WO2008055643A1

WO2008055643A1 - High-loading active ingredient compositions comprising release agents and lubricants in a metallocene wax carrier

Info

Publication number: WO2008055643A1
Application number: PCT/EP2007/009584
Authority: WO
Inventors: Reinhold Kling
Original assignee: Clariant International Ltd
Priority date: 2006-11-08
Filing date: 2007-11-06
Publication date: 2008-05-15
Also published as: DE102006052603A1

Abstract

An active ingredient composition comprising a high proportion of liquid or free-flowing active ingredients such as release agents and lubricants, and a plurality of polyolefin waxes, wherein the quantitatively greater proportion is a metallocene wax and, if appropriate, further waxes, for example polar or nonpolar non-metallocene polyolefin waxes, may be present. All polyolefin waxes together make up at least 25% by weight of the formulation and melt between 80 and 170°C. The inventive active ingredient composition has reduced dusting and is used especially for masterbatch production.

Description

description

Uploaded active ingredient compositions containing release agents, lubricants and lubricants in a metallocene wax carrier

The present invention relates to the preparation of highly charged lubricant compositions containing low melting or liquid release, lubricating and lubricating agents. These substances significantly affect the quality of the plastics, e.g. Increased transparency, reduced color change, better sliding and increased flexibility.

The invention relates to the use of copolymeric low molecular weight waxes for the preparation of such active ingredient compositions in which the waxes are prepared by means of metallocene catalysts having a low dropping point, high transparency and low viscosity. The use of these waxes, the incorporation of lubricants, release agents and lubricants is much easier, the process temperatures can be kept significantly lower, a much higher loading than previously possible is possible and can be dispensed with a polymeric carrier.

In order to ensure a higher lubricity in plastics, the use of low and high molecular weight waxes, such as. various mineral, silicone, or paraffin oils and lubricants, possible. These may be common mineral oils, but also paraffin oils, which are also used in the production of EPDM (ethylene-propylene-diene rubber). The paraffin oil addition during EPDM production increases the elasticity of the products. The incorporation of higher amounts of erucaamides, erucic acid amides and oleamides, etc. is possible. These products are often used in film processing as antiblocking agents. At masterbatches such high demands are made:

The incorporated products should be optimally distributed, they should be present only limited to the surface, so that clumping be avoided, with the highest possible dosage in order to keep the raw material costs as low as possible. For the production of dust-free, granular and pulverulent active ingredient compositions which contain a high concentration of lubricants, release agents and lubricants, the following are currently the following single-stage or multi-stage processes: The waxy / polymeric formulation components are fed via the main feed of the extruder; and lubricants that are powdery or liquid are conveniently introduced via corresponding sidefeeder into the machine. An addition to the main entry is also possible. Subsequently, a melt mixture can be carried out in a suitable extruder or in kneaders. This is followed by granulation, grinding or spraying.

A cold mix consists of suitable polymer supports such as polyethylene, polypropylene or ethylene vinyl acetate copolymer and the like. The disadvantage of these polymer blends is that the proportion of polymer allows only a limited addition of short-chain components. If the saturation range is exceeded, and this can often already be around or below 10%, separation of the polymer and the lubricating, separating and lubricating additives occurs.

DE-A 15 44 830 discloses a pigment preparation in which the pigment particles are enveloped by an amorphous homopolymer or copolymer of propylene, butene-1 and hexene-1 or a propylene-ethylene block polymer. In the preparation of the pigment preparation, filtration and drying steps are required.

DE-A 12 39 093 describes support materials based on a mixture of an amorphous ethylene-propylene block copolymer and a crystalline polypropylene for the production of pigment concentrates.

DE-A 26 52 628 refers to the use of polypropylene waxes having a viscosity of 500 to 5,000 mPa.s (170 ⁰ C) and an isotactic content of 40 to 90%. In DE-A 195 16 387 a highly effective dispersion is achieved by a dispersant which contains a mixture of different polyolefin and special polyacrylic acid esters.

In JP-A 88/88287 preparations are described which consist of pigment, lubricants, fillers and an amorphous polyolefin.

DE-A 26 08 600 relates to pigment concentrates for coloring thermoplastics containing pigment, polyolefin wax, an ethylene-vinyl acetate copolymer and colloidal silica.

All lubricant, lubricant and release agent preparations hitherto used in practice must, if they have an active ingredient content of more than 10%, be prepared with a relatively complex process equipment, such as e.g. underwater pelletizing. Due to the high loading, the strand strength of the produced masterbatches will be lower. Strand pelletizing is state of the art at masterbatch companies. One possibility of improvement would theoretically be the use of special polymers that flow readily, that are processable at lower temperatures, and that are well tolerated by different polymers. However, polymers that have this property pattern have higher purchase costs.

The other possibility would be the use of highly porous polymer carriers, which can absorb the products more easily due to this special surface shape. However, this particular product form has significantly higher purchase costs, and also requires a temperature-controlled vacuum chamber, so that the easily melting or liquid components can be well absorbed, which in turn represents high investment costs.

For underwater pelletizing and the necessary equipment usually larger production quantities are necessary to come to economic production costs. Special lubricating, lubricating and separating agent-containing active substance preparations tailored to individual customer requirements are therefore expensive and can not be prepared with the same, high concentrations as usual.

The object of the present invention was to load active ingredient compositions with the highest possible proportion of liquid, low-melting or low-viscosity components such as lubricants, release agents and lubricants, in order to produce foamed or unfoamed plastomers and elastomers with good release properties and good sliding properties , economically and ecologically advantageous can be accomplished and so high-quality products.

On a polymeric carrier should be largely dispensed with, which on the one hand active ingredient compositions with a significantly higher content of lubricants, release agents and lubricants are possible and on the other hand, the finished preparations can be used in significantly more different polymers with different chemical composition than before, because there are fewer compatibility problems due to the high loading. The wax carrier also allows easier incorporation and dispersion into these polymers, resulting in a finer cell structure or more uniform molecular or molecular weight distribution.

This object is achieved in that lubricants, release agents and / or lubricants in a metallocene wax or a mixture of metallocene wax or a metallocene Zieglerwachs- mixture or a wax polymer mixture are incorporated.

Metallocene waxes or metallocene polyolefin waxes are by definition waxes prepared in the presence of metallocenes as a catalyst. The composition thus prepared is compounded in a special extrusion process into a slip, release or lubricant masterbatch.

The subject of the present invention is therefore an active substance composition comprising a.) One or more finely divided lubricants, release agents and / or lubricants and b.) one or more metallocene polyolefin waxes, and c.) optionally one or more waxes selected from polar and nonpolar non-metallocene polyolefin waxes, wherein the slip, release and / or lubricant a) in an amount of at least 10 Wt .-% to 75 wt .-% and the waxes b) and c) to at least 15 wt .-%, based in each case on the total weight of the composition.

In a preferred embodiment, the wax portion of the active ingredient composition contains at least 50% by weight of polypropylene metallocene wax, based on the weight of the wax portion.

In addition to the metallocene waxes, other polyolefin, EVA, montan or amide waxes can also be used, as well as low levels of a polymeric carrier.

All waxy components b) and c) of the carrier melt between 80 and 17O ⁰ C.

According to preferred lubricants, release agents and lubricants containing compositions contain 10 to 75 wt .-%, preferably 15 to 70 wt .-%, of a PTFE (polytetrafluoroethylene), silicone, paraffin, erucic acids, oil amides, amides or other lubricants and 25 bis 90% by weight, preferably 30 to 85% by weight, of at least one metallocene polyolefin wax b). In addition, preferred compositions according to the invention may also contain small amounts of fillers or additives, in particular 0 to 10% by weight, based on the total amount of the composition.

In particular, the compositions contain from 25 to 90% by weight, preferably from 30 to 85% by weight, of at least one metallocene polyolefin wax b) and optionally from 0.5 to 10% by weight, preferably from 1 to 7.5% by weight , one or more non-metallocene waxes c). The waxes prepared as catalyst in the presence of metallocene are in particular copolymer waxes of propylene and 0.1 to 50% of ethylene and / or 0.1 to 50% of at least one branched or unbranched 1-alkene having 4 to 20 C atoms with a dropping point ( Ring / ball) between 80 and 170 ⁰ C and a melt viscosity, measured at a temperature 170 ⁰ C, from 30 to 80,000 mPa-s, preferably from 45 to 35,000 mPa-s, in particular from 50 to 7,000 mPa-s.

The waxes prepared in the presence of metallocene as a catalyst are largely or completely amorphous and can additionally be polar modified if necessary.

As non-metallocene polyolefin waxes c) are on the one hand especially ethylene vinyl acetate (EVA) waxes having a dropping point between 90 and 120 ⁰ C, a vinyl acetate content of 1 to 30% and a viscosity of 50 to 3,000 mPa-s, preferably from 50 to 1,500 mPa-s, measured at a temperature of 140 ⁰ C ₁ and nonpolar, but also polar non-metallocene waxes having a dropping point in the range of 90 to 120 ⁰ C and a viscosity of less than 30,000 mPa-s, preferably less than 15,000 mPa-s, measured at a temperature of 140 ^C C, suitable.

In particular, homopolymers of ethylene or higher 1-olefins having 3 to 10 carbon atoms or copolymers thereof with one another are suitable as non-metallocene polyolefin waxes. These polyolefin waxes preferably have a weight average molecular weight M _{w of} between 1,000 and 20,000 g / mol and a number average molar mass M _{n of} between 500 and 15,000 g / mol.

Metallocene compounds of the formula I are used for the preparation of the metallocene polyolefin waxes used according to the invention.

This formula also includes compounds of the formula Ia,

the formula Ib

and the formula Ic

In formulas I, Ia and Ib, M ^{1 is} a Group IVb, Vb or VIb metal of the Periodic Table, for example, titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, preferably titanium, zirconium, hafnium.

R ¹ and R ² are identical or different and denote a hydrogen atom, a C ₁ -C ₁₀ , preferably C ₁ -C ₃ -alkyl group, in particular methyl, a C ₁ -C ₁₀ -, preferably C ₁ -C ₃ -alkoxy group, a C _Ö _O -Cl, preferably C -Cβ _ß-aryl, Cβ-C-io, preferably Cβ-Cs-aryloxy group, a C2-C10, preferably C ₂ -C ₄ alkenyl group, a C7-C40, preferably C ₇ -C ₁₀ arylalkyl group, a C ₇ -C ₄₀ -, preferably C ₇ -C ₂ -Alkylarylgmppe, a C ₈ -C ₄₀ -, preferably C ₈ -C ₂ -arylalkenyl group or a halogen, preferably chlorine atom.

R ³ and R ⁴ are identical or different and denote a mononuclear or polynuclear hydrocarbon radical which can form a sandwich structure with the central atom M ¹ . R ³ and R ⁴ are preferably cyclopentadienyl, indenyl, tetrahydroindenyl, benzoindenyl or fluorenyl, it being possible for the basic units to carry additional substituents or to bridge them with one another. In addition, one of the radicals R ³ and R ^{4 may be} a substituted nitrogen atom, wherein R ^{24 has} the meaning of R ¹⁷ and is preferably methyl, tert-butyl or cyclohexyl. R ⁵ , R ⁶ , R ⁷ , R ⁸ , R ⁹ and R ¹⁰ are identical or different and denote a hydrogen atom, a halogen atom, preferably a fluorine, chlorine or bromine atom, a C ₁ -C ₁₀ -, preferably C C ₄ alkyl group, a C ₆ -C _O -, preferably C ₆ -C ₈ -aryl group, a C ₁ -C 1 ₀ -, preferably C _r C ₃ alkoxy group, a -NR ¹ V, -SR ¹⁶ -, - OSiR ¹ V, -SiR ¹ V or -PR ¹⁶ ₂ radical, wherein R ^{16 is} a C ₁ -C ₁₀ -, preferably CrC ₃ alkyl group or C ₆ -C ₀ -, preferably Cβ-Cβ-aryl group or in the case of Si or P containing radicals is also a halogen atom, preferably chlorine atom or two adjacent radicals R ⁵ , R ⁶ , R ⁷ , R ⁸ , R ⁹ or R ¹⁰ form a ring with the C atoms connecting them. Particularly preferred ligands are the substituted compounds of the parent compounds cyclopentadienyl, indenyl, tetrahydroindenyl, benzoindenyl or fluorenyl.

R is ¹³

O-

R 17, 17 R 17 R 17

A * C W M M "R 18, 18 R 18 R 18

= BR ¹⁷ , = AIR ¹⁷ , -Ge, -Sn, -O-, -S-, = SO, = SO ₂ , = NR ¹⁷ , = CO, = PR ¹⁷ or = P (O) R ¹⁷ , where R ¹⁷ , R ¹⁸ and R ^{19 are} identical or different and are a hydrogen atom, a halogen atom, preferably a fluorine, chlorine or bromine atom, a C ₁ -C ₃₀ -, preferably C ₁ -C ₄ -alkyl, in particular methyl group, a Ci-Cio-fluoroalkyl, preferably CF ₃ group, a C ₆ -Cio-Fluoraryϊ-, preferably pentafluorophenyl, a C ₆ -Ci _O -, preferably C ₆ -C ₈ -aryl, a C ₁ -CiQ-, preferably C 1 -C ₄ -alkoxy, in particular Methoxy, a C ₂ -C ₀ , preferably C ₂ -C ₄ alkenyl, a C ₇ -C ₄ O, preferably C ₇ -C ₀ aralkyl group, a C ₈ -C ₄₀ -, preferably C ₈ -C ₂ -arylalkenyl group or a C ₇ -C _40, preferably C ₇ -C ₂ denote alkylaryl group, or R ¹⁷ and R ¹⁸ or R ¹⁷ and R ¹⁹ in each case together with the atoms connecting them, a ring.

M ² is silicon, germanium or tin, preferably silicon and germanium. R ¹³ is preferably = CR ¹⁷ R ¹⁸ , = SiR ¹⁷ R ¹⁸ , = GeR ¹⁷ R ¹⁸ , -O-, -S-, = SO, = PR ¹⁷ or = P (O) R ¹⁷ .

R ¹¹ and R ¹² are the same or different and have the meaning given for R ¹⁷ , m and n are the same or different and are zero, 1 or 2, preferably zero or 1, where m plus n is zero, 1 or 2, preferably zero or 1.

R ¹⁴ and R ¹⁵ have the meaning of R ¹⁷ and R ¹⁸ .

Examples of suitable metallocenes are:

Bis (1, 2,3-trimethylcyclopentadienyl) zirconium dichloride, bis (1) - trimethylcyclopentadienylzirconium dichloride,

Bis (1, 2-dimethylcyclopentadienyl) zirconium dichloride,

Bis (1,3-dimethylcyclopentadienyl) zirconium dichloride,

Bis (1-methylindenyl) zirconium dichloride,

Bis (1-n-butyl-3-methyl-cyclopentadienyl) zirconium dichloride, bis (2-methyl-4,6-di-i-propyl-indenyl) zirconium dichloride,

Bis (2-methylindenyl) zirconium dichloride,

Bis (4-methylindenyl) zirconium dichloride,

Bis (5-methylindenyl) zirconium dichloride,

Bis (alkylcyclopentadienyl) zirconium dichloride, bis (alkylindenyl) zirconium dichloride,

Bis (cyclopentadienyl) zirconium,

(Indenyl) zirconium,

Bis (methylcyclopentadienyl) zirconium, (Bis (n-butylcyclopentadienyl) zirconium dichloride, bis (octadecylcyclopentadienyl) zirconium dichloride, bis (pentamethylcyclopentadienyl) zirconium dichloride, bis ^ rimethylsilylcyclopentadienyOzirkoniumdichlorid, Biscyclopentadienylzirkoniumdibenzyl, Biscyclopentadienylzirkoniumdimethyl, Bistetrahydroindenylzirkoniumdichlorid, dimethylsilyl-θ-fluorenylcyclopentadienylzirkoniumdichlorid, dimethylsilyl-bis-1- 2,3,5-trimethylcyclopentadienyl ) zirconium dichloride, dimethylsilyl-bis-1- (2,4-dimethyl-cyclopentadienyl) zirconium dichloride, dimethylsilyl-bis-1- (2-methyl-4,5-benzoindenyl) zirconium dichloride ₎ dimethylsilyl-bis-1- (2-methyl) 4-ethylindenyl) zirconium dichloride, dimethylsilylbis-1- (2-methyl-4-i-propylindenyl) zirconium dichloride, dimethylsilylbis-1- (2-methyl-4-phenylindenyl) zirconium dichloride, dimethylsilyl bis-1- (2 methyl-indenyl) zirconium dichloride,

Dimethylsilyl-bis-1- (2-methyltetrahydroindenyl) zirconium dichloride, dimethylsilylbis-1-indenylzirconium dichloride, dimethylsilylbis-1-indenylzirconiumdimethyl, dimethylsilylbis-1-tetrahydroindenylzirconium dichloride, diphenylmethylene-θ-fluorenylcyclopentadienylzirconium dichloride, diphenylsilylbis-1-indenylzirconium dichloride Ethylene-bis-1- (2-methyl-4,5-benzoindenyl) zirconium dichloride, ethylene-bis-1- (2-methyl-4-phenylindenyl) zirconium dichloride, ethylene-bis-1- (2-methyl-tetrahydroindenyl) zirconium dichloride, ethylene-bis-1- (4,7-dimethylindenyl) zirconium dichloride, ethylene-bis-1-indenylzirconium dichloride, ethylene-bis-1-tetrahydroindenylzirconium dichloride, indenyl-cyclopentadienylzirconium dichloride, isopropylidene (1-indenyl) (cyclopentadienyl) zirconium dichloride , isopropylidene (9-fluorenyl) (cyclopentadienyl) zirconium dichloride, phenylmethylsilyl-bis-1- (2-methyl-indenyl) zirconium dichloride, and in each case the alkyl or aryl derivatives of these metallocene dichlorides. To activate the single-center catalyst systems suitable cocatalysts are used. Suitable cocatalysts for metallocenes of the formula I are organoaluminum compounds, in particular alumoxanes or else aluminum-free systems such as R ²⁰ _x NH ₄ χBR ²¹ ₄ , R ²⁰ _x PH ₄ χBR ²¹ ₄ , R ²⁰ ₃ CBR ²¹ ₄ or BR ²¹ ₃ . In these formulas, x is a number from 1 to 4, the radicals R ²⁰ are identical or different, preferably identical, and are Ci-Cio-alkyl or C ₆ _-C-I8 -aryl or two radicals R ²⁰ form, together with the connecting atom is a ring, and the radicals R ²¹ are identical or different, preferably identical, and are Cβ-Ciβ-aryl, which may be substituted by alkyl, haloalkyl or fluorine. In particular, R ^{20 is} ethyl, propyl, butyl or phenyl and R ^{21 is} phenyl, pentafluorophenyl, 3,5-bis-trifluoromethylphenyl, mesityl, xylyl or ToIyI.

In addition, a third component is often required to maintain protection of polar catalyst poisons. For this, organoaluminum compound, e.g. Triethylaluminum, tributylaluminum and others and mixtures suitable.

Depending on the process, supported single-center catalysts can also be used. Preference is given to catalyst systems in which the residual contents of support material and cocatalyst do not exceed a concentration of 100 ppm in the product.

Here, the melt viscosities were determined according to DIN 53019 with a rotary viscometer, the dropping points according to DIN 51801/2, the softening points ring / ball according to DIN EN 1427. The drop point determination is carried out with a drop point device according to Ubbelohde according to DIN 51801/2, the softening point ring / ball according to DIN EN 1427.

In addition to the components a), b) and c), the active substance composition according to the invention may also contain fillers or auxiliaries, such as stearates and antioxidants. It is likewise possible to use silicic acid, silicates, such as aluminum silicates, sodium silicate, calcium silicates. As lubricants, release agents and lubricants are in particular low and high molecular weight waxes, various mineral, silicone, or paraffin oils, erucamides, oleamides, PTFE, or similar products or mixtures thereof used. EPDM (Ethylene Propylene Diene Rubber) can be used to provide the products with higher stretch properties. Low-viscosity paraffin oils are usually used here. For film extrusion, the addition of erucamide and oleamide is known as a release agent.

The required proportion of metallocene waxes depends on the additive-matrix exchange reaction, the surface structure of the finished article, the optical properties, the processing properties, the viscosity of the lubricants, release agents and lubricants used, as well as the granule strength and the desired final product input quantity.

To improve the flowability, it is additionally possible to add up to 0.5% by weight of flowability improver, based on the weight of the composition.

The present invention also relates to a process for producing the active ingredient composition according to the invention by combining the individual constituents and subsequent homogenization in the extruder or kneader. The premixing of the individual components is preferred in the preparation of the composition and can be carried out in a suitable mixing apparatus, but optionally also further additives can be added later via a side dosing in solid or liquid form

The raw materials used can be in various forms. The waxes, as well as the other additives and additives may e.g. as granules, dandruff, powder or ultrafine powder, the lubricants, release agents and lubricants may also be present in liquid form in the mixture.

The following single-stage or multi-stage processes are currently known for the production of dust-free, granular and powdery active substance compositions: All components can be cold mixed and added via the main feed of an extruder, or the waxy / polymeric formulation portions are fed through the main throat of the extruder, the release, lubricants and lubricants are introduced into the machine via respective side feeders. Subsequently, a melt mixture can be carried out in a suitable extruder or in kneaders. This is followed by granulation, grinding or spraying.

A cold mixture consists of suitable polymer supports, such as polyethylene, polypropylene or ethylene vinyl acetate. The disadvantage of such

Polymer blends is the often limited compatibility of individual components, which can lead to a separation of polymer and the additives such as lubricants, lubricants and release agents.

When mixed at elevated temperature, the heat energy can be introduced via friction, via separate heating of the mixing trough or in both ways.

In the production of the composition on the extruder, it is preferable to work with a screw assembly which is tailored to the high active ingredient content. The temperature image is preferably lower than indicated in the prior art. Strand granulation is advantageously used for the production of the compositions according to the invention, but underwater granulation or hot blasting can also be used.

The compositions of the invention can be used particularly advantageously in the production of foamed or unfoamed plastics.

In contrast to the lubricants, release agents and lubricants containing compositions described in the prior art, the active compound preparations according to the invention can be incorporated into a wide range of polymers become. Examples include: polyolefins, ethylene-vinyl acetate copolymers (EVA), styrene-acrylonitrile copolymers (SAN), polyvinyl chloride (PVC), polyamide (PA), poly-ethylene glycol terephthalate (PET), poly-butylene glycol terephthalate (PBT) and their copolyesters, acrylonitrile-butadiene-styrene copolymers (ABS), polycarbonate (PC), as well as various special polymers After mixing with the polymer and reaching the required target concentration, the plastic mixtures can then be further processed to the desired end products.

Examples:

In the following embodiments, in each case a metallocene wax mixture prepared from the waxes metallocene-PP wax. The products are used in fine-grained state or in granular form.

PP waxes prepared as catalyst with metallocenes a) b) c) and d):

The product characteristics are determined by the following methods:

Drop point ISO 2176 // ASTM D 3954 ( ⁰ C) Viscosity DIN 53018 (mPa s)

Density ISO 1183 (g / cccm)

Molar mass is determined by GPZ method

The use takes place in the fine-grained state (sprayed or ground), or else in granular form. The masterbatch according to the invention was prepared as described below:

As a mixture for the extrusion:

Mixer: Hentschel mixer, content 5 liters

Approach: according to the examples given below Premixing: approx. 2 to 4 min. at U = 600 / min Subsequently, the extrusion was carried out on a co-rotating twin screw with downstream strand pelletizing. Granule size in diameter 0.8 to 3 mm.

Preparation Examples:

In the following examples, the following colorant compositions were prepared by the methods described above. As metallocene waxes, the above described wax was used in each case:

1) 30% by weight erucic acid olamide 70% by weight metallocene wax a

2) 30 wt .-% mineral oil

70% by weight of metallocene wax mixture a and c

3) 30% by weight of amide wax

70% by weight of metallocene wax c

Application examples:

The additive masterbatch compositions according to Preparation Examples 1 to 11 were added in a co-rotating twin screw with a special screw configuration and with a low temperature image

Masterbatches are produced, which lead to a quality improvement in different polymers, this can be a better sliding and separating behavior, increased transparency, greater elongation and a reduced color change.

Claims

claims:

1. active substance composition comprising a.) One or more finely divided lubricants, release agents and / or lubricants and b.) One or more metallocene polyolefin waxes, and c.) Optionally one or more waxes selected from polar and nonpolar non-metallocene Polyolefin waxes, wherein the lubricants, release agents and / or lubricants a) in an amount of at least 10 wt .-% to 75 wt .-% and the waxes b) and c) to at least 15 wt .-% are included each on the total weight of the composition.

2. The composition according to claim 1, characterized in that the wax portion of the active ingredient composition contains at least 50 wt .-% polypropylene metallocene wax, based on the weight of the wax portion

3. Composition according to claim 1 and / or 2, characterized in that the waxes of the components b) and c) melt at a temperature in the range of 80 to 170 ⁰ C.

4. Composition according to one or more of claims 1 to 3, characterized in that the metallocene polyolefin wax b) has a dropping point in the temperature range between 80 and 170 ⁰ C and a melt viscosity, measured at a temperature of 170 ⁰ C, in the range of 30 to 80,000 mPa · s, preferably from 45 to 35,000 mPa · s, in particular from 50 to 7,000 mPa · s.

5. Composition one or more of claims 1 to 4, characterized in that these 25 to 90 wt .-%, preferably 30 to

85% by weight of a metallocene polyolefin wax b), 0.5. to 10% by weight, preferably 1 to 7.5% by weight, of one or more non-metallocene waxes c), 15 to 70% by weight, and 0 to 10% by weight of fillers or additives.

6. The composition according to one or more of claims 1 to 5, characterized in that the lubricants, release agents and / or lubricants from the group of low and high molecular weight waxes, mineral, silicone, or paraffin oils, erucamides, Oleamide, PTFE, or mixtures of these products are selected.

7. The composition according to one or more of claims 1 to 6, characterized in that it contains one or more non-metallocene polyolefin waxes c) selected from oxidized and non-oxidized waxes having a dropping point below 135 ⁰ C and a viscosity of less than 30,000 mPa s, measured at 140 ⁰ C, possess.

8. The composition according to one or more of claims 1 to 7, characterized in that it comprises one or more metallocene copolymer waxes of propylene and 0.1 to 50 wt .-% of one or more other monomers selected from ethylene and branched or unbranched 1 Alkenes containing 4 to 20 carbon atoms.

9. A process for preparing a composition according to one or more of claims 1 to 8, characterized in that a) the individual components are mixed cold and then the homogenization of the individual components takes place in an extruder or kneader.

10. The method according to claim 9, characterized in that the starting materials b) and c) are used as granules, flakes, powder or as a fine-grain mixture.

11. The method according to claim 9 and / or 10, characterized in that the lubricants, lubricants and / or release agents are used in liquid form.

12. The method according to at least one of the preceding claims 9 to 11, characterized in that following the homogenization, a granulation via strand and Kopfgranulierung or over Heißabschlag or Unterwassergranuiierung.

13. Use of a composition according to one or more of claims 1 to 8 for the production of foamed or unfoamed plastic parts.