DE1669432B2 - Preparation of highly elastic threads made of segmented polyurethanes to prevent them from sticking - Google Patents

Description

R »-

(OC ₂ H ₃ R ¹ H) _1n OH

wherein R ¹ and R ^{n are} a hydrocarbon radical of the formula C _n H ₂ n + i or C _n H _{2n Λ} (η = 1 to 20), m is an integer from 1 to 6 and R ^{ni is} hydrogen or the methyl radical, optionally in a textile oil dispersed or dissolved, used.

To the emulsifiability or solubility of the tertiary phosphoric acid ester on the one hand in the so-called Textile oils and, on the other hand, in washing liquors, they can be increased with emulsifiers before application be mixed. For this purpose, ethylene oxide adducts of the general formula are used

R- (O-CH ₂ - CH _a) "OH

where R is a hydrocarbon radical of the formula C ₉ H _{29 + 1} or C ₉ H ₂ , -, (q = 10 to 20) and ρ is an integer from 4 to 50, is used.

The added amounts of ethylene oxide adduct vary depending on the constitution and properties of the used tertiary phosphoric acid ester.

The tertiary phosphoric acid esters are non-ionic compounds and therefore give the polyurethane elastomer threads Complete independence from the ionic activity of the mixed fiber detergents and the Detergents and certain dyes. That means that there are precipitations with other preparation agents, not to be expected with detergents or with dyes.

Depending on requirements, the tertiary phosphoric acid esters are mixed with the emulsifying Alkylene oxide adducts in so-called textile oils,

like ζ. B. mineral oil, is dispersed or preferably elastomeric filaments made of segmented polyurethane

dissolved, with concentrations between 10 and 90% after leaving the spinning shaft by means of

to get voted. Depending on the type and quantity ratio, the godets are heated to 65 ° C

of the phosphoric acid ester used, dip the emulsifier in a tub, a solution of the following

and oils, mixtures are obtained which are applied at room 5 composition:

temperature liquid to pasty, often even wax _{2Q Gewichtstene adduct of} Phosphorsäuredi-

like consistency. Is the viscosity of such a r ^r

will. _{Or the preparation mixture} is in a xo _{7Q weight} J _{parts ΡΕ} ^ _{αηο1 viscosity 35 to}

preferred procedure at elevated temperature , ~ C _n On ⁰ C

applied with the help of godets, which in turn in ^ '

immerse heatable tubs, in certain cases the total denier of the thread is 400 den

the phosphoric acid esters can be determined without further additives by extraction with carbon tetrachloride

and optionally in the form of a melt on the 15 preparation application is 5%, based on the

Thread to be applied. To the subsequent thread weight after an eight-day idle time of the

The thread layers of the lap are still glued to the segmented polyurethane threads in the spinning bobbin

To prevent thread winding, these elastomeric should not be glued together, and the thread can be

threads 0.5 to 10%, preferably 1 to 5%, of their rewinding without increasing thread tensions and

contain their own weight of phosphoric acid ester. 20 thus noticeable stretching of the highly elastic

This method of treatment allows the manufacture of thread to be observed
of highly elastic elastomer threads, which are non-sticky in the thread lap despite the higher lap weights. Example 2
are and therefore also after prolonged storage

have perfect run-off behavior. The preparation 1 obtained on the spun elastomer threads after the use according to the invention is after leaving the spinning shaft by means of an application guarantee the preparation required for further processing, which in turn immerses heated tubs in the required smoothness of the thread surface, which is required at 60 ^{0 C} Adequate protection against static static composition applied:
Charges and, in particular, changes the physical 30 ".."., »", ",
Kaiischen properties, such as the elastic recovery 24 parts by weight adduct of the phosphoric acid capacity of the threads, practically none. dioleyl ester and 2 moles of ethylene oxide,

The elastomer threads to be prepared can be sorted according to *? FTx f? ΐ * "* ^Ole y ^{lalkoho1 and}

known method by spinning Lö- 20 mol of ethylene oxide,

solutions of segmented polyurethanes, e.g. B. according to the ₃₅ ^ O parts by weight of paraffin oil of viscosity 35 to

German patent specification 1123 467 or according to 45cp / 2l) C.

German Auslegeschriften 11 83 196 and 11 61 007 The total titer of the thread is 400 den, the

be made. determined by extraction with carbon tetrachloride

From the German patent application 3 28 940 IVc / preparation order is 7%, based on the

29b and FR-PS 14 36 657 is already known, 40 thread weight. After the

the antistatic properties of textile material) en bobbin are still the thread layers of the lap

made of synthetic fibers, such as polyesters, polyamides, are not glued together, and the thread can be

Vinyl polymers, polyolefins or polyacrylic bobbins without increasing thread tensions and

trile, due to the application of alkylene oxide additions, thus noticeable stretching of the highly elastic

products containing acidic phosphoric acid esters with a higher molecular weight of 45 thread are observed,
to improve kular hydroxyl compounds. The GE-

mentioned publications contain no reference example i

points out that the preparations used are applied to the spun elastomer threads after

also suitable for gluing highly elastic game 1 after leaving the spinning shaft by means of

Prevent threads from segmented polyurethanes. 50 preparation godets a solution of the following

The task of the glue applied to the thread winding composition:

to avoid was namely with the self _{-adhesive 20 parts by weight adduct of} phosphoric acid elastomer threads from segmented polyurethanes ab-di-i-octyl ester and 2 moles of ethylene oxide,
solut priority, and there was no reason to _{10 Gewicht8teite} adduct of lauryl alcohol and known from the prior art anti-static 55 ^ ^ _o j Äthvlenoxid
effective connections for highly elastic, segmented

tied polyurethane threads before the first winding. The total denier of the thread is 400 den, the

intended for the purpose of antistatic finishing by extraction with carbon tetrachloride

because the electrostatic charge is little preparation application here at 10%, based on the

is problematic. The invention use 60 thread weight. After the

was therefore not suggested by the prior art. The thread layers of the lap are not yet the spinning bobbin

. glued together, and the thread can be

Example 1 bobbin without increasing thread tensions and thus

According to the German patent 11 23 467 noticeable stretching of the highly elastic thread produced, spun from dimethylformamide 65 can be observed.

Claims (2)

Patent claims: 1. Use from 0.5 to 10 percent by weight, based on the weight of the to be prepared Elasiomer thread, a tertiary thread optionally dispersed or dissolved in a textile oil Phosphoric acid esters of the general formula R ¹ -O R ⁿ - O wherein R ¹ and R ^{11 are} a hydrocarbon radical of the formula C "H _{2B +} i or C _n H _2n -! (n = 1 to 20), m is an integer from 1 to 6 and R ^{m is} a hydrogen atom or the methyl radical, for the non-stick preparation of highly elastic threads made of segmented polyurethanes before the first winding. 2. Use of a tertiary phosphoric acid ester according to claim 1, characterized in that that preparations are used which also have ethylene oxide adducts of the general formula R- (O-CH ₂ - CH ₂₎ "OH wherein R is a hydrocarbon _{radical of the formula C 9} H 29+, or C ₉ H ₂₉ -! (9 = 1 ° ^b » ^s 20) and ρ means an integer from 4 to 50. Polyamylsüoxanes from highly elastic segmented polyurethanes are also said to be advantageous as preparation agents can be used, while in other cases an application of organic silicic acid esters, like tetrakis- (2-ethylbutyl) -silicate, has proven itself. Through the sole use of so-called textile oils as a preparation agent, the gluing segmented by threads made of highly elastic ίο but poorly prevented polyurethanes; will. Since these low-viscosity oils are relatively ins The thread interiors diffuse so that the thread surface is depleted of preparation, in particular those remain Freshly wound, not yet textile wound thread lap free from sticking only for a relatively short downtime. It has now been found that the thread laps not yet textile segmented by highly elastic ones Polyurethane threads are completely free from sticking even after standing for several days, if an alkylene oxide adduct is used for preparation prior to the first winding of the threads by continuous application a phosphoric acid diester is used. The phosphoric acid diesters can be used both with »5 saturated and unsaturated alcohols according to known ones Process prepared and reacted further with alkylene oxide. According to the invention for the verklsbungsfreimachende Preparation of highly elastic threads made of segmented polyurethanes before the first winding 0.5 to 10 percent by weight, based on the weight of the polyurethane threads, of the tertiary phosphoric acid ester the general formula The invention relates to the use of a specific Preparation agent for the non-stick preparation of highly elastic, highly extensible Segmented Polyurethane Threads. It is known that highly elastic threads, such as rubber or synthetic threads made from highly elastic segmented polyurethanes, can only be processed without difficulty if a suitable preparation agent has been applied to their surface. Highly elastic, elastomeric threads, which are characterized by elongation at break in the range of 400 to 800 ° ₀ and in which the fiber-forming substance is a chain-like polymer, which consists of at least 85% of a segmented polyurethane, tend to be much stronger in the thread winding than the so-called "hard" threads to be glued together, as well as their adhesion to other surfaces, e.g. B. thread guide organs, is particularly pronounced. Rubber threads are usually prepared with talc, which is also used for elastomer threads from highly elastic segmented polyurethanes can be used. However, the talc dust rubbed off will easily lead to soiling or even damage to textile machines for further processing. It has therefore already been proposed to use threads made of highly elastic segmented polyurethanes with textlien Oils such as B. mineral oil, indenen dispersed certain metal soaps in fine form are. Preferred soaps are the salts of sodium, magnesium, zinc or aluminum of long chain fatty acids. These dispersions are preferably converted to the highly elastic ones during the spinning process Threads applied. With certain threads Ri-O