poor anti-corrosion properties, significantly limiting its service life; 2. When the prepared desiccant is added to ink, it significantly affects the ink's viscosity, thus impacting other properties during use. Therefore, this invention proposes an anti-skinning desiccant for ink and its preparation method to solve the aforementioned problems. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides an anti-skinning and anti-sticking agent for inks and its preparation method, thus solving the problems mentioned in the background section.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: an anti-skinning and anti-sticking agent for ink, which is made of the following components in parts by weight: 25-45 parts of high-boiling-point kerosene, 20-30 parts of petrolatum, 15-20 parts of vegetable oil, 0.3-0.5 parts of silicone resin, 0.8-1.2 parts of anti-skinning agent, 2-6 parts of surfactant, and 0.2-1.5 parts of natural preservative.

[0007] Preferably, the vegetable oil is any one or more of soybean oil, sunflower seed oil, and palm oil.

[0008] Preferably, the surfactant is selected from any one of sodium dodecylbenzenesulfonate, sodium dodecyl sulfate, and dodecyl polyoxyethylene ether.

[0009] Preferably, the specific preparation method of the anti-skinning agent is as follows:

[0010] (1) Pour cyclohexanone into a 1000 mL three-necked flask and heat it in an oil bath;

[0011] (2) After heating, slowly add hydroxylamine hydrochloride solution and maintain the oxime reaction at this temperature for 100-120 minutes;

[0012] (3) Then add alkaline solution to neutralize until the pH of the mixture is 7-8. Decompose while hot to obtain the upper material, namely crude cyclohexanone oxime.

[0013] (4) The crude cyclohexanone oxime is then washed with water and dehydrated to obtain an anti-skinning agent.

[0014] Preferably, the reaction temperature in step (2) is 70~80℃.

[0015] Preferably, the preparation method of the natural preservative is as follows: weigh 5.0g of bamboo shavings, pour them into ethyl acetate solution, mix under ultrasonic conditions for 1~1.5h, and then place them in a hot water bath at 90℃ for reflux extraction for 1.5~2h, and extract twice; combine the extracts, concentrate them under reduced pressure on a rotary evaporator until they become viscous, and dry the concentrated extract into powder in a vacuum drying oven.

[0016] Preferably, the liquid-to-solid ratio of the bamboo shavings to the ethyl acetate solution is 20:1 (mL:g), and the ultrasonic power is 100~400 W.

[0017] A method for preparing an anti-skinning and anti-tack agent for inks, specifically including the following steps:

[0018] S1. Weigh the above raw materials according to the above weight ratio, then put the vegetable oil and high-boiling-point kerosene into the reaction vessel, and raise the temperature to 180~200℃. At this temperature, mix and stir at a speed of 180~260 r / min for 15~25min.

[0019] S2. Add petrolatum, silicone resin, anti-skinning agent, surfactant and natural preservative into the reactor, and continue stirring until dissolved. The stirring rate is 200~260 r / min, and the stirring time is 30~40 min. After keeping warm for 1 hour, wait for natural cooling. The result is the anti-skinning and adhesive remover.

[0020] (III) Beneficial Effects

[0021] This invention provides an anti-skinning and anti-tack agent for inks and its preparation method. Compared with the prior art, it has the following advantages:

[0022] (1) The anti-skinning and anti-sticking agent used in this ink and its preparation method modify the offset printing rotary black ink by adding silicone resin, thereby reducing the adhesion of the ink and increasing the paper linting speed, so as to slow down the occurrence of paper dusting and linting, while not affecting the emulsification rate and printing density of the ink.

[0023] (2) The anti-skinning and anti-sticking agent used in this ink and its preparation method reduce the phenomenon of skinning in the ink by adding the anti-skinning agent, thus ensuring printing quality and printing efficiency; at the same time, by adding natural preservatives, the anti-corrosion performance of the anti-skinning agent is improved, which extends the service life and shelf life of the prepared ink to a certain extent. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] High-boiling-point kerosene: boiling point 180℃.

[0026] Vaseline:

[0027] The embodiments of the present invention provide the following six technical solutions: Example 1:

[0028] An anti-skinning and anti-sticking agent for inks is made from the following components in parts by weight: 25g high-boiling-point kerosene, 20g petrolatum, 15g soybean oil, 0.3g silicone resin, 0.8g anti-skinning agent, 2g sodium dodecylbenzenesulfonate, and 0.2g natural preservative.

[0029] The silicone resin is an epoxy-modified organosilicon resin.

[0030] In this embodiment of the invention, the specific preparation method of the anti-skinning agent is as follows:

[0031] (1) Pour cyclohexanone into a 1000 mL three-necked flask and heat it in an oil bath;

[0032] (2) After heating to 70°C, slowly add hydroxylamine hydrochloride solution and maintain the oxime reaction at this temperature for 120 minutes;

[0033] (3) Then add alkaline solution to neutralize until the pH of the mixture is 7, decompose it while hot to obtain the upper material, namely crude cyclohexanone oxime;

[0034] (4) The crude cyclohexanone oxime is then washed with water and dehydrated to obtain an anti-skinning agent.

[0035] In this embodiment of the invention, the preparation method of the natural preservative is as follows: Weigh 5.0g of bamboo shavings, pour them into an ethyl acetate solution with a liquid-to-solid ratio of 20:1 (mL:g), and ultrasonically mix for 1h under an ultrasonic power of 100W. Then, place the mixture in a hot water bath at 90℃ for reflux extraction for 1.5h, and extract twice. Combine the extracts and concentrate them under reduced pressure on a rotary evaporator until they become viscous. Dry the concentrated extract into powder in a vacuum drying oven. Example 2:

[0036] An anti-skinning and anti-sticking agent for inks is made from the following components in parts by weight: 35g high-boiling-point kerosene, 25g petrolatum, 18g sunflower seed oil, 0.4g silicone resin, 1.0g anti-skinning agent, 4g sodium dodecyl sulfate, and 0.6g natural preservative.

[0037] The silicone resin is a self-drying, environmentally friendly organic silicone resin.

[0038] In this embodiment of the invention, the specific preparation method of the anti-skinning agent is as follows:

[0039] (1) Pour cyclohexanone into a 1000 mL three-necked flask and heat it in an oil bath;

[0040] (2) After heating to 75°C, slowly add hydroxylamine hydrochloride solution and maintain the oxime reaction at this temperature for 110 minutes;

[0041] (3) Then add alkaline solution to neutralize until the pH of the mixture is 7.5. Decompose while hot to obtain the upper material, namely crude cyclohexanone oxime;

[0042] (4) The crude cyclohexanone oxime is then washed with water and dehydrated to obtain an anti-skinning agent.

[0043] In this embodiment of the invention, the preparation method of the natural preservative is as follows: 5.0g of bamboo shavings are weighed and poured into an ethyl acetate solution with a liquid-to-solid ratio of 20:2 (mL:g). The mixture is ultrasonically mixed for 1.2h at an ultrasonic power of 250W, and then refluxed in a 90℃ hot water bath for 1.8h, with the extraction repeated twice. The extracts are combined and concentrated under reduced pressure in a rotary evaporator until they reach a viscous state. The concentrated extract is then dried into powder in a vacuum drying oven.

[0044] Example 3:

[0045] An anti-skinning and anti-sticking agent for inks is made from the following components in parts by weight: 45g high-boiling-point kerosene, 30g petrolatum, 20g palm oil, 0.5g silicone resin, 1.2g anti-skinning agent, 6g dodecyl polyoxyethylene ether, and 1.5g natural preservative.

[0046] Silicone resin is an environmentally friendly organic silicone resin.

[0047] In this embodiment of the invention, the specific preparation method of the anti-skinning agent is as follows:

[0048] (1) Pour cyclohexanone into a 1000 mL three-necked flask and heat it in an oil bath;

[0049] (2) After heating to 80°C, slowly add hydroxylamine hydrochloride solution and maintain the oxime reaction at this temperature for 100 minutes;

[0050] (3) Then add alkaline solution to neutralize until the pH of the mixture is 8, decompose it while hot, and obtain the upper material, namely crude cyclohexanone oxime;

[0051] (4) The crude cyclohexanone oxime is then washed with water and dehydrated to obtain an anti-skinning agent.

[0052] In this embodiment of the invention, the preparation method of the natural preservative is as follows: 5.0g of bamboo shavings are weighed and poured into an ethyl acetate solution with a liquid-to-solid ratio of 20:3 (mL:g). The mixture is ultrasonically mixed for 1.5h under an ultrasonic power of 400W, and then refluxed in a 90℃ hot water bath for 2h, with the extraction repeated twice. The extracts are combined and concentrated under reduced pressure in a rotary evaporator until they reach a viscous state. The concentrated extract is then dried into powder in a vacuum drying oven. Example 4:

[0053] This embodiment provides another technical solution based on Embodiment 1 above: a method for preparing an anti-skinning and anti-sticking agent for inks, specifically including the following steps:

[0054] S1. Weigh the above raw materials according to the above weight ratio, then put the vegetable oil and high-boiling-point kerosene into the reaction vessel, and raise the temperature to 180°C. At this temperature, mix and stir at a speed of 260 r / min for 20 min.

[0055] S2. Add petrolatum, silicone resin, anti-skinning agent, surfactant and natural preservative into the reactor, continue stirring until dissolved, the stirring rate is 230 r / min, the stirring time is 350 min, keep warm for 1 hour, and wait for natural cooling. The result is the anti-skinning and adhesive remover.

[0056] Example 5:

[0057] This embodiment provides another technical solution based on Embodiment 2 above: a method for preparing an anti-skinning and anti-sticking agent for inks, specifically including the following steps:

[0058] S1. Weigh the above raw materials according to the above weight ratio, then put the vegetable oil and high-boiling-point kerosene into the reaction vessel, and raise the temperature to 180°C. At this temperature, mix and stir at a speed of 260 r / min for 20 min.

[0059] S2. Add petrolatum, silicone resin, anti-skinning agent, surfactant and natural preservative into the reactor, continue stirring until dissolved, the stirring rate is 230 r / min, the stirring time is 350 min, keep warm for 1 hour, and wait for natural cooling. The result is the anti-skinning and adhesive remover.

[0060] Example 6:

[0061] This embodiment provides another technical solution based on the above embodiment 3: a method for preparing an anti-skinning and anti-sticking agent for inks, specifically including the following steps:

[0062] S1. Weigh the above raw materials according to the above weight ratio, then put the vegetable oil and high-boiling-point kerosene into the reaction vessel, and raise the temperature to 180°C. At this temperature, mix and stir at a speed of 260 r / min for 20 min.

[0063] S2. Add petrolatum, silicone resin, anti-skinning agent, surfactant and natural preservative into the reactor, continue stirring until dissolved, the stirring rate is 230 r / min, the stirring time is 350 min, keep warm for 1 hour, and wait for natural cooling. The result is the anti-skinning and adhesive remover.

[0064] Comparative Example 1:

[0065] S1. Add 35g of high-boiling-point kerosene and 18g of sunflower seed oil into the reaction vessel, and raise the temperature to 190℃. At this temperature, mix and stir at a speed of 220 r / min for 20min.

[0066] S2. Add 25g of petrolatum, 0.4g of silicone resin, 4g of sodium dodecyl sulfate and 0.6g of natural preservative to the reaction vessel, and continue stirring until dissolved. The stirring rate is 230 r / min and the stirring time is 35min. After keeping warm for 1 hour, wait for natural cooling. The result is the anti-skinning and anti-sticking agent.

[0067] Performance testing: The original ink sample was offset rotary news black ink; 15ml of tack remover was taken as a sample and added to the offset rotary news black ink respectively, and dispersed evenly with a grinder to make ink samples.

[0068] Ink viscosity test: The experimental instrument used was a YO-M-IB ink viscosity meter. The experimental temperature was 320.5℃, the printing speed was 400 r / min, and the ink sample size was 110 mm x 60 mm x 20 mm. Each ink sample was tested three times, and the average value was taken. The measured data and viscosity properties of each example are shown in Table 1.

[0069] Table 1

[0070]

[0071] Table 1 shows that the emulsification rate of offset rotary book black ink with added silicone resin did not increase significantly compared to the original ink without silicone resin, and the change in printing density was minimal. This indicates that silicone resin does not affect the emulsification rate and printing density of the ink. Furthermore, the addition of silicone resin to modify the offset rotary black ink, by controlling the amount added, can significantly reduce the ink's tackiness and increase the paper's napping speed. Since silicone resin has minimal impact on the ink's viscosity, stringiness, hardness, thixotropy, emulsification rate, and printing density, this avoids changes in other ink properties caused by the addition of additives during ink use.

[0072] Silicone resin is inexpensive and added in very small amounts to inks, so it does not increase printing costs. At the same time, silicone resin can be used to modify the adhesion of high-speed offset rotary black ink to reduce paper dusting and linting.

[0073] Anti-skinning performance test: Add 2% of the original ink sample weight of desiccant, the ink sample size is 90 mm x 50 mm x 15 mm; the anti-skinning performance results of each example are shown in Table 2.

[0074] Table 2

[0075]

[0076] As shown in Table 2, by adding an anti-skinning agent, the prepared ink does not form a skin for about 4 days, does not form a skin for more than 90 days for half-packed ink, and does not form a skin inside a fully filled sealed can.

[0077] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0078] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0079] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-skinning and anti-sticking agent for inks, characterized in that, It is made from the following components in parts by weight: 25-45 parts high-boiling-point kerosene, 20-30 parts petrolatum, 15-20 parts vegetable oil, 0.3-0.5 parts silicone resin, 0.8-1.2 parts anti-skinning agent, 2-6 parts surfactant, and 0.2-1.5 parts natural preservative; The vegetable oil is any one or more of soybean oil, sunflower seed oil, and palm oil. The surfactant is selected from any one of sodium dodecylbenzenesulfonate, sodium dodecyl sulfate, and dodecyl polyoxyethylene ether; The silicone resin is an epoxy-modified organosilicon resin; The specific preparation method of the anti-skinning agent is as follows: (1) Pour cyclohexanone into a 1000 mL three-necked flask and heat it in an oil bath; (2) After heating, slowly add hydroxylamine hydrochloride solution and maintain the oxime reaction at this temperature for 100-120 minutes; (3) Then add alkaline solution to neutralize until the pH of the mixture is 7-8. Decompose while hot to obtain the upper material, namely crude cyclohexanone oxime. (4) The crude cyclohexanone oxime is then washed with water and dehydrated to obtain an anti-skinning agent; The reaction temperature in step (2) is 70-80℃; The preparation method of the natural preservative is as follows: weigh 5.0g of bamboo chips, pour them into ethyl acetate solution, and mix under ultrasonic conditions for 1 to 1.5 hours. Then, place them in a hot water bath at 90°C for reflux extraction for 1.5 to 2 hours, and extract twice. Combine the extracts and concentrate them under reduced pressure on a rotary evaporator until they become viscous. Dry the concentrated extract into powder in a vacuum drying oven. The ratio of bamboo chips to ethyl acetate solution is 20:1 to 20:3 (mL:g), and the ultrasonic power is 100 to 400 W.

2. A method for preparing the anti-skinning and anti-tack agent for ink according to claim 1, characterized in that, Specifically, the steps include the following: S1. Weigh each raw material according to the above weight ratio, then add vegetable oil and high-boiling-point kerosene into the reaction vessel, and raise the temperature to 180-200℃. At this temperature, mix and stir at a speed of 180-260 r / min for 15-25 minutes. S2. Add petrolatum, silicone resin, anti-skinning agent, surfactant and natural preservative into the reaction vessel, and continue stirring until dissolved. The stirring rate is 200-260 r / min, and the stirring time is 30-40 min. After keeping warm for 1 hour, wait for natural cooling. The result is the anti-skinning and adhesive remover.

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