A glove finisher, its preparation method and application

Abstract

The application provides a glove finishing agent and a preparation method and application thereof, and belongs to the technical field of finishing agents.The glove finishing agent provided by the application comprises the following preparation raw materials in terms of mass content: polyacrylic resin 15-25%, emulsion type organic silicon hand feel agent TP508U 1-4%, dispersing agent 0.5-1%, flatting powder 4-6%, defoaming agent 0.5-1%, leveling agent 1-2%, antifreezing agent 1-1.5%, thickening agent 2-5%, pH regulator 1-1.5%, wetting agent 4-6%, and water 60-70%.The glove finishing agent provided by the application can improve the smoothness of PVC gloves, and can improve the wear resistance and scratch resistance of the PVC gloves.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of finishing agents, in particular to a glove finishing agent and a preparation method and application thereof. BACKGROUND

[0002] The PVC glove is made of polyvinyl chloride as raw material, does not contain allergens, has low powder and dust emission, low ion content, does not contain plasticizer, ester, silicone oil and other components, has strong chemical resistance, good flexibility and touch, and has anti-static performance, and can be used in a dust-free environment.

[0003] When preparing the PVC glove, a glove finishing agent is usually used to form a coating on the surface of the glove substrate, which can give the glove the characteristics of easy demolding and easy wearing. However, the PVC glove prepared by using the traditional glove finishing agent has insufficient smoothness and the wear resistance and scratch resistance still need to be improved. SUMMARY

[0004] The purpose of the present application is to provide a glove finishing agent and a preparation method and application thereof. The glove finishing agent provided by the present application can improve the smoothness of the PVC glove, and can improve the wear resistance and scratch resistance of the PVC glove.

[0005] In order to achieve the above-mentioned purpose of the application, the present application provides the following technical scheme:

[0006] The present application provides a glove finishing agent, which comprises the following preparation raw materials in terms of mass content:

[0007] 15-25% of polyacrylic acid resin, 1-4% of emulsion type organic silicon feel agent TP508U, 0.5-1% of dispersing agent, 4-6% of matting powder, 0.5-1% of defoaming agent, 1-2% of leveling agent, 1-1.5% of antifreezing agent, 2-5% of thickening agent, 1-1.5% of pH regulator, 4-6% of wetting agent, and 60-70% of water.

[0008] Preferably, the dispersing agent comprises an amino acid ester copolymer solution or a sodium salt of polycarboxylic acid; and the matting powder comprises amorphous silicon dioxide.

[0009] Preferably, the defoaming agent comprises polysiloxane or organically modified polydimethylsiloxane; and the leveling agent comprises a non-ionic hydrophobic modified polyurethane leveling agent or a polyether modified organic silicon leveling agent.

[0010] Preferably, the antifreezing agent comprises isopropyl alcohol or ethylene glycol; and the thickening agent comprises an acrylic alkali swelling thickening agent or a polyacrylate alkali swelling thickening agent.

[0011] Preferably, the pH regulator comprises 2-amino-2-methyl-1-propanol or dimethyl ethanolamine; and the wetting agent comprises a polyether siloxane copolymer or an acetylenic diol substrate wetting agent.

[0012] The application provides a glove coating agent and a preparation method thereof.

[0013] The polyacrylic resin, the emulsion type organic silicon hand feel agent TP508U, a dispersing agent, a matting powder, a defoaming agent, a leveling agent, an antifreezing agent, a thickening agent, a pH adjusting agent, a wetting agent and water are mixed to obtain the glove coating agent.

[0014] Preferably, the mixing comprises:

[0015] The water, the dispersing agent, the matting powder and the defoaming agent are first mixed to obtain a first mixture;

[0016] The first mixture, the polyacrylic resin, the leveling agent, the emulsion type organic silicon hand feel agent TP508U and the antifreezing agent are second mixed to obtain a second mixture;

[0017] The second mixture, the thickening agent and the pH adjusting agent are third mixed to obtain a third mixture;

[0018] The third mixture and the wetting agent are fourth mixed to obtain the glove coating agent.

[0019] The application provides application of the glove coating agent or the glove coating agent prepared by the preparation method in a PVC glove.

[0020] Preferably, the application comprises: diluting the glove coating agent and coating the glove coating agent on a surface of a PVC glove substrate to form a coating layer, so that the PVC glove is obtained.

[0021] Preferably, the thickness of the coating layer is 3-5 microns.

[0022] The application provides a glove coating agent, which comprises the following preparation raw materials in terms of mass content: 15-25% of a polyacrylic resin, 1-4% of an emulsion type organic silicon hand feel agent TP508U, 0.5-1% of a dispersing agent, 4-6% of a matting powder, 0.5-1% of a defoaming agent, 1-2% of a leveling agent, 1-1.5% of an antifreezing agent, 2-5% of a thickening agent, 1-1.5% of a pH adjusting agent, 4-6% of a wetting agent and 60-70% of water. DETAILED DESCRIPTION

[0023] The application provides a glove coating agent, which comprises the following preparation raw materials in terms of mass content:

[0024] Polyacrylic resin 15-25%, emulsion type silicone feel agent TP508U 1-4%, dispersing agent 0.5-1%, matting powder 4-6%, defoaming agent 0.5-1%, leveling agent 1-2%, antifreeze agent 1-1.5%, thickening agent 2-5%, pH regulator 1-1.5%, wetting agent 4-6%, water 60-70%.

[0025] In the present application, if no special description, the raw materials used are well known to those skilled in the art of commercially available or prepared by methods well known to those skilled in the art.

[0026] The glove finishing agent of the present application is prepared from the following raw materials by mass percentage: polyacrylic resin 15-25%, specifically 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24% or 25%. In the embodiments of the present application, the polyacrylic resin is specifically the product of Youmei (Beijing) Environmental Material Science and Technology Co., Ltd., model 5201. The polyacrylic resin is used as the base material in the present application, which can provide the coating on the PVC glove with high adhesion and good water resistance.

[0027] The glove finishing agent of the present application is prepared from the following raw materials by mass percentage: emulsion type silicone feel agent TP508U 2-5%, specifically 2%, 2.5%, 3%, 3.5%, 4%, 4.5% or 5%. In the embodiments of the present application, the emulsion type silicone feel agent TP508U is purchased from Yucheng Material Technology (Shanghai) Co., Ltd.

[0028] The emulsion type silicone feel agent TP508U in the present application has a soft and smooth effect, which is due to the directional arrangement of the hydrophobic group, i.e. methyl, in the silicone structure, as shown in the following formula:

[0029]

[0030] Due to the large bond angle of the silicone main chain siloxane chain, the methyl groups connected to the silicon atom rotate around the silicon atom like an open umbrella. The methyl group can almost cover the siloxane chain. Therefore, the polar methyl group can reduce the attraction between the surrounding molecules, so that the methyl siloxane molecule presents a spiral or coil structure, and the oxygen atom is adsorbed on the surface of the PVC glove coating. The bond angle of the Si-O bond may change under external force and restore after the external force is removed, so the chain can be contracted. The glove finishing agent provided by the present application is coated on the surface of the PVC glove substrate to form a continuous film with the properties of air permeability, transparency, toughness, flexibility and water repellency, so that the PVC glove has a soft and smooth effect, which can effectively improve the smoothness of the PVC glove and improve the wear resistance and scratch resistance of the PVC glove. In addition, the emulsion type organic silicone feel agent TP508U in the glove finishing agent provided by the present application has good compatibility with the polyacrylic resin, which is convenient for forming a uniform glove finishing agent and can form a film on the surface of the PVC glove substrate. Under the condition of achieving appropriate smoothness, the amount of emulsion type organic silicone feel agent TP508U can be reduced as much as possible. When the amount of emulsion type organic silicone feel agent TP508U is too much, white spots will appear on the surface of the coating, and even the adhesion of the coating will be affected. Therefore, the amount of emulsion type organic silicone feel agent TP508U is controlled in the above range, which is beneficial to ensure that the PVC glove has excellent comprehensive performance.

[0031] The preparation raw materials of the glove finishing agent provided by the present application include 0.5-1% of a dispersant by mass percentage, which can be specifically 0.5%, 0.6%, 0.7%, 0.8%, 0.9% or 1%. In the present application, the dispersant preferably includes an amino acid ester copolymer solution or a sodium polycarboxylate, and more preferably an amino acid ester copolymer solution, specifically an amino acid ester copolymer solution CFC-6530. In the embodiments of the present application, the amino acid ester copolymer solution is purchased from Tianjin Aberdeen Chemical Technology Co., Ltd., and the model number is CFC-6530. The present application preferably uses the above-mentioned kind of dispersant, which can make the components fully dispersed in a short time and prevent mutual aggregation.

[0032] The preparation raw materials of the glove finishing agent provided by the present application include 4-6% of an opacifying powder by mass percentage, which can be specifically 4%, 4.5%, 5%, 5.5% or 6%. In the present application, the opacifying powder preferably includes amorphous silica. In the embodiments of the present application, the amorphous silica is purchased from Lengshuijiang San A New Material Technology Co., Ltd., and the model number is S401. The present application preferably uses the above-mentioned kind of opacifying powder, which can improve the opacifying effect and transparency of the glove finishing agent.

[0033] The glove finishing agent of the present application comprises 0.5-1% of defoaming agent by mass percentage, specifically 0.5%, 0.6%, 0.7%, 0.8%, 0.9% or 1%. In the present application, the defoaming agent preferably comprises polysiloxane or organic modified polydimethylsiloxane, more preferably polysiloxane, specifically high-temperature silicone emulsion type defoaming agent B62. In the embodiment of the present application, the high-temperature silicone emulsion type defoaming agent B62 is purchased from Tianjin Maike Trading Co., Ltd. The present application preferably uses the above-mentioned defoaming agent, which can reduce the surface tension of the glove finishing agent, inhibit the generation of foam or eliminate the generated foam, and is conducive to improving the film forming quality of the glove finishing agent on the surface of the PVC glove substrate.

[0034] The glove finishing agent of the present application comprises 1-2% of leveling agent by mass percentage, specifically 1%, 1.3%, 1.5%, 1.7% or 2%. In the present application, the leveling agent preferably comprises non-ionic hydrophobically modified polyurethane leveling agent or polyether modified silicone leveling agent, more preferably non-ionic hydrophobically modified polyurethane leveling agent, specifically non-ionic hydrophobically modified polyurethane leveling agent H200D. In the embodiment of the present application, the non-ionic hydrophobically modified polyurethane leveling agent is purchased from Hefei Huayue New Material Technology Co., Ltd., and the model number is H200D. The present application preferably uses the above-mentioned leveling agent, which can improve the flowability of the glove finishing agent and is conducive to obtaining a flat and uniform coating on the surface of the PVC glove.

[0035] The glove finishing agent of the present application comprises 1-1.5% of antifreeze agent by mass percentage, specifically 1%, 1.1%, 1.2%, 1.3%, 1.4% or 1.5%. In the present application, the antifreeze agent preferably comprises isopropyl alcohol or ethylene glycol, more preferably isopropyl alcohol. In the embodiment of the present application, the isopropyl alcohol is purchased from Jinzhou Petrochemical Branch Company of China Petroleum and Natural Gas Corporation Limited. The present application preferably uses the above-mentioned antifreeze agent, which can prevent the glove finishing agent from freezing under low temperature conditions and can normally hydrate under a negative temperature environment of 0-15°C.

[0036] The glove finishing agent of the present application comprises 2-5% of thickening agent by mass percentage, specifically 2%, 2.5%, 3%, 3.5%, 4%, 4.5% or 5%. In the present application, the thickening agent preferably comprises acrylic alkali-swellable thickening agent or polyacrylate alkali-swellable thickening agent, more preferably acrylic alkali-swellable thickening agent, specifically acrylic alkali-swellable thickening agent Wink-7936. In the embodiment of the present application, the acrylic alkali-swellable thickening agent is purchased from Jingzhijie (Beijing) Technology Co., Ltd., and the model number is Wink-7936. The present application preferably uses the above-mentioned acrylic alkali-swellable thickening agent, which can improve the viscosity and rheological properties of the glove finishing agent.

[0037] The glove finishing agent of the present application comprises 1-1.5% of pH adjuster by mass percentage, specifically 1%, 1.1%, 1.2%, 1.3%, 1.4% or 1.5%. In the present application, the pH adjuster preferably comprises 2-amino-2-methyl-1-propanol or dimethyl ethanolamine, more preferably 2-amino-2-methyl-1-propanol. In the embodiment of the present application, the 2-amino-2-methyl-1-propanol is purchased from Beijing Meiya Kingstar Pharmaceutical Technology Co., Ltd., model number is

[0038] The glove finishing agent of the present application comprises 4-6% of wetting agent by mass percentage, specifically 4%, 4.5%, 5%, 5.5% or 6%. In the present application, the wetting agent preferably comprises polyether siloxane copolymer or acetylenic diol substrate wetting agent, more preferably polyether siloxane copolymer. In the embodiment of the present application, the polyether siloxane copolymer is purchased from Hangzhou Chongyao Technology Development Co., Ltd., model number is WynCoat*SL-3254.

[0039] The glove finishing agent of the present application comprises 60-70% of water by mass percentage, specifically 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69% or 70%. In the present application, the water is preferably deionized water.

[0040] In the present application, the pH value of the glove finishing agent is preferably 9-10.

[0041] The present application provides a preparation method of the glove finishing agent as described in the above technical solution, comprising the following steps:

[0042] The polyacrylic resin, emulsion type silicone hand feel agent TP508U, dispersant, matting powder, defoaming agent, leveling agent, antifreezing agent, thickening agent, pH adjuster, wetting agent and water are mixed to obtain the glove finishing agent.

[0043] In the present application, the mixing preferably comprises:

[0044] The water, dispersant, matting powder and defoaming agent are first mixed to obtain a first mixture;

[0045] The first mixture, polyacrylic resin, leveling agent, emulsion type silicone hand feel agent TP508U and antifreezing agent are second mixed to obtain a second mixture;

[0046] The second mixture, thickening agent and pH adjuster are third mixed to obtain a third mixture;

[0047] The third mixture is mixed with a wetting agent to obtain the glove finishing agent.

[0048] The present application mixes water, dispersant, matting powder and defoaming agent to obtain a first mixture. In the present application, the first mixing preferably comprises: adding dispersant, matting powder and defoaming agent into water in sequence, maintaining low-speed stirring during the feeding of the dispersant, matting powder and defoaming agent, the speed of the low-speed stirring is preferably 300-400 r / min, maintaining the low-speed stirring for 5-8 min after the feeding of each raw material is completed, then adding the next raw material, and maintaining the stirring for 8-10 min after the feeding of the last raw material is completed, then increasing the speed to high-speed stirring to obtain the first mixture; the speed of the high-speed stirring is preferably 700-800 r / min, and the time is preferably 15-20 min.

[0049] After obtaining the first mixture, the present application mixes the first mixture, polyacrylic resin, leveling agent, emulsion type organic silicon hand feel agent TP508U and antifreeze to obtain a second mixture. The present application preferably adds polyacrylic resin, leveling agent, emulsion type organic silicon hand feel agent TP508U and antifreeze into the first mixture in sequence to obtain a second mixture. In the present application, the second mixing is preferably carried out under stirring, and the speed of the stirring is preferably 400-500 r / min; the time of the second mixing is preferably 15-20 min, and the time of the second mixing is counted from the completion of the feeding of the antifreeze.

[0050] After obtaining the second mixture, the present application mixes the second mixture, thickening agent and pH adjusting agent to obtain a third mixture. The present application preferably adds thickening agent and pH adjusting agent into the second mixture in sequence to obtain a third mixture. In the present application, the third mixing is preferably carried out under stirring, and the speed of the stirring is preferably 900-1200 r / min; the time of the third mixing is preferably 25-40 min, and the time of the third mixing is counted from the completion of the feeding of the pH adjusting agent.

[0051] After obtaining the third mixture, the present application mixes the third mixture with a wetting agent to obtain the glove finishing agent. The present application preferably adds a wetting agent into the third mixture to obtain the glove finishing agent. In the present application, the fourth mixing is preferably carried out under stirring, and the speed of the stirring is preferably 900-1200 r / min; the time of the fourth mixing is preferably 40-60 min, and the time of the fourth mixing is counted from the completion of the feeding of the wetting agent.

[0052] The application provides application of the glove finishing agent or the glove finishing agent prepared by the preparation method in a PVC glove. In the application, the application preferably comprises: diluting the glove finishing agent and coating the glove finishing agent on the surface of a PVC glove substrate to form a coating layer, so as to obtain the PVC glove. In the application, the glove finishing agent is preferably diluted with water (more preferably deionized water) to obtain a glove finishing agent diluent; and then the glove finishing agent diluent is coated on the surface of a PVC glove substrate to form a coating layer, so as to obtain the PVC glove. In the application, the dilution multiple is preferably 20-25 times, more preferably 20-22 times; and the dilution multiple specifically refers to the weight ratio of the glove finishing agent diluent to the glove finishing agent. The application does not have special limitation on the coating method, and a method known to those skilled in the art can be used, and the coating can be realized by using the dipping method. The application does not have special limitation on the preparation method of the PVC glove substrate, and a method known to those skilled in the art can be used. In the application, the thickness of the coating layer is preferably 3-5 μm, more preferably 4 μm.

[0053] The technical solutions in the application will be described clearly and completely in combination with the embodiments in the application. Obviously, the described embodiments are only some of the embodiments of the application, but not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0054] The sources of some raw materials used in the following embodiments and comparative examples of the application are shown in Table 1.

[0055]

[0056]

[0057] Embodiment 1

[0058] Deionized water was added into an internally cleaned reaction kettle, a disperser was started and the rotating speed was set to 300 r / min, then a dispersing agent, a matting powder and a defoaming agent were sequentially added, 5 min after the addition of each raw material was completed, the next raw material was added, 8 min after the addition of the defoaming agent was completed, the rotating speed was increased to 800 r / min and stirring was performed for 20 min, to obtain a first mixture;

[0059] The polyacrylic resin, the leveling agent, the emulsion type organic silicon hand feel agent TP508U and the antifreezing agent were sequentially added into the reaction kettle containing the first mixture, the rotating speed was reduced to 500 r / min after the addition of the antifreezing agent was completed, and stirring was performed for 18 min, to obtain a second mixture;

[0060] The thickening agent and the pH regulator were sequentially added into the reactor containing the second mixture, and when the pH regulator was added completely, the stirring speed was increased to 1000 r / min and the stirring was performed for 35 min to obtain a third mixture;

[0061] The wetting agent was added into the reactor containing the third mixture, the stirring speed was maintained at 1100 r / min and the stirring was performed for 40 min, the disperser was turned off, and the glove finishing agent was discharged to obtain the glove finishing agent. The disperser and the reactor were cleaned to prepare for the next use.

[0062] The types, proportions and sources of the raw materials for preparing the glove finishing agent in the example were shown in Table 1.

[0063] Table 1 Types, proportions and sources of raw materials for preparing the glove finishing agent in Example 1

[0064]

[0065]

[0066] Examples 2-4 and Comparative Examples 1-2

[0067] The glove finishing agent was prepared according to the method of Example 1, except that the amount of the emulsion type silicone hand feel agent TP508U was different. The specific amount was shown in Table 2, and the excess part was deducted from the deionized water or the missing part was supplemented with deionized water to 100%.

[0068] Comparative Examples 3-11

[0069] The glove finishing agent was prepared according to the method of Example 1, except that the emulsion type silicone hand feel agent TP508U in Example 1 was replaced by other types of hand feel agents. The specific types of hand feel agents used in each comparative example were shown in Table 2.

[0070] Table 2 Types and contents of hand feel agents in the glove finishing agents in Examples 1-4 and Comparative Examples 1-11

[0071]

[0072]

[0073] Test Example 1

[0074] The glove finishing agents prepared in the examples and comparative examples were respectively diluted with deionized water at a ratio of 1:19 by volume to obtain glove finishing agent dilutions. The glove finishing agent dilutions were coated on the surface of PVC glove substrates to form a coating layer (thickness of 4 μm) by the dipping method to obtain PVC gloves. The properties of each PVC glove on the day of preparation were compared, and the details were as follows:

[0075] (1) Observe the PVC gloves for the presence of bright spots and bright spots on the appearance;

[0076] (2) Test the coefficient of friction of the PVC gloves to represent the smoothness of the hand feel;

[0077] (3) Test the area of the PVC glove surface coating that falls off to represent the wear resistance and scratch resistance after the test personnel wear the PVC gloves for 4 hours (perform routine work during the wearing of the PVC gloves).

[0078] Table 3 is the test results of the PVC gloves prepared using the glove finishing agents in the examples and comparative examples. The results show that using TP508U alone as a hand feel agent provides a good soft and fluffy touch to the PVC glove coating, the hand feel effect is good, and the wear resistance and scratch resistance of the PVC glove coating are improved.

[0079] Table 3 is the test results of the PVC gloves prepared using the glove finishing agents in the examples and comparative examples.

[0080]

[0081] Test Example 2

[0082] The glove finishing agents prepared in the examples and comparative examples were diluted with deionized water at a volume ratio of 1:19 to obtain glove finishing agent dilutions; the glove finishing agent dilutions were placed in a 70°C water bath for 3 days, the glove finishing agent dilutions after water bath treatment were placed in a beaker to observe whether there were floating white phenomena, and the glove finishing agent dilutions after water bath treatment were coated on the surface of the PVC glove substrate to form a coating (thickness of 4 μm) using the immersion method to obtain PVC gloves, and the properties of each PVC glove on the day of preparation were compared, as follows:

[0083] (1) Observe the PVC gloves for the presence of white spots;

[0084] (2) Test the area of the PVC glove surface coating that falls off to represent the wear resistance and scratch resistance after the test personnel wear the PVC gloves for 4 hours (perform routine work during the wearing of the PVC gloves).

[0085] Table 4 is the test results of the PVC gloves prepared using the glove finishing agents in the examples and comparative examples after water bath treatment. The results show that the performance of the PVC gloves is better when TP508U is used as a hand feel agent, but when the amount added is too much, the PVC gloves prepared after water bath treatment will have white spots.

[0086] Table 4 is the test results of the PVC gloves prepared using the glove finishing agents in the examples and comparative examples after water bath treatment.

[0087]

[0088] The above merely preferred embodiments of the present application, it should be noted that for those of ordinary skill in the art, without departing from the principles of the present application, can also make a number of improvements and refinements, these improvements and refinements should also be considered within the scope of the present application.

Claims

1. Use of a glove finisher in PVC gloves, the use comprising: The glove finishing agent is diluted with water, and then applied on the surface of a PVC glove substrate to form a coating layer, so as to obtain the PVC glove. The dilution multiple is 20, and the thickness of the coating layer is 4 μm. The raw materials for preparing the glove finishing agent by mass content are as follows: polyacrylic resin 18%, emulsion type silicone hand feel agent TP508U 4%, dispersant 0.5%, matting powder 4%, defoaming agent 1%, leveling agent 1%, antifreezing agent 1.5%, thickening agent 3%, pH regulator 1%, wetting agent 4%, and water 62%. The polyacrylic resin is model 5201; the dispersant is amino acid ester copolymer solution CFC-6530; the matting powder is amorphous silicon dioxide, model S401; the defoaming agent is high-temperature silicone emulsion type defoaming agent B62; the leveling agent is non-ionic hydrophobic modified polyurethane leveling agent H200D; the antifreezing agent is isopropyl alcohol; the thickening agent is acrylic alkali swelling type thickening agent Wink-7936; the pH regulator is 2-amino-2-methyl-1-propanol; and the wetting agent is polyether siloxane copolymer, model WynCoat* SL-3254.

2. Use according to claim 1, characterized in that, The preparation method of the glove finishing agent comprises the following steps: The polyacrylic resin, emulsion type silicone hand feel agent TP508U, dispersant, matting powder, defoaming agent, leveling agent, antifreezing agent, thickening agent, pH regulator, wetting agent, and water are mixed to obtain the glove finishing agent.

3. Use according to claim 2, characterized in that, The mixing comprises: The water, dispersant, matting powder, and defoaming agent are first mixed to obtain a first mixture; The first mixture, polyacrylic resin, leveling agent, emulsion type silicone hand feel agent TP508U, and antifreezing agent are second mixed to obtain a second mixture; The second mixture, thickening agent, and pH regulator are third mixed to obtain a third mixture; The third mixture and wetting agent are fourth mixed to obtain the glove finishing agent.

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