Antifouling, sound-damping and touch-improving agent for leather and preparation method thereof

Abstract

The application belongs to the field of leather auxiliaries, and particularly relates to a kind of anti-stain, sound-damping and touch agent for leather and a preparation method thereof. The preparation method comprises the following steps: mixing double allyl polyether, allyl methacrylate, a catalyst and hydrogen-terminated polydimethylmethylhydrogen siloxane, then heating and reacting to obtain an intermediate; mixing the intermediate with isomeric tridecanol polyoxyethylene ether 1305 and isomeric tridecanol polyoxyethylene ether 1307, then heating, stirring and dispersing, and adding deionized water to continue stirring and dispersing. The anti-stain, sound-damping and touch agent for leather does not contain fluorine in the structure, so it is not limited in use due to the fluorine ban. In addition, different from conventional hyperbranched, the present application adopts silicon-hydrogen addition hyperbranched, which is more flexible in structure design, has a larger silicon crosslinking density, can achieve better anti-stain and sound-damping effects, and can improve the physical properties of the finishing system. The touch of the anti-stain, sound-damping and touch agent for leather can be adjusted to a large extent, and it is more widely applicable.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of leather auxiliaries, and particularly relates to a stain-proof and sound-damping hand feel agent for leather and a preparation method thereof. BACKGROUND

[0002] Currently, leather sofas, leather seats, leather bags, leather garments and other products have the problems of easy dirt and noise caused by friction during use, which brings a lot of troubles to consumers in actual use. The stain-proof and sound-damping hand feel agent can reduce the surface tension and bring a smooth hand feel in leather finishing, thereby playing a role in stain-proofing and sound-damping. Therefore, it is necessary to develop the stain-proof and sound-damping hand feel agent.

[0003] Currently, the hand feel agent with stain-proof and sound-damping effects on the market usually has a fluorosilicon structure. However, with the gradual prohibition of fluorine, the promotion of such products is also limited.

[0004] Therefore, it is necessary to redesign a new molecular structure to solve the existing technical problems. Therefore, based on this, the technical scheme of the application is proposed. SUMMARY

[0005] In order to solve the problems existing in the prior art, the application provides a stain-proof and sound-damping hand feel agent for leather, which comprises a functional main body of the stain-proof and sound-damping hand feel agent for leather as shown in formula I.

[0006]

[0007] In the formula, m=49;

[0008] a=10, 11, 12, 13 or 14;

[0009] b=4, 5, 6, 7, 8, 9 or 10;

[0010] c=0, 1, 2, 3 or 4;

[0011] x=0, 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10;

[0012] y=0, 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10.

[0013] Based on the same technical concept, the application further provides a preparation method of the stain-proof and sound-damping hand feel agent for leather, which comprises the following steps:

[0014] (1) mixing double allyl polyether, allyl methacrylate, a catalyst and hydrogen-terminated polydimethylmethylhydrogen siloxane, and then heating and reacting to obtain the functional main body of the stain-proof and sound-damping hand feel agent for leather;

[0015] (2) mixing the functional body of the leather antifouling, noise-reducing and hand-feeling agent with isomeric tridecanol polyoxyethylene ether 1305 and isomeric tridecanol polyoxyethylene ether 1307, then heating, stirring and dispersing, and then adding deionized water to continue stirring and dispersing, to obtain the leather antifouling, noise-reducing and hand-feeling agent.

[0016] Preferably, in step (1), the mass ratio of the double allyl polyether, the allyl methacrylate, the catalyst and the hydrogen-terminated polydimethylmethylhydrogen siloxane is 12:7.5:0.1:50.

[0017] Preferably, in step (1), the heating reaction is carried out at a temperature of 80℃ for 4-8h.

[0018] Preferably, the chemical reaction in step (1) is as shown below:

[0019]

[0020] wherein: m=49; n=20;

[0021] a=10, 11, 12, 13 or 14;

[0022] b=4, 5, 6, 7, 8, 9 or 10;

[0023] c=0, 1, 2, 3 or 4;

[0024] x=0, 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10;

[0025] y=0, 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10.

[0026] Preferably, in step (2), the mass ratio of the functional body of the leather antifouling, noise-reducing and hand-feeling agent, isomeric tridecanol polyoxyethylene ether 1305, isomeric tridecanol polyoxyethylene ether 1307 and deionized water is 50:3:7:90.

[0027] Preferably, in step (2), the heating is carried out at a temperature of 40℃.

[0028] Preferably, in step (2), the stirring and dispersing is carried out at a speed of 500r / min.

[0029] The stirring and dispersing is carried out for 30min, and the continued stirring and dispersing is carried out for 3h.

[0030] The present application has the following advantages:

[0031] 1. The leather antifouling, noise-reducing and hand-feeling agent does not contain fluorine, and is not limited in use due to the fluorine ban.

[0032] 2. Unlike conventional hyperbranching, this solution uses hydrosilylation hyperbranching, which allows for more flexible structural design and a higher silicon crosslinking density. This results in better anti-fouling and noise reduction effects, and also improves the physical properties of the coating system. Specifically, this invention uses hydrogen-terminated polydimethylmethylhydrosiloxane to add to dielyl polyether, allyl methacrylate, etc., to prepare hyperbranched polyether-modified vinyl hydrogen-containing silicone oil. This results in hydrophilicity and self-crosslinking properties, giving it good compatibility and stability, as well as silicon density due to self-crosslinking, thus providing better anti-fouling and noise reduction effects.

[0033] 3. The leather anti-fouling and sound-absorbing hand feel agent of the present invention has a wide range of adjustable hand feel and is applicable to a wider range of applications. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a diagram illustrating the antifouling performance of Example 1.

[0036] Figure 2 This is a diagram illustrating the antifouling performance of Example 2.

[0037] Figure 3 This is a diagram illustrating the antifouling performance of Example 3.

[0038] Figure 4 This is a diagram illustrating the antifouling performance of Example 4.

[0039] Figure 5 This is a display image showing the anti-fouling performance of GF, a similar product sold in the market. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0041] Example 1

[0042] This embodiment provides a method for preparing a stain-resistant and sound-absorbing hand-feeling agent for leather, the preparation method comprising the following steps:

[0043] (1) 12 parts of bisallyl polyether (commercially available), 7.5 parts of allyl methacrylate (commercially available), 0.1 part of Karstedt catalyst (commercially available), 50 parts of hydrogen-terminated polydimethylmethylhydrogen siloxane RH-LHC-3 (commercially available) are sequentially added into a reactor, and heated to 80°C, and kept for 6 hours to obtain an intermediate, and the specific reaction process is as follows:

[0044]

[0045] wherein m = 49; n = 20; a = 12; b = 6; c = 2; x = 6; y = 0.

[0046] (2) 50 parts of the intermediate, 3 parts of isomeric tridecanol polyoxyethylene ether 1305 (commercially available), and 7 parts of isomeric tridecanol polyoxyethylene ether 1307 (commercially available) are sequentially added into a dispersion kettle, then heated to 40°C, dispersed at 500 r / min for 30 min, then 90 parts of water is slowly added and continuously stirred and dispersed for 3 hours, after the dispersion is completed, the temperature is lowered to room temperature, and the product is discharged to obtain a blue light-emitting emulsion, thereby obtaining the stain-repellent, sound-damping and touch-improving agent for leather.

[0047] wherein 1 part = 10 g, and the same below.

[0048] Example 2

[0049] The embodiment provides a preparation method of a stain-repellent, sound-damping and touch-improving agent for leather, and the preparation method comprises the following steps:

[0050] (1) 12 parts of bisallyl polyether (commercially available), 7.5 parts of allyl methacrylate (commercially available), 0.1 part of Karstedt catalyst (commercially available), 50 parts of hydrogen-terminated polydimethylmethylhydrogen siloxane RH-LHC-3 (commercially available) are sequentially added into a reactor, and heated to 80°C, and kept for 6 hours to obtain an intermediate, and the specific reaction process is as follows:

[0051]

[0052] wherein m = 49; n = 20; a = 12; b = 6; c = 2; x = 8; y = 0.

[0053] (2) 50 parts of the intermediate, 3 parts of isomeric tridecanol polyoxyethylene ether 1305 (commercially available), and 7 parts of isomeric tridecanol polyoxyethylene ether 1307 (commercially available) are sequentially added into a dispersion kettle, then heated to 40°C, dispersed at 500 r / min for 30 min, then 90 parts of water is slowly added and continuously stirred and dispersed for 3 hours, after the dispersion is completed, the temperature is lowered to room temperature, and the product is discharged to obtain a blue light-emitting emulsion, thereby obtaining the stain-repellent, sound-damping and touch-improving agent for leather.

[0054] Example 3

[0055] The embodiment provides a preparation method of a stain-proof and sound-damping hand feel agent for leather, and the preparation method comprises the following steps:

[0056] (1) 12 parts of a double allyl polyether (commercially available), 7.5 parts of allyl methacrylate (commercially available), 0.1 part of a Karstedt catalyst (commercially available) and 50 parts of hydrogen-terminated polydimethylmethylhydrogen siloxane RH-LHC-3 (commercially available) are sequentially added into a reactor, and then the temperature is increased to 80 DEG C, and the reaction is kept for 6 hours to obtain an intermediate, and the specific reaction process is as follows:

[0057]

[0058] In the formula, m=49, n=20, a=12, b=6, c=2, x=0 and y=6.

[0059] (2) 50 parts of the intermediate, 3 parts of isomeric tridecanol polyoxyethylene ether 1305 (commercially available) and 7 parts of isomeric tridecanol polyoxyethylene ether 1307 (commercially available) are sequentially added into a dispersion kettle, then the temperature is increased to 40 DEG C, and the dispersion is kept at 500 r / min for 30 minutes, then 90 parts of water is slowly added, and the stirring and dispersion are kept for 3 hours, then the temperature is decreased to room temperature, and the product is discharged to obtain a blue light-emitting emulsion, that is, the stain-proof and sound-damping hand feel agent for leather.

[0060] Example 4

[0061] The embodiment provides a preparation method of a stain-proof and sound-damping hand feel agent for leather, and the preparation method comprises the following steps:

[0062] (1) 12 parts of a double allyl polyether (commercially available), 7.5 parts of allyl methacrylate (commercially available), 0.1 part of a Karstedt catalyst (commercially available) and 50 parts of hydrogen-terminated polydimethylmethylhydrogen siloxane RH-LHC-3 (commercially available) are sequentially added into a reactor, and then the temperature is increased to 80 DEG C, and the reaction is kept for 6 hours to obtain an intermediate, and the specific reaction process is as follows:

[0063]

[0064] In the formula, m=49, n=20, a=12, b=6, c=2, x=0 and y=8.

[0065] (2) 50 parts of the intermediate, 3 parts of isomeric tridecanol polyoxyethylene ether 1305 (commercially available) and 7 parts of isomeric tridecanol polyoxyethylene ether 1307 (commercially available) are sequentially added into a dispersion kettle, then the temperature is increased to 40 DEG C, and the dispersion is kept at 500 r / min for 30 minutes, then 90 parts of water is slowly added, and the stirring and dispersion are kept for 3 hours, then the temperature is decreased to room temperature, and the product is discharged to obtain a blue light-emitting emulsion, that is, the stain-proof and sound-damping hand feel agent for leather.

[0066] Verification example

[0067] The anti-staining, noise-reducing feel agents obtained in Examples 1-4 and a commercially available product (anti-staining, noise-reducing feel agent GF) were added to a finishing system, and then sprayed or rolled onto a leather or artificial leather, and the anti-staining and noise-reducing properties of the jeans were measured after drying, and the results are shown in Table 1.

[0068] Table 1

[0069]

[0070] As can be seen from the results in Table 1, the anti-staining, noise-reducing feel agents obtained in Examples 1-4 are superior to the commercially available product in terms of the main performance indicators.

[0071] The above description is merely a specific implementation of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, and all such changes or replacements should be encompassed within the scope of protection of the present application. Therefore, the scope of protection of the present application should be subject to the scope of protection of the claims.

Claims

1. A stain-resistant and sound-absorbing leather hand feel agent, characterized in that, Including the functional components of a leather anti-fouling and sound-absorbing hand feel agent as shown in Formula I: Formula I Where m=49; a = 10, 11, 12, 13 or 14; b = 4, 5, 6, 7, 8, 9 or 10; c = 1, 2, 3, or 4; x = 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10; y = 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10; The preparation method of the functional main body of the leather anti-fouling and sound-absorbing hand feel agent is as follows: Diallyl polyether, allyl methacrylate, catalyst, and hydrogen-terminated polydimethylmethylhydrosiloxane are mixed, and then heated to react; wherein: The mass ratio of diallyl polyether, allyl methacrylate, catalyst, and hydrogen-terminated polydimethylmethylhydrosiloxane is 12:7.5:0.1:

50. The heating reaction is carried out at a temperature of 80°C for 4 to 8 hours.

2. The method for preparing the anti-fouling and sound-absorbing leather hand-feeling agent according to claim 1, characterized in that, The preparation method includes the following steps: (1) Mix diallyl polyether, allyl methacrylate, catalyst, and hydrogen-terminated polydimethylmethylhydrosiloxane, and then heat to react to obtain the functional main body of leather anti-fouling and sound-absorbing hand feel agent. (2) The functional main body of the leather anti-fouling and sound-absorbing hand feel agent is mixed with isomeric tridecyl alcohol polyoxyethylene ether 1305 and isomeric tridecyl alcohol polyoxyethylene ether 1307, then heated and stirred to disperse, and then deionized water is added to continue stirring and dispersing, thus obtaining the leather anti-fouling and sound-absorbing hand feel agent.

3. The preparation method according to claim 2, characterized in that, In step (1), the mass ratio of diallyl polyether, allyl methacrylate, catalyst, and hydrogen-terminated polydimethylmethylhydrosiloxane is 12:7.5:0.1:

50.

4. The preparation method according to claim 2, characterized in that, In step (1), the temperature of the heating reaction is 80°C and the heating reaction time is 4~8h.

5. The preparation method according to claim 2, characterized in that, In step (2), the mass ratio of the functional body of the leather anti-fouling and sound-absorbing hand feel agent, isomeric tridecyl alcohol polyoxyethylene ether 1305, isomeric tridecyl alcohol polyoxyethylene ether 1307, and deionized water is 50:3:7:

90.

6. The preparation method according to claim 2, characterized in that, In step (2), the heating temperature is 40°C.

7. The preparation method according to claim 2, characterized in that, In step (2), the stirring and dispersing speed is 500 r / min; The stirring and dispersion time is 30 minutes, and the stirring and dispersion time is 3 hours.

Images