CS207884B1 - Preparation mixtures for the polypropylene fibrous formations - Google Patents

Description

(54) preparative mixtures for polypropylene fiber formations

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to n-polypropylene fiber formulations which are applied to them in the form of aqueous dispersions during spinning, shaping or both. The dispersions are characterized by durability, resistance to environmental influences, enable uniform surface treatment and thus good physico-mechanical properties of the products.

The use of suitable preparatives is necessary in the POP fiber blanket both in the spinning process and in other processing processes - in shaping, twisting, knitting, tufting, weaving, or in other operations.

Especially the process of scouring and shaping is difficult to prepare, whether it is a scouring process by upsetting, hot air, false twist or structural bending.

Polypropylene fiber formulations must meet the requirements of high emulsion stability, good lubricating and sliding properties, while also stopping the ability to promote uniform fiber formation, to the desired level of physico-mechanical properties, to protect against mechanical damage during processing, for antistatic effect, for thermostability in thermal ducting and shaping.

The currently used formulation mixtures according to CSAO 185 368 do not guarantee sufficient cohesion of the undiluted fiber for processing at high speeds. In the process of quenching and shaping, the composition is poorly stable to heat-oxidative stresses on the flashing shells. In practice, this is manifested by inclusions that cause damage to the fiber formation and thereby impair quality.

The poor oxidation resistance of the preparation component of the preparation mixture is also manifested by the tolerance and contamination of the preparation system and the reduction in the operational reliability of the process.

According to JP 10800, a silicone oil-based refining agent substituted with at least one methyl group provides an acid-resistant wicking of polyester filter fibers.

FH patent 2,320,982 discloses a polyorganosiloxane-based oiling agent which is characterized in that the active emulsion prepared by emulsion polymerization is stable at a viscosity of at least 0.02 m ² / g at 25 ° C. From this point of view, the coefficient of friction in the fiber-to-fiber system is not negotiable, and hence the suitability of such a preparation mixture, in particular for mechanical shaping.

The fabric softener disclosed in U.S. Patent 3,983,272 to Duber et al. Is a blend consisting essentially of diorganopolysiloxanes having a viscosity of 0.0005 to 0.01 m ² / g at 25 ° C and a phosphorus compound. The stated viscosity is high and the use of the blend is therefore limited to the finishing of the twisted fibers.

The improved strength of nonwoven fabrics is disclosed in SV patent 528,365. Polymethylene butoxyhydrosiloxanate in amounts of 100-400 g / l is used in the preparation.

UF Patent 65> 417/78 discloses the use of a softener composition consisting of derivatives of polyalkylene glycol and vegetable oil or nonionic sponges for treating polyester fibers. A good course of the forming and shaping process is reported.

Polysiloxane oils containing cyclic diorganopolysiloxane for improving thermal stability are disclosed in DE patent 2,719,038. An oil containing diorganopolysiloxane, triorgsnopolysiloxane and 1 to 10% cyclic polysiloxane is useful as a heat transfer heat exchanger.

From the examples given. Obviously, the use of organopolysiloxanes and silicone oils for fiber treatment usually provides good properties and improves the quality of the forming and shaping process. However, the application of these compounds to the fibers already in the spinning process is problematic, since these compounds form an emulsion with water relatively poorly and the emulsion stability is low. For this reason, the use of arganopolysiloxane compounds as surface treatments is more limited to the treatment of finished fiber products.

These problems are solved by the transgender mixtures in the form of 1 to 20% by weight of emulsions in water intended for the polypropylene fiber formations according to the invention. The active ingredient is a composition comprising by weight

10-90% alkylphenyl polyglycol ether phosphate in which the alkyl is 6-16 C containing an aliphatic hydrocarbon radical containing 1-20 moles of pro-ethylene oxide-ethylene oxide copolymers with a rel.mol.wt.

900-2000 per mole of alkylphenyl polyglycol ether phosphate and? 0?

1-90% dimethyl silicone oil-dimethylpolysiloxane having a viscosity of 300 to 800.10 ^-o mVg at 25 ° C. The final treatment of the POP fibers with the preparation according to the present invention assists in the quality construction of the windings and the good cohesion of the unstretched fiber. Even at 0.2% wt. The treatment of the active substances on the fiber is reflected in a very good course of the shaping process, a high operational reliability and an equalization of the properties of the fibers to be cut and formed.

The formulation compositions of the invention are highly stable, free from oxidation or other chemical changes during storage. The high stability of the mixture is also manifested by the purity of the preparation system and the smoothing of the surface treatment, which has a reflection in the uniformity of the physico-mechanical properties.

i ·

Example 1

In the manufacture of a mechanically shaped polypropylene cable with a fineness of 2670/100 dtex, a 4% aqueous emulsion was prepared prepared as follows:

<To the appropriate calculated quantity of softened water at 40 ° G, add active ingredients of the following composition:

62.5% by weight of nonylphenyl polyglycol ether phosphate containing 10 moles of propylene oxide-ethylene oxide copolymers with a molar mass of 1100,

O Λ

37.5% dimethyl silicone oil having a viscosity of 500.10 ^- m / g at 25 ° C.

The mixture was used in preparation for the production of mechanically shaped cable, in which the obtained properties were compared with the properties of the cable produced with the preparation according to CS AO 185 368:

feature: The mixture according to the invention: Mixture according to CS AO 185 368: Preparation content /% wt / 0.60 0.60 The cohesion of the ribbon does not make it harder. fibers / 94 88 Refinement /% / 21.8 17.8 Shrinkage /% / 3.5 5.2 Strength / cN / dtex / 2.14 1.98 Elongation /% / 58 67

The cohesiveness of the unstretched ribbon was determined according to the methodology contained in the Catalog of Physical-Enalytical Methods, Svit 1979 ·

The cable treated by the preparation according to the invention showed a high operational reliability of the process of quenching and shaping and compared to the preperation according to CS AO 185 368 more uniform values of physico-mechanical properties.

Example 2

For the production of 1.3 dtex POP staple fibers, a 16¾ preparation mixture was prepared prepared as follows:

Add the calculated amount of softened water at 40 DEG C. was added in China substance Composition: 90% by weight laurylpolyglykoléterfosfátu containing 5 moles per mole of propylene oxide copolymers, ethylene oxide-rel.mól.hmotnosti about 1800% by weight of dimethyl silicone oil having a viscosity of 700.10 m ^ ² / g at 25 ° C.

The mixture was stirred for 15 minutes. A fine dispersion transparent emulsion is obtained which is stable for more than 480 hours.

The ready-to-run polypropylene cable had good fibril coherence and achieved good operational reliability in production, drawing and forming processes:

fineness: strength: difficulty: cutting length: coagulation: humidity:

1,31 dtex

5.83 cN / dtex 70.34%

39.4 mm 34.8%

3.83%

4 ·

Example 3

In the manufacture of an air-shaped polypropylene cable having a fineness of 4000 dtex / 150, the spinning preparation used was a wt 8 emulsion prepared as follows:

To the calculated amount of softened water at 40 ° C warm was added a mixture of the active ingredients in the composition *% dodecylphenyl polyglycol ether phosphate containing 14 moles per mole of propylene oxide-ethylene oxide copolymer with rel.mole. weight 1,400,% dimethyl silicone oil having a viscosity of 300.10 &quot; myg at 25 &lt; 0 &gt; C.

After stirring for about 15 minutes, a stable mixture was formed. The heavy-duty cable produced with this coating showed giant cohesion of the fibrils and, at high-speed processing, exhibited very good operational reliability and a good level of physico-mechanical properties:

Strength of ribbon of unstretched fiber 96%

Content of preparation on fiber 0,83%

Refinement 26.4%

Reduction 5.1%

Strength 2.05 cN / dtex

74%

Cohesiveness of the POP ribbon of an undiluted cable was determined according to the methodology contained in the Catalog of Physico-Technological Methods, Svit 1979.

The operational reliability of the spinning, scouring, shaping and twisting process was at a high level.

Claims (1)

OBJECT OF THE INVENTION Prescription mixtures for polypropylene fiber formations in the form of aqueous emulsions containing 1-20 wt. active ingredients, characterized in that the active mixture comprises: 10-91% of an alkyl polyglycol ether phosphate in which the 6-16 C is an aliphatic hydrocarbon radical containing 1-20 moles of ethylene oxide propylene oxide copolymer with rel. weight 900 - 2000 per mole of alkyl polyglycol ether phosphate 1-90% dimethyl silicone oil having a viscosity of 300 to 800. 10 "^ d> / s at 25 ° C.,