The method of processing fur sheepskin

 

(57) Abstract:

The method relates to light industry, namely the preparatory and finishing processes of fur production. The method includes: soaking off and spinning, two-stage degreasing aqueous solutions of surface-active substances (surfactants) with intermediate extraction, further pickling - tanning - greasing, doublepane, neutralization with an aqueous solution of ammonia and non-ionic surfactants (nonionic surfactants) and dyeing in the same environment. And for the first degreasing as aqueous surfactant solution using a solution containing a condensation product of flatulation (FG) or oleic acid with triethanolamine (tea) - kationaktivnaya surfactants (cationic surfactant), taken in a molar ratio (0,81,2):1,0, anion surface-active substance (as) (NP sulfonic acid-1 or sulfosalicylate), nonionic surfactants (OP-10 or neonol) and water. For the second degreasing using an aqueous solution containing the condensation products of FG or oleic acid with tea - cationic surfactant, taken in a molar ratio (0,81,2):1,0, ASAS (sulfonic acid NP-1 or sulfosalicylate), nonionic surfactants (OP-10 or neonol) and water. As the nonionic surfactants in aqueous solution to neutralize the use of the condensation products of FG or oleic acid with diethanolamine (deja), nonionic surfactants, taken in mol is containing condensation products of FG or oleic acid with tea-cationic surfactant, taken in a molar ratio (0,81,2):10, and formic acid (85%). The technical result is to improve processing fur sheepskin by increasing the purity of hair (EAP) and the binding of dye to the hair, increase the intensity of staining, the expansion of the means for processing fur sheepskin, used both in the preparatory stages, and finishing processes. 5 table.

The invention relates to light industry, namely the preparatory and finishing processes of fur production.

A method of processing furs, in which raw materials priceswhere and dry conservation method after the first and second soaking and wringing hair (EAP) is directed to the degreased at a temperature of 35oWith liquid ratio (W.K.) = 7 for 2 h following structure: "Atasan Ultra - derivatives of aliphatic alcohol, the product is anionic (1-2 g/l), "Gelon RK - combination products joining of ethylene oxide, nonionic (1.5-3.0 mg/l), sodium carbonate (0.5 g/l). Then left lying, tanning and finishing processes and operations, in particular dyeing, in which, depending on the nature of the dye, prevoditelj for more high-quality color carry out the neutralization process. (Goryachev, S. N., Grigoriev, B. S. "Chemical materials processing technology fur raw materials", M., 1999, S. 96-97, "Technology of processing of fur skins): Createrepo., 1988, S. 94-95).

In this scheme of treating skins of sheep skin with the use of materials firm processes prior to the degreasing and the degreasing, carry out expensive drugs, and the use of sodium carbonate adversely affect the EAP fur sheepskin, that is, the hair loses Shine, reduces its durability, which is one of the negative factors contributing to the unevenness of color.

A method of processing furs, in which raw materials priceswhere and dry conservation method after the first and second soaking and wringing EAP is directed to the first degreased at a temperature of 40oC, W.to. = 7 for 1 h with a solution consisting of a detergent composition "Nefis", which is a mixture of carboxymethyl cellulose (CMC), sulfonic acid, neonols and sodium-tripolyphosphate (6 g/l) and sodium carbonate (0.5 g/l). Then drain, squeezing, shearing, meskene and second degreasing the following composition: washing composition "News M - sodium salt of sulfuric acid esters of high molecular weight fatty alcohols, i.e. anie, tanning - greasing and finishing processes and operations according to the traditional technology, in particular dyeing, which, depending on the class of dye, involves pre-processing using a variety of chemical compounds. When dyeing with acid dyes to produce better color carry out the neutralization process. (Goryachev, S. N., Grigoriev, B. S. "Chemical materials processing technology fur raw materials", M., 1999, S. 88-89, "Technology of processing of fur skins): Createrepo., 1988, S. 94-95).

The disadvantage of this scheme processing fur sheepskin - soda ash use in the processes of degreasing, which adversely affects the EAP, that is, the hair loses Shine, reduces its durability, and is one of the negative factors contributing to the unevenness of color.

There is also known a method of processing furs with subsequent dyeing, in which the subject dyeing material is placed in a bath (the temperature of 60-65oC, W.to. = 20) containing 0.5 g/l of wetting indocin or candolin MN. After a sufficient wetting of the material (approximately 10 min) adjusting the pH to 4.5 with acetic acid (0.5-1 g/l) and add auxiliary creditbureau, in which dyeing) add dye (dereplication). After 10-20 min dyeing add another 0.3-0.5 g/l of dermagen PC. In special situations it is recommended, along with 85% formic acid, add another 0.3-0.5 g/l of dermagen PC. Through the next 15 minutes being 0.5-1 g/l lacovara PAT and 85% formic acid (P. Zeitz "Dyeing hair furs acid dyes", KOP, 5, 1991, S. 8-9).

The disadvantage of this method is the use of imported auxiliary substances and the complexity of the process, consisting in a large number of operations.

The closest claimed is a method of processing in which the skins of fur sheepskin, after soaking and wringing EAP degrease in two stages, between which carry out the extraction, haircut, meskene, usuku, Obridko.

The first degreasing with W.to. = 10, when the 42oWith, within 30-45 minutes the following composition, g/l:

Paste "News", g/l 3,0

Sodium carbonate (soda ash), g/l 0,5

Formalin 40%, ml/l 0,5

Water To 1 liter

The second degreasing with W.to. = 7: 42oWith over 1 h at the same mixing ratio as in the first degreasing, but pasta "News" is used from the end of the first sheepskin is carried out in the boat with W.to. = 8 55oC for 3 h in the following ratio of components, g/l:

Acid black for fur or dermafillers BL, g/l to 4.5

Acid antrahinonovye pure blue, g/l 0,25

Alkylolamides, g/l - 1,0

Formic acid 85%, g/l 5,0

Water to 1 liter

After dyeing the sheepskin is subjected to washing twice with water, Salk-creasing, pressing, drying and finishing operations. (United technology of production of fur skins". M: Createrepo, 1978, S. 14-23, 46-47).

The disadvantage of this method is the relatively low degree of purity of the hair after degreasing, the intensity of staining and uneven coloring of the hair as the height and area of the skin.

The objective of the invention is to improve the quality of treatment fur sheepskin by increasing the purity of the EAP and the binding of dye to the hair, increase the intensity of color, expanding the range of materials for processing fur sheepskin, used both in the preparatory stages and in the finishing processes, reduction of pollution industrial wastewater.

The problem is solved in that in the method of processing furs, comprising: soaking off and pressed volcano subsequent extraction, further pickling - tanning - greasing, doublepane, neutralization with an aqueous solution of ammonia and non-ionic surfactants and dyeing in the aquatic environment; for the first degreasing as aqueous surfactant solution using an aqueous solution containing, g/l:

The product of condensation of flatulation (FG) or oleic acid with triethanolamine (tea), taken in a molar ratio(0,81,2):1,0 - 0,64-1,00

Anion active surfactants - 1,00-1,07

Nonionic surfactants - 4,00-4,29

Water - the Rest

for the second degreasing using an aqueous solution containing, g/l:

The condensation products of FG or oleic acid with tea, taken in a molar ratio(0,81,2):1,0 - 0,86-1,33

Anion active surfactants - 1,33-1,43

Nonionic surfactants - 5,33-5,71

Water - the Rest

as nonionic surfactants in aqueous solution to neutralize the use of the condensation products of FG or oleic acid with diethanolamine (deja), taken in a molar ratio (0,81,2):1.0, with the following ratio of components, g/l:

Ammonia (25%) - 8,0

The condensation products of FG or oleic acid with deja - 0,5-1,0

Water - the Rest

and dyeing is carried out in an aqueous medium containing the condensation products of FG or the oleic celesital - 0,5-3,0

The condensation products of FG or oleic acid with tea - 0,5-1,0

Formic acid (85%) - 1,0-2,0

Water - the Rest

For implementing the method using chemical substances produced by the domestic industry:

nonionic surfactants, such as OP-10 (GOST 8433-81),

neonol (TU 2483-07705766801-98);

anion active surfactants, such as sulfonic acid NP-1 (TU 6-01-1612839-34-90),

Sulphadoxine (TU 248-007-13164401-93);

formic acid (GOST 1706 -78); ammonia (25%) (GOST standard 9-92);

flatulation (FG) (TU 18 of the RSFSR 744-77);

oleic acid (GOST 23239-89);

diethanolamin (deja) (TU 6-09-2652-91);

triethanolamine (tea) (TU 6-09-2448-91).

The method of producing condensation products of FG or oleic acid with deja (FGD or OLD) - nonionic surfactants (nonionic surfactants), taken in a molar ratio (0,81,2): 1,0: in a three-neck flask equipped with anchor stirrer and reflux condenser, download FG or oleic acid, then dispense individual portions deja, synthesis is carried out at a temperature of 170-180oC.

The method of producing condensation products of FG or oleic acid with tea (FGTA or OLT County) - kationaktivnaya surfactants (cationic surfactant), taken in a molar ratio (0,81,2): 1,0: in a three-neck flask equipped with anchor stirrer and turn at a temperature of 170-180oC.

An example of the method.

Fur sheepskin, after soaking and wringing EAP is directed to the first degreasing in the boat with W.K = 10 when 40-42oC for 30 min in the following ratio of components in the bath, g/l:

FGTA - 0,83

Sulphadoxine - 1,03

Neonol - 4,14

Water To 1 liter

Followed by pressing the EAP, haircut, meskene. Next, perform a second degreasing in the boat with W.to. = 7: 42oC for 45 min in the following ratio of components in the bath, g/l:

FGTA - 1,10

Sulphadoxine - 1,38

Neonol - 5,52

Water To 1 liter

Further the sheepskin is subjected to pickling - tanning - greasing, washing, wringing, non, doublepane and neutralization (irrigation) with W.to. = 20, when the 42oC for 1 h in the following composition, g/l:

Ammonia (25%) - 8,0

FGD - 0,5

Water To 1 liter

Then carry out the dyeing of fur in the boat with W.to. = 20 if 65oC for 2.5 h in the following ratio of components in the bath, g/l:

Acid dye - 0,5

FGTA - 0,5

Formic acid (85%) - 2,0

Water To 1 liter

After dyeing the sheepskin is subjected to washing twice with water, Salk-creasing, pressing, drying and finishing operations.

howl sheepskin are presented in table. 1-4.

In table. 5 presents the properties of the fur sheepskin treated the known and the proposed method.

Due to the fact that in the prototype receive only black fur sheepskin to compare the quality of the color of the fur of the proposed method in other colors, we received the samples of fur sheepskin treated the prototype, but with the use of dyes in examples 1-12.

Viviremos dye was calculated by the optical density of the solution.

In the processing method fur sheepskin reagents on the basis of the condensation products FG and oleic acid with tea or deja increases the degree of purity of the EAP and viviremos dye 10-20%, resulting in increased colour intensity of the EAP as the height and area of the skin, and reduces the opportunity easily soiled. In addition, improving the quality of processing allows the use of a wide range of acid dyes, produced by different companies (from light tones to dark), and the dyeing can be carried out as individual dyes, and mixtures thereof. Due to the almost complete viviremos dye from the bath decreases the pollution of waste water coloring substances.

< / the aqueous solutions of surface-active substances with intermediate and subsequent extraction, further pickling - tanning - greasing, doublepane, neutralization with an aqueous solution of ammonia and non-ionic surfactants and dyeing in an aqueous medium, characterized in that for the first degreasing as an aqueous solution of surface-active substances used an aqueous solution containing, g/l:

The product of condensation of protohuman or oleic acid with triethanolamine, taken in a molar ratio(0,81,2): 1,0 - 0,64-1,00

Anion active surface active substance - 1,00-1,07

Nonionic surfactant - 4,00-4,29

Water - the Rest

for the second degreasing using an aqueous solution containing, g/l:

The product of condensation of protohuman or oleic acid with triethanolamine, taken in a molar ratio(0,81,2): 1,0 - 0,86-1,33

Anion active surface active substance - 1,33-1,43

Nonionic surfactant - 5,33-5,71

Water - the Rest

as nonionic surfactants in aqueous solution to neutralize the use of the condensation product of protohuman or oleic acid with diethanolamine taken in a molar ratio (0,81,2): 1.0, with the following ratio by companinon - 0,5-1,0

Water - the Rest

and dyeing is carried out in an aqueous medium containing a condensation product of protohuman or oleic acid with triethanolamine, taken in a molar ratio (0,81,2): 1.0, with the following ratio of components in the bath, g/l:

Acid dye - 0,5-3,0

The product of condensation of protohuman or oleic acid with triethanolamine - 0,5-1,0

Formic acid (85%) - 1,0-2,0

Water - The Rest

 

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