SU1227624A1 - Method of producing emulsifying agent for liquoring leather - Google Patents

Description

I

The invention relates to methods for obtaining sulfonated fats, which can be used in leather and fur as anionic emulsifiers for skin and fur.

The purpose of the invention is to improve the quality of the target product.

The method is carried out as follows.

A steel enameled apparatus with a root mixer with a stirring speed of 45 rpm and a water-cooled head with a cooling capacity of 6.3 m is loaded with raw fish oil, previously cleaned, and cooled down to 22t2 ° C. 7-8% urea by weight of fat is added to the fat mass. Then from the mernik slowly pour sulfuric acid concentration 99i: 0.5% in the amount of 23-25% by weight of fat. Sulfuric acid is poured in 18-20 hours, after that, so that the temperature of the reaction mass does not exceed 33 C; since at a higher temperature, hydrolysis of the resulting sulpho-fat occurs and its quality deteriorates.

Then the mass is stirred for another 2-2.5 hours at a temperature not higher than 33 ° C, water is poured into it at 35-40 ° C in an amount of 100-120% for washing from sulfuric acid, aluminum sulfate is added in an amount of 2.0- 3.0% of the mass of the original fat and rotate the stirrer for 1-1.5 hours. Next, sulphate is sludge from acidic water. After draining the acidic water from the apparatus, the process of neutralization begins.

With stirring, a solution of sodium hydroxide with a concentration of 42–43% in the amount of 2.0–2.0, 5% of the mass of the initial fat (in terms of 100%) to a pH of 2.5–3.0 is slowly poured in with stirring.

 When neutralizing, the temperature of the reaction mass is 70–75 ° C. After the preliminary neutralization, the reaction mass is left to stand for 2-3 hours and the sulphate water is drained. Then, 42-43% sodium hydroxide solution is added slowly (to avoid the fumigation of the fat-fat) to the sulfurator to a pH of 6-7.5.

The finished product is poured into containers, metal barrels or railway tanks.

276242

Example 1. The initial fish oil, obtained from the Far Eastern fishery and previously purified, was loaded into the reactor in an amount of J 2200 kg and cooled to 22 ° C. 7% of urea by weight of the original fat was added to the fat mass. Then, from the mernik, sulfuric acid with a concentration of 99.5% was added slowly in the amount of 23% tQi based on the weight of the original fat in terms of 100%. Sulfuric acid is poured over 8 hours, with

15

20

25

thirty

35

40

45

50

55

THIS reaction temperature did not exceed 30 ° C. After finishing the tide of sulfuric acid and 2-hour stirring, the sulphomass was washed from sulfuric acid by adding warm water (37 ° C) in an amount of 120% and aluminum sulphate in an amount of 2, 0% by weight of the initial raw materials. Metalku metal for 30 minutes. Then sulfomass sediment from sour water was conducted, it was drained and the neutralization process started. Sludge from sulphate water was carried out for 2 hours.

Example 2. The initial fish oil obtained from the Baltic fish industry, previously purified, loaded the reactor in the amount of 2200 kg and cooled to 22 ° C. Add to the mass of fat

7.5% urea by weight of the original fat. Then, from the measuring device, sulfuric acid with a concentration of 99% in the amount of 24% was calculated as 100%. The process of sulfonation and acid stripping was carried out analogously to example 1, adding 2.5% aluminum sulphate. After neutralization, sulphate sludge water was carried out for 2.5 h.

Example 3. Source fish; the fish obtained from the Severomorsk fishery, was treated similarly to example 1, but sulfonation was performed with 98.5% sulfuric acid at a rate of 25% by weight of the initial fat (calculated as 100%) in the presence of 8% urea. Washing was carried out in the presence of 3% aluminum sulphate and sulphate sludge was carried out for 3 hours.

Example 4. The original fish. the fat obtained from the Black Sea fish-for-sales was treated similarly to example 1, but sulfirovapium was carried out at a consumption of sulfuric acid of 22% of the mass of the initial fat (in terms of 100%) in the presence of 6.5% mo3

Chevina. The washing was carried out in the presence of 1.8% aluminum sulphate, and sulphate sludge water was conducted for 1.5 hours.

Example 5. Source fish oil, obtained from the Azov fish, was treated similarly to example 1, but sulfonation was carried out at a consumption of sulfuric acid of 26% of the weight of the source fat (in terms of 100%) in the presence of 8.5% macauvine . The washing was carried out in the presence of 3.5% aluminum sulphate, and the sludge - for 3.5 hours.

In Examples 1-3, a high grade emulsifier was obtained, with a high content of total fat and a low content of undesirable sodium sulfate impurity. Its consistency made it easy to drain into and out of t & n.

Appearance

Light brown to brown oily mass

Content of total fat not less,%

The content of sulfuric acid bound by organic compounds, in terms of SOg, not less than,%

Stability of 5% water emulsion, h

Bo-Bo-More than 2 more than 2 more than 2 1.5

70.5 72.3 72.1 63.2 70.1 60

60

4.14 4.30 4.36 2.1 4.0 2.5 2.0

More than 2 2

6.3

6.5 6.5

276244

Table 1 shows the physico-chemical characteristics of the finished product.

The resulting emulsifier was tested in the following grease formulations. leather, are given in table.2.

Table 3 shows the results of the physicomechanical and chemical parameters of the finished leather, zhiryzhannyh with Q using the emulsifier obtained and proposed by the method.

Using the proposed method allows to obtain an emulsifier

and for fattening leathers, which produce high-quality leathers for shoe upper and reducing wastewater pollution with sulfuric acid. In addition, the resulting emulsifier can be used to fatten all types of leather and fur.

Table I

Pasty mass from light brown to dark brown

60

More than 2 2

6.5 6.7 6

7.3

From cream to light yellow (formation of a transparent emulsion is possible)

ve

2.5

0.23

2.5

1.2

2.5

0.9

Components

Content in composition,% of fat mass

Synthetic fat

Experienced emulsifier (highly sulfonated fish oil)

Sulfonated

fish fat

(TU 6-01-868-79)

Spun butter

Non-ionic surfactant

Continued table.

From light yellow to light brown color (formation of a transparent emulsion is possible)

2.5

2.5

3.5

5.5

8.6

7.3

2.0

2.0

table 2

70

50

50

thirty

thirty

20

30 20

3-5

m

R

H

1.3310 1.41-10 1.1.

2.74

2.34

34

167

2.83

2.28

33

183

3.02 2, 44 3

181

Editor A. Ogar

Compiled by T. Vlasov

Tehred I. Veres Proofreader A. T sko

Order 2259/25 Circulation 379Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Table 3,

1.36-.10

3.02 2, 44 3

181

2.76

1.81

35

209

Claims (1)

METHOD FOR PRODUCING AN EMULGATOR FOR SKIN FATIGATION, including sulfonation of fish oil with concentrated sulfuric acid, washing, sludge and drainage of acidic water, neutralization with alkali, sludge and drainage of sulfate water, characterized in that, in order to improve the quality of the target product, sulfonation with sulfuric acid is carried out in an amount 23-25% by weight of the starting fat calculated as 100% acid in the presence of urea in the amount of 7-8% by weight of the starting fat; washing is carried out in the presence of aluminum sulfate in the amount of 2-3% by weight of the starting fat Iraq, and sediment of acidic and sulfate water is carried out for 2-3 hours. SU,.,. 1227624