TW524716B - Method for preparation of an alkyl diphenyl oxide sulfonic acid blend and viscosity control therein, and method for preparation of an admixture composition and of a surfactant - Google Patents

Abstract

This invention addresses methods and compositions for providing alkyl diphenyl oxide sulfonic acid blends at useful viscosities for use in surfactants such as DOWFAX-containing surfactants. The low viscosity alkyl diphenyl oxide sulfonic acid blend is made by admixing a fatty acid having a carboxylic chain length between 1 and 12 (for example, formic acid, acetic acid, propionic acid, butanoic acid, pentanoic acid, valeric acid, hexanoic acid, heptanoic acid, octanoic acid, nonanoic acid, decanoic acid, undecanoic acid, or dodecanoic acid into an alkyl diphenyl oxide sulfonic acid reaction product to provide between 5 weight percentage and 50 weight percentage of fatty acid in the admixture.

Description

524716 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the Invention (1) The present invention relates to surfactant materials and compositions and a method for preparing concentrated intermediate products with good processing properties. Rheological behavior is an important consideration in liquids. Proper viscosity in the liquid product enables it to (a) be consumed by the recipient, or (b) conveniently received in the conditioning system to further adjust the viscosity to a useful application value. The usability of the components used in the liquid blend is also affected by the viscosity; and in this respect, the highly concentrated alkyl diphenyl oxide sulfonic acid at the time of preparation has a relatively high liquid viscosity. The DOWFAX ™ surfactant (DOWFAX is a trade name of The Dow Chemical Company) is a good example of a product derived from an alkyl diphenyl oxide sulfonic acid. Highly concentrated alkyl diphenyl oxide sulfonic acid has a solids concentration of 60% to 95% and is referred to herein as a highly active acid or HAA. Although in some HAAs the high viscosity can be improved to an acceptable level by dilution, other HAAs (e.g., DOWFAX Detergent Acid) have been shown to have distinct liquid crystal regions in the solids range of 50% to 80%. The liquid crystal region is characterized by a very high viscosity (greater than 1,000,000 centipoise), so the material is too viscous at temperatures below 40 ° C for easy handling. When the material is heated to make the viscosity acceptable, the material is unfortunately too hot for safe handling outside these blending environments to optimize safe operation at these temperatures. As shown previously, DOWFAX surfactants are good examples of products derived from alkyl diphenyl oxide sulfonic acids. DOWFAX surfactants have a diionic charge per molecule. Each molecule is composed of one pair of sulfate groups on the diphenyl oxide backbone. This double charge density is responsible for the excellent dissolution and coupling of this molecular family. DOWFAX surfactant has excellent solubility and stability in concentrated electrolytes, and can resist oxidation. The paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) 4 (Please read the precautions on the back first) (Fill in this page)

524716 A7 r ——____________ B7 V. Description of the invention (2) and thermal degradation. DOWFAX surfactants have linear or branched alkyl hydrophobes consisting of 6 to 16 carbon atoms (depending on the specific surfactant). Examples of DOWFAX surfactants are used in fabric dyeing, polymer emulsification, agrochemical preparation, and (as an additive) cleaning fluid configuration. It is sometimes desirable to sell highly active acids as a concentrated product for the composition prior to neutralization in order to reduce the shipping and handling costs of the water component of the surfactant product; however, (a) add water at room temperature to 11 8.8 has not traditionally been convenient due to the high viscosity of HAA at room temperature, and (b) most consumers of surfactant products do not conveniently obtain a blended environment that safely handles hot HAA. Therefore, the benefits of efficient shipping and handling and the safety of HAA that can be blended with water at room temperature have not been understood. The desired one is ΗAA, which has a useful viscosity at room temperature, and can be added to water. The present invention solves this problem by providing a H A A composition and a method of the composition, so that HAA having a relatively low viscosity at room temperature is provided. The room temperature viscosity of the alkyl diphenyl oxide sulfonic acid blend is according to the present invention by mixing fatty acids having a carboxyl chain length between 1 and 12 into the alkyl-based oxide lutein acid blend. It is advantageously controlled by providing fatty acids between 5% and 50% by weight in the mixture. In more detail, the preferred embodiment is as follows: A method for controlling viscosity in 1-alkyldiphenyl oxide dicarboxylic acid, which is characterized by the following steps: Fatty acids are mixed into the alkyl diphenyl oxide-continuous acid blend to provide 5% by weight and 50 weights in the mixture. This paper is sized for China National Standard (CNS) A4 (210 X 297 mm) (Please read the back Please fill in this page again for attention) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 524716

A7 B7 5. Description of the invention (3) The amount of fatty acids between%. 2-—A method for preparing an alkyl diphenyl oxide sulfonic acid blend, which is characterized by the following steps: mixing formic acid, acetic acid, propionic acid, butyric acid, valeric acid, hexanoic acid, heptanoic acid, caprylic acid, nonyl Acid, capric acid, undecanoic acid, or dodecanoic acid to provide fatty acids between 5% and 50% by weight in a mixture of alkyl diphenyl oxides having the following characteristics, and (Please read the (Please fill in this page again)

Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs where R is an alkyl group having 6 to 16 carbons; and the mixture is sulfonated with a sulfonating reagent. 3- An aliphatic alkyl diphenyl oxide sulfonic acid blend having a chain length between 1 and 12 between 5 and 50% by weight. 4- A mixed composition as follows: formic acid, acetic acid, propionic acid, butyric acid, valeric acid, hexanoic acid, heptanoic acid, octanoic acid, nonanoic acid, capric acid, undecanoic acid, or dodecanoic acid for mixing Provide fatty acids between 5% and 50% by weight; alkyl diphenyl oxide, which is characterized by

Order · -line · 6 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 524716

5. Description of the invention (4) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, where R is a carbon-based base with between 6 and 16. The red chart is not. The first chart shows the impact of various caprylic acid contents on the viscosity of dowfax alkyl diphenyl oxide sulfonate surfactant blends. Figure 2 shows the impact of various caprylic acid contents on the viscosity of the DOFAX alkyl diphenyl oxide sulfonic acid surfactant blend in the high viscosity range. Figure 3 shows the comparison of the impact of ethyl fatty acid, pentyl fatty acid, octyl fatty acid, and decano fatty acid on the viscosity of DOWFAX alkyl diphenyl oxide sulfonate surfactant blends. The third figure shows a three-phase diagram, which shows a significant liquid crystal phase region of water, DOWFAX detergent acid and fatty acid (acetic acid and caprylic acid). In a further discussion of the preferred embodiment in detail, the alkyl diphenyl oxide sulfonic acid surfactant is an olefin using A1C13 as a catalyst and a Friedel-Kraft diphenyl oxide as shown in Chemical Formula I Product of Friedel-Crafts reaction.

Chemical formula I

The diphenyl oxide is present in excess and is recycled. The reaction produces a mixture of monoalkyldiphenyl oxide and dialkyldiphenyl oxide. The ratio of monoalkylation to dialkylation can be optimized depending on the final use of the product. The next step in this method is the reaction of an alkylate with a sulfonating reagent. This reaction (chemical formula II) is used to dilute the reactants and as the paper size used in the reaction, the Chinese National Standard (CNS) A4 specification (210 X 297 mm) is applied (please read the precautions on the back before filling in this page)

524716 A7 B7

Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs

SO3 in a solvent of diluent. Chemical formula II

This reaction generally produces a mixture of monosulfonic acid salts and disulfonic acid salts according to formula III-VI. The degree of disulfonation is determined by the final use of the product. Generally, the degree of disulfonation is higher than 80%. The main components in the commercial reaction mixture are the monoalkyl diphenyl oxide disulfonate (MADS) of chemical formula IV, and the monoalkyl diphenyl oxide monosulfonate (MAMS), chemical formula V The bis-alkyl diphenyl oxide monobasic acid salts (dams) and the bis-alkyl diphenyl oxide monobasic acid salts (dads) of Chemical Formula VI basically provide the remaining amount.

Chemical formula III

This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page)

V. Description of the invention (6) so3h

Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 524716 A7 _______ B7

Chemical formula IV

so3h so3h

Chemical formula V and

Chemical formula VI so3h

so3h 5 alkyldiphenyl oxide sulfonate and its traditional method of preparation are known and referenced to describe the present invention. Representative methods of preparation and processing are disclosed in U.S. Patent Nos. 2,990,375; 3,264,242; 3,634,272; 3,945,437 and 5,015,367. Commercially available species are mainly (greater than 85%) disulfonates (DADS and MADS as described above), and mixtures of mono- and di-alkynyl groups, and two:!: Endylization (DADS and DAMS as described above) ) The percentage is 5 to 25%, and the percentage of monoalkylation (MAMS and MADS mentioned above) is 75 to 95%. Most typically, commercially available species are 85% monoalkyl and 15% dialkyl.

The traditional method taught by Steinhauer et al. Outlines a series of steps. The first step involves the use of olefins or alkene compounds (such as, three, etc.) in the presence of Friedel-Krafts catalysts due to temperatures between 50 ° C and 100 ° C. Propylene, tetra-propylene, penta-propylene or dodecyl bromide) reacted with diphenyl ether to produce paper. The paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before reading) Fill out this page}

9 524716 A7

V. Description of the invention (7) Alkyl diphenyl ether is printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. The reaction mixture was washed with water to remove the catalyst and the phases were separated. The organic-rich phase is distilled to obtain a fraction which consists of a mixture of mono-alkylated diphenyl ether and di-alkylated diphenyl ether. The number of alkyl substituents per diphenyl ether molecule can be controlled by adjusting the relative proportions of the reactants. In addition, distillation can be performed to separate monoalkylated and dialkylated diphenyl ethers from each other and from lower or higher boiling components, followed by monoalkylated and dialkylated bis The phenyl ether fractions can be mixed in a desired ratio. The mixture of mono- and di-alkylated diphenyl groups is then reacted with a continuation reagent (such as chlorosulfonic acid, sulfonic acid, and sulfur trioxide) in an inert solvent. The general method today refers to the use of unsaturated hydrocarbons (such as alpha-olefins in the 6 to 16 carbon range) with diphenyl oxides in the presence of Alcl3. Alpha-olefins with a higher range of 18-30 carbon atoms react with diphenyl oxides in the presence of A1C13 to maintain certain promises for future surfactant demand. The ratio of monoalkylation to dialkylation is controlled by the ratio of olefin to diphenyl oxide. The recycled excess of diphenyl oxide is purified and reused. The reaction rate and yield are controlled by the catalyst content and the alkylation temperature. Excessive temperatures and excess catalyst result in a higher degree of dialkylation and trialkylation. Low temperatures cause low conversion of olefins. The ratio of concentration, catalysis, and temperature is important to keep the reaction products consistent throughout the production week. The catalyst was removed from the treatment fluid and the crude reaction mixture was stripped of excess diphenyl oxide. The other purifications are selectively applied before the sulfonation reaction. Sulfonation is usually done in a solvent. The solvent provides the value of distributing sulfonation test, avoiding localized combustion and loss of reaction product yield, and serves as a control counter (please read the notes on the back before filling this page)

524716 V. Description of the invention (printed by A7 B7, Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs, heat removal medium f. The current commercial processing path uses sulfur dioxide, digas, or air as the reaction solvent. Air sulfonation The method removes the need to remove and circulate the liquid reaction solvent, and is used to generate on-site. The liquid solvent needs to use liquid S03, which is diluted in the solvent before adding to the sulfonation reactor. Sulfur trioxide and chlorine continued The acid is the two most continuous reagents. After ~ 1, the sulfonic acid is separated from its diluent, (2) the anhydrous acid (HAA) is diluted with water, and (3) the diluted acid The reaction is selectively carried out with an alkali metal base such as sodium hydroxide. The materials are packaged and sold in drum or block according to consumer demand. The high viscosity of / shrinkage HAA is due to the properties related to the existence of liquid crystals Derived. This effect starts at a hydrophobe chain length of less than 6 and is gradually significant in observation samples up to 16 chain lengths, and is expected to expand more significantly, such as via 18-30 carbon atoms. High range Hydrocarbon reacts with diphenyl oxide in consideration of the situation. Therefore, the liquid crystal destroying agent or crystal structure destroying agent is twice expected to make the useful viscosity in the useful solid state range (ie, the solid range of 60-95%). Additives. With regard to this matter, the additional components in the blend are the most desirable, which destroy the liquid crystal structure of the highly active acid (HAA) and do not impart undesired properties to the formed blend. Regarding this matter, two Methylformamide (DMF) and methylformamide (MF) can effectively destroy the liquid crystal structure in the alkyl diphenyl oxide sulfonic acid blend used to derive DOWFAX surfactants; Use is unfavorable due to claimed health considerations. Fatty acids (such as caprylic acid or lauric acid) have been found to be added to the high concentration world (please read the precautions on the back before filling this page)

524716

V. Description of the invention (9) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economics Surfactant Sodium Acid can greatly reduce the viscosity of the ®, antiseptic and improve the operating characteristics of HAA. Using this additive-shaped 忐 —J Xiaocheng special 疋 blend can prepare and use these surfactants in concentrated acid form. In other implementations, mixing ribic acid with calcined diphenyl oxide before charging also provides reduced surfactant viscosity and improved operating characteristics of haa materials. Formic acid, acetic acid, propionic acid, butyric acid, valeric acid, hexanoic acid, heptanoic acid, octanoic acid, nonanoic acid, capric acid, undecanoic acid, or dodecanoic acid (lauric acid) all provide the advantages of low viscosity HAA compositions to The sample data in the examples and diagrams are used as references for further description. Example 1: A sample containing a linear carboxylic acid from formic acid to lauric acid and a representative alkyl diphenyl oxide sulfonic acid surfactant with a 16 carbon hydrophobic side chain (DOWFAX detergent acid, 94 weight浓度 / 〇 concentration) is blended in an amount of 重量% by weight of carboxylic acid based on the dowFAX content. The viscosity of these samples is at 4 (rc measurement 'results are shown in Table 1. Brookfield Programmable Rheometer (HDAV-III) is used to measure the viscosity of DOWFAX acid samples. The size of the spindle used is sc ping 21. The viscosity of the sample is measured at 40 ° C. The temperature of the Thermosel temperature console is stable. About 8 liters of sample is placed in the rheometer chamber. The keys are inserted into the chamber so that the sample covers the spindle 1/8 inch of the shaft. The chamber is placed on a temperature console and the spindle system is connected to the rheometer. The rheometer system is automatically zeroed. Start stirring at 1 RPM and allow the sample temperature to equilibrate for 10 minutes. At 1 〇 After this minute, the paper size will be in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) 12 (Please read the precautions on the back before filling this page)

524716 A7 B7 5. Description of the invention (10), the motor is stopped, the sample is allowed to stand for 5 minutes, and then the motor is started again. Take a reading after 5 spins of the spindle. Agitation is increased and the torque is recorded until the permissible torque on the instrument is exceeded. The following equation is used to convert the torque into viscosity (units cP): Viscosity = 100 / RPM * TK * SMC * Torque torque constant (TK) = 2 Spindle complex constant (SMC) = 5 Table 1 Structure-Viscosity Modification Properties of Weic Acid Additive in DO WFAX Detergent Surfactant [9.1% by weight carboxylic acid, 85.5% by weight 2 DOWFAX Detergent, 5.4% by weight water] (Please read the precautions on the back before filling in this Page) Printed carboxylic acid viscosity, cP Common name (system name) (at 40.8 ° C) Formic acid (formic acid) 7030 Acetic acid (acetic acid) 5847 Propionic acid (propionic acid) 4965 Butyric acid (butyric acid) 5227 Valeric acid (valeric acid) 4970 Capric acid (hexanoic acid) 6333 Heptanoic acid (heptanoic acid) 6290 Capric acid (caprylic acid) 9360 Pelargoic acid (nonanoic acid) 9120 Capric acid (capric acid) 15820 Lauric acid (twelve) Carbonic acid) 18040 13 This paper size is applicable to Chinese National Standard (CNS) A4 specifications (210 X 297 mm). Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 524716 A7 ---------- B7 Invention Description ( U) Example 2: Contains various concentrations (based on DOWFAX acid content 2 to 50% by weight) of representative carboxylic acid (octanoic acid) samples at various aqueous dilutions (44 to 94% by weight / gD0WFAx acid) and representative alkyl groups with 1 carbon carbon hydrophobe side chains Phenyl oxide sulfonic acid surfactant (DOWFAX detergent acid, or DD-HAA in Figures 1 and 2) is blended. Each sample was blended until homogenization. The viscosity of these samples was measured at 4 (rc using the method shown in Example 1. The results of these 4 measurements are shown in Figures 1 and 2. Some samples (a) exhibited a very high viscosity liquid crystal behavior and (b) consistency Becomes solid. These samples typically exhibit a viscosity (1,000, 000, cp) that exceeds the measurement limit on the rheometer, and these samples are shown in the figure with

Viscosity of 1,000,000 cP. The behavior of DOWFAX cleaner acid without carboxylic acid ("0% by weight 0A,") is shown in the figure for comparison. The liquid crystal phase in figure 1 starts at 69/90 to 90 / 〇In the solid range (depending on the concentration of special octanoic acid), the viscosity rises rapidly with the decrease of the solid. The liquid crystal phase is significantly suppressed only at 30% by weight of octanoic acid. Example 3: Contains various concentrations (2 to 30%) / 〇) of each of the four representative carboxylic acids (acetic acid, valeric acid, caprylic acid and capric acid) samples are each a representative alkyl diphenyl oxide sulfonic acid with a 16-carbon hydrophobe side chain Active agent (DOWFAX detergent acid, 94% by weight) was blended. Each sample was blended to homogenize. The viscosity of these samples was measured at 40 ° C by the method shown in Example 1. The results of these measurements are as follows Shown in Figure 3. The behavior of dowfax cleaner acid without carboxylic acid (in the figure, 0% by weight additive concentration,) is shown as the paper size applicable to the Chinese National Standard (CNS) A4 specification ( 210 X 297 mm) (Please read the notes on the back before filling this page) Order --- --- 14 524716 A7 _ B7 V. Description of the invention (12) For comparison. The information of all acids with a concentration higher than 〇 / 〇 in Figure 3 compared with the case of 〇 / 〇 helps to further illustrate the fatty acids. The effect of the general viscosity reduction of HAA (such as the DOWFAX detergent acid tested). The data in Figure 3 indicate that the fatty acid chain length at the concentration of 5% by weight fatty acid is more significant for the viscosity reduction. Example 4: Contains various Samples of acetic or octanoic acid (as representative carboxylic acids), representative alkyl diphenyl oxide continued acid surfactants (DOWFAX detergent acids), and water with a 16-carbon hydrophobe side chain were prepared in proportions. Each A sample is blended until homogenization. The visual inspection of the gloss of each sample is used to identify the existence of a solid-state liquid crystal phase. The information defining the composition of the sample exhibiting this high viscosity phase is plotted on a three-phase diagram to Confirm the phase boundary. The boundary region with the blend of acetic acid or caprylic acid is shown in Figure 4. The three-phase diagram of Figure 4 shows the significant liquid crystal phases of water, DOWFAX surfactants, and difatty acids (acetic acid and caprylic acid). The phase boundary is indicated, during which the viscosity is measured at room temperature and room pressure to 1 million centipoise or greater. The high viscosity region emphasizes the interfacial activity at the mixed alkyl diphenyl oxide sulfonic acid according to the embodiment of the present invention The importance of adding water to fats and fat blends. Note that the successful mixing of HAA and water requires attention to the concentration of the components controlled according to the phase described in Figure 4. In this regard, in the production and sale of When using high shrinkage HAA in the surfactant, the alkyl diphenyl oxide sulfonate surfactant / fatty acid mixture needs to be added to the water; when using the high shrinkage HAA in producing and selling the surfactant, the water does not Should be added to the alkyldiphenyl oxide sulfonic acid surfactant / fatty acid mixture. About this point, this paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling out this page) Preparation 15 524716 A7 B7 5. Description of the invention (13), referring to Figure 4, the addition of water to the alkyl diphenyl oxide sulfonate surfactant / fatty acid mixture will induce the formation of actual liquid crystals in the mixture, and when the mixture is used Too viscous because diluting HAA with water results in entering the liquid crystal region. Example 5: Caprylic acid at a concentration of 10% by weight based on the expected content of DOWFAX detergent acid is added to the alkylate during the sulfonation reaction. A comparative reaction without octanoic acid under the same conditions produces a DOWFAX detergent acid exhibiting a viscosity of 40,200 cP. The sulfonation reaction product containing 10% by weight caprylic acid had a viscosity of 3,100 cP. The favorable results obtained using fatty acids in the described examples indicate that fatty alcohols, fatty amines or linear alkanes having a C6-C18 range demonstrate the considerations and experimental studies of the blends of the examples in question. Brief Description of the Drawings Figure 1 shows the impact of various caprylic acid contents on the viscosity of DOWFAX alkyl diphenyl oxide sulfonate surfactant blends. Figure 2 shows the impact of various octanoic acid contents on the viscosity of DOWFAX alkyl-diphenyl oxide surfactant blends in the high viscosity range. Figure 3 shows the comparison of the impact of ethyl fatty acid, pentyl fatty acid, octyl fatty acid, and decyl fatty acid on the viscosity of DOWFAX alkyl dibenzyl oxide sulfonic acid surfactant blends. Figure 4 is a three-phase diagram showing the significant liquid crystal phase region of water, DOWFAX surfactants, and difatty acids (acetic acid and caprylic acid). This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) ------------------- pan ------------- ---- 、 Can ------------------ line. (Please read the notes on the back before filling this page) 16

Claims (1)

524716 ___--------- AB c D Announcement VI. Application for Patent Scope No. 89113966 Patent Application Application for Amendment of Patent Scope Amendment September 12, '91 1. An alkyl diphenyl oxide sulfonic acid The viscosity control method is characterized by the following steps: A fatty acid having a carboxyl chain length between 1 and 12 is mixed into the alkyl diphenyl oxide sulfonic acid blend to provide 5% by weight and 50% in the mixture. Fatty acid between wt%. 2. A method for preparing an alkyl diphenyl oxide sulfonic acid blend, which is characterized by the following steps: making acetic acid, acetic acid, propionic acid, butyric acid, valeric acid, hexanoic acid, heptanoic acid, octanoic acid, Nonanoic acid, capric acid, undecanoic acid, or dodecanoic acid is mixed with an alkyl diphenyl oxide to provide a fatty acid between 5% and 50% by weight in the mixture. The alkyldiphenyl oxide is characterized by : Wherein R is an alkyl group having 6 to 16 carbons; and the mixture is sulfonated with a sulfonating agent. 3. The method according to item 2 of the patent application, wherein at least two of the fatty acids are mixed with the alkyldiphenyl oxide blend in the mixing step. 4. A method for preparing an alkyl diphenyl oxide sulfonic acid blend, which is characterized by the following steps: formic acid, acetic acid, propionic acid, butyric acid, valeric acid, hexanoic acid, heptanoic acid, caprylic acid, nonanoic acid , Decanoic acid, undecanoic acid or dodecanoic acid and alkyl diphenyl This paper is sized to the Chinese National Standard (CNS) A4 (210χ297 public love) 17 The gaseous sulfonic acid blend is mixed to provide fatty acids between 5% and 50% of the weight of the mixture in the mixture. Wherein R is an alkyl group having 6 to 16 carbons. 5. The method according to item 4 of the patent application, wherein at least two of the fatty acids are fully compounded with the diphenyl oxide acid-acid conversion compound in the mixing step. 6. The method according to item 4 or 5 of the scope of patent application, wherein the compound of the diphenyl oxide sulfonic acid before the fatty acid is characterized by: between 5 and 25% by weight (CNS) A4 Regulations ^ 18 524716 A B c D 6. Scope of patent application so3h And and R -〇 so3h so3h; and more than 85% by weight And 7. The method of claim 2 or 3, wherein the alkyl diphenyl oxide blend before mixing the fatty acid is: wherein: 5 to 25% by weight This paper size applies to Chinese National Standard (CNS) A4 (210X297 mm) 19 524716 A B c D 6. Scope of patent application 8 to 8 kinds of alkyl dibenzyl oxide sulfonic acid blends with individual weight percentages between 75 and 95, having fatty acids having carboxyl chain lengths between 1 and 12 between 5% and 50% by weight. 9 · A mixed composition comprising: formic acid, acetic acid, propionic acid, butyric acid, valeric acid, hexanoic acid, heptanoic acid, octanoic acid, nonanoic acid, capric acid, undecanoic acid, or dodecanoic acid, which are based on the mixed composition Provide fatty acids between 5% and 50% by weight; and alkyl diphenyl oxide, which is characterized by: Wherein R is an alkyl group having 6 to 16 carbon atoms. 10. The mixed composition according to item 9 of the patent application scope, which has at least two such fatty acids. 11. · An alkyl diphenyl oxide sulfonic acid blend, characterized by: osmic acid, acetic acid, propionic acid, butyric acid, valeric acid, hexanoic acid, heptanoic acid, caprylic acid, nonanoic acid, capric acid, eleven Carbonic acid or dodecanoic acid ', which provides fatty acids between 5% and 50% by weight in the blend; and alkyl diphenyl oxide sulfonic acid, which is characterized in that: the paper size applies to Chinese national standards ( CNS) A4 size (210X297 mm) 20 24 Η Η 3 ο s so3h, and so3h wherein R is an alkyl group having 6 to 16 carbon atoms. 12. A blend according to item U of the application, which has at least two such fatty acids. 13. The blend according to item 11 or 12 of the scope of patent application, wherein the alkyl diphenyl oxide sulfonic acid blend without considering the weight of the fatty acid is among 5 to 25% by weight. And this paper size applies to Zhongguanjia Standard (CNS) A4 specification (210X297 public director) 21 524716 A8 B8 524716 AB c D 6. Scope of patent application: Octanoic acid, nonanoic acid, capric acid, undecanoic acid or dodecanoic acid are mixed with alkyl diphenyl oxide to provide fatty acids between 5% and 50% by weight in the mixture. The alkyl diphenyl oxide is characterized by: Wherein R is an alkyl group having 6 to 16 carbons; the mixture is continued with a petrified reagent; the sulfonated mixture is blended in water; and the water and the sulfonated mixture are mixed. The blend is neutralized. 16. A method of preparing a surfactant, characterized by the following steps: formic acid, acetic acid, propionic acid, butyric acid, valeric acid, hexanoic acid, heptanoic acid, caprylic acid, nonanoic acid, capric acid, undecanoic acid, or Dodecanoic acid is blended with an alkyl diphenyl oxide dibasic acid blend to provide a fatty acid between 5% and 50% by weight in the mixture. Characteristics of the alkyl diphenyl oxide sulfonic acid blend Lies in: so3h between 5 and 25% by weight This paper size applies to A4 size (210X297 male " 57 23 524716 A B c D patent application range between 75 and 95 individual weight% -〇 so3h and so3h so3h; and more than 85% by weight And blending the sulfonated mixture in water; and neutralizing the water and sulfonated mixture; wherein R is an alkyl group having 6 to 16 carbons. This paper size applies to China National Standard (CNS) A4 (210X297 mm) 24