A paraffin emulsifier and its preparation method and application

Abstract

The present invention provides a paraffin emulsifier and a preparation method and application thereof, wherein the paraffin emulsifier comprises, by weight, 20-40 parts of Tween 80, 10-30 parts of Span 80, 5-15 parts of fatty alcohol polyoxyethylene ether, 20-40 parts of stearic acid monoglyceride and 5-15 parts of stearic acid polyoxyethylene ether. The paraffin emulsifier provided by the present invention can effectively improve the stability and acid and alkali resistance of the product emulsified paraffin, and only a small amount of dosage is required to achieve the emulsification effect during the emulsification treatment, and the product emulsified paraffin can also give the fabric better smoothness.

Description

Technical Field

[0001] The invention belongs to the field of paraffin chemical industry, and specifically relates to a paraffin emulsifier and a preparation method and application thereof, and in particular relates to a paraffin emulsifier with good emulsification effect and a preparation method and application thereof. Background Art

[0002] In the textile industry, the fabric needs to be dipped in an emulsified paraffin solution to improve the lubricity and softness of the fabric fibers. During the sizing process, the sizing yarn feels smooth, the fabric breakage rate decreases, and the fabric opening is clear, which can improve the weaving efficiency of the product.

[0003] Currently, most of the emulsified paraffin produced adopts the production process of using cationic surfactants under acidic conditions, anionic surfactants, nonionic surfactants or fatty acid soaps as emulsifiers under alkaline conditions. The disadvantages of this method are that the amount of emulsifier is large, the cost is high, the emulsified paraffin produced is easy to demulsify and precipitate when encountering acidic or alkaline media, and the emulsion stability is poor.

[0004] CN109824914B discloses an emulsified paraffin and its preparation method and application, which is composed of paraffin, emulsified water, and a composite emulsifier; in the emulsified paraffin, the mass fraction of the composite emulsifier is 3-5%; the composite emulsifier, by weight, includes the following components: Span-80: 90-100 parts; Tween-80: 40-50 parts; Peregal: 10-20 parts; OP-10: 30-40 parts; triethanolamine: 10-20 parts; stearic acid: 5-10 parts; ethylene glycol, 37-48 parts. The emulsified paraffin provided by the invention has the characteristics of good emulsion dispersibility, high stability, long shelf life, strong water solubility, good film-forming performance, etc.

[0005] Since the conventional emulsifier, that is, the emulsified paraffin produced by the emulsification method, has a series of stability, acid and alkali resistance and other problems, therefore, how to provide an emulsification method or an emulsifier that can improve the stability of the emulsified paraffin has become a problem to be solved urgently. Summary of the invention

[0006] In view of the deficiencies of the prior art, the object of the present invention is to provide a paraffin emulsifier and a preparation method and application thereof, and in particular to provide a paraffin emulsifier with good emulsification effect and a preparation method and application thereof. The paraffin emulsifier provided by the present invention can effectively improve the stability and acid and alkali resistance of the product emulsified paraffin, and at the same time, only a small amount is required during the emulsification treatment to achieve the emulsification effect, and the product emulsified paraffin can also give the fabric better smoothness.

[0007] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0008] In a first aspect, the present invention provides a paraffin emulsifier, which comprises, by weight, 20-40 parts of Tween 80, 10-30 parts of Span 80, 5-15 parts of fatty alcohol polyoxyethylene ether, 20-40 parts of stearic acid monoglyceride and 5-15 parts of stearic acid polyoxyethylene ether.

[0009] The amount of Tween 80 can be 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, 30 parts, 32 parts, 34 parts, 36 parts, 38 parts or 40 parts, the amount of Span 80 can be 10 parts, 12 parts, 14 parts, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts, 26 parts, 28 parts or 30 parts, and the amount of fatty alcohol polyoxyethylene ether can be 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts The number of parts of stearic acid monoglyceride can be 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, 30 parts, 32 parts, 34 parts, 36 parts, 38 parts or 40 parts, etc., the number of parts of stearic acid polyoxyethylene ether can be 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts or 15 parts, etc., but are not limited to the values ​​listed above, and other unlisted values ​​within the above numerical range are equally applicable.

[0010] The above-mentioned paraffin emulsifier is compounded by Tween 80, Span 80, fatty alcohol polyoxyethylene ether, stearic acid monoglyceride and stearic acid polyoxyethylene ether. The synergistic effect significantly improves the stability and acid and alkali resistance of the product emulsified paraffin. The emulsification effect can be achieved by adding only a small amount of emulsifier. At the same time, the product emulsified paraffin can also give the fabric better smoothness.

[0011] Preferably, the paraffin emulsifier comprises, by weight, 25-35 parts of Tween 80, 15-25 parts of Span 80, 7-13 parts of fatty alcohol polyoxyethylene ether, 25-35 parts of stearic acid monoglyceride and 7-13 parts of stearic acid polyoxyethylene ether.

[0012] Preferably, the fatty alcohol polyoxyethylene ether includes any one of emulsifier O-8, emulsifier O-10 or emulsifier O-15, or a combination of at least two of them, such as a combination of emulsifier O-8 and emulsifier O-10, a combination of emulsifier O-10 and emulsifier O-15, or a combination of emulsifier O-8 and emulsifier O-1, but is not limited to the above-listed combinations. Other combinations not listed within the above combination range are also applicable.

[0013] Preferably, the fatty alcohol polyoxyethylene ether is emulsifier O-10.

[0014] The above-mentioned specific fatty alcohol polyoxyethylene ether can further improve the stability and acid and alkali resistance of the product.

[0015] In a second aspect, the present invention provides a method for preparing the paraffin emulsifier as described above, the preparation method comprising the following steps:

[0016] The paraffin emulsifier is obtained by mixing Tween 80, Span 80, fatty alcohol polyoxyethylene ether, stearic acid monoglyceride and stearic acid polyoxyethylene ether.

[0017] In a third aspect, the present invention provides use of the paraffin emulsifier as described above in the preparation of emulsified paraffin.

[0018] In a fourth aspect, the present invention provides a method for preparing emulsified paraffin, the preparation method comprising the following steps:

[0019] The paraffin emulsifier as described above is mixed with paraffin and stirred to obtain the emulsified paraffin.

[0020] The emulsified paraffin obtained by the above method by using a specific paraffin emulsifier has the advantages of high stability and good acid and alkali resistance, and can also make the fabric smoother when used for fabric finishing.

[0021] Preferably, the mass ratio of the paraffin emulsifier to paraffin is (3-7):(93-97).

[0022] Preferably, the mixing and stirring is carried out at a temperature of 70-80°C.

[0023] Preferably, the stirring rate is 350-450 r / min.

[0024] Preferably, the stirring time is 20-40 min.

[0025] Wherein, the mass ratio of paraffin emulsifier to paraffin can be 3:97, 4:96, 5:95, 6:94 or 7:93, etc., the temperature can be 70°C, 71°C, 72°C, 73°C, 74°C, 75°C, 76°C, 78°C, 79°C or 80°C, etc., the stirring rate can be 350r / min, 360r / min, 370r / min, 380r / min, 390r / min, 400r / min, 410r / min, 420r / min, 430r / min, 440r / min or 450r / min, etc., and the stirring time can be 20min, 25min, 30min, 35min or 40min, etc., but are not limited to the values ​​listed above, and other values ​​not listed within the above numerical range are equally applicable.

[0026] In a fifth aspect, the present invention also provides emulsified paraffin prepared by the preparation method described above.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The invention provides a paraffin emulsifier, which is compounded by Tween 80, Span 80, fatty alcohol polyoxyethylene ether, stearic acid monoglyceride and stearic acid polyoxyethylene ether, and the stability and acid and alkali resistance of the product emulsified paraffin are significantly improved through synergistic effect. The emulsification effect can be achieved by adding only a small amount of emulsifier, and the product emulsified paraffin can also give fabrics better smoothness. DETAILED DESCRIPTION

[0029] In order to further explain the technical means and effects adopted by the present invention, the technical solution of the present invention is further described below in conjunction with the preferred embodiments of the present invention, but the present invention is not limited to the scope of the embodiments.

[0030] In the following examples, Tween 80, Span 80, polyoxyethylene stearate, emulsifier O-8, emulsifier O-10, and emulsifier O-15 were all purchased from Hai'an Petrochemical Plant in Jiangsu Province.

[0031] Example 1

[0032] This embodiment provides a paraffin emulsifier, and the specific composition (by weight) is as follows:

[0033] 30 parts of Tween 80, 20 parts of Span 80, 10 parts of emulsifier O-10, 30 parts of stearic acid monoglyceride, and 10 parts of stearic acid polyoxyethylene ether.

[0034] The preparation method is as follows: Tween 80, Span 80, emulsifier O-10, stearic acid monoglyceride and stearic acid polyoxyethylene ether are mixed and stirred to obtain the paraffin emulsifier.

[0035] Example 2

[0036] This embodiment provides a paraffin emulsifier, and the specific composition (by weight) is as follows:

[0037] Tween 80 25 parts, Span 80 25 parts, emulsifier O-10 7 parts, stearic acid monoglyceride 35 parts, stearic acid polyoxyethylene ether 7 parts.

[0038] The preparation method is similar to that of Example 1.

[0039] Example 3

[0040] This embodiment provides a paraffin emulsifier, and the specific composition (by weight) is as follows:

[0041] 35 parts of Tween 80, 15 parts of Span 80, 13 parts of emulsifier O-10, 25 parts of stearic acid monoglyceride, and 13 parts of stearic acid polyoxyethylene ether.

[0042] The preparation method is similar to that of Example 1.

[0043] Example 4

[0044] This embodiment provides a paraffin emulsifier, and the specific composition (by weight) is as follows:

[0045] 20 parts of Tween 80, 30 parts of Span 80, 5 parts of emulsifier O-10, 40 parts of stearic acid monoglyceride, and 5 parts of stearic acid polyoxyethylene ether.

[0046] The preparation method is similar to that of Example 1.

[0047] Example 5

[0048] This embodiment provides a paraffin emulsifier, and the specific composition (by weight) is as follows:

[0049] 40 parts of Tween 80, 10 parts of Span 80, 15 parts of emulsifier O-10, 20 parts of stearic acid monoglyceride, and 15 parts of stearic acid polyoxyethylene ether.

[0050] The preparation method is similar to that of Example 1.

[0051] Example 6

[0052] This embodiment provides a paraffin emulsifier, and the specific composition is consistent with that of Embodiment 1 except that the emulsifier O-10 is replaced by an equal amount of emulsifier O-8.

[0053] The preparation method is similar to that of Example 1.

[0054] Example 7

[0055] This embodiment provides a paraffin emulsifier, and the specific composition is consistent with that of Embodiment 1 except that the emulsifier O-10 is replaced by an equal amount of emulsifier O-15.

[0056] The preparation method is similar to that of Example 1.

[0057] Comparative Example 1

[0058] This comparative example provides a paraffin emulsifier, and its specific composition is consistent with that of Example 1 except that Tween 80 is not included and the reduced portion is proportionally distributed to Span 80, emulsifier O-10, stearic acid monoglyceride and stearic acid polyoxyethylene ether.

[0059] The preparation method is similar to that of Example 1.

[0060] Comparative Example 2

[0061] This comparative example provides a paraffin emulsifier, and its specific composition is consistent with that of Example 1 except that Span 80 is not included and the reduced portion is proportionally distributed to Tween 80, emulsifier O-10, stearic acid monoglyceride and stearic acid polyoxyethylene ether.

[0062] The preparation method is similar to that of Example 1.

[0063] Comparative Example 3

[0064] This comparative example provides a paraffin emulsifier, and the specific composition is consistent with Example 1 except that the emulsifier O-10 is not included and the reduced part is proportionally distributed to Span 80, Tween 80, stearic acid monoglyceride and stearic acid polyoxyethylene ether.

[0065] The preparation method is similar to that of Example 1.

[0066] Comparative Example 4

[0067] This comparative example provides a paraffin emulsifier, and its specific composition is consistent with Example 1 except that it does not contain stearic acid monoglyceride, and the reduced part is proportionally distributed to Span 80, emulsifier O-10, Tween 80 and stearic acid polyoxyethylene ether.

[0068] The preparation method is similar to that of Example 1.

[0069] Comparative Example 5

[0070] This comparative example provides a paraffin emulsifier, and its specific composition is consistent with that of Example 1 except that it does not contain stearic acid polyoxyethylene ether and the reduced portion is proportionally distributed to Span 80, emulsifier O-10, stearic acid monoglyceride and Tween 80.

[0071] The preparation method is similar to that of Example 1.

[0072] Application Example 1

[0073] This application example provides an emulsified paraffin, and the preparation method is as follows:

[0074] Paraffin wax and the paraffin emulsifier provided in Example 1 were mixed (mass ratio 95:5), stirred at 75° C. to completely mix, and then stirred at 400 r / min for 30 min to obtain the emulsified paraffin wax.

[0075] Application Example 2-7

[0076] Application Examples 2-7 respectively provide an emulsified paraffin wax, and the preparation process is consistent with Application Example 1 except that the paraffin wax emulsifier provided in Example 1 is replaced by an equal amount of the paraffin wax emulsifier provided in Examples 2-7.

[0077] Comparative Application Examples 1-5

[0078] Comparative Application Examples 1-5 respectively provide an emulsified paraffin wax. During the preparation process, except that the paraffin wax emulsifier provided in Example 1 is replaced by an equal amount of the paraffin wax emulsifier provided in Comparative Examples 1-5, the rest is the same as Application Example 1.

[0079] Effect test:

[0080] The stability (reference GB / T32775-2016, Grade 1 is the best, Grade 5 is the worst) and acid and alkali resistance (reference GB 5556-1985 for alkali resistance and GB / T 5555-2003 for acid resistance, Grade 1 is the best, Grade 3 is the worst) of the emulsified paraffin provided in Example 1-7 and Comparative Application Example 1-5 were tested, and the results are as follows:

[0081]

[0082]

[0083] From the above data, it can be found that the paraffin emulsifier provided by the present invention can effectively improve the stability and acid and alkali resistance of the product emulsified paraffin; by comparing application examples 1, 6-7, it can be found that the present invention can improve the stability and acid and alkali resistance of the product emulsified paraffin by selecting specific fatty alcohol polyoxyethylene ether; by comparing application examples 1-5, it can be found that the present invention can effectively improve the stability and acid and alkali resistance of the product emulsified paraffin by controlling the ratio of each component; by comparing application example 1 and comparative application examples 1-5, it can be found that the present invention adopts Tween 80, Span 80, fatty alcohol polyoxyethylene ether, stearic acid monoglyceride and stearic acid polyoxyethylene ether to form a compound, and the synergistic effect significantly improves the stability and acid and alkali resistance of the product emulsified paraffin.

[0084] Then, the emulsifying effect of the paraffin emulsifier provided by Examples 1-7 and Comparative Examples 1-5 was tested to test the minimum amount of emulsifier required for paraffin emulsification (as a percentage of the mass of paraffin), and the results were as follows:

[0085]

[0086] From the above data, it can be found that the paraffin emulsifier provided by the present invention can effectively reduce the amount of emulsifier used in the production of emulsified paraffin, thereby saving costs; by comparing application examples 1, 6-7, it can be found that the present invention can effectively reduce the amount of emulsifier used by selecting specific fatty alcohol polyoxyethylene ether; by comparing application examples 1-5, it can be found that the present invention can effectively reduce the amount of emulsifier used by controlling the ratio of each component; by comparing application example 1 and comparative application examples 1-5, it can be found that the present invention significantly reduces the amount of emulsifier used in the production of emulsified paraffin, thereby saving costs, by using a compound of Tween 80, Span 80, fatty alcohol polyoxyethylene ether, stearic acid monoglyceride and stearic acid polyoxyethylene ether.

[0087] The applicant declares that the present invention illustrates the paraffin emulsifier and its preparation method and application through the above-mentioned embodiments, but the present invention is not limited to the above-mentioned embodiments, that is, it does not mean that the present invention must rely on the above-mentioned embodiments to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

[0088] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0089] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A paraffin emulsifier, characterized in that The paraffin emulsifier is composed of 20-40 parts of Tween 80, 10-30 parts of Span 80, 5-15 parts of fatty alcohol polyoxyethylene ether, 20-40 parts of stearic acid monoglyceride and 5-15 parts of stearic acid polyoxyethylene ether in parts by weight.

2. The paraffin emulsifier according to claim 1, characterized in that The paraffin emulsifier is composed of 25-35 parts of Tween 80, 15-25 parts of Span 80, 7-13 parts of fatty alcohol polyoxyethylene ether, 25-35 parts of stearic acid monoglyceride and 7-13 parts of stearic acid polyoxyethylene ether in parts by weight.

3. The paraffin emulsifier according to claim 1 or 2, characterized in that The fatty alcohol polyoxyethylene ether includes any one of emulsifier O-8, emulsifier O-10 or emulsifier O-15, or a combination of at least two of them.

4. The paraffin emulsifier according to claim 3, characterized in that The fatty alcohol polyoxyethylene ether is emulsifier O-10.

5. A method for preparing a paraffin emulsifier according to any one of claims 1 to 4, characterized in that: The preparation method comprises the following steps: The paraffin emulsifier is obtained by mixing Tween 80, Span 80, fatty alcohol polyoxyethylene ether, stearic acid monoglyceride and stearic acid polyoxyethylene ether.

6. Use of the paraffin emulsifier according to any one of claims 1 to 4 in the preparation of emulsified paraffin.

7. A method for preparing emulsified paraffin, characterized in that: The preparation method comprises the following steps: The paraffin emulsifier according to any one of claims 1 to 4 is mixed and stirred with paraffin to obtain the emulsified paraffin.

8. The preparation method according to claim 7, characterized in that: The mass ratio of the paraffin emulsifier to the paraffin is (3-7):(93-97).

9. The preparation method according to claim 7, characterized in that: The mixing and stirring is carried out at a temperature of 70-80°C.

10. The preparation method according to claim 7, characterized in that: The stirring rate is 350-450 r / min.

11. The preparation method according to claim 7, characterized in that: The stirring time is 20-40 min.

12. An emulsified paraffin prepared according to the preparation method according to any one of claims 7 to 11.

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