Liposomal composition for processing leather and fur semi-finished product and the methods of their processing

 

(57) Abstract:

Liposomal composition for processing leather and fur semi-finished products and treatments related to light industry, particularly for leather and fur production. Liposomal composition comprises a phospholipid, swelling in water, a polymer and at least one of the following target compounds: organic tanning agent, dye, flavor, antibacterial drug, repellent, neamblysomus fat at a given ratio of components. The way of processing leather semi-finished product is carried out using the above composition, when the flow rate of 20-50% by weight of semi-finished product at a temperature of 20-28C within 0.75 to 2 hours processing Method fur semi-finished product is also carried out by using the above composition, when the flow rate of 20-50% by weight of semi-finished product at a temperature of 20-30C and volume ratio 5-15 within 0.75 to 2 hours of Processing semi-finished product can be maintained namesnik method. The technical result is to improve the technological properties of the composition by optimizing the quality and quantity of its components, control its viscosity, the temperature decrease aggregate stability, leading to expansion of blaschette for leather and fur production. Offer liposomal composition can be used in combined processes of retanning, fatliquoring, dyeing, filling and will improve the quality of the leather and fur semi-finished product at the expense of a deeper and more uniform distribution of target compounds, while reducing the consumption of chemical materials.

In the technological cycle of production of leather and fur semi-finished products, some processes are sovmesheno to reduce energy, water, labor, and thus to provide the necessary quality of the semifinished product. At the heart of any combination of the aforementioned technological processes it is important that the deeply penetrated into the inner layers of the leather and uniformly distributed on the surface of the accessible structural components of the collagen. To ensure this effect to the processing compositions have special requirements for their aggregate stability and compatibility of components used.

Processing compositions used in the form of aqueous solutions or melts, as well as heterogeneous systems, emulsions, suspensions, foams. The creation of such compositions requires strict adherence to temperature regimes, pH with the introduction in their molecule sulfo or create emulsions by introducing SAS / Esin, F., Sankin L. B. Finish fur. - M.: Lespromizdat, 1994/.

There is a method of manufacture of furs, including pickling, tanning-greasing and aging, combined processes of tanning-fatliquoring exercise namesnik way composition based emulsion of water in oil” containing, g/l: synthetic fat - 135, industrial oil - 135, surfactant - 30, liquid chrome tanning agent with a concentration of 100 g/l 700 ml/L. the Flow rate of 150-250 g/m2(Patent RF №1526231, With 14 1/00).

A method of processing leather, which consists in the simultaneous dyeing, fill, doublepane when liquid ratio of 5, a temperature of 25-30C, pH 6-7 for 1.5-2 h (A. C. of the USSR №417471, With 14 9/00).

A disadvantage of the known technical solution is a limited part of the target additives, the presence of an additional component of surfactant to obtain emulsion and its suitability only for combining processes tanning-fatliquoring.

A method of processing leather prefabricated, includes the combined processes of filling, fatliquoring and hydrophobization processing composition based on 100 wt.h. fat-containing component, 1-1,5 wt.h. sulfuric acid and 10-100 wt.h. poly(organo)silazane. The flow rate of sostave the need for special emulsification of fats by sulfation, i.e. the introduction of a fat molecule polar groups.

The closest analogue to the proposed technical solution is a composition for treatment of semi-finished leather, which is an aqueous emulsion of fats, neutralizing agent and the target substance is a pigment concentrate. The composition contains, in wt.%: the pigment concentrate is 1.5; feeding the mixture - 5-6; neutralizing agent - 1-2; the rest is water. The emulsion obtained by serial dilution of fats, surfactants, pigment concentrate and solution of an alkaline neutralizing agent. The stability of the emulsion 20-30 minutes of Processing semi-finished product is carried out at a temperature of 30-45C, liquid ratio (LC) 0.3 to 1.5 V for 1-1 .5 h (U.S. Pat. OF THE RUSSIAN FEDERATION NO. 1467994, WITH 14 9/00).

The disadvantage of this technical solution is the impossibility of introducing into the processing composition of a wide range of target substances for use when conducting combined processes of leather and fur production.

Known multi-component compositions have insufficient stability, and their constituent components have to enter, as a rule, portions and sequentially in order to avoid the risk of premature interaction between them. And the more the production there is the added complexity of uniform distribution of target compounds in the leather, due to the fact that most of the components of the processing composition penetrates into the thickness of the dermis only from the flesh side. In addition, the presence of hair imposes constraints on the components of the processing composition, which may cause Zairian or uneven coloring of the hair.

The technical task of the invention is to improve the technological properties of composite structures for processing leather and fur semi-finished products by optimizing the qualitative and quantitative compositions and regulation of their viscosity, the temperature decrease their aggregate stability, which leads to an intensification of technological processes of leather and fur production due to their combination, to reduce consumption of chemical materials, the temperature reduction treatments and improve the quality of the semifinished product.

This technical result is achieved by liposomal composition for processing leather and fur semi-finished product includes swelling in water, a polymer, a phospholipid and at least one of the following target compounds: organic tanning agent, dye, flavor, water repellent, antibacterial drug,

Organic tanning agent 2,0-4,0

Dye 0,2-2,0

Flavor 0,01-0,03

Bactericidal drug 0,1-1,0

Repellent 0,05-1,0

Neamblysomus fat 1,0-5,0

Water the Rest

The composition is prepared by introducing, with stirring, in the system of the swollen polymer in water at pH of 4.5 to 8.0 for other purpose additives, components of the composition in a ratio form particles in the form of liposomes. Liposomes possess a lipid envelope that protects their internal structure from the destructive actions of the environment. Target substance, depending on the degree of their affinity to water, include either the inner volume of the liposome, or in the membrane of liposomes, which allows you to share different nature of the target substance. Optimal processing properties of the composition is at a temperature of from +15 to +50C.

As the swelling in water of the polymer used, for example, carbopol, carboxymethylcellulose; as special additives in the composition used, for example, the phospholipid is lecithin, phosphatidylcholine; nemurihime fats castor oil, lanolin, organic tanning agent is an extract of quebracho; dyes acid red, jirgas is hydrated and quantitative composition options liposomal composition.

Liposomal composition is stable in time, retains its technological properties in a wide range of temperatures and pH of the processing environment and allows you to enter into its composition different nature and purpose of the target substance. The proposed composition has an adjustable viscosity that allows you to use it as amanokrom and namesno methods of processing leather and fur semi-finished products.

This technical result is also achieved by a method of processing leather semi-finished product using a liposomal composition containing swelling in water, a polymer, a phospholipid and at least one of the following target compounds: organic tanning agent, dye, flavor, water repellent, antibacterial drug, neamblysomus fat in number, wt.%:

The phospholipid 2,0-7,0

Swelling in water of the polymer 0,4-4,0

Organic tanning agent 2,0-4,0

Dye 0,2-2,0

Flavor 0,01-0,03

Bactericidal drug 0,1-1,0

Repellent 0,05-1,0

Neamblysomus fat 1,0-5,0

Water the Rest

and the treatment is carried out in drums bathing or put method at a temperature of 2 is at is also achieved by a method of processing fur semi-finished product using a liposomal composition, containing swelling in water, a polymer, a phospholipid and at least one of the following target compounds: organic tanning agent, dye, flavor, water repellent, antibacterial drug, neamblysomus fat in number, wt.%:

The phospholipid 2,0-7,0

Swelling in water of the polymer 0,4-4,0

Organic tanning agent 2,0-4,0

Dye 0,2-2,0

Flavor 0,01-0,03

Bactericidal drug 0,1-1,0

Repellent 0,05-1,0

Neamblysomus fat 1,0-5,0

Water the Rest

and the treatment is carried out in drums bathing or put method at a temperature of 20-28C, the flow rate of the composition of 20-50% by weight of cement, over 0.75 to 2 hours Processing fur semi-finished product are oconomy bathing or put method.

The invention consists in that the target substance is enclosed in a phospholipid membrane, easily diffuse into the structure of the hair or skin in concentrated form, without dilution, it involves direct contact of the fibrous substrate with the active centers of the target substances. This reduces the amount of chemical materials on average 5-10 times.

Examples of the complete method.

2temperature 20C. Next are aging within 1 h

As a result of the processing of the combined processes of filling, fatliquoring and antimicrobial treatment. The consumption of fattening substances in comparison with standard technique reduced 7 times, with the resulting intermediate product, chemical properties and physical-mechanical characteristics meet regulatory requirements.

Example 2.

Semi-finished leather after tanning process liposomal composition, a composition for option 2, the flow rate of the composition is 50% by weight of cement, the LCD is 1.5, the temperature of the processing of 20S, duration 1,5 hours

As a result of processing the combined processes of filling, retanning, fatliquoring, antimicrobial treatment, the resulting intermediate product, chemical properties and physical-mechanical characteristics meet regulatory requirements.

Example 3.

Fur rabbit skins after tanning namesnik method is applied liposomal composition, a composition for option 3 and a flow rate of 15 ml/ DM2. The treatment is carried out at a temperature of 25C, then spend the aging for 2 hours

Example 4.

Semi-finished leather after shaving and rinsing process liposomal composition, a composition for option 4 and the consumption of 20% by weight of semi-finished when the LCD is 1.5, the temperature of 28C for 45 minutes.

As a result of the processing of the combined processes of filling, fatliquoring and flavoring. Consumption necessary chemical materials reduced in 5-6 times, the resulting intermediate product, chemical properties and physical-mechanical characteristics meet regulatory requirements.

Example 5.

With the aim of restoring fur semi-finished product is treated with liposomal composition, a composition for option 5, the consumption of 20% by weight of cement, the LCD 5 for 2 h at a temperature of 25-28C.

Example 6.

Specified in example 5, treatment is carried out namesnik method, the consumption of liposomal compositions to 10 ml/ DM2and then aging for 2 hours

Held in examples 5 and 6 namesnik and oconomy methodology is detailed processing can restore range of useful properties fur semi-finished product after aging during operation and to provide the necessary quality of the hair, and the leather. The ultimate tensile strength increased from 9.5 MPa to processing to 14.7 MPa after processing, the temperature of the hydrothermal shrinkage increased, reached a uniform bright color, had increased biostability samples.

Example 7.

Semi-finished leather after tanning process liposomal composition, a composition for option 5, the consumption of 20% by weight of semi-finished when the LCD is 0.3, the temperature of 20-22 ° C for 45 minutes.

Example 8.

Specified in example 7 treatment is carried out namesnik method, the consumption of the composition is 10 ml/ DM2and aging 45 minutes.

Held in examples 7 and 8 oconomy and namesnik treatment can restore a range of useful properties of leather material after aging during operation, thus combining the processes of filling, retanning, fatliquoring, dyeing, waterproofing, flavoring and antimicrobial treatment.

The consumption of chemical materials was reduced in average by 5-6 times, when this is achieved the required quality of the semifinished product.

The tensile strength of the samples increased from 13 MPa to processing to 19.2 MPa after treatment, the rate of hydrophobia properties, increased biostability.

Example 9.

Fur rabbit skins after tanning cause liposomal composition, a composition for option 6, the flow rate of the composition is 12 ml/DM2the processing temperatures of 26-28C, aging for 2 hours

The composition according to option 6 has the necessary viscosity that enables you to evenly distribute it on the scalp. Processing reduces abrasion hairline 1.5 times and to obtain a uniform and deep dyeing of hair with resistance to wet friction 5 points.

Example 10.

The semifinished fur after tanning process namesnik method from the flesh side of liposomal composition, a composition for option 7, the flow rate of the composition is 10 ml/DM2the treatment is carried out at a temperature of 20-22 ° C and subsequent aging 45 minutes

The resulting intermediate product is used for the manufacture of fur suede.

This treatment allows to combine the processes of filling, fatliquoring, dyeing, waterproofing and to receive the semi-finished product that meets regulatory requirements.

From the presented examples show that the proposed slate compact processing leather and hair at room temperature, with reduced consumption of chemical materials, while providing the required quality of the semifinished product.

1. Liposomal composition for processing leather and fur semi-finished product, including swelling in water, a polymer, a phospholipid and at least one of the following target compounds: organic tanning agent, dye, flavor, water repellent, antibacterial drug, neamblysomus fat in number, wt.%:

The phospholipid 2,0-7,0

Swelling in water of the polymer 0,4-4,0

Organic tanning agent 2,0-4,0

Dye 0,2-2,0

Flavor 0,01-0,03

Bactericidal drug 0,1-1,0

Repellent 0,05-1,0

Neamblysomus fat 1,0-5,0

Water the Rest

2. The way of processing leather semi-finished product, including its treatment of liposomal composition containing swelling in water, a polymer, a phospholipid and at least one of the following target compounds: organic tanning agent, dye, flavor, water repellent, antibacterial drug, neamblysomus fat in number, wt.%:

The phospholipid 2,0-7,0

Swelling in water of the polymer 0,4-4,0

Organic tanning agent 2,0-4,0

Krassi is 1,0

Neamblysomus fat 1,0-5,0

Water the Rest

and the treatment is carried out at a temperature of 20-28C, the flow rate of the composition of 20-50% by weight of semi-finished product within a 0.75-2 hours

3. The method according to p. 2, characterized in that the processing of semi-finished leather are namesnik method.

4. The way the fur semi-finished product processing, including processing of liposomal composition containing swelling in water, a polymer, a phospholipid and at least one of the following target compounds: organic tanning agent, dye, flavor, water repellent, antibacterial drug, neamblysomus fat in number, wt.%:

The phospholipid 2,0-7,0

Swelling in water of the polymer 0,4-4,0

Organic tanning agent 2,0-4,0

Dye 0,2-2,0

Flavor 0,01-0,03

Bactericidal drug 0,1-1,0

Repellent 0,05-1,0

Neamblysomus fat 1,0-5,0

Water the Rest

and the treatment is carried out at a temperature of 20-30C, the flow rate of the composition of 20-50% by weight of cement, the volume ratio of 5-15 within 0.75 to 2 hours

5. The method according to p. 4, characterized in that the processing of semi-finished lead namesnik method.

 

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