DE2047686B2 - Synthetic composite thread with special dyeability - Google Patents

Description

dyes, busic dyes, acidic dyes, acid mordant dyes, metallized acid dyes π. Hir / dyes, development suppliers (Azo - [.-, rbsUiflOn) and direct dyes. Furthermore, in the case of polymers which contain a metallic auxiliary / dye compound, new types can be used Furb-ioffcn are used, the jls "cnelate dispersion dyes" are designated.

The polyesters usable for this invention can include modified polyesters those with basic dyes are dyeable. Such dyeable with basic dyes polyesters can, for. B. modified polyesters containing at least one unit with one or more sulfonate groups in the lesser Share included.

The polyamides usable for this invention can be modified polyamides, those with basic FJ'bstoffen are dyed and which are a polymer component containing a homopolymer or copolymer of an aromatic olefinic compound can be which one or more sulfonic acid groups some of which form salts with an alkali metal or an alkaline earth metal can and the remaining part of the group can remain in acid form or the sulfonic acid group with ammonia and / or an amine can form a uniform or a mixed salt.

The polyolefins and polyesters useful for this invention can be modified polyolefins or polyesters which are dyeable with chelate disperse dyes, the polyolefins from about 0.1 to about 5.0 percent by weight of a higher fatty acid salt or a chelate compound of at least one transition metal such as Nickel contain zinc, chromium and copper. Such modified polyolefins or polyesters can be colored with the specific chelate disperse dyes with high color fastness. _dj

Through the USA.-Putentschrift, 984 634 and de Beleische Patent 614, 76 is already e η He. steliunnsverfahren for modified Polyolehne he become known, which contain a Metaüverb.ndung and .o the chelate disperse dyes.

The for this invention usable n ^ odüUerten polyolefins can after> »· ^™ ε £ Patent n the · * 587 008 and in Japanese Patent procedures described 18 574/1963 font ago ^ e will sets and dyeable with acid dyes sem The embedding and island components of the composite thread according to the invention can contain matting agents such as titanium dioxide and . ^^^^ an absorbent for ultraviolet radiation em ao anti-weathering agent or a warm rod.

hs .st required door erfindungsge.näßen the composite yarn, that the Eir.bettkomponente e.ne iransparenz of 85% or more has to ensure that the Färb η effect of the dyed island components fully visible, the percent transparency after - ^A, method (1905) determined at

nents is composed, which are different from each other. Have coloring properties.

Tabel

No. of
combination

Embedding components

polymer

1 Polyester, col bar with acid Dyes 2 Nylon 66 3 Nylon 6 4th Polyester, col cash with basic Dyes 5 Polyesteramide 6th Polypropylene, colorable with Acid color fabrics 7th Polyamide, col cash with basic Dyes 8th Polyester ba »'with basic Dye s ♦ 1 each time 10 «

Content of

Color

absorption sites *)

2.0

4.0 3.0 1.0

2.0

1.5

2.0

0.5

Type of dye used

Acid dye

Acid dye. Acid dye. Basic dye

Acid dye acid dye

Basic dye

Basic dye polymer

polyamide

Nylon 6

Nylon 6

Polyamide, can be dyed with
basic
Dyes

polyamide

polyamide

Polyamide, can be dyed with
basic
Fai materials

Polyester, can be dyed with
basic
Dyes

Island component

Content of color absorption points *)

5.0

7.0

12.0

5.0

8.0 7.0

6.0

Type of dye used

Acid dye

Acid dye. Acid dye. Basic dye

Acid dye acid dye

7.0 basic color

material

Basic dye

This essential requirement of the invention can be met in two ways, as in is described below. First of all, the composite thread according to the invention should consist of an embedding component, which to some extent can be colored with a certain kind or kinds of dyes is, and be composed of island components, which to a greater extent than the embedding component with of the same kind or kinds of dyes as the embedding component are dyeable.

In this case, it is advantageous if the island component polymer material has a proportion of color absorption sites which is ^{greater by 2 · 10 5} mol / g than the proportion of the embedding component polymer material. In Table 1 some examples of the various combinations of polymer materials for the embedding and island components and the proportions of color absorption sites are given.

The single and the island component may be made from polymer blends which have a respectively at least 2 x 10 ^-5 mol / g different content of dye absorption sites.

The essential prerequisite for the different dyeability of the composite thread according to the invention can be met if the embedding component and the island components each with certain Kinds of dyes are dyeable which are different from each other, and if they are with the for each other component suitable type of dye or /. essentially not colored by the appropriate types of dyes can be.

Table 2 shows various combinations between the bed component polymer material and the island component polymer file ial.

Table 2

Station wagon
nation Embedding component Applied dye type Island component Applied dye type No. Polymer component Acid dye Polymer component Basic dye 1 polyamide Polyester, can be dyed with Disperse dye basic dyes Chelate dispersion 2 polyester Polyester, a metal dye connection ent Disperse dye holding Spun-dyed 3 polyester Chelate dispersion polyamide Disperse dye 4th Polypropylene, one dye polyester Metal connection containing Basic dye Spun-dyed 5 Polyamide, can be dyed with Polypropylene basic dyes No Disperse dye 6th Polypropylene Metallized acid polyamide Acid dye 7th polyamide dye Polypropylene, dyeable Acid dye with acid dye Chelate dispersion 8th Polypropylene, dyeable Polypropylene, one dye with acid dyes Metal connection Basic dye containing Spun-dyed. 9 Polyamide, can be dyed with polyester basic dyes Acid dye Spun-dyed 10 Polyester, can be dyed with Polypropylene Acid dyes

The island components of the composite thread according to the invention can be made by suitable choice of the spinning device produced in the desired distribution with the desired titer and the desired number will. This is a great advantage of this invention in view of the fact that composite spinning at a ratio of the dispersion component, based on the dispersed component, between 40:60 to 60:40 is unstable and that the quality of the composite thread so spun is uneven.

In view of the aforementioned coloring effects and color fastness, it is preferable that the island components of the composite thread according to the invention with regard to the cross section of this thread primarily are arranged distributed in the outer area.

When the island component is made of a polymer that has a great affinity for the used Possesses dye and uses it up to a large extent, the number of island components should be 4 ( or more in order to obtain a high uniformity of coloring.

By forming the embedding component and the island components from polymers that differed have borrowed elasticities, the island-like Ver bund thread a better stiffness or softness he hold than it is with the conventional composite thread of the covered core type is the case. If di <elasticity of the island component is greater than de Embedding component, then the composite thread obtained according to the invention has a greater rigidity than the conventional composite thread of the covered core type, in which the core and Hüllkompo each made of the same polymer as the island

and Linbett component and the ratio of the cross-sectional area of the core component, based to that of the shell component, is the same as that of the island components, based on the embedding component.

If, on the other hand, the elasticity of the island component is less than the elasticity of the embedding component, then this has the consequence that the island-like composite thread has a greater softness than the conventional one Covered core type composite filament.

The invention is explained using the following example:

example

An island-like composite thread bundle of 50 denier / 24 individual threads was produced by melt-spinning 50 parts by weight of a nylon 66 polymer for the embedding component and 50 parts by weight of a nylon 6 polymer for the island component at a temperature of 285 ^° C. and through Draw the melt-spun composite filament with a draw ratio of 3.4.

The nylon 66 polymer of the embedding component had an end amino radical content of 4.5 x 10 " ⁶ mol / g and a transparency of 89.1%; the nylon 6 polymer of the island component had an end amino radical content of 6 , 5 · ΙΟ " ⁶ mol / g. The composite thread thus obtained had forty island components distributed in the edge part of the composite thread.

For comparison, a sheathed core type composite thread bundle (comparative example) of 50 den / 24 individual threads made of the same polymers as those of the aforementioned composite thread bundle with island-like structure. The covered core type composite filament thus obtained comprised a nylon 6 core component concentrically embedded in a nylon 66 sheath component was.

Tubular knitted fabrics were produced from the thread yarns. The knitted fabrics were dyed under the following conditions.
^p arbzusammensetzung:

Irganol yellow 4 GL (* 1) 1.5% of the thread weight.

Xylene real blue PR (* 2) 3.0% of the thread weight.

CH ₃ COOH 1.0% of the thread weight.

Liquid ratio 1: 100

Temperature 100 ° C

Time 60 minutes

Note: (*) Trade name of an acid dye.
(*) Acid dye.

The dyed knitted fabrics were then placed in hot Washed with water, rinsed with cold water and dried ao at room temperature. The received ge dyed knitted fabrics of this example and the comparative example were subjected to a color fastness test pulled. The results are shown in Table 3

»5 Table 3 Comparison
example example 1: 1
insufficient
evenly Weight mixer
ratio of embedding
components
Island components
Uniformity of the
35 dyed fabric 1: 1
sufficient
evenly

For this purpose 2 sheets of drawings

$ 09 586/32

Claims (1)

With regard to a large optical length p. . wedge of the colored embedding components is intended to bed components have a high affinity for acidic and / or basic dyes. So that Synthetic composite thread of special dyeing components: and the island component an availability with an island component, which have different dyeability, should be in the form of at least: ten thread-like vonein-ins' components have an affinity for dyes, others independently in the longitudinal direction of the composite which the embedding component is present in the vesuiilichen non-filamentous structure, and can also be colored or at least not to the same extent. an embedding component that is one of the island io The invention is explained in more detail below with reference to component different colorability in several figures. Show it
sits and which embeds the island component, that F i g. 1 A and 1 B, 2A to 2G, 3 A to 3N and 4A characterized in that the Em to 41 cross sections of the composite bed component according to the invention are at least 85% transparent, is present. 15 F i g. 5 is a side view of the invention Composite thread, Fig. 6A to 6E cross sections of the invention according to the composite thread according to FIG. 5. In Figs. IA and IB are cross sections of the 20 composite thread shown with an island-like structure. The island components 2 each have the same The invention relates to a synthetic size and are essentially evenly distributed in the embedding component 1 in the bundle thread, which is particularly dyeable with an island. In the Auskomponente which are guide die in the form of at least ten of FIG. IA all Inselkompofadenartigen anabhängig components from each other in the longitudinal 25 2 in the direction of the Einbettkomponente 1 completely composite thread extending structures embedded. On the other hand, in the present embodiment, and with an embedding component, which has a shape according to FIG. rend other island components 2b completely in the Composite threads of this type are embedded by the French 3 ° bed component 1. Patent specification 1 513 5Sl became known. They assign the F i g. 2A to 2G show different transverse Compared to mixed threads and composite threads with sections of the composite thread with an island-like structure, enveloped core advantages »in terms of elasticity, in which the island components 2 each have the same Strength, curl ability, etc. Is the material sized and in the embedding component 1 of the island component from which the embedding component 35 are unevenly distributed. selected differently, the two components have. In the embodiment according to FIG As a rule, numerous island components of the same size can also be colored differently on. in an embedding component of a hollow fiber im It is arranged, for example, in the book by R. Hill, in a substantially more evenly distributed manner. "Fibers from synthetic polymers", 1956, p. 440, 40 In the embodiment according to FIG became known, transparent threads or island components in an irregularly shaped Threads with different optical properties are arranged in a distributed manner. Both place. Cross-sections of Figures 3C to 31 and 4A to 4J The invention is based on the object, threads are three or more components 1,1 a, 1 b, 2, 2a, 2b, with special colorability or iridescent 45 3, 4, 5 included. To create a color effect that has a great color fastness. 5 and 6A to 6E is a further possess speed and uniformity. The composite thread guide shape of the composite thread according to the invention should show a special depth of color or a dazzling one. Figures 6A to 6E show cross sections Have mixed color or speckled color. of the composite thread with an island-like structure The object is achieved according to the invention in that 5 ° F i g. 5 along the lines AA, BB, CC, DD, EE. that the embedding component is at least 85% in the case of the one shown in FIG. 5 are composite thread shown transparent. 14 island components 2 in the lower part of the embedding Due to the high transparency of the embedding component 1, it is arranged in an unevenly distributed manner. As component is the color of the colored island compo- in the fig. 6 A to 6 E shown, vary in longitudinal nente clearly visible. If the transparent embedding direction of the thread becomes that in embedding component 1 component with the same color as the island embedded island components 2 periodically component colored, then the composite thread clearly has its position. a deep shade. If the transparent embedding The embedding and island components of the invention component colored with a shade that corresponds to that of the composite thread can be made from homopolymers of the island component is different, then the 60 _{o of} the copolymers of polyamides, such as polycapro- Composite thread a mixed color or a speckled lactam, polyhexamethylene sebazinamide, poly-m-xylene Color on. In all cases, the sight adipic acid amide and polyhexamethylene adipic acid make the color of the colored island component amidisophthalamide, also polyesters, such as polyethylene and the dependence of the observed hue on terephthalate, and polyolefins, such as polyethylene and a special iridescent polypropylene 65 can be made to match the viewing angle. Color effect achieved. It is essential that the island components and the embedding components component consists of at least ten individual threads, component of the composite thread according to the invention can so that a sufficiently large colored area is obtained. with the conventional dyes such as dispersion