DE1288239B - Process for the production of swirl-bulked polyamide continuous yarn - Google Patents

Description

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The invention relates to the production of textured front. the polycondensation are mixed. To Yarns, namely voluminous continuous yarns, the finished polycondensation can be the mass, with pre-metallized and acidic dyes like-d. H. let the mixture of polyamide and polyethylene be colored. glycol, shape it into threads and then twist them

Bulky continuous yarns are known, e.g. B. such 5 stretch and texture.

made of polyamides. These yarns are used for many purposes. You can also use the polyethylene glycol directly

suitable; however, it is difficult to mix a uniform one with a previously prepared polyamide. Achieve staining, especially if the yarns This is an especially good way to make a renach the recently developed methods of vortex action between the polyamide and the polyglycol nozzle treatment can be made voluminous, such as keeping io as low as possible and also around a thersie z. B. in US Pat. No. 2,852,906 to prevent the degradation of the polyglycol. That are written. The polyamide yarns can be made from a mixture of thread-forming polyamide and polyester Vortex treatment with both pre-metallized ethylene glycol can verals from the melt in threads Color evenly with acidic dyes, be spooned, preferably immediately afterwards but the staining becomes uneven when the mixing takes place in the melt. The after yarns first textured and then colored. The following treatment stages can be the same Although the texturing process may be carefully directed as described above, As an additive for polyamides, the poly rings are used Changes in terms. If the ethylene glycols with OH end groups are used, and Yarns after leaving the vortex nozzles according to FIG. 20 are in particular those from a molecular tufting technique incorporated into carpets and weighing from 6,000 to 30,000. These are the poly-pre-metallized and acidic dyes colored amide added in a concentration of 3 to 25%, a streaky appearance is obtained. In order to carry out the experiments described below

To reduce this difficulty, it was necessary up to now - the colorability in a photometer of the type Manoeuvrable, self-leveling disperse dyes 25 »Differential Colormaster Colorimeter, Model No. 4 « turn to. However, these dyes have largely determined that the Manufacturers Eng. and Equipt. only a relatively low lightfastness and Corporation, Hatboro, Pa., USA., is produced, are therefore not desired. Here, the dyeability, i.e. H. the staining

Accordingly, it is the main object of the invention to speed up the yarn with the dyeing speed and volume Creating continuous polyamide yarn was compared to a control sample. Be there which is combined with pre-metallized and acidic color test sample and control sample colors fabrics evenly. Liquor colored when boiling. The staining speed

It was now. found that uniformity is then determined by using the reflective stainable, Eddy-nozzle-bulged polyamide endless capacity of the colored samples in the photometer Yarns can be produced if you use polyamide, which is 35. Big differences in the staining 3 up to 25 percent by weight of polyethylene glycol with speed that is due to variations in the texturing chain ends Hydroxyl groups and conditions are created that form color molecular weight of at least 1000 in even stripes in the finished carpet, contains moderate distribution, melt-spun into threads,

these threads are drawn and by means of vortex nozzles 40 example

treatment textured.

To carry out the texturing, the polyhexamethylene adipamide, which contains 5% polyethylene in general, has a molecular weight of 20,000 mixed in with the glycol in US Pat. No. 3,005,251 follow the procedure described. The bundle of thread contains becomes a 68-thread 1040-denier endless Endless filaments are first fed to a preheater 45 bundle of filaments with a round cross-section and then melted through a vortex nozzle with one. The thread bundle is stretched and Speed of about 45 to 1100 m / min, then textured. Another bundle of thread is made an excess of the feed rate polyhexamethylene adipamide produced alone, about the discharge speed in the range of Each of these thread bundles is in a non-

30 to 100 per cent. Passed. The nozzle body is held on a 50 adjustable vortex nozzle cartridge for Dampfbehand temperature between about 180 to 300 ⁰ C, lung textured, as it is in the USA. Patent and the steam is described in the nozzle with a pressure '3,005,251. The thread bundle is inserted between about 2.8 and 18.2 atmospheres. This is preheated by passing it through a tube arranged at the inlet preheating temperature in the range from about 140 to the side of the vortex nozzle, through which the steam flows in countercurrent at 260 ° C. The Textu-

Suitable polyamides are those melting occurs at a rate of about spinnable synthetic linear polyamides made from 1006 m / min, with a 40% excess of Monoaminomonocarboxylic acids or their amide feed rate via the discharge forming Derivatives or from suitable diamines rate and at a temperature in the steam and Dicarboxylic acids or amide-forming derivatives 60 preheater tube of 240 ° C. It becomes more nozzle temperature Connections are made. The temperatures applied in the range from 185 to 295 ° C, position of such polyamides is known, for example, at each of these temperatures, the texturing from U.S. Patents 2,071,250, 2,071,253 at a vapor pressure of 2.8, 3.5, 4.2, 4.9 and and 2130 948. 5.6 atm. Both yarns have a similar one

When making the products according to the invention 65 and acceptable bulkiness. Each textured könenn polyethylene glycols, which are used in the manufacture of yarn using the tufting technique in smooth-meshed of the polyamide through polycondensation is not incorporated into re-pile carpets and with a vormetalliaktion occur, colored with the monomeric starting material based dye (C.I. Acid Red 182).

Claims (1)

3 4 From each of the samples, 4-fold, observed changes in the nozzle carpets are made in the following way: The textured yarn receives temperature, compared to carpets made of Polyhexa-59 Z-twists per meter. Three of the threads obtained are methylene adipamide alone. In contrast to this, the feed yarn for this texturing can be pinned and twisted with 79 S-twists per meter. The yarns are dyed completely evenly according to the tufting technique 5, both with and without polyethylene glycol, with dyes metallized beforehand in a loose pile carpet of a raw weight, of 780 g / m ² using a jute underlay, while carpets made from the textured poly of 407 g / m ^{2 are} processed . In the case of hexamethylene adipamide yarns, the raw carpet is dyed evenly without the addition of poly-82 ⁰ C in a solution of a commercially available detergent ethylene glycol with pre-metallized dyes, consisting of 16% sodium lauryl sulphate, 6% ¹⁰ , carpets made of alkyl alcohol sulphate, 30% sodium polyphosphate, 17% the textured polyhexamethylene adipamide yarns with sodium pyrophosphate and 31% sodium silicate and a content of polyethylene glycol, surprisingly sodium sulfate, washed; the concentration of the solution uniformly pre-metallized with dyes is 0.25%, based on the weight of the dyed. Tissue. This treatment is carried out for 30 minutes on 15 carpets made of textured polyhexamethylene adip- a solution to tissue ratio of 40: 1. amide yarn, which contain polyethylene glycol and The carpet samples are then colored under the post-metallized dyes, colored under the following conditions: shoot much less, and indeed they have one The pH of the dye liquor (at room temperature) is 30% higher hourly sunlight value than carpets using ammonium hydroxide from polyhexamethylene adipamide alone, which is set at 7.5 to 8.5. Then 0.25 g / l of a disperse dye is used.
Leveling salt, a condensation product of ethylene oxide and propylene oxide, 0.25 g / l of sodium oxide, to determine the "hourly sunlight value", the carpets are exposed to sunlight in the state salt of an unsaturated long-chain alcohol Florida, USA. The number of exposure sulfates and 0.5% (based on the weight of the 25 hours until a color change is observed) of a dye (CI Acid Red 182) is added. is given as the "Sunlight hour value". After 20 minutes the temperature is increased to 40 ^° C. after a further 15 minutes increased to 50 ⁰ C and then, claim:
after another 15 minutes have passed, brought to the boil in the process of making evenly gradients of 30 minutes. The stainable 30, wirbeldüsengebauschtem polyamide bath is maintained I ¹ I ₂ hours with boiling. Then continuous yarn, characterized, the samples are cooled, rinsed and dried. that polyamide, which is 3 to 25 weight Visual inspection of the samples shows that the sample is chain-terminated with percent polyethylene glycol their threads from the polyamide-polyethylene glycol hydroxyl groups and a molecular weight is produced, in a deep, brilliant, red shade 35 of at least 1000 in an even distribution is stained. contains, melt-spun into threads, these threads In the case of carpets that contain polyglycol, stretched less and by means of vortex jet treatment the unevenness of the staining around the textured.