DE1279890B - Use of non-aqueous smelting agents - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

D06m

German class: 29 b -5/01

Number:
File number:
Registration date:
Display day:

P 12 79 890.2-43 (P 26021)

November 11, 1960

October 10, 1968

It is known to use an anhydrous, water-free, to use fusible size that is solid at least up to a temperature of 60 ° C and which is characterized in that it contains fatty acids, hydrocarbons and metal salts of at least one Contains fatty acid, thereby reducing the length of time caused by the use of aqueous sizing liquors Avoid drying process (Swiss patent specification 279 602). This known, at room temperature solid, anhydrous sizing masses should be usable for all textile raw materials.

Elastic threads made of rubber or segmented copolymers, which are known not to be without Have the peeling equipment processed, because otherwise they easily stick to each other and to the work surfaces, have previously been treated with a treatment made of talc, which is in the form of a slurry in Water, alcohol or acetone was applied because it was generally believed that oily Lubricants the physical properties of threads made from rubber or from synthetic elastomeric fibers Block copolymers would affect.

However, the talc suspensions have significant disadvantages because they settle easily and that Talc is distributed unevenly on the threads and causes the yarn processing equipment to wear out quickly contributes.

Attempts with many other lubricants commonly used in textile processing have failed with threads synthetic elastomeric block copolymers also failed because of these agents are partly too strongly absorbed by the threads and exhale when the threads are stretched under tension, and in some cases do not form satisfactory coatings on the threads.

The invention is based on the object of a lubricant for threads made of synthetic elastomers To provide block copolymers available, the disadvantages of the previous for such elastic Does not have the lubricant used.

It has surprisingly been found that the prevailing view that water-free lubricants based on hydrocarbon oils the physical properties of threads made of synthetic affect elastomeric block copolymers, based on a prejudice.

The invention therefore relates to the use of non-aqueous lubricants, which are a textile oil and contain a colorless soap, for textile thread or fibers, characterized in that a Schmälz-

Use of non-aqueous lubricants

Applicant:

E. I. du Pont de Nemours and Company,

Wilmington, Del. (V. St. A.)

Representative:

Dr.-Ing. W. Abitz, patent attorney,

8000 Munich 27, Pienzenauer Str. 28

Named as inventor:
James Peter Yuk, Waynesboro, Va. (V. St. A.)

Claimed priority:

V. St. v. America November 12, 1959

(852194),

of March 29, 1960 (18 264)

agent, which contains the soap in finely divided form in amounts of 2 to 20 percent by weight, is used for threads or fibers made of synthetic elastomeric block copolymers.
The lubricant used according to the invention prevents the elastic threads from sticking to one another in a wound package and prevents the threads from being electrostatically charged. The elastic threads provided with the lubricant do not exert any abrasive or irritating effects on the skin and do not need to be desized for certain purposes.

The elastic threads to which the invention can be applied consist of so-called segmented copolymers, which consist of segments of a high-melting, crystalline polymer and thus alternate Assemble segments of a low-melting, amorphous polymer. The crystalline refractory segment can e.g. B. from a polyurea, a polyurethane, a polyamide, a Bis-ureylenpolymeren or a polyester derived be. The low-melting, amorphous segment can, for. B. of a polyester, a polyether or a Hydrocarbon polymer derived. Such elastomeric synthetic block copolymers are

z. In U.S. Reissue Patents 24,689 and 24,691, in British Patent 779,054, the French patent specification 1172 566 and the USA.

809 620/469

3 4

Patents 2,929,801, 2,929,802, 2,929,803 and synthetic elastomeric block blend filaments 2 929 804. polymerizaten preferably a low-viscosity composition

Ais textile oils in the retrofit according to the invention with a viscosity of less than about 70 cP Applied lubricants used in organic liquids. The minimum amount of dispersed soap Consideration with which textile fibers are normally 5 is about 2 percent by weight of the finish. That act. Such liquids are contained in the lubricant used in all the invention common low-volatility oils, which are used to melt the correspondingly about 2 to 20 percent by weight, pre-fibers serve, e.g. B. tallow, naphthenic oil, sulfated © preferably 5 to 13 percent by weight of dispersed solid or sulfonated oils, aromatic oils, paraffin oils and substances.

synthetic oils, such as the silicones. ίο The lubricant can be used in the usual way, such as

If necessary, oil mixtures can also be used by dipping, padding or spraying will. For example, it has been shown that through the will. Yarns can be added to the thread run a lubricant capable of being injected or passed through Treat the thread surface of a mono-baths bound to this or pass over wicks from Molecular film to form a mineral oil base 15 which they hold the equipment. An advantageous one The tendency of the threads in a coiled pack application method consists in passing the threads over sticking together is diminished. Such a roller, which is included in the equipment medium are e.g. B. boiled peanut oil, alkanolamine tub dipped. When the equipment is continuous Fatty acid condensates and the polyoxyalkylenes as applied to elastic threads during spinning; Mixed polymers of ethylene oxide and propylene oxide. 20, the pan and roller device is preferred If such a lubricant in addition to the immediately behind the first, non-positively driven base oil is used, is preferably provided benen feed roller with which the elastic In addition, a supplementary lubricant is added, the threads together as they leave the spinneret Mixing aid and dispersing aid act. come.

Examples of such supplementary lubricants are 35. Usually the threads take the lubricant acetylated castor oil and the long-chain esters of in quantities of less than 10% of their own weight Sorbitans. Acetylated castor oil is used as a supplement. However, the intake should be at least 3.5 flavorings preferred. weight percent, preferably at least 5 weight percent

It has been found that textile oils have a really satisfactory percentage, in particular 5 to 8 percent by weight Equipment elastic threads from 30 wear.

Block copolymers result only when they are mixed with the colorless peelings used according to the invention, finely divided soaps of certain metals of the medium-treated elastic yarns can be used as Groups I, II and III of the periodic system are dispersed in such, but also in the wrapped state contain. In this sense are suitable to be applied. On the spinning machine, Soaps of lithium, sodium, potassium, rubidium and 35 with fewer breaks than when using elastic Cesium. Magnesium, calcium, strontium, barium, talc-treated yarns with spun yarns Zinc, cadmium or aluminum. make it look better. The manufacture of

The manufacture of knitted fabrics coated with aluminum distearate can be carried out directly from packs of the yarn in the thick lubricating grease is from the USA patent specification freshly spun state, instead of only after rewinding, 2,702,792 known. 40, as is usually the case with yarns with talc

The higher fatty acids are the more saturated and the equipment is the case. The yarns can also be used for unsaturated fatty acids with 8 to 22 carbon- manufacture of new finished products are used, atoms. The soaps can also be made of salts. B. when rasehel working, in which the use ated fatty acids, such as keto and oxy acids, ζ. B. of rubber threads or synthetic elastic threads 4-keto-stearic acid or 12-oxy-stearic acid, if given with talc, does not do justice to practice, stand or contain them. It is essential that the lubricants used according to the invention

Soap is practically colorless and in finely divided form offers the further advantage that the dispersed status is available. Examples of suitable soaps are Na soaps, the threads against electrostatic charge triumcaproate, sodium laurate, sodium behenate, potassium protect. This is especially true for magnesium stearate. umoleate, potassium myristate, lithium stearate, lithium 50 Therefore, the use of special antistatic palmitate, zinc stearate, calcium oleate, magnesium laurate, agent not required.

Aluminum trioctoate and aluminum distearate. Before- The following parts and percentages are

The soaps of the metals of group II are added, unless otherwise stated, they relate to that of zinc, calcium and magnesium. Magne- weight,
silicon stearate is particularly preferred. 55 The preparation of the in the following examples

The dispersed soap particles are supposed to have a twisted thread, which is not patented here Radius from 0.05 to 5 μ, preferably from 0.2 to, is carried out as follows: 1.5 μ. 92 parts (0.092 moles) of polytetramethylene ether glycol

Since the particle size and the amount of dispersants having a molecular weight of about 1000 are alloyed soap influenced in the oil equipment whose viscosity 60 under nitrogen for 3 hours at 8O ⁰ C with 8 parts, the upper limit depends of the soap (0.046 mol) of toluylene -2 ₅ 4-diisocyanate implemented. The content of the equipment after the upper limit of the reaction product (40 parts), the final Hy-viscosity, at which one can work in practice. By having hydroxyl groups has, for 1 h at 8O ⁰ C and the gelling and viscosity differences will avoid, ρ 10 parts, ρ'-methylene-diphenyl-diisocyanate converted to the dispersions at room temperature for 65 sets manufacturer. The reaction product, the terminal iso, can be placed and used at room temperature. Has cyanate groups, 25 parts of N, N'-Di-Man can be diluted with lubricants with high viscosities methylformamide. 15 parts of this solution work from several poise; in general, by adding 0.165 parts of hydrazine hydrate

subjected to chain extension in 30 parts of dimethylformamide. The resulting solution of the elastomeric polymer contains 20% solids and has a viscosity of 400 to 500P at 30 ⁰ C. To this solution is a slurry of titanium dioxide in dimethylformamide and a solution of poly (methacrylic acid-N, N-diethyl- / 9-aminoethyl ester) in dimethylformamide in such a way that the finished mixture contains 5% of the additives, based on the elastomeric solids.

This mixture is heated to 50 to 70 ⁰ C and spun in a dry-spinning shaft, which is heated by nitrogen from 250 ° C to a 15fädigen yarn bundle. At the bottom of the shaft, the threads are allowed to touch each other and grow together to form a 300 denier monofilament.

Example! . .

The untreated monomials are treated with an

When exiting the shaft, the monofilament is treated with the following composition: a finish with the following composition: mineral oil 75

Blown peanut oil
(Viscosity 250 cSt) 5

Example 4

The untreated monofilaments are finished with a finish the following composition:

Mineral oil 7Ϊ

Blown peanut oil

(Viscosity 250 cSt) 5

Acetylated castor oil 10

Sodium stearate 10

The results obtained with the finished yarn are similar to those of Example 1.

Example 5

acts:

Mineral oil 75

Blown peanut oil

(Viscosity 250 cSt) 5

Acetylated castor oil 10

Zinc stearate 10

When unwinding from a spool, the oil-treated one shows elastic thread has no tendency to get caught on adjacent threads.

Example 2

The following composition is applied to the untreated, freshly spun monofilaments applied:

Mineral oil 72

Acetylated castor oil 10

Blown peanut oil

(Viscosity 250 cSt) 5

Magnesium stearate 13

This equipment has a viscosity of 70 cP at room temperature. The mean radius of the dispersed Particle of the magnesium stearate is 0.5 μ. The results obtained with the finished yarn are the same those of example 1.

Example 3

The monofilaments of the elastic yarn are given an oil finish when they exit the spinning shaft the following composition:

Mineral oil 62

Acetylated, partially alcoholized castor oil 15

Blown nipple oil

(Viscosity 300 cSt) 5

Ethylene oxide propylene oxide

Mixed polymer 5

Sorbitan ethylene oxide distearate 5

Zinc laurate 8

The results obtained with the oil-treated elastic thread are those of FIG Examples 1 and 2 are similar.

Acetylated castor oil 10

Aluminum distearate 10

The results obtained with the finished yarn are similar to those of Example 1.

In the above examples the metal salts are dispersed in the other ingredients of the lubricant, and the dispersed particles have an average radius of 0.05 to 5 µm. The physical properties of the elastic yarn are surprisingly not adversely affected by the lubricant. Tear strength, elongation at break, modulus of elasticity, tension drop and elastic recovery of the with the Threads treated with lubricants have practically the same values as elastic threads with a talc finish. The same results are obtained when using threads from a block copolymer used, which is made with a polyester or an N-alkylated polyurethane instead of a polyether has been. Substantially the same results are also obtained when using the bis-ureylene segment of the block copolymer is replaced by a urea, urethane or amide segment.

Claims (4)

Patent claims: 1. Use of non-aqueous lubricants containing a textile oil and a colorless soap, for textile thread or fibers, characterized in that a lubricant, that contains the soap in finely divided form in amounts of 2 to 20 percent by weight, for threads or Fibers made from synthetic elastomeric block copolymers is used. 2. Use of non-aqueous lubricants according to claim 1, characterized in that that the lubricant in amounts of about 3.5 to 10, in particular 5 to 8 percent by weight of the Threads or fibers is applied. 3. Use of non-aqueous lubricants according to claim 1 or 2, characterized in that that in the lubricant the soap parts 55 60 65 7 8 Average radii between about 0.05 and 5, especially intralinear nitrogen-nitrogen bonds between 0.2 and 1.5 μ. is turned. 4. Use of non-aqueous pork agents according to claims 1 to 3, characterized by the following: indicates that the lubricant is applied to fibers or 5 Swiss Patent No. 279 602; Segmented polyurethane filaments with U.S. Patent No. 2,702,792. 809 620/469 9.63 © Bundesdruckerei Berlin