DE1619645A1 - Process for the production of multi-colored synthetic polyamide fabrics - Google Patents

Description

1611645

DR. E. WIEGAND DIPL-ING. W. NIEMANN DR. M. KOHLER DIPL-ING. C. GERNHARDT

MÖNCHEN HAMBURG

TELEPHONE: 55 54 7i 8000 MÖNCHEN 15, 8th Juhi 1967

TELEGRAMMEtKARPATfNT NUSSBAUMSTRASSE

W. 13170/67

Toyο Hayon Kabushiki Kaisha Tokyo (Y a ρ an)

■ method of making multi-colored synthetic Polyamide fabrics

The invention relates to a process for the production of multi-colored synthetic polyamide fabrics or substances, ^

In the production of multi-colored fabrics or fabrics, a working method that has hitherto frequently been used a dyeing of the staple fibers or yarn executed in different colors, after which the so dyed yarns for the manufacture of textile goods are woven or

be stripped or knitted. One such common one However, the dyeing process is associated with many problems. For example, when dyeing a textile product

10984 5/1890

should be while it is still in the form of yarn, are a stage of changing the yarns wound in cone or cheese form in order to convert them into one for dyeing suitable shape, for example strand shape, to bring and a stage of changing the dyed yarns back into one Conical or cross-coil shape also required. this necessitates an increase in procedural costs. In addition, a strand tangle or disorder as well as fiber breakage becomes apparent what can occur during these stages of work is a cause to the deterioration of the quality of the finished products. In addition, a number of these stages are required for each color. In order to meet the demand for textile products of various colors that can be requested in the market ", therefore, it becomes disadvantageously necessary to advance the amount of desired dyed yarns with respect to each Assess color and keep a supply of dyed yarn for each color.

On the other hand, it has been known that one can obtain a ^v multi-colored dyed fabric by a polymer formed from at least two types of fiber fabric, for example polyamide fibers, polyester fibers and polypropylene fibers, with a single dye bath using a suitable dye and of suitable dyeing conditions in a special way colors. However, since there are two types of pasers, which are essentially different types, look at their physical

T0SB15 / 1890

/ 1619545

- 3 - ■■ '; . - ■■■ '- ■■

and mechanical properties, occur such disadvantages that this difference is the cause for a disturbance in the mechanical treatment or processing, for example crimping, can be and a Textile fabric with uniform physical properties cannot be obtained.

One of the primary objectives of the invention is to create a process for the production of multi-colored synthetic polyamide fabrics that have a multi-color effect with a have sharp contrast between the colors, for example of woven, knitted or crocheted with a square pattern Textiles, woven with a pepper-and-salt pattern, knitted or crocheted textile goods and pile textile goods provided with any color pattern ^ with none Dyeing of the polyamide fibers or threads carried out in advance will. .

The method according to the invention to achieve the above-described purposes is characterized in that a synthetic polyamide fabric, which is made from at least two polyamide fibers with a difference in the content of terminal amino groups, is made from synthetic polyamide fibers with 5 × 10 "to J 10 ^ mol / g of terminal Aniinogruppeii, synthetic polyamide fibers with-less than 5 χ JLO Wol / g, of terminal amino groups and synthetic polyamide fibers with more than J χ ΙΟ "- ³ I-Iol / g of terminal amino groups selected

Π;: 90

are, in solid state, brought into contact with a dyeing medium maintained at a pH of 4 to 7 and containing an acid dye with an extent of color absorption of less than 1 / 2Q, the difference in the terminal amino groups being at least 2 χ 10 "^ mol / g is and the dye absorption rate. the ratio of the dye absorption of a synthetic polyamide fiber with a content of terminal amino groups of 5 x 10 ^- - ⁵ to 6 χ ΙΟ "" - ³ mol / g when immersed in an aqueous dye bath with a content of 2 % owf of this acid dye and pH 7 to that of the same polyamide fiber when immersed in a dye bath identical to the aforementioned aqueous dye bath except that it is kept at pH 3.

Examples of the synthetic polyamide fibers used according to the invention are poly- ε-capronamide (nylon 6), polyhexamethylene adipamide (nylon 66) _s a polymerization product of 9-aminononanoic acid (nylon 9) * polymerization product of 11-aminoundecanoic acid (nylon 11), polyhexamethylene sebazamide ( Nylon 610), mixed polyamides thereof and mixtures of these polyamides or the like. The fibers in the textile goods can be in the form of continuous threads or staple fibers.

The content of terminal amino groups of the synthetic Polyamide can be added by adding a modifier

C / 18 9 0

1819645

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the polymerization system for increasing or decreasing the number of terminal amino groups when a precursor of a fiber-forming polyamide such as ε-caprolactam or hexamethylene ammonium adipate, ie the salt of nylon 66, is subjected to polymerization conditions. Suitable modifiers for reducing the content of terminal amino groups are, for example, mono- or dibasic acids such as acetic acid, benzoic acid / butyric acid, adipic acid, sebacic acid, succinic acid, acetoacetic acid and tartaric acid or the halides * Suitable modifiers for increasing the content of terminal amino groups are, for example, Motto -'or diamines, such as ethylene diamine, trimethylene diamine, phenylene diamine, tetramethylene diamine, pentamethylene diamine. Hexamethylenediamine and monoaminaphenol. The content of terminal amino groups in the polyamide fiber is determined quantitatively by dissolving a test piece in a mixture of phenol and ethanol with a volume ratio of 40:10 and titrating with / 50 hydrochloric acid using thymol blue as an indicator. Ordinary "" FoIy - ^ "- capronamide (Hylon 6) - fiber material has a content of terminal amino groups in the range of about J 10" ^ to 6 χ 10 "" 5 mol / g of the polyamide. \.

The one used in the method according to the invention The starting material should consist of at least two types of Polyamide fibers that have a minority in terminal content Amino greetings have ^ be formed, with the fibers

los- ί ε / 1 ego. '■■■ "■ -.' · -. '

1813645

from the group of synthetic polyamide fibers with 5 x ΙΟ "" - ³ to 7 χ IG ■ mol / g of terminal amino groups, synthetic polyamide fibers with less than 5 x 10 - ^ mol / g of terminal amino groups and synthetic polyamide fibers with more than 7 χ 10 " ^ Mol / g of terminal amino groups are selected and the difference in the content of terminal amino groups should be at least 2 χ 10 mol / g. This difference in the content of terminal amino groups is preferably at least J5.5 x 10 ** ^ mol / g.

The undyed fabrics used as the starting material

can be woven, knitted, knitted or non-woven fabrics in which at least two of the synthetic polyamide fibers defined above are present. The woven or knitted or crocheted fabrics can be formed from at least two different spun or twisted yarns one of which is made from one type of synthetic polyamide fiber and the other made from the other type of fiber with a different content of terminal amino groups as explained above. Depending on the web,

de « Piece or knitted patterns / end products are obtained with multicolored patterns. The starting material can consist of at least consist of a kind of spun or endless yarn, provided that this yarn is made from a fiber mixture consisting of at least two types of fibers as described above, is spun or -sgSbcb at least two endless fiber mats-

+) o is a plied yarn in which,

1613645

rials as defined above twisted together are. The starting materials can also be in the form of a pile fabric, for example a carpet.

The dyes useful according to the invention can best be defined as acid dyes having a color absorption level of less than 1/20, this level of absorption being the ratio of the color absorption of a synthetic polyamide fiber having a terminal amino group content of 5 x IQ to 6 k 10 ~ - ^ mol / g when immersed in an aqueous dye bath containing 2% of the acid dye Sj maintained at a pH of 7 to that of the same polyamide fiber when immersed in a dye bath containing the above called Aqueous Dye Bath is the same with the modification that it is kept at a pH of -35. The ratio of dye absorption at pH 7 to that at pH 3 can be referred to as the "dye absorption ratio" * The dye absorption ratio of a given particular dye can be easily measured by a simple preliminary dye test. In this preceding dyeing test, aqueous dye baths with a pH value of 3 or 7 and a content of 2 % owf of the given dyes are produced and a synthetic polyamide fiber with a content of'5 χ 10 "- ³ to 6 χ 10 mol / g on terminal amino groups, whereby the fiber material does not necessarily have to be in the form of a Gaebes, is in each of the

¹⁰ / T 89 0

so produced dye baths are immersed. The dyebaths are heated to an extent of about 2 ° C / min to about 98 ⁰ C and held at that temperature for about 1 hour. At the end of this period, the colored sample is removed from the bath / washed with water and dried in air and then in an E3 Lecator. The dyed fiber material is then dissolved in formic acid or in a mixture of phenol and ethane tetrachloride (volume ratio 6θΆθ) to form a solution with a concentration of 0.04 wt .- ^. The absorption of the solution is measured with the aid of a photoelectric colorimeter using white light from a tungsten lamp, the complementary color of the color of the solution being filtered off. The ratio of the absorbance of a sample colored at pH 7 to the absorbance of a sample colored at pH j is calculated and this ratio gives what is referred to herein as the "color absorption ratio".

The use of an acid dye with a color absorption ratio below I / 30 is particularly advantageous. Preferred acid dyes which are used in the process according to the invention are, for example: CI. Acid Orange 10

CI. acid orange 27 CI. acid Red 18th CI. acid Red CI. acid Red

^{1 f:} / 18 90

C.I. - Acid Red -; 81- CI. "Acid Red . 83 CI, Acid Violet Ii] - CI ... Acid Violet .- ■■ ΊΑ CI. AcM Violet 36 CI. .. ■■ '■ sorry Violet 42 CI. Acid Blue 23 CI. Acid Blue 112 CI ₄ Acid bellow 42 CI. Acid screen . 25th

and'

-... '"polyamide fiber-

It has been found that these acid dyes are hardly absorbed into a substance from a dye medium having a pH greater than about 5 with a component having a content of less than 5 × 10 -4 mol / g of terminal amino groups. The simple use of an acid dye with a color absorption ratio greater than 1/20, bel «- for example from CI. Acid Orange 67 * Cl. Acid flower 127 and CI. Acid Red 195, cannot take advantage of the invention. - - \.

The pH of the dyeing medium to be used in the process according to the invention is critical and should be adjusted to between 4 and 4. In order to achieve an excellent coloring effect, it is preferred in most cases to file the pH of the coloring medium to about 5 to 7%. If appropriate.:. Auxiliaries:. *: For example addition products .. (adducts.) From 2: to 30 mol ₁ S, preferably 5 to 15 mol. Ethylene oxide and aliphatic primary amines with 12 to 18

- ίο - · *. ■■ "

Carbon atoms, e.g., laurylamine, stearylamine and Oleylamine, used together, can also produce the desired multicolor effect from a coloring medium with a pH of 4.3 or less, but not less than 4, can be obtained. The ability to increase the multicolor effect, that of the adduct of amine and Ethylene oxide is actually surprising and unexpected after it was known that similar addition compounds of an aliphatic acid amide with 12 to Carbon atoms and ethylene oxide hardly have the ability to Has an increase in a multicolor effect.

According to the general tendency, an acid dye from an acid medium is more strongly absorbed by a polyamide fiber with a higher content of terminal amino gases than by a polyamide fiber with a lower content of terminal amino groups. For example, a polyamide fiber with 5 χ 10 ~ is -> to 7 χ ICT * mol / g of terminal Amtogruppen of an acid dye, leich'ter colored as a polyamide fiber, / g of terminal amino groups containing less than 5 χ 10 ^ Mol. Therefore, when a polyamide fabric formed from these two kinds of polyamide fibers is dyed using an acid dye useful in the method according to the invention, even if the dyeing medium is as low as pH

^ / 1 8 9 G

1618845

5, it is to be expected that the fiber with a higher content of terminal amino groups in the fabric will be dyed better than the fiber with a lower content of terminal amino groups and that the desired multicolor effect will be obtained. ¹ So tM this expected phenomenon, it has been found that a remarkable multicolor effect cannot actually be achieved using a medium with a |> fI value as low as j5. On the other hand, if the pH of the coloring medium is adjusted to, for example, 5 in accordance with the conditions of the invention, multicolored coloring with a sharp contrast can be obtained from the same material to be colored. This fact is also very surprising. -

The coloring medium to be used according to the invention can desirably another acid dye and / or disperse dye in addition to the acid dyes mentioned above * Preferably, the dispersing dyes used in the process according to the invention are those which are made for dyeing synthetic polyamide fibers. Examples of this are CI. Disperse Yellow 3, CI. Disperse Yellow 5 * CI. Disperse Red 4, CI. Disperse Orange 21 and CI. Disperse Blue ^. These dispersible dyes dye polyamide fibers well, regardless of their content of terminal amino groups.

/ 1 S90

1819645

According to a particular embodiment of the invention, the coloring medium can be a push button or a padding liquid. These dyeing media preferably contain about 2 to 10% by weight, based on the medium, of an organic solvent, for example methyl alcohol, ethyl alcohol, butyl alcohol, cyclohexanol, diacetone alcohol, tetrahydrofurfuryl alcohol, glycerine, ethylene glycol, diethylene glycol, methyl cellosolve, acetone, methyl ethyl ketone , N-methyl pyrrolidone, cyclohexanone, a diethyl ester of tartaric acid, an ethyl ester of benzoic acid and allyl acetate. It has been found that these organic solvents have an effect of increasing a multicolor effect of the finished products to a remarkable extent. Among these organic solvents, those with up to 12 carbon atoms and with at least 2 alcoholic hydroxyl groups per 6 carbon atoms are advantageously used. In particular, polyhydric alcohols such as glycerine, ethylene glycol and di-

Pastes are semi-emulsions

of the oil-in-water type in which a thickener, e.g. Sodium alginate and locust bean gum, as Film-forming agent is used. The dyes can usually be used in these dyeing media in an amount of about 0.1 to 3.0 weight percent.

10 ^r V189 0

The staining medium can be an aqueous staining liquid. exist, in which the dyes in an amount of about \ 0.1 to 3> 0 % ow ^. be used. / '-

The dyed textile is sewn in the usual way and provided with a finish.

The invention is illustrated below by way of examples

explained in more detail. ■

⁷ ... ' Example 1 ^:

A mixed fabric (union fabric) with a throwing master made from a poly-capronamide (nylon 6) fiber material (I) with a content of terminal amino groups of 9 * 8 10 * ^ mol / g and a poly - ε-capronamide (nylon 6) fiber material (II) with a terminal amino group content of 1.9 10 mol / g was obtained using Cl. Acid Blue 45 with a dye absorption ratio of 1: 4 ^ with a printing paste of the following composition ^ prints: -; .-- ~ ^ --_ -: -— ^^ ^a °°° ^gggs °° ^{g =} ^ /

Dye CJ, Acid Blue.> 5 '0.5 part sefflie emulsion paste der. Oil-in-water type *); 60 parts of glycerin. ":""'/ .. β parts of water. ^: ;. 33.5 parts

100 parts

"'" •' The semi-emulsion paste of the oil-in-water Artbesfcand from a mass obtained by mixing the following components (A) and (B) in a ratio of 70:30.

o / 1890

- u-

Polyoxyethylene lauryl emulsifier

ätherart j5 parts

Paraffin series hydrocarbon 60 parts

Water · ". 37 parts

■ · ■■■■■ - 100 parts

(B)
A 6% sodium alginate solution in water

The fabric was printed with the printing paste of the specified composition, the pH of which was adjusted to 7, dried and ^{treated with steam at 100 °} C. for 20 minutes.

In the coloration obtained, the Paser (I) was blue, while the Paser (II) remained white without being colored.

If glycerin was not used, the hue became "outer '' extreme coloration blue with a slight difference in color, the dye absorption ratio of (I ) to (H) being 2: 1. When the pH of the glycerinized printing paste was set to 3 was set, a coloration with a sharp contrast of (I) to (II) was not obtained,

Example 2

The same mixed fabric as in Example 1 was under Use of C.I. Acid Red 18 with a dye absorption ratio from 1:29 and CI. Acid Yellow 127 with a color

/ 1 8 90

material absorption ratio of 1: 3 as dyes with a Printing paste of the composition given below be-.printed ..-. "'.

Components parts

Dyes CL Acid Red l8 1, , 0 C.I. Acid Yellow 127 32 Water " - 60 Semiemulsion paste of · * '■ · -
Oil-in-water type as in Example 1 6th Diethylene glycol

■ ■ loo

After the fabric, with the printing paste of the specified

Composition, the pH of which was auCX_eingeäiBll £ wordelr ~ - ^^

was printed, it vmrde dried and steamed at '100 ⁰ C for 20 minutes. ■

DiTe ^ obtained in the fabric with a checkered or cube pattern Coloring resulted in an orange ^ Fä ^ eT ^^^ I ^^ and ^^ a yellow Fiber (II). Vienn, however, did not contain lathytene glycol, were two stains with a sharp contrast between (I) and ^ d (II) not received.

example 3

The same cloth sample as in Example 1 was obtained using GI-Acid Blue 45 with a dye absorption ratio of 1:43 and G-.I. Acid Yellow 40 with a dye absorption ratio of 1: 5 printed as dyes with a printing paste of the following composition.

1C b / 1890

Components water Parts Dyes C.I. Acid Yellow 40 6 $ sodium alginate solution in
water 0.5 C.I. Acid Blue '45 Methylcellosolve 0.5 43 50 6th

100

After printing, the fabric sample with the printing paste of the composition given, Deen pH was adjusted to 7, it was dried and steamed for 20 minutes at 100 ⁰ C.

The result was a two-tone fabric with a checkered or cube pattern made from deep green Fiber (i) and a yellow fiber (II). Without that However, the addition of methyl cellosolve failed to produce a double color with a sharp contrast between (I) and (II). ■

".-- ■■ Example k

A mixed fabric (union fabric) with a check or cube pattern, made of poly- £ -capronamide (nylon 6) fibers with a content of terminal amino groups of 10.1 χ ΙΟ "" ⁵ mol / g, 5 ₄ · έ χ ΙΟ " ⁵ % 1 / g and 1.8 χ ΙΟ" ⁵ mol / g was formed, was untek, - ¥ erwendüng of CI Acid Red 18 with a Fari-

-ΐί '

stoffabsorptionsvqrhältriis yOÄvii'29 and ei «Disperse pime J as dyes with a printing paste of the following composition printed »

- ^T0: > / 1890

1019645

Components parts

dyes C, I, acid red 18 1

G. I, Disperse Blue 3 0.5

Diethyl tartrate 6

Oil-in-water type efflulsion paste

as used in example 1 60

Water . ) 32 «5

Λ 100 \ V

After the fabric sample had been printed with the printing paste of the specified composition, the pH of which had been adjusted to 7, it was dried and ^{treated with steam at 100 0} O for 20 minutes.

A three-colored mixed fabric of deep red, purple and blue preserved. Without the addition of diethyl tartrate no sharp contrast three-color effect was obtained

Example 5

The same swatch as in Example 4 was taken under Use of O.I «Acid Blue 23 with a dye absorption ratio from 1:50 and CI. Acid Yellow 111 with a dye absorption ratio of 1? 8 as dyes with a printing paste of the following ■ led composition printed.

s / 1890

- ta -

Components parts

C.I · Acid Blue Dyes 25 1

C.I. Acid Yellow x 111 0.5

Glycerin. 6th

Oil-in-water type emulsion paste

as used in example 1 60

Water 32.5

100

After printing the swatch with the printing paste the above composition, the pH of which was adjusted to 7, it was dried and washed with water

treated steam at 100 ⁰ C for 20 minutes ^ -

There was a staining of the mixed fabric with three Colors of blue, green and yellow are preserved but if none Glycerin was used, no three-color effect with a sharp contrast was obtained. '

Example 6

A poly-fc'-capronamid- (nylon 6) thread yarn .j (tithe 70 den, 24 baths) with an amount of terminal aminol groups of 9.5 x 10 MolYg (I) and a poly-g-capronamid thread yarn (70 denier and 24 threads) with an amount of terminal amino groups of 4.9 x 10 ~ ⁵ mol / g (II) and a poly-fc-capronamide thread yarn (70 denier, 24 threads)

—5 with a terminal amino group content of 2.0 xJO

Wl

1OE: 15/1890

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were stretched to a tricot fabric, in which the three types of yarn were present in a country stripe pattern. "1Dg of this fabric was immersed in a dyebath of the following composition, the pH of which had been adjusted to 4.3 with acetic acid," Kömperenten . * Kemge "." .. "_". · -. "

CIo Acid Blue 23 dye
(with a dye absorption ratio of 1: 5.0 ") 1 $ ö.w _o f.

Auxiliary agent, adduct of

Stearylamine with 10 moles of ethylene oxide 2 g

Water "'300 cnr

The Pärbebad was heated to 98 ⁰ C and held TiriXhrend about 1 hour at this temperature. At the end of this period, the dyed cloth material was removed from the bath, washed and dried. The coloring thus obtained exhibited an excellent three-color effect as shown in the table below _β

For comparison purposes, this dyeing process was repeated on its own, with no auxiliary agent being added. The three-color effect of the dyeing obtained in this way was poorer _o _ ■: ■ -: ■ -.- '..; ^: . ... '·:'"·'. ·.

do

Tabel

with aids without tools Polyamide ^
threads i » dye- °,
absorption color & Dye absorption I.
II
III 65 deep blue
31 medium blue
4 light blue 38.5
33.0
28.5 Example 7

The dyeing was carried out in the same way as described in Example 6, except that the dye C, Io Acid Redy with a dye absorption ratio of 1:25 in an amount of 0.3 $ (o, w ₀ f.) And C ₀ I ₀ Disperse Y «llow 3 in an amount of 0.1 $ (o _{o wf) #} and an adduct of stearylamide with 5 mol of ethylene oxide in an amount of 2 g were used as an aid.

Fibers I, II and III were colored with completely different colors, namely red, orange and yellow «Without the addition of the aid there was none clear three-color effect as obtained in the case of using the aid »

Example 8

The staining was carried out in the same manner as in Example 6 described, but where all dyes G.I. Acid Red 58 with a dye absorption ratio of

¹⁰

/ ¹ 8 9 0

1618645

ti.47-i Q of a set of $ 0.5 ("·" * £.) and CoI. Disperse Blue 3 in an amount of 0.2 # (o <, wf _β) and as an aid were an adduct yon Iiaurylamin with 10 MolÄthylend · g used in an amount of 2 '

The polyamide fiber I ₉ II and III in a completely different color from violet were deep red _r and "stained blue, without the addition of the auxiliary ^ edoeh was such a staining with a sharp contrast, as in the case of using the tool not obtained

If instead of the addition compound of the amine with ethylene oxide the same amount of the following auxiliaries ■■■■■■ :; C ₁₂ H ₂₅ O (CH ₂ CH ₂ ) ₁₂ H,

- (CHpCHpO) ^ H CH ₂ CH ₂ OJyH.

12 ^H 25 "

(x ■ + ■■ y a IQ),

O ₁₇ H ₅₅ CO - Ν - CH ₂ CH ₂ -, SO ₅ Na ■ OH *. '·'. '"■■

IO £.

89a

were used, there was no remarkable three-color effect. It is surprising that | while the addition product The use of laurylamide and 10 moles of ethylene oxide does not provide a remarkable contrast dines addition product of laurylamine with 10 moles of ethylene oxide leads to the achievement of a remarkable contrast,

Example 9 ■

A mixed spon yarn made of 3 types of polyamide fibers of polycaprolactarn (or poly ^ capronamide - nylon 6) with a content of terminal amino groups of 9.5 x TO mol / g (I), polyamide fibers (nylon 6) with a terminal amino group of 4.9 * 10 mol / g (TI) and polyamide fibers (nylon 6) with a terminal amino group content of 2.0 χ TO "* ⁵ mol / g (III) were woven into a fabric 10 g of this fabric were under Boiling for 1 hour in 300 cm of a dye bath with an oil content of $ 0.3 (o.vr.f.) of CI Acid M 30 with a dye absorption ratio of Ii25 and $ 0.1 (dwf)

with acetic acid

of Cl,% sperse Yellow 3, the pH of which is adjusted to 6.0 had been stained ο

A pepper-and-salt pattern was used obtained, d * i a double coloration in completely different

+) of the dyebath

different colors, n ^ alich one red fiber of (Γ), one orange-red fiber from (H) and a yellow fiber from (III) exhibited. ~

No distinct color effect was obtained in a dye bath whose pH was adjusted to 3.4.

^ Example 10 .

The same fabric as indicated in Example 9 was dyed in a similar manner as in Example 9 in 300 cm of a dye bath, the pH of which had been adjusted to 6.5 with acetic acid, the dye bath being 0, 2 $ (■ OoW.f.) "By CJ, Acid Blue 23 with a dye absorption degree of 1:50, 0.1 $ (owf) by C ₀ I. Sorry Yellow with a dye absorption degree of 1:24 and 0.1 $ (bwf) from 0 * 1. Disperse Orange 21 contained

The fiber (I) colored green, the fiber (II) was dark green and the fiber (III) beige colored _s or three fibers were dyed in quite different color and there was a coloring of a pepper-and * -salt pattern received · - ■ -., '..

When staining in a Farbiiad with a pH of 3.4, the fabric received overall a similar coloration of dark green and it became none different or different color effect obtained

10

■ /; "! 8 9 0

Furthermore, if instead of the motion of Example 9, a other fabric consisting of a blend-spun yarn made of polyamide fibers (nylon 6) with a content of terminal amino groups of 4.9 × 10 mol / g and polyamide fibers (Nylon 6) with a terminal amino group content of 6.1 10 mol / g was obtained in the stated Dyebath was dyed after adjusting the pH value thereof to 6.5, the fabric as a whole became similar Coloring of dark green and no different color effect was mistaken »

Example 11

After false twisting each of a polyamide thread yarn (nylon 6 -Poly-f-Oaprolactam) with a titer of 70 denier and 24 threads and a content of terminal amino groups of 9.8 x, 10 ^- mol / g and a polyamide thread yarn (nylon 6 ) with a titer of 70 denier and 24 threads and with a content of 5.2 ac 10 " ⁵ mol / g of terminal amino groups, these were then ply with an upper twist of 100 T / m (twists / m) Yarn knitted or knitted, 10 g of the knitted or knitted fabric were in 500 cm of a dye bath, the pH of which had been adjusted to 5 with acetic acid and the 0.3 $ (o "w * f,) of Cl, Acid Red 37 with a dye absorption ratio

S / 1 8 9 0

of 1s 25, 0.1 $ (owf ») from GI disperse yellow J5 and as a dispersant 1.0 $ (o, w« f ₀ ) of an addition compound of nonylphenol with 2Q mol · The Färbefltiasigkeit was heated to 98 ⁰ C and held at that temperature for 60 minutes this case, a very nice fabric with a pepper-and-salt sample was obtained from orange tint "

Example 12

10 g of a mixed fabric with a checkered or diced pattern made of a polyamide thread yarn with terminal amino groups in an amount of ton 5.2 χ 10 mol / g and a ... polyamide thread yarn with a content of terminal amino groups of 2, ß χ 10 mol / g (in each case a nylon 6 fiber material) was placed in 500 cm of a dye bath, the pH of which had been adjusted to 5 and which was used as the dye 0.1 ß ₍ I, Acid

+) "Ä ^lelt

Red 18 'with a dye absorption ratio of 1 s29 \ ent Stained at 98 ° for 60 minutes

The yarn (I) remains white without being dyed, while the yarn (II) was dyed in bright red »

For comparison plums, this fabric became one of the same Conditions as stated above with the, amendment colored that the pH of the dyebath with formic acid set to 3 nmrde «

15/1890

Daa ratio of dye absorption of yarn I to the dye absorption of the yarn II in the obtained The color was 2.5s1 and the two-color effect of the color was very bad o -

103815/1890

Claims (2)

Claims; . 1, method of making multicolored (multiple colored), synthetic polyamide fabrics, characterized in that one consists of a synthetic polyamide fabric at least two polyamide fibers fit a different one Content of terminal amino groups, from the group of synthetic polyamide fibers or threads with a content at terminal amino groups from 5 χ 10 "^ to 7 χ 10" " Hol / g, synthetic polyamide fibers or threads with a Terminal amino group content of less than -5 x 10 Mol / g and synthetic polyamide fibers or threads with a retention of terminal amino groups of more than 7 x 10 * "^ mol / g with a pH of 4 to 7 held staining medium containing an acid dye with a Contains a dye absorption ratio of less than 1/20, brings in touch, with the difference in salary at terminal amino groups at least 2 χ 10 * "MoIj ^ g and the dye absorption ratio is the ratio of dye absorption of a synthetic polyamide fiber with einöm content of terminal amino groups of 5 x. 10 ^ to 6 χ 10 - * .. mol / g when immersed in an aqueous Dye bath with a content of $ 2 o.w.f. the acid dye, ORIGINAL IMSPECTSD 10S-15/1890 1819545 the / ert at a pH of 7 V is gehaltai to that of the same polyamide fiber when immersed in a Farbba'd, which is apart from the _f gena'nnten aqueous dye bath, wherein the pH value is maintained at 5, equal to , represents. 2. The method according to A _ns p _ruG h 1, characterized in that a dyeing medium is used which, in addition to the acid dye, contains a dispersing dye for polyamides. 3o method according to claim 1 or 2, characterized in that that an aqueous coloring medium is used as the coloring medium, which is also an addition compound of ethylene oxide and an aliphatic primary amine with 12 to 18 carbon atoms contains as an aid » 4ο method according to claim 1 or 2, characterized in that that a printing or padding medium is used as the coloring medium, that is also an organic solvent with up to 12 carbon atoms and at least one alcoholic hydroxyl group per 6 carbon atoms as auxiliary contains » : -S / 1890