RU1524443C - Method for preparing base component of fatty agent for leather and fur processing - Google Patents

Description

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(21) 4261323/04 (22) 120687 (46) 11/30/93 Bump N643-44

(71) Tselkovsky Experimental Plant of the All-Union Scientific and Research Institute of Chemical Plant Protection Chemicals

(72) Velska LA: Korobko TA; Soloents VA; Antencea FA Maltsev L.S .; BA Tsdin EV, - Zhivova Z.K .: Klenovska NY

(54) METHOD FOR OBTAINING A BASIC COMPONENT OF A FATFUL PRODUCT FOR PROCESSING SKIN AND FUR (57) The invention allows to improve the quality of the target product and reduce its worth. The process is carried out by oxidation of natural fats with air in the presence of a catalyst - Co or Mn salts of polyunsaturated fatty acids C-C and

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5-20 wt% protein waste from the production of sulfonated fish oil and marine animal fats. Then, the oxidate is sulfonated with sodium bisulfite when heated in the presence of a neonogenic emulsifier. The resulting product is an emulsion with a dispersion of 121 microns, pH 5%. emulsions 7, 5, stability of a 1% emulsion to ultrolites 6 hours against 2.5 microns, pH 4 - 5.2 hours in the known case. Tests of these substances in fatliquoring compositions (fat (component 59 - 62%; deodorizing additives: terpeniol 0.1 - 1%, citrate 0.5%; mineral oil - up to 100%) showed that the skin has a higher margin for tensile (2.74 - 3.02) MPa, versus 2.13 MPa), higher stresses are generated until cracks appear on the front side (2.34 - 2.89 MPa versus 1.95 MPa). have less stiffness (0.18 - 0.29 N, versus 0.35 N), while the skin is xopoujo and evenly impregnated in all three layers of Ztabl.

The invention relates to a method for producing surfactants based on oxidized and sulfonated natural fat and can be used in the treatment of leather and fur.

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

Natural fats are oxidized in the presence of 5-20 wt.% Protein waste from the production of sulfonated fish oil and marine animal fat, followed by sulfonation with sodium bisulfite.

PRI me R 1 (comparative). 100 g of fish oil is placed in a container equipped with a steam jacket and incubated for 4 hours at 85-95 ° C. The resulting lower layer is separated from the dehydrated fish oil. The fat is subjected to oxygen oxidation of the air supplied under the fat layer in the presence of a catalyst — cobalt salts of Cg-Sgb grade C polyunsaturated fatty acids (STP 113-04-05-65-84). The catalyst was taken in an amount of 0.05 g, or 0.001%, in terms of Co. The mixture was stirred for 3 hours, then an OP-10 emulsifier was added in an amount of 4% and an aqueous solution of sodium bisulfite (37%) at a ratio of fat: sodium bisulfite of 1: 1. Sulfonation is carried out at 93 ° C until a sulfonated product is obtained with an emulsion fineness of 2.5 microns. Characterization of the obtained product: pH of 5% emulsion 4-5, resistance of 1% emulsion to, electrolytes less than 2 hours.

Example 6 2.100 g of marine animal fat was dehydrated as in Example 1. The resulting lower layer containing protein waste was separated from the main fat. 70 g dehydrated fat is sent to the oxidation step, and protein waste in an amount of 3.5 g or 5% is added thereto.

Under the layer of the resulting mixture, air oxygen was added in the presence of the catalyst from Example 1, in an amount of 0.001%, calculated on the basis of cobalt. The mixture was stirred for 2 hours, after which a 2% OP-10 emulsifier and a 37% sodium bisulfite solution were added in a ratio of 1: 0.35. Sulfonation is carried out at 70-85 ° C until a sulfonated product is obtained with an emulsion fineness of 1-1.5 microns. Characteristics of the obtained product: pH of a 5% emulsion of 7.5, the stability of a 5% aqueous emulsion of 4.5 hours, the stability of a 1% emulsion to electrolytes of 6 hours

Examples 3-6 are performed analogously to example 2.

The results obtained are summarized in table 1.

Table 2 shows the compositions of the samples of leather oil.

Prototypes of tanning oil were tested on a prefabricated chrome tanning product during the fattening process. Experienced leathers are fattened with leather oil at its consumption of 8% by weight of planed leathers (for the composition, see Table 2).

The control halves are fattened with the composition (wt.%) Obtained at the Schelkovo pilot plant: sulfonated fish oil 80; cobalt salt of a mixture of polyunsaturated fatty acids C20-C26 3: OP-7 5: spindle oil 12.

As a result, in all three variants of experimental fattening, the skin was soft, full, full to the touch, not scented. According to the physicomechanical and chemical parameters, the finished leather meets the requirements of TU 17-06-113-85.

The results are shown in table.3.

The skin treated with this composition was soft, full, full to the touch, not perfumed. The comparison is carried out with the composition obtained by the prototype method.

So, for example, leathers treated with the composition according to the proposed method have a higher tensile strength (2.74-3.02 MPa in comparison with 2.13 MPa in the prototype), withstand higher stresses until cracks appear on the front side (2.34-2.89 MPa in comparison with 1.95 MPa in the prototype), softer (have a stiffness of 0.18-0.29 N, less than the prototype - 0.35 N). The skin in all three layers is well and uniformly impregnated, unlike the prototype, in which the average layer of coating agents contains almost half as much as in the front and bakhtarm.

In addition, the use in the production of a component of protein production waste allows you to replace some of the natural fats and reduce the cost of the target product,

(56) Copyright certificate of the USSR N 1460077, cl. C 14 C 9/02, 05/11/85.

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table 2

Table 3

FORMULA AND 3 REVIEWS

METHOD FOR PRODUCING BASIC COMPONENT OF FATTY PRODUCT FOR PROCESSING SKIN AND FUR by oxidizing natural fats with atmospheric oxygen in the presence of cobalt or manganese salt as a catalyst; C20 - i C26 polyunsaturated fatty acids and sulfonation of oxidized mass

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Continuation of the table. 3

sodium bisulfite at elevated temperatures in the presence of a nonionic emulsifier, characterized in that, in order to improve the quality and reduce the cost of the target product, the oxidation is carried out in the presence of 5-20 wt.% protein waste from the production of sulfonated fish oil and marine animal fats.