Non-corrosive heavy oil removing surfactant and preparation method thereof

Abstract

The invention relates to a non-corrosive heavy oil removing surfactant and a preparation method thereof, and belongs to the technical field of surfactants, and the non-corrosive heavy oil removing surfactant comprises an anionic surfactant, a nonionic surfactant, a compound auxiliary agent and deionized water. According to the invention, sodium alpha-olefin sulfonate and ethoxylated alkyl ammonium sulfate are selected to form an anionic surfactant, coco fatty acid diethanolamide and fatty alcohol-polyoxyethylene ether are selected to form a nonionic surfactant, the anionic surfactant and the nonionic surfactant are combined for use, and the components in the system supplement each other, so that the heavy oil removal effect of the finished product is effectively realized; in addition, a compound auxiliary agent composed of n-butyl alcohol, ethylenediamine oleate and sodium silicate is also added, so that the components of the system can be effectively assisted to further improve the heavy oil removal effect. The composition does not contain halogen, is non-corrosive, is safe to use, and is mild and non-irritant.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of surfactants, and particularly relates to a non-corrosive heavy oil removal surfactant and a preparation method thereof. BACKGROUND

[0002] With the development of market economy and the improvement of the quality of life of the nation, consumers begin to put forward new requirements for household cleaning products, such as heavy oil removal performance for coping with Chinese oil stains. Most of the existing surfactants for removing heavy oil on the market have good effects on light oil stains, but when facing heavy oil with high viscosity and complex composition, they often have problems such as insufficient penetration and low emulsification efficiency, and after cleaning, oil stains are easily left or secondarily precipitated, resulting in incomplete oil removal and difficulty in meeting the harsh requirements of household or kitchen cleaning. In addition, in order to improve the cleaning efficiency, many high-efficiency composite surfactant formulations will introduce halogen-containing components. Although these halogen-containing substances perform well in oil removal, their inherent corrosiveness can easily cause the rusting and damage of the products, shorten their service life, and also have certain harm to the health of the users.

[0003] Therefore, it has important practical significance and application value to provide a non-corrosive heavy oil removal surfactant and a preparation method thereof to overcome the above problems. SUMMARY

[0004] The purpose of the present application is to provide a non-corrosive heavy oil removal surfactant and a preparation method thereof, which solves the problems of poor heavy oil removal effect and poor corrosion resistance in the existing composite surfactant technology.

[0005] The purpose of the present application can be achieved by the following technical solutions:

[0006] A non-corrosive heavy oil removal surfactant and a preparation method thereof, comprising the following raw materials:

[0007] Anionic surfactant, non-ionic surfactant, compounding aid, deionized water.

[0008] As a preferred technical solution of the present application, the non-corrosive heavy oil removal surfactant without halogen comprises 15-60 parts by weight of anionic surfactant, 50-90 parts by weight of non-ionic surfactant, 12-20 parts by weight of compounding aid, and 8-11 parts by weight of deionized water.

[0009] As a preferred technical solution of the present application, the anionic surfactant comprises sodium alpha-alkenyl sulfonate and ethoxylated alkyl ammonium sulfate.

[0010] Further, the mass ratio of the sodium alpha-alkenyl sulfonate and the ethoxylated alkyl ammonium sulfate is 1-2:2-4.

[0011] Further, the sodium α-olefin sulfonate includes at least one of sodium α-olefin sulfonate with a carbon chain of C 14 , sodium α-olefin sulfonate with a carbon chain of C 16 , and sodium α-olefin sulfonate with a carbon chain of C 18 .

[0012] Preferably, the sodium α-olefin sulfonate includes any one of sodium α-olefin sulfonate with a carbon chain of C 14 , sodium α-olefin sulfonate with a carbon chain of C 16 , sodium α-olefin sulfonate with a carbon chain of C 16 , and sodium α-olefin sulfonate with a carbon chain of C 18 .

[0013] More preferably, the sodium α-olefin sulfonate includes sodium α-olefin sulfonate with a carbon chain of C 16 .

[0014] C 16 , and sodium α-olefin sulfonate with a carbon chain of C 18 . The sodium α-olefin sulfonate with a carbon chain of C 18 has a longer molecular chain, a slower molecular diffusion speed, and a longer wetting time, and needs to adopt a certain conformation to be adsorbed on the interface, so the present application preferably uses sodium α-olefin sulfonate with a carbon chain of C 16 , which has a smaller critical micelle concentration and better wetting performance.

[0015] As a preferred technical solution of the present application, the non-ionic surfactant includes coconut diethanolamide and fatty alcohol polyoxyethylene ether.

[0016] The coconut diethanolamide contains an amide group, can produce abundant and delicate foam, and can also be compatible with other surfactants to form micelles with different diameters, reduce the flow speed of the foam on the surface of the cleaned object, and help stabilize the foam.

[0017] The fatty alcohol polyoxyethylene ether has good compatibility with other surfactants, can effectively reduce the interfacial tension, emulsify oil into small droplets and uniformly disperse them, and thus has strong decontamination ability.

[0018] Further, the mass ratio of the coconut diethanolamide and the fatty alcohol polyoxyethylene ether is 1-3:4-6.

[0019] Still further, the fatty alcohol polyoxyethylene ether includes fatty alcohol polyoxyethylene ether AEO-3 or fatty alcohol polyoxyethylene ether AEO-5.

[0020] Preferably, the fatty alcohol polyoxyethylene ether comprises fatty alcohol polyoxyethylene ether AEO-3.

[0021] As a preferred technical solution of the present application, the complexing agent comprises n-butanol, ethylenediamine oleate and sodium silicate.

[0022] Further, the mass ratio of the n-butanol, ethylenediamine oleate and sodium silicate is 4:1-1.5:2-3.

[0023] A non-corrosive degreasing surfactant and a preparation method thereof, comprising the following steps:

[0024] (1) At normal temperature and pressure, the anionic surfactant and the non-ionic surfactant are mixed and stirred to obtain standby material A;

[0025] (2) The sodium salt and deionized water are mixed and stirred, then the organic base is added and stirred uniformly, then the alcohol is mixed and stirred, and then the standby material A is added while stirring, and the stirring speed is controlled to obtain the finished product of the non-corrosive degreasing surfactant.

[0026] As a preferred technical solution of the present application, the stirring time in step (1) is 15-30 min; and the stirring speed in step (2) is 60-80 r / min, and the stirring time is 10-15 min.

[0027] The present application has the following advantages:

[0028] (1) The sodium alpha-alkenyl sulfonate can provide a small critical micelle concentration and good wetting property, the fatty alcohol polyoxyethylene ether can reduce the interfacial tension, the ethoxylated ammonium alkyl sulfate can prevent oil stain particles from re-aggregating, and the cocamide diethanol can produce abundant and fine foam and stabilize the foam; therefore, different non-ionic surfactants and anionic surfactants are compounded in the present application, which complement each other, and the wetting, interfacial tension reduction, dispersion and foam stabilization are started from different dimensions, so that the degreasing effect of the finished product is effectively realized.

[0029] (2) The present application selects n-butanol, ethylenediamine oleate and sodium silicate as the complexing agent, part of the n-butanol enters the oil-water interfacial film to play the role of an auxiliary agent, which helps to adjust the hydrophilic and lipophilic properties of the interfacial film, thereby increasing the wetting and permeability of the system, which is beneficial to the surfactant product to spread more quickly on the dirt surface; the ethylenediamine oleate plays a role in wrapping oil stains, so that the oil stains can easily separate under the action of the solution force, significantly improving the solubilizing capacity and cleaning efficiency of the system; the sodium silicate can introduce positively charged sodium ions and hydrolysis products silicic acid in the form of colloidal particles, further reducing the CMC of the system; therefore, the complexing agent added in the present application can effectively assist the system to strengthen the solubilization and removal of oil stains, significantly improving the high degreasing effect of the finished product.

[0030] (3) The surfactant composition prepared by the application does not contain halogen, is safe to use, has no corrosion and is mild and non-irritating, and is friendly to human skin. In addition, the preparation method of the surfactant is simple and suitable for industrial production and large-scale production. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0032] The ethoxylated ammonium alkyl sulfate used in the embodiments, comparative examples and test examples of the application is OP4SA, purchased from Nantong Xitai Chemical Co., Ltd.; the coconut diethanolamide used is 456546, purchased from Shandong Yaotong Industry Co., Ltd.; the above will not be described in detail hereinafter.

[0033] Embodiment 1

[0034] A non-corrosive degreasing surfactant and a preparation method thereof, comprising the following raw materials by weight:

[0035] 38 parts by weight of anionic surfactant, wherein the anionic surfactant comprises sodium alpha-alkenyl sulfonate and ethoxylated ammonium alkyl sulfate in a mass ratio of 1:1, i.e., both the sodium alpha-alkenyl sulfonate and the ethoxylated ammonium alkyl sulfate are 19 parts by weight;

[0036] The sodium alpha-alkenyl sulfonate comprises sodium alpha-alkenyl sulfonate with a carbon chain of C 16 ;

[0037] 70 parts by weight of non-ionic surfactant, wherein the non-ionic surfactant comprises coconut diethanolamide and fatty alcohol polyoxyethylene ether AEO-3 in a mass ratio of 2:5, i.e., the coconut diethanolamide is 20 parts by weight and the fatty alcohol polyoxyethylene ether AEO-3 is 50 parts by weight;

[0038] 20 parts by weight of compounding aid, wherein the compounding aid comprises n-butanol, ethylenediamine oleate and sodium silicate in a mass ratio of 4:1:2, i.e., the n-butanol is 11.5 parts by weight, the ethylenediamine oleate is 2.9 parts by weight, and the sodium silicate is 5.6 parts by weight;

[0039] 8 parts by weight of deionized water;

[0040] The preparation method of the non-corrosive degreasing surfactant without halogen comprises the following steps:

[0041] (1) at normal temperature and pressure, mixing and stirring the anionic surfactant and the nonionic surfactant for 15 min to obtain standby material A;

[0042] (2) mixing the sodium salt and the deionized water, then adding the organic base and stirring until uniform, then mixing with alcohol, and then adding the standby material A while stirring, and stirring at a speed of 60 r / min for 12 min to obtain the finished product of the non-corrosive heavy oil removal surfactant.

[0043] Example 2

[0044] A non-corrosive heavy oil removal surfactant and a preparation method thereof, comprising the following raw materials by weight:

[0045] 60 parts by weight of anionic surfactant, wherein the anionic surfactant comprises sodium α-alkenyl sulfonate and ammonium ethoxylated alkyl sulfate in a mass ratio of 1.5:3, i.e. 20 parts by weight of sodium α-alkenyl sulfonate and 40 parts by weight of ammonium ethoxylated alkyl sulfate;

[0046] The sodium α-alkenyl sulfonate comprises sodium α-alkenyl sulfonate with a carbon chain of C 14 and sodium α-alkenyl sulfonate with a carbon chain of C 16 in equal mass, i.e. 10 parts by weight of sodium α-alkenyl sulfonate with a carbon chain of C 14 and 10 parts by weight of sodium α-alkenyl sulfonate with a carbon chain of C 16 ;

[0047] 50 parts by weight of nonionic surfactant, wherein the nonionic surfactant comprises coconut diethanolamide and fatty alcohol polyoxyethylene ether AEO-3 in a mass ratio of 1:4, i.e. 10 parts by weight of coconut diethanolamide and 40 parts by weight of fatty alcohol polyoxyethylene ether AEO-3;

[0048] 16 parts by weight of compounding aid, wherein the compounding aid comprises n-butanol, ethylenediamine oleate and sodium silicate in a mass ratio of 4:1.2:2.5, i.e. 8.3 parts by weight of n-butanol, 2.5 parts by weight of ethylenediamine oleate and 5.2 parts by weight of sodium silicate;

[0049] 11 parts by weight of deionized water;

[0050] The preparation method of the non-corrosive heavy oil removal surfactant without halogen comprises the following steps:

[0051] (1) at normal temperature and pressure, mixing and stirring the anionic surfactant and the nonionic surfactant for 22 min to obtain standby material A;

[0052] (2) mix the sodium salt and deionized water, then add the organic base and stir until uniform, then add the alcohol and mix, then add the standby material A while stirring, control the stirring speed at 80 r / min, and stir for 10 min to obtain the finished product of the non-corrosive heavy oil removal surfactant.

[0053] Example 3

[0054] A non-corrosive heavy oil removal surfactant and a preparation method thereof, comprising the following raw materials by weight:

[0055] 15 parts by weight of anionic surfactant, wherein the anionic surfactant comprises sodium α-alkenyl sulfonate and ammonium ethoxylated alkyl sulfate in a mass ratio of 1:4, i.e. 3 parts by weight of sodium α-alkenyl sulfonate and 12 parts by weight of ammonium ethoxylated alkyl sulfate;

[0056] The sodium α-alkenyl sulfonate comprises sodium α-alkenyl sulfonate with a carbon chain of C 18 ;

[0057] 90 parts by weight of non-ionic surfactant, wherein the non-ionic surfactant comprises coconut diethanolamide and fatty alcohol polyoxyethylene ether AEO-5 in a mass ratio of 1:2, i.e. 30 parts by weight of coconut diethanolamide and 60 parts by weight of fatty alcohol polyoxyethylene ether AEO-5;

[0058] 12 parts by weight of compounding aid, wherein the compounding aid comprises n-butanol, ethylenediamine oleate, and sodium silicate in a mass ratio of 4:1.5:3, i.e. 5.6 parts by weight of n-butanol, 2.1 parts by weight of ethylenediamine oleate, and 4.3 parts by weight of sodium silicate;

[0059] 9.5 parts by weight of deionized water;

[0060] The preparation method of the non-corrosive heavy oil removal surfactant without halogen comprises the following steps:

[0061] (1) At room temperature and atmospheric pressure, mix and stir the anionic surfactant and the non-ionic surfactant for 30 min to obtain standby material A;

[0062] (2) Mix the sodium salt and deionized water, then add the organic base and stir until uniform, then add the alcohol and mix, then add the standby material A while stirring, control the stirring speed at 70 r / min, and stir for 15 min to obtain the finished product of the non-corrosive heavy oil removal surfactant.

[0063] Comparative Example 1

[0064] Compared with Example 1, the difference lies in that the sodium α-alkenyl sulfonate with a carbon chain of C 16 is not added, and the missing weight is supplemented by fatty alcohol polyoxyethylene ether AEO-3, ammonium ethoxylated alkyl sulfate, and coconut diethanolamide in a mass ratio of 50:19:20, and the rest remains unchanged.

[0065] Comparative Example 2

[0066] Compared with Example 1, the difference lies in that no fatty alcohol polyoxyethylene ether AEO-3 is added, and the sodium α-olefin sulfonate, the ethoxylated ammonium alkyl sulfate and the coconut diethanolamide are supplemented in a weight-to-mass ratio of 19:50:20, and the rest remains unchanged. 16

[0067] Comparative Example 3

[0068] Compared with Example 1, the difference lies in that no ethoxylated ammonium alkyl sulfate is added, and the sodium α-olefin sulfonate, the fatty alcohol polyoxyethylene ether AEO-3 and the coconut diethanolamide are supplemented in a weight-to-mass ratio of 19:50:20, and the rest remains unchanged. 16

[0069] Comparative Example 4

[0070] Compared with Example 1, the difference lies in that no coconut diethanolamide is added, and the sodium α-olefin sulfonate, the fatty alcohol polyoxyethylene ether AEO-3 and the ethoxylated ammonium alkyl sulfate are supplemented in a weight-to-mass ratio of 19:50:19, and the rest remains unchanged. 16

[0071] Comparative Example 5

[0072] Compared with Example 1, the difference lies in that no n-butanol is added, and the ethylenediamine oleate and sodium silicate are supplemented in a weight-to-mass ratio of 2.9:5.6, and the rest remains unchanged.

[0073] Comparative Example 6

[0074] Compared with Example 1, the difference lies in that no ethylenediamine oleate is added, and the n-butanol and sodium silicate are supplemented in a weight-to-mass ratio of 11.5:5.6, and the rest remains unchanged.

[0075] Comparative Example 7

[0076] Compared with Example 1, the difference lies in that no sodium silicate is added, and the n-butanol and ethylenediamine oleate are supplemented in a weight-to-mass ratio of 11.5:2.9, and the rest remains unchanged.

[0077] Test Example 1

[0078] Heavy oil test:

[0079] The heavy oil removal surfactants prepared in Examples 1-3 and Comparative Examples 1-7 were tested for detergency according to the test method for detergency in QB / T 4348-2012, and the results are shown in Table 1.

[0080] Table 1​​​

[0081] Stain removal (%) Example 1 98.7 Example 2 98.3 Example 3 98.0 Comparative Example 1 87.6 Comparative Example 2 87.1 Comparative Example 3 89.5 Comparative Example 4 89.9 Comparative Example 5 92.4 Comparative Example 6 91.8 Comparative Example 7 93.3

[0082] As can be seen from Table 1, the oil removal effects of the example groups are all better than those of the comparative groups, because different nonionic surfactants and anionic surfactants are compounded in the present application, the components in the system complement each other, and the oil removal effect of the finished product can be effectively realized. In addition, the present application also adds a compounding aid, which further significantly improves the oil removal effect on the basis of the foregoing. In more detail, in the example groups, the oil removal effect of the non-corrosive oil removal surfactant prepared in Example 1 is the best, followed by the non-corrosive oil removal surfactants prepared in Examples 2 and 3, which shows that the oil removal effect of the product obtained under the components and the ratio of Example 1 of the present application is better, and in the selection of the carbon chain of sodium α-alkenyl sulfonate and fatty alcohol polyoxyethylene ether, the carbon chain of C 16 of sodium α-alkenyl sulfonate and fatty alcohol polyoxyethylene ether AEO-3 is preferably selected.

[0083] Test Example 2

[0084] Corrosion resistance test:

[0085] According to GB / T 21241-2007, the corrosion resistance of the non-corrosive oil removal surfactants prepared in Examples 1-3 to the same tile and Z 30 cast iron was tested, and the results are shown in Table 2.

[0086] Table 2

[0087] Ceramic tile Cast iron Example 1 Pass 0 grade Example 2 Pass 0 grade Example 3 Pass 0 grade

[0088] As can be seen from Table 2, the non-corrosive oil removal surfactants prepared in Examples 1-3 of the present application are non-corrosive. Because the raw materials used in the present application do not contain halogen, it is safer to use, and it is mild and non-irritating, and it is also friendly to human skin.

[0089] In the description of the specification, the description of the reference terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0090] The above merely illustrates and describes the concept of the present application, and those skilled in the art can make various modifications or supplements to the described specific embodiments or adopt similar ways to replace, as long as the modifications or supplements do not deviate from the concept of the present application or exceed the scope defined by the present claims, and the modifications or supplements shall fall within the protection scope of the present application.

Claims

1. A non-corrosive de-oiling surfactant and a method for preparing the same, characterized in that, The composition comprises 15-60 parts by weight of anionic surfactant, 50-90 parts by weight of nonionic surfactant, 12-20 parts by weight of complexing agent, and 8-11 parts by weight of deionized water.

2. The non-corrosive de-oiling surfactant according to claim 1, characterized in that, The anionic surfactant comprises sodium alpha-alkenyl sulfonate and ethoxylated ammonium alkyl sulfate in a mass ratio of 1-2:2-4.

3. The non-corrosive de-oiling surfactant according to claim 2, characterized in that, The sodium alpha-olefin sulfonate includes at least one of sodium alpha-olefin sulfonate having a carbon chain of C 14 , sodium alpha-olefin sulfonate having a carbon chain of C 16 , and sodium alpha-olefin sulfonate having a carbon chain of C 18 .

4. The non-corrosive de-oiling surfactant according to claim 3, characterized in that, The sodium α-olefin sulfonate includes any one of sodium α-olefin sulfonate having a carbon chain of C 14 sodium α-olefin sulfonate having a carbon chain of C 16 sodium α-olefin sulfonate having a carbon chain of C 16 sodium α-olefin sulfonate having a carbon chain of C 18 sodium α-olefin sulfonate having a carbon chain of C 5. The non-corrosive, de-oiling surfactant of claim 1, wherein, The nonionic surfactant comprises coconut diethanolamide and fatty alcohol polyoxyethylene ether in a mass ratio of 1-3:4-6.

6. The non-corrosive, de-oiling surfactant of claim 5, wherein, The fatty alcohol polyoxyethylene ether comprises fatty alcohol polyoxyethylene ether AEO-3 or fatty alcohol polyoxyethylene ether AEO-5.

7. The non-corrosive, de-oiling surfactant of claim 1, wherein, The complexing agent comprises n-butanol, ethylenediamine oleate, and sodium silicate.

8. The non-corrosive, de-oiling surfactant according to claim 7, characterized in that, The mass ratio of n-butanol, ethylenediamine oleate, and sodium silicate is 4:1-1.5:2-3.

9. A process for the preparation of a non-corrosive degreasing surfactant according to any one of claims 1 to 8, characterized in that, The method comprises the following steps: (1) Mix and stir the anionic surfactant and nonionic surfactant at room temperature and normal pressure to obtain standby material A; (2) Mix the sodium salt and deionized water, then add the organic base and stir until uniform, then add the alcohol and mix, then add the standby material A while stirring, and control the stirring speed to obtain the finished product of the non-corrosive heavy oil removal surfactant.

10. The method for preparing a non-corrosive heavy oil removal surfactant according to claim 9, characterized in that, The stirring time in step (1) is 15-30 min; the speed of the controlled speed stirring in step (2) is 60-80 r / min, and the time is 10-15 min.