The way of processing leather and fur

 

(57) Abstract:

The inventive method of processing leather and fur for fatliquoring and waterproofing leather and fur used as a compound of formula 1, where R1- oleyl, R2- CH= CHCOOH, R3- H, A - CO-or R1- oleyl, R2- CH3, R3- CH3A - CO-or R1- oleyl, R2- COOH, R3- H A - CH2in the amount of 0.5-5%. from the weight of shaved leather or the wet weight of the fur, with greasing and hydrophobic carried out during or after doubleya at pH 4-9 and then bringing the pH to 3.5 to 5.0. The structure of the formula 1 described in the claims. 6 C.p. f-crystals, 1 table.

The invention relates to the use of N,N-disubstituted-aminopropionic acids as emulsifiers, wetting, surface-active substances in drugs for treatment and for imparting water-repellent properties of the leathers and furs.

Alkylenediamine acid, alkylenediamine acid and acylated alkylenediamines acids themselves known.

In U.S. patent N 2468012 retrieves N-alkylenediamines acids and their use as detergents, emulsifiers and foam stabilizers. Getting osushestvleniu acid to the corresponding acids or salts.

In the patent application Germany N 2054649 describes N-acyl-N-alkylenediamine acid, which is produced by conversion of amines derived from acrylic acid as esters of acrylic acid, acrylnitrile or acrylamide, and the subsequent reaction with anhydrides. In the last stage of the synthesis omelet function ester, nitrile or amide to acid. The products are obtained as aqueous or aqueous-alcoholic solution.

These known compounds have a number of disadvantages. The required method for producing a stage saponification leads to the fact that products can be obtained only in solution and as 100% substance without further process steps can not be obtained. Education gelatinizers structures can be obtained in water only 20-30% solutions pasty consistency. Only the joint use of alcohols, which is disadvantageous, the concentration may be increased by approximately 50% since the saponification is carried out in strongly alkaline region, the products after adjusting to pH 5 to 8, which are required for many applications, such as textiles, have a high salt content, which, however, are often undesirable.

When using solid bonds alkylamines joining ABM) resulting in reactive acrylic derivatives accelerate undesirable side reaction formation Diadochos. When this adverse reactions the second molecule acrylic derivative added to the already formed a derived N-alkylenediamines acid, forming a tertiary amine, which can no longer be allroutes in the next stage of the synthesis.

Finally, the harmful influence as the smell of the residual content of acrylic ester or Acrylonitrile in the product. So, one can clearly feel the residual content of 0.1% of the acrylic ester.

There is a method of waterproofing leather and fur silicone oil in the presence of a salt of N-(C9-C20-acyl)-amino acids as emulsifier [1]

However, in the case of the method used salt N-(C9-C20-acyl)-amino acid, however, it is incomparable with the method according to this application, as in the case of a posted description of the invention the specified salt is used as an emulsifier for silicone oil, while in the case of the present invention offer the products according to the invention forming the formula 1 themselves gidrofobiziruyuschey tool.

Becoming dorogostoyashie receiving, adequate lubrication and subsequent waterproofing in a single stage process using a single product. Further advantages result from the subsequent description text about the possibilities of application and combination.

A method of processing leather and fur, including zadublirovannye their simultaneous greasing and hydrophobicity in the solution of the chemical reagent [2]

The invention relates therefore to a method for imparting water-repellent properties of the skin and furs in the application of new compounds by themselves or in a mixture with other known means for imparting water-repellent properties.

Waterproof skin to get, mainly in the following two ways: 1. Filling capillarity, absorbent fibrous intervals vodolatski substances.

Water-insoluble substances, such as fats, waxes, wax or certain polymers show this undesirable concomitant phenomenon, in particular, have a negative impact on important facilities socks properties air permeability. Better behave compounds that swell due to the absorption of water and thus support the effect of ownership the imps emulsifiers water in oil (W/O).

2. Floor beams fibers of hydrophobic substances. Emulsifiers that can form complex compounds with multivalent metal ions (cations) can in many cases also include the complex chromium compound, collagen and cause in this case, the hydrophobization. Such emulsifiers are associated chemically with exposed chrome or aluminum tanning fibers of the skin and reduce due to hydrophobic coating wettability and water absorption. The decrease in the effective flowing property is reflected in the formation of spherical drops (effect of vodootlivnye). Significantly increased for the last time requirements subjected to a hydrophobization skin almost cannot be achieved or can be achieved only at the expense of other important properties by means of known methods of waterproofing. Top skin for everyday wear should meet such requirements, which a few years ago showed only the official skin (for military equipment), but without forgoing the comfort of socks, fashionable appearance, etc.

For this reason, adhered, for example, the two-stage of waterproofing.

The finished dried or finished leather can fill the covers when required for wetting drying temperature between 90 and 100oC, which leads to a significant loss of size. Also, is the problem of high amount of organic solvents, which is discharged into the environment.

Particularly undesirable in the sense of sustainable production is the fact that the additional processing associated with additional, undesirable working stage. 2 Therefore, the objective of the invention was the development of a method for waterproofing leather and furs, which can be carried out in one working stage, in aqueous solution and in the drum and by means of which it is possible to achieve simultaneously the fatliquoring and high waterproofing. In addition, the applied auxiliary means you can possibly get easier and they are inexpensive and reach a sufficient fatliquoring and sufficient waterproofing not only at the stage finish, but with a single product.

This task is the use of compounds of General formula 1:

< / BR>
where R1oleyl, R2-CH=CHCOOH, R3-H, A-CO-or R1- oleyl, R2-CH3, R3-CH3A-CO-or R1oleyl, R2-COOH, R3-H A-CH2.

The products according to the invention is used directly or in their at least partially neutralized tion, or neitralizovannom, in most cases, pasty products dissolve in hydrocarbons and/or chlorinated hydrocarbons, if necessary by means of agents, dissolution, and then at least partially neutralized. For this purpose, the base, especially an organic primary, secondary and tertiary amines and alkanolamines, as well as aqueous solutions of ammonia and hydroxides of alkali metals. Emulsifying action neutralized products allows you to get water-based products.

Compounds according to the invention is administered in an amount of from 0.1 to 25, preferably from 1 to 15 wt. in terms of sliced with skin or wet weight of furs at pH-values between 4 and 9, after which the pH value is reduced to 3.5 to 5.0, and if necessary fix using 2-, 3 - or 4-valent metal salt.

Used for waterproofing composition according to the invention contains appropriate 5-80 wt. preferably 10-70 wt. compounds according to the invention of General formula 1, if necessary 20-70 wt. preferably 30-60 wt. hydrocarbons and/or chlorinated hydrocarbons, if necessary with the agents of dissolution, as the high-boiling products from oxosynthesis, and the rest to Noi of waterproofing, means of waterproofing according to the invention can be used together with known means for fatliquoring and/or by means of waterproofing, as a partial esters of phosphoric acid, silicone sarcoid oleic acid and/or (chloro-)-paraffins.

If you use a partial esters of phosphoric acid, prefer partial esters of alcohols with a chain length from C4to C20preferably C16-18that, if necessary, oxacillinase, in quantities of from 0.5 to 30 wt. preferably 1-20 wt. (in recalculation on 100 g of product of waterproofing).

The combined use of acid esters of phosphoric acid can be implemented in such a way that they are administered together with the compounds according to the invention is diluted and then neutralized with last. Esters of phosphoric acid can also be used in already neutralized form. The use of esters of phosphoric acid was proposed, for example, to reduce the extractable fat content; this is an advantage especially in leather for clothing because of improved due to this resistance to chemical cleaning.

Because in addition to the compounds according to the invention apply silicone oil, the last used number is as silicone oils can be applied commercial polysiloxane, as dimethyl - or methylphenylpolysiloxane. Preferred viscosity range from 100 to 500 milliput/sec. This silicone oil with the connection according to the invention is administered, if necessary, together with hydrocarbons and/or chlorinated hydrocarbons or agents of dissolution. The use of silicones is preferably to achieve certain desired surface effects, such as soft facial skin.

To further improve the softness and to achieve a fatter neck you can also use sarcoid oleic acid. In order to achieve certain effects, you can apply any combination of partial esters of phosphoric acid, silicone oil and sarcoid oleic acid with the compounds according to the invention.

Sarcoid oleic acid can be used in addition to the compounds according to the invention in quantities of from 0.5 to 50 wt. preferably 2-20 wt. (in recalculation on 100 g of the introduced composition).

The compound of General formula 1 are those that alkylamines followed by 40-130oC preferably with 70-100oC, attached to (meth)acrylic acid. Although the components of the reaction after mixing exist as organic salt, joining Zack watching. Does not require the use of solvent.

When amines have had with a boiling point below the so-called temperature of the reaction conversion is conducted preferably under pressure, for example in an autoclave.

The transformation of the alkylamine with (meth)acrylic acid is preferably in equimolar amounts.

As alkylamines followed the formula, R1-NH2can be used, for example, the following primary amines: methylamine, Propylamine, butylamine, hexylamine, nonylamine, decylamine, dodecylamine, tridecylamine, isotridecyl, hexadecylamine, octadecylamine, propoxyphene, octyloxyphenyl, oleylamine, aeroxperience, laurylamine, Amin coconut oil, stearylamine, Amin fat or a mixture of the above-mentioned amines. Particularly preferred amines are laurylamine, Amin coconut oil, Amin fat and oleylamine.

Further transformation of N-alkyl-N-(2-carboxyethyl)-amines is carried out with anhydrides, isocyanates, anhydrides of carboxylic acids or anhydrides of sulfonic acids, if we are talking about the acylation. At temperatures 50-100oC allerease tool used in equimolar amounts to a small excess (about 5%).

The reaction with the Noi form. When using anhydrides of monocarboxylic acids, for example acetic anhydride, resulting in an equivalent amount of monocarboxylic acid is separated by distillation or by washing with water.

As anhydrides can be named as examples: acetic anhydride, the anhydride propionic acid, butyric acid anhydride, maleic acid anhydride, succinic acid anhydride, phthalic anhydride.

As isocyanates take into account, for example, utilitzant, colorization, isopropyltoluene.

And the second step of the reaction, i.e. the reaction of acylation, preferably carried out with equimolar amounts of the components of the reaction.

If the acylation reaction is carried out with anhydrides of carboxylic acids or with chloranhydride sulfonic acids, the acid binding means used powdered soda or tertiary amines. Formed during the reaction of the salt can be filtered or wash water.

As examples of carboxylic acid anhydrides can be called: the acid chloride of acetic acid, propionic acid chloride of the acid, acid chloride butyric acid and the appropriate acid chlorides sulfonyl is locality.

Further transformation of the formed N-alkylenediamines acid can also be performed with alojamiento carboxylic acids, preferably chlorine substituted carboxylic acid (for example, with Harborview acid, Chloroacetic acid, chloropropionic acid and harpalani acid), or with (meth) acrylic acid.

Due to the new method can obtain N,N duhsasana derivatives-aminopropionic acid according to the invention in the same way in the two stages of the synthesis without the formation of by-product. Products receive 100% form without solvent.

For neutralization of N, N duhsasana derived b-aminopropionic acid is mixed with an aqueous solution of a hydroxide of an alkali metal, hydroxide of alkali metal or hydroxide of ammonia. Depending on the concentration and neutralizing means getting aqueous solutions from viscous to pasty.

In a preferred execution of the neutralization is carried out with organic bases. As organic bases taking into account especially primary, secondary and tertiary amines. An example for this are the bonds alkylamines and alkanolamines. Especially preferred ethanolamine, and in short supply. As described above, according to the invention derivatives of N,N duhsasana b-aminopropionic acids and their salts are used as emulsifiers and wetting or as a gentle skin surface-active agents in cleaners. Another area of application is a composition for imparting water-repellent properties of the skin.

The basis of the invention is a circuit to develop a method for imparting hydrophobicity to the skin and skins, which you can carry out single-stage, in the water tub and the drum and through which it is possible to achieve simultaneous softening and solid gidrofobizirovan. Moreover, your assistive tools should just be prepared, should be affordable and adequate lubrication and subsequent waterproofing must be attained not only in one stage of processing, but also by using a single product.

Example 1. In a flask with stirrer, thermometer and refrigerator are placed 534 g (2 mol) of oleylamine and heated to 60oC. for 30 minutes was added dropwise 144 g (2 mol) of acrylic acid, and the temperature rises to approximately 90oC. and Then stirred in, the other 2.5 hours the 70oC and mix parts in 196 g (2 mol) of maleic anhydride. To complete the reaction is stirred for 2 hours at 70-80oC. Get monoamide N-oleyl-N-(2-carboxyethyl)maleic acid as a light brown paste.

Acid value: 250 mg KOH/g

The residual content of the basic nitrogen: 0.2 mmol/g

For neutralization was added dropwise at 80oC under stirring 122 g (2 mol) of monoethanolamine.

Example 2. In accordance with example 1 attach 269 g (1 mol) of stearylamine to 72 g (1 mol) of acrylic acid and make the reaction mixture with 98 g (1 mol) of maleic anhydride. Monoamide N-stearyl-N-(2-carboxyethyl) maleic acid solidifies at room temperature in a light brown paste.

Acid number: 251 mg KOH/g

The residual content of the basic nitrogen: 0.32 mmol/g

Neutralized with 100oC with 37.5 g (0.5 mol) of isopropanolamine.

Example 3. In accordance with example 1 attach 486 g (2.0 mol) of lauriecipriani to 144 g of acrylic acid (2.0 ml) and turn the reaction mixture with 196 (2 mol) of maleic anhydride. Monoamide N-laurylamine-N(2-carboxyethyl)maleic acid solidifies at room temperature in tennisnogo nitrogen: 0.3 mmol/g

Example 4. In accordance with example 1 attach 785 g Amin coconut oil (3.72 mol, the content of the basic nitrogen: 4,74 mmol/g) and 268 g of acrylic acid (3.72 mol) and make the reaction product with and 364.8 g (3.72 mol) of maleic anhydride. Get red-brown, viscous oil.

Acid number: 290 mg KOH/g

The residual content of the basic nitrogen: 0.25 mmol/g

For nejtralizacii buried under 80oC under stirring 554 g (3.72 mol) of triethanolamine.

Example 5. In accordance with example 1 added 101 g (1.0 mol) of hexylamine to 72 g (1.0 mol) of acrylic acid and convert the reaction product with 98 g (1.0 mol) of maleic anhydride. Get monoamide N-hexyl-N - (2-carboxyethyl)maleic acid as a light brown oil.

Acid number: 418 mg KOH/g

The residual content of the basic nitrogen: 0.15 mmol/g

Example 6. 534 g (2 mol) of oleylamine heated to 60oC in flask, equipped with stirrer, thermometer and a refrigerator. Within 30 minutes drip 172 g (2 mol) of methacrylic acid, and the temperature rises to approximately 85oC. To complete the reaction the mixture is stirred for 3 hours at 100oC. Determination of the primary is g (2 mol) of acetic anhydride. After another 2 hours the formed acetic acid is distilled at a vacuum of 20 mbar. Get N-oleyl-N(2-carboxy-2-methylethyl)ndimethylacetamide as brown, clear oil.

Acid number: 139 mg KOH/g

The residual content of the basic nitrogen: 0.1 mmol/g

Neutralized with 80oC using to 112.2 g (2 mol) of KOH dissolved in 2492 g of water. Receive an aqueous solution of 25% solids.

Example 7. Analogously to example 1 267 g (1.0 mol) of oleylamine added to 72 g (1.0 mol) of acrylic acid. Then when the 90oC enter 148 g (1.0 mol) of phthalic anhydride acid units and stirred for 33 hours at 100oC. Monoamide N-oleyl-N-(2-carboxyethyl)phthalic acid is a yellow-brown paste.

Acid number: 225 mg KOH/g

The residual content of the basic nitrogen: 0.5 mmol/g

Example 8. Analogously to example 1 attach 267 g of oleylamine to 72 g of acrylic acid. Product fitting mixed with 55 g of anhydrous sodium carbonate and 100oC buried 301 g (1.0 mol) of acid chloride of oleic acid in approximately 2 hours. After another 2 hours the acylation finish. Formed salt is washed with water.

Acid number: 9 the ru 6 attach 267 g (1.0 mol) of oleylamine to 86 g (1.0 mol) of methacrylic acid.

After joining added to the reaction mixture of 101 g (1.0 mol) of triethylamine and parts at 70 90oC 190.5 g (1.0 mol) of acid chloride of para-toluenesulfonic acid. After attenuation exothermic reaction is stirred for 2 hours at 90oC and then washed with salt water. Amide N-oleyl-N-(2-carboxy-2-methylethyl) and para-toluenesulfonic acid get as dark brown viscous oil.

Acid number: 99 mg KOH/g

The residual content of the basic nitrogen: 0 mmol/g

The infrared spectrum IR: C=O 1729 cm-1; C=C 1620 cm-1(aromatic hydrocarbons); SO2-N 1330 cm-1and 1170 cm-1.

H-nuclear magnetic resonance: d 7 8 ppm aromatic protons.

To neutralize added at 90oC under stirring 105 g (1.0 mol) of diethanolamine.

Example 10. Analogously to example 1 attach 267 g (1.0 mol) of oleylamine to 72 g (1.0 mol) of acrylic acid.

After joining type 53 g (0.5 mol) of powdery sodium carbonate and buried at 110oC of 114.5 g (1.0 mol) of acid chloride of methansulfonate. For additional reaction stirred for further 2 hours at 110oC. the Formed salt is washed with water. Get amide N-oleyl-N-(2-carboxyethyl)-masterzone basic nitrogen: 0 mmol/g

IR: C=O 1730 cm-1; SO2N 1320 cm-1and 1160 cm-1.

Example 11. Analogously to example 1 attach 267 g (1.0 mol) of oleylamine to 72 g (1.0 mol) of acrylic acid.

After joining add 115 g (1.0 mol) of N-ethylmorpholine and at 40

50oC was added dropwise 133 g (1.0 mol) toluenesulfonate. Leave for further reaction for 1 hour and get N-oleyl-N-(2-carboxyethyl)-N-colormotion as brown oil.

Acid number: 89 mg KOH/g

IR: C=O (acid) 1720 cm-1; N-C=O 1660 cm-1and 1560 cm-1C=C (aromatics) 1590 cm-1and 1610 cm-1.

Analogously to example 1 attach 267 g (1.0 mol) of oleylamine to 72 g (1.0 mol) of acrylic acid.

After joining add 115 g (1.0 mol) of N-ethylmorpholine and buried at 40 50oC 99 g (1.0 mol) of n-utilizationof. Leave for 1 hour for additional reactions and get N-oleyl-N-(2-carboxyethyl)-N'-mutilation as a light brown oil.

Acid number: 96,4 mg KOH/g

IR: C=O (acid) 1720 cm-1; N-C=O 1620 cm-1and 1540 cm-1.

Example 13. Analogously to example 1 load 204 g realmediaview acid (0.6 mol) of 70 g of Chloroacetic acid (sodium salt, 0,6 kalapawai is 106.6 g of 45% sodium lye (1.2 mol) over 45 minutes, moreover, the viscosity of the reaction mixture increases. Additionally stirred for 4 hours at 82oC, then neutralized with concentrated hydrochloric acid and poured into excess water, and the product precipitates. The product (N-oleyl-N-carboxymethyl-aminopropionic acid) is separated and dried.

Acid number: 245 mg KOH/g

Introduced as the original product product accession get analogously to example 1 from becoming oleylamine with acrylic acid in equimolar amounts.

Example 14. Use 267,5 g oleylamine (1.0 mol) and 0.2 g of HQME (gidroaerodinamicheskogo ether). Here is buried under cooling to a temperature maximum 70oC 144 g of acrylic acid (2.0 mol), then then heated to 140oC. Ranging from 80oC, the reaction proceeds exothermically and the viscosity strongly increases. After about 10 minutes at 120oC the mixture becomes pasty. Then stirred for further 3 hours at 140oC. the Product (N-oleyl-N-(2-carboxymethylaminomethyl acid) has an acid number 253 mg KOH/g

Example 15.

a) In the apparatus with stirrer load of 13.6 g of water and an increase of 22.7 g of sodium lye (45%) and heated to approximately the 50oC. Then when eshivot until smooth.

(b) the Product of (a) used in the following recipe for making waterproof leather and investigated the water-repellent effect:

Leather from the hides of cattle:

type: waterproof.

Material: cow skin, wet blue; height after planing: 2,0 mm

The percentage data in terms of sliced mass.

Flushing: 300% of water, 35oC + 0,5 acetic acid 1:5x15 minutes.x1 vol. part of concentrated acetic acid and 5 vol. parts of water.

The solution down.

Flushing: 300% of water, 35oC, 10 minutes.

The cleaning solution down.

Neutralization: 150% water, 35oC.

Dyeing: 2% undissolved Na-formate 90 minutes

Retanning: + 2% undissolved dye 15 min + 4% undissolved hannigan QFxx30 min + 12% undissolved chestnut N 60 min 8 revs/min during the night + 250% water 60oC 10 min.

The cleaning solution down.

Flushing: 300 water, 60oC, 10 min.

The solution down.

Hydrophobicity: 100% water 60oC + 0.5% ammonia 1:5x2 min x 1 vol. part of concentrated ammonia and 5 vol. parts of water and 6 parts of water and 0.5 formic acid 1:5 to 15 minutes, pH of 3.6 to 4.0.

The solution down.

2 x washing: 300% of water, 40oC for 10 minutes.

The cleaning solution.

Mounting: 150% water 40oC, 3% Baucham Axx, undissolved, 60 min, pH of 4.2 to 4.8.

The cleaning solution be omitted.

3 x wash: 300% of water, 20oC for 10 minutes.

The solution down.

The skin overnight to dry on the box, stretch, dry in vacuum (80oC/2 min), air to air, to condition, soften, smooth (80oC/0.5 min).

xx). The company products are WIRE AG, Leverkusen.

The Bally penetrometer: (10% of precipitation).

Time proviamoci: >7/>7 hours.

Vlagopoglascheniem, after 7 hours of 9.9/10,4.

Moser: longitudinal bending: 21924/19207.

Vlagopoglascheniem, after longitudinal bends 8,0/7,1.

Example 16. Used obtained in example 1 amide. In the apparatus with stirrer placed 30 g of water and 7 Diisopropylamine at a temperature of about 50oC before under stirring drive the organic phase, consisting of 14 g of amide according to the invention, 3.5 g amine salt of the ester of phosphoric acid (obtained by turning alfala 16 to 18, mixtures of fatty alcohols from synthesis Ziegler, with P2O5supposedly the homogeneous state.

This composition was used in the following recipe for making skin for military equipment:

Leather from the hides of cattle.

Type: leather for military equipment.

Material: cow skin, wet blue, thickness after planing: 2,0 mm

The percentage data in terms of shaved weight of the leather.

Flushing: 300% of water, 35oC, of 0.5% formic acid 1:5x15 minutesx1 vol. part of the concentrated acid with 5 vol. parts of water.

The solution to lose weight.

Neutralization: 100% water 35oC, 3% PA-formate, undissolved, 15 min, pH: 4,4 + 0,5% sodium bicarbonate 1:10 90 min, pH of 4.8.

The solution to lose weight.

Flushing: 300% of water, 30oC, 10 min.

The solution to lose weight.

Zadublirovannye: 200% water 30oC, 1% dye 1:20 20 min, + 4% undissolved tanigawaxx30 min (Q) + 12% quebracho, undissolved 60 minutes Automatics during the night. Rest/rotation 15 min/1 min + 200% water 60oC 20 minutes

The solution to lose weight.

Flushing: 300% water, 60oC, 10 min.

The solution to lose weight.

Hydrophobicity: 200% water 60oC 10% funds for hydrophobization in example 16, diluted with water in you and 5 vol. parts of water +3% of BichromexxF, undissolved, 60 min, pH: 3,6 3,7.

The solution to lose weight. 3 x wash: 300% of water, 25oC for 10 minutes.

The solution to lose weight.

Rinsing: water 20oC for 10 minutes.

The skin over night to dry on the box, stretch, dry in vacuum (80oC/3 min), air to air, soften, smooth (80oC/0.5 minute).

xxThe products BAYER AG, Leverkusen.

The Bally penetrometer (10% precipitation).

Time proviamoci: >420/>420 minutes.

Vlagopoglascheniem, after 7 hours: 12/14.

Moser: longitudinal bends 29785/25971.

Vlagopoglascheniem, after longitudinal bends 10/12.

Example 17. a) Download 30.5 g of water and 5.5 g of sodium lye 45% in the apparatus with a stirrer at a temperature of about 50oC. Under stirring slowly introducing the organic phase, consisting of 18 g of amide of example 1, 40 g of high-boiling mineral is small and 6 g of dimethylpolysiloxane with a viscosity of 350 mPas/s, then place until smooth.

b). The composition of (a) used in the formulation according to example 16 and he gave the following results:

The Bally penetrometer (10% precipitation).

Time getting wet: >420/>420.

the pany, after longitudinal bends 9/8.

Example 18. Applied amide according to the invention from example 1.

In the apparatus with stirrer download 39 g of water with 3 g of 45% sodium liquor at a temperature of about 50oC. After that enter the organic phase from 6 g of amide of example 1, 6 g of sarcosine oleic acid, 40 g of high-boiling mineral oil and 5 g of dimethylpolysiloxane with a viscosity of 350 mPas/s slowly with stirring and homogenize. Thus obtained product is used in the formula for waterproof leather for examples 16 b), and were obtained the following values:

The Bally penetrometer (10% precipitation).

Time getting wet: >420/>420.

Vlagopoglascheniem, after 7 hours 9/10.

Moser: longitudinal bends 29885/30147.

Vlagopoglascheniem, after longitudinal bends 14/11,6.

Example 19. a). In the apparatus with stirrer download 39 g of water and 4 g of sodium lye, 45% at a temperature of about 50oC. Under stirring enter the organic phase, consisting of 12 g of amide from example 4, 35 g of high-boiling hydrocarbon, 5 g of dimethylpolysiloxane and with a viscosity of 100 mPas/s and 5 g of a partial ester of phosphoric acid (alhola 12 18, transformed with P2O5, a molar ratio of 3 to 1) and parousia values:

The Bally penetrometer (10% precipitation).

Time getting wet: >7/7> hours.

Vlagopoglascheniem, after 7 hours: 13,3/12,0.

Moser: longitudinal bends 15849/16717.

Vlagopoglascheniem, after longitudinal bends 12/8.

Example 20. Used is described in the example 13 product, 20 g of this substance was loaded into the apparatus with stirrer, 68,4 g chloroparaffin with 40% of the chlorine in the chain and was stirred at 100-105oC until smooth. After cooling to approximately 70oC to the mixture was added 11.6 g of diisopropanolamine for neutralization.

This composition was used in the following recipe for making waterproof leather and investigated for its effect:

Material: cow skin, wet blue, thickness after combustion: about 2.0 mm

The percentage data in terms of sliced mass.

Flushing: 300% of water 35oC, of 0.5% acetic acid 1:5 to 15 minutes.

The solution to lose weight.

Neutralization: 100% water 35oC, 2% of sodium formate, undissolved, 15 minutes + 0.5% sodium bicarbonate 1:10, 90 minutes.

Cleaning solutions pH: 5,3.

A transverse skin incision against bromoresorcinol blue.

The solution to lose weight.

<

Zadublirovannye 1% black paint for chrome leather TU 141% 1:20 to 20 minutes + 4% Tangana (QFxxundissolved, 30 minutes + 12% undissolved, quebracho at 6 revolutions/minute during the night. Prodolenie + 200% water 60oC for 20 minutes.

The solution to lose weight.

Flushing: 300% water, 60oC, 10 minutes.

The solution to lose weight.

Hydrophobicity: 100% water 60oC.

Mounting: 8% of the funds for the hydrophobization 1:4 60 minutes + 1% formic acid 1:5 15 minutes + 3% of Bichrome F 60 minutes, cleaning solutions pH: 3,6-3,7.

The solution to lose weight.

3 x wash: 300% of water, 25oC for 10 minutes.

The solution to lose weight.

The skin over night and dried on the box, stretch, dried in vacuum (80-85oC, 2 minutes), air to air, moisture, soften, smooth under vacuum (80-85oC, 30 s). When working in wet conditions there have been no exceptional observations.

The Bally penetrometer: (10% of precipitation).

Time proviamoci: >7/>7 hours.

Vlagopoglascheniem, after 7 hours of 13.1/8,2.

Moser: longitudinal bends 15407/14320.

Water absorption, after longitudinal bends 7,7/5,0.

Example 21-25. 25 g of compound total triethanolamine mix and at 60oC emuleret in 200 g of water. These compounds are used as waterproofing agents as it remains the tools in the formulation of technical applications according to example 16. The test results presented in the table.

1. The way of processing leather and fur, including retanning their simultaneous greasing and hydrophobicity in a solution of a chemical reagent, characterized in that as a chemical reagent used as a compound of General formula I

< / BR>
where R1oleyl, R2-CH=CHCOOH, R3-H, A-CO or

R1oleyl, R2- CH3, R3CH3A-CO or

R1oleyl, R2COOH, R3-H A CH2< / BR>
in the amount of 0.5-5% by weight of shaved leather or the wet weight of the fur, with greasing and hydrophobic carried out during or after retanning at pH 4-9 and then bringing the pH to 3.5 to 5.0.

2. The method according to p. 1, characterized in that the skin and fur further treated two-, three -, or tetravalent metal salt.

3. The method according to PP. 1 and 2, characterized in that the compound of formula I contains 20-70 wt. preferably 30-60 wt. hydrocarbons, agents, dissolution, and water to 100%

4. The method according to PP. 1-3, characterized in that the compound of formula I contains an incomplete Epistle of 0.5-30 wt. preferably 1-20 wt. 100 g of compound.

5. The method according to PP. 1-4, characterized in that the compound of formula I contains a silicone oil, preferably dimethyl or methylphenylpolysiloxane, in the amount of 0.5-80 wt. preferably 1-10 wt.

6. The method according to PP. 1-5, characterized in that the compound of formula I contains sarcoid oleic acid in the amount of 0.5 to 50 wt. preferably 2-20 wt. 100 g of compound.

7. The method according to PP. 1-6, characterized in that the compound of formula I contains paraffins and/or chlorinated paraffin wax.

 

Same patents:

The invention relates to a method of determining the quality of the skin

The invention relates to chemical treatment of skins, in particular, to their impregnation with the use of fat emulsions, and can be used in making leather for Shoe upper, knotted and skins for clothing

The invention relates to leather production, namely the production of fattening materials and emulsifiers for the leather industry

The invention relates to fur and leather industries and can be used by enterprises engaged in the production of fattening compositions

The invention relates to light industry and can be used in the leather and fur industries

The invention relates to a method of determining the quality of the skin

The invention relates to chemical treatment of skins, in particular, to their impregnation with the use of fat emulsions, and can be used in making leather for Shoe upper, knotted and skins for clothing

The invention relates to methods of treating skins and relates, in particular, to processing, to ensure their efficient storage from a biological point of view, especially in their production process before or after tanning

FIELD: leather industry.

SUBSTANCE: semifinished product is degreased, neutralized, dyed, and lubricated. Dyeing is performed in two washing-interrupted steps with anionic black dye consumed in amount 0.5-0.6% of the weight of semifinished product in each dyeing step. Lubrication is followed by retannage with chrome tanner in amount 0.6-1.0% of the weight of semifinished product (calculated for chromium oxide) and treatment with 0.8-1.0% of spindle oil.

EFFECT: achieved deep black color and high performance characteristics.

1 tbl, 5 ex

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