WO2008037444A1

WO2008037444A1 - Highly loaded anti-condensation masterbatches obtained by the use of metallocene resins

Info

Publication number: WO2008037444A1
Application number: PCT/EP2007/008365
Authority: WO
Inventors: Reinhold Kling; Pirko Kolditz
Original assignee: Clariant Finance (Bvi) Limited
Priority date: 2006-09-30
Filing date: 2007-09-26
Publication date: 2008-04-03
Also published as: DE102006046564A1

Abstract

The invention relates to an active ingredient composition which has a high content in liquid or free-flowing anti-condensation agents and one or more polyolefin resins, the portion which is larger in quantity being a metallocene resin and the remaining resins being polar or nonpolar nonmetallocene polyolefin resins. All polyolefin resins add up to at least 10% by weight of the formulation and have a melting point between 80 and 170°C. The reduced dust active ingredient composition according to the invention is used for masterbatch production.

Description

description

Highly charged anti-condensation masterbatches through the use of metallocene waxes

The present invention relates to the preparation of highly charged anti-condensation masterbatches, which may be low-melting or liquid anti-condensation agents. With these substances, the quality of the plastics is significantly influenced, it can the end products increased transparency - the water pearls better off - to be given a better sliding behavior and greater flexibility.

The invention relates to the use of copolymeric low molecular weight waxes for the preparation of such masterbatches, in which the waxes are prepared by means of metallocene catalysts having a low dropping point, high transparency and low viscosity. By using these waxes, the incorporation of the anti-condensation agent is much easier, the process temperatures can be kept significantly lower, so that a much higher loading than previously possible and can be dispensed with a polymeric carrier.

In addition, strand granulation, which is common for many masterbatch producers, can be used for these highly charged anti-condensation masterbatches. However, it is also possible in certain cases to use underwater granulation or water ring granulation.

In order to ensure a reduced condensation of water on the packaging or on a greenhouse film, glycerol or sorbitan esters or blends are often used. It is triggered by a targeted water film on the film, the known negative effect of water pearls disappears, the film has a higher clarity.

At masterbatches such high demands are made. The incorporated products should be optimally distributed, the carrier should be optimally compatible with the polymer, the active substance should only be present on the surface to a limited extent, so that there is little clumping / fouling tendency, with as high a dosage as possible in order to keep the raw material costs as low as possible.

The following single-stage or multi-stage processes are currently known for the production of dust-free, granular and powdery highly charged liquid masterbatches and preparations. For the anti-condensation masterbatches, all components can be mixed cold and added via the main feed of the extruder. Or the waxy / polymeric formulation portions are fed via the main feed of the extruder, the anti-condensants, which may be powdery or liquid, are introduced into the machine via corresponding sidefeeder. For the glycerol and sorbitan esters, addition via side-feeder units is preferred by the product delivery form.

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 copolymer and the like, and may additionally contain waxes, fatty acid derivatives, stearates, etc. The disadvantage of these polymer blends is that the proportion of polymer allows a higher addition short-chain components only limited, the saturation range is exceeded, and this can often already be above 15%, there is a separation of polymer and the Konkondensationszuschlagstoffes, the viscosity differences are too large. The incorporation is no longer uniform, the strand strength of the masterbatches produced is lower.

JP 08053549 describes that in a polyolefin up to 200 parts of a liquid modifier and up to 20 wt .-% of an organic gelling agent is introduced. The masterbatch is made under heat and kneading of the aggregates and the polymer is added in small doses.

JP 05271427 describes that the thermoplastic and the migrating additive are dissolved in a solution. The mixture is then cooled, the gel is pulverized and the solvent is removed. This is followed by a heat treatment and drying under vacuum to finally have a masterbatch with a charge of 50 wt .-% active substance.

All anticondensation preparations hitherto used in practice, if they have a high active ingredient content, have been prepared by a complicated process or a highly porous polyolefinic carrier. In the very special process technology such as a temperature-controlled vacuum chamber, the liquid active ingredient is sucked into the material. This complex process leads to high costs.

One way to increase the drug content in the masterbatch would be to use special polymers that flow easily, work well at lower temperatures, and allow for a higher anti-condensation content. However, polymers that have this property pattern have higher input costs.

The object of the present invention was to load masterbatches with the highest possible proportion of liquid, low-melting or low-viscosity anti-condensation agents in order to bring about the production of plastic components with a high antifogging effect, good release effect and good sliding properties, economically and ecologically advantageously, and thus products to deliver high quality.

On a polymeric support should largely be dispensed with, which on the one hand Anticondensationsmasterbatche with a much higher

Active ingredient content are possible and on the other hand, the masterbatches produced in much more different polymers, different chemical composition than before, can be used because less Compatibility problems due to the high loading are present. The wax carrier should also allow easier incorporation and dispersion into the polymers, resulting in a more even distribution at the product surface.

This object is achieved in accordance with the invention by incorporating the anticondensation component into a metallocene wax, a mixture of metallocene waxes, a mixture of metallocene wax with Ziegler wax or a wax polymer blend. The main constituent of the wax carrier is a metallocene wax.

Metallocene waxes or metallocene polyolefin waxes are by definition waxes prepared in the presence of metallocenes as a catalyst. The composition so prepared is compounded by extrusion into an anti-condensation masterbatch.

The present invention is an Anitikondensationsmasterbatch, of the type mentioned, comprising i) one or more anti-condensation agents ii) one or more metallocene Polyolefinwachse iii) one or more waxes selected from polar and non-polar non-metallocene polyolefin waxes and

whose characteristic feature is to be seen in the fact that it is min. 20 to 75 wt .-%, preferably 25 to 70 wt .-% of an anti-condensation agent, in particular a polyglycerol or other anti-condensation agent, and 25 to 80 wt .-%, in particular 30 to 75 wt .-% wax, based on the Total weight of the masterbatch, wherein the wax contains at least 50 wt .-% polypropylene metallocene wax, based on the weight of the wax portion.

In addition, the masterbatch according to the invention may, if required, also contain quantities of fillers, such as silica, talc or additives, such as HALS and UV absorbers, of from 0 to 30% by weight, based on the total weight of the masterbatch. The masterbatch according to the invention thus has a particularly high anti-condensation agent and filler content, it has a very good compatibility with the starting polymers and largely excludes negative effects on the mechanical properties.

The metallocene waxes have a melt viscosity, measured at a temperature of 170 ^° C., in the range from 40 to 80,000 mPas, preferably from 45 to 35,000 mPas, particularly preferably from 50 to 10,000 mPas.

All the waxy components of the masterbatch are melt 80-170 ⁰ C.

Anti-condensation compositions preferred according to the invention contain from 20 to 75% by weight, preferably from 25 to 70% by weight of a polyglycerol or another anticondensating agent, and from 25 to 80% by weight, preferably from 30 to 75% by weight, of the metallocene polyolefin wax, 0.1 to 30 wt .-%, preferably 0.5 to 25 wt .-% of one or more non-metallocene waxes. In addition, the erfmdungsgemäße masterbatch may contain certain amounts of fillers, such as silica, talc or additives such as HALS and UV absorbers or organic, inorganic dyes or pigments, between 0 to 30 wt .-%, based on the total weight of the masterbatch.

The waxes prepared as catalyst in the presence of metallocene are 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 with 4 to

20 C atoms with a drop point (ring / sphere) between 80 and 170 ⁰ C. The metallocene 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, on the one hand, ethylene vinyl acetate in particular waxes with 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, at a temperature of 140 ⁰ C, on the other hand also non-polar, 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, at a temperature of 140 ⁰ C, suitable.

Suitable non-metallocene polyolefin waxes are homopolymers of ethylene or higher 1-olefins having 3 to 10 carbon atoms or copolymers thereof with one another. The polyolefin waxes preferably have a weight-average molar mass 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.

R ¹

/

M ¹ (I)

R ² R ⁴

This formula also includes compounds of the formula Ia,

(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 Ci-Ci ₀ -, preferably Ci-C3-Alkoxygmppe, a C ₆ -Ci _O , preferably Cβ-CB-aryl group, a C-6-C-ιo-, preferably C ₆ -C ₈ -aryloxy, a C ₂ -C ₀ , preferably C ₂ -C ₄ -alkenyl, a C ₇ -C ₄₀ -, preferably C ₇ -C ₀ arylalkyl group, a C ₇ -C ₄₀ -, preferably C ₇ -C ₂ alkylaryl group, a Cs-C ₄₀ -, preferably C ₈ -C ₂ -arylalkenyl group or a halogen, preferably a 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 Ci-Ci ₀ -, preferably C ι-C ₄ alkyl group, a C ₆ -C ₀ -, preferably C ₆ -C ₈ aryl group, a Ci-Ci ₀ -, preferably Ci-C ₃ alkoxy group, a -NR ¹⁶ ₂ -, -SR ¹⁶ - , -OSiR ¹ V, -SiR ¹ V or -PR ¹⁶ ₂ radical, wherein R ^{16 is} a Ci-Ci ₀ -, preferably Ci-C ₃ alkyl group or C- ₆ -C ₁₀ -, preferably C ₆ -C ₈ -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 ^1J

R 17 R 17 R 17 R 17

C O M 'M ^"■ M' R 18 R 18 R 18 R 18

= BR ¹⁷ , = AIR ¹⁷ , -Ge, -Sn-, -O-, -S-, = SO, = SO _2l = NR ¹⁷ , = CO, = PR ¹⁷ or = P (O) R ¹⁷ , where R ¹⁷ , R ¹⁸ and R ^{19 are} identical or different and 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, a Cio-fluoroalkyl, preferably CF ₃ group, a C ₆ -Cio-fluoroaryl, preferably pentafluorophenyl, a C ₆ -C 0, preferably C ₆ -C ₈ -aryl, a C ₁ -Ci ₀ -, preferably Ci C ₄ alkoxy, in particular methoxy, a C ₂ -C ₁₀ , preferably C ₂ -C ₄ alkenyl, a C ₇ -C ₄₀ , preferably C ₇ -C ₀ aralkyl group, a Cs-C ₄₀ -, preferably Cs-Ci 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 each form a ring together with the atoms connecting them.

M ² is silicon, germanium or tin, preferably silicon and germanium. R ¹³ is preferably = CR ¹⁷ R ¹⁶ , = 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, 2,4-trimethylcyclopentadienyl) zirconium dichloride, bis (1-dimethylcyclopentadienylzirconium 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,

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

(Indenyl) zirconium,

Bis (methylcyclopentadienyl) zirconium,

Bis (n-butylcyclopentadienyl) zirconium dichloride,

Bis (octadecylcyclopentadienyl) zirconium dichloride, bis (pentamethylcyclopentadienyl) zirconium dichloride,

Bis (trimethylsilyl) zirconium,

Biscyclopentadienylzirkoniumdibenzyl,

Biscyclopentadienylzirkoniumdimethyl,

Bistetrahydroindenylzirconium dichloride, dimethylsilyl---fluorenylcyclopentadienylzirconium dichloride,

Dimethylsilyl-bis-I ^ .S.S-trimethylcyclopentadienyOzirkoniumdichlorid,

Dimethylsilyl-bis-1- (2,4-dimethyl-cyclopentadienyl) zirconium dichloride,

Dimethylsilyl-bis-1- zirconium dichloride (2-methyl-4,5-benzoindenyl) Dimethylsilyl-bis-1- (2-methyl-4-ethylindenyl) zirconium dichloride, dimethylsilyl-bis-1- (2-methyl-4-i-propylindenyl) zirconium dichloride, dimethylsilyl-bis-1- (2-methyl-4-phenylindenyl ) zirconium dichloride, dimethylsilyl-bis-1- (2-methyl-indenyl) zirconium dichloride, dimethylsilyl-bis-1- (2-methyltetrahydroindenyl) zirconium dichloride, dimethylsityl-bis-1-indenylzirconium dichloride, dimethylsilyl-bis-1-indenylzirconium dimethyl, dimethylsilyl-bis 1-tetrahydroindenylzirconium dichloride, diphenylmethylene---fluorenylcyclopentadienylzirconium dichloride, diphenylsilyl-bis-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-dimethyl-indenyl) zirconium dichloride, ethylene-bis-1 -indenylzirconium dichloride,

Ethylene bis-1-tetrahydroindenylzirconium dichloride, indenyl-cyclopentadienyl zirconium dichloride isopropylidene (1-indenyl) (cyclopentadienyl) zirconium dichloride, isopropylidene (9-fluorenyl) (cyclopentadienyl) zirconium dichloride, phenylmethylsilylbis-1- (2-methylindenyl) 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 aluminoxanes or else aluminum-free systems such as R ^2O χNH _4- χBR ²¹ 4, R ^2O χPH _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 C ₁ -C 10 -alkyl or C ₆ -C ₈ -aryl or two radicals R ²⁰ together with the atom connecting them Ring, and the radicals R ²¹ are the same or different, preferably the same, 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 purpose, organoaluminum compound such as triethylaluminum, tributylaluminum and others and mixtures are 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.

The anticondensation masterbatches according to the invention may, as already mentioned above, additionally be used fillers such as zeolites, silicic acid, montmorillonites, bentonites, silicates such as aluminum silicates, sodium silicate, calcium silicates, nanoclay, talc, CaCO 3. Likewise, further adjuvants such as stearates, antioxidants, antistatic agents, oleic acid amide, glycerol fatty acid partial esters, stearates, slip agents may be present in small amounts. The anti-condensation masterbatches according to the invention may additionally contain auxiliaries such as UV absorbers, nickel stabilizers, sterically hindered amines (HALS products) and combinations thereof. This applies to all products listed in Additive Handbook Edition No. 5 (Edition 2000).

Suitable colorants are organic and inorganic dyes and pigments. As organic dyes and pigments, preference is given to using azo or disazo pigments, laked azo or disazo pigments or polycyclic pigments, preferably phthalocyanine, quinacridone, perylene, dioxazine, anthraquinone, thioindigo, diaryl or quinophthalone pigments. Suitable inorganic dyes and pigments are metal oxides suitable for pigmentation, mixed oxides, aluminum sulfates, chromates, metal powders, pearlescent pigments (mica), luminous colors, titanium oxides, cadmium-lead pigments, preferably iron oxides, carbon black, silicates, nickel titanates, cobalt pigments or chromium oxides.

Nonionic surfactants such as glycerol, polyglycerol sorbitan esters, ethoxylated sorbitan esters or mixtures thereof and combinations with distilled monoglyceride are used as anti-condensation agents. The required proportion of metallocene waxes depends on the additive-matrix exchange reaction, on the surface structure of the anti-condensation agent, on the end-part properties, on the surface structure of the finished article, in particular on the optical properties, as well as on the processing properties.

The present invention also relates to a process for producing the masterbatch according to the invention by combining the constituents and subsequent homogenization in an extruder. Pre-mixing of the individual components is an important prerequisite for product production and can be carried out at room temperature in a suitable mixing apparatus. This phase lasts about 3 to 10 minutes, preferably 5 to 7 minutes.

In the case of batch production on a co-rotating twin screw, it is expedient to work with a screw set-up which is matched to the high anti-condensing agent content. The temperature image is preferably lower than indicated in the prior art. Strand granulation is advantageously used to produce the masterbatches, but underwater granulation or water ring granulation can likewise be used.

In the case of the anti-condensation masterbatch preparation, it is also expedient to work with an initial mixing process. First, a mixture of the active ingredient composition according to the invention produced. The mixture is done with appropriate mixing technique. The preparation of mixtures can be omitted, however, by feeding the individual components of a recipe directly to the extrusion plant. The said mixture is then fed by means of a suitable metering device to an extrusion plant. As a rule, these are single or twin-screw extruders, but it is also possible to use continuous and discontinuous kneaders or compactors. The subsequent granulation takes place via strand and Kopfgranulierung, but also spraying is possible.

In order to create certain special types, preparations can also be blended with each other or with plastic in a second extrusion pass.

With the active ingredient composition of the invention, for example, polyolefins, ethylene-vinyl acetate copolymers (EVA), polyolefin blends, polyvinyl chloride (PVC), polyethylene terephthalate (PET), polybutylene glycol terephthalate (PBT) and their copolyesters, and special polymers.

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

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 polyolefins a) -c) used according to the invention and listed in Table 1 were obtained by copolymerization of propylene with ethylene with the

Metallocene catalyst Dimethylsilylbisindenylzirconium dichloride after the in EP-AO 384 264 (general rule Examples 1 to 16). The different softening points and viscosities were adjusted by varying the ethylene input and the polymerization temperature.

Table 1: Metallocene polyolefins used

Filier - silica gel - particle size 6 to 10 microns

The use takes place in the fine-grained state (sprayed or ground), or else in granular form. The blowing agent composition 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 were mixed according to the methods described above, the filler was mixed with the wax. When Metallocene wax was in each case the above described wax used, the addition of the anti-condensation agent was carried out via a sidefeeder:

1) 40% by weight of polyglycerol ester 55% by weight of metallocene wax a

5% by weight of silica

2) 30% by weight of sorbitan ester

70% by weight of metallocene wax b

3) 30% by weight of glycerol ester

70% by weight of metallocene wax b

Application examples:

The anti-condensation masterbatches according to Preparation Examples 1 to 3 were adjusted and prepared in a co-rotating twin screw with a special screw design and with a low temperature image to form masterbatches, which lead to a quality improvement in different polymers. This is mainly a reduced droplet formation on the film surface, increased transparency, and a better sliding behavior, and a higher flexibility of the plastics.

Claims

claims:

1. Highly charged anti-condensation masterbatches, which in plastic films lead to greater transparency through low water droplet formation, containing i) one or more anti-condensation products ii) one or more metallocene polyolefin waxes, iii) one or more waxes selected from polar and nonpolar

Non-metallocene polyolefin and its characteristic feature is that it contains anticondensants of at least 20 to 75% by weight and 25 to 80% by weight of wax based on the total weight of the masterbatch, wherein the wax is at least 50% Wt .-% polypropylene metallocene wax, based on the weight of the wax portion.

2. Masterbatch according to claim 1, characterized in that the waxes of the components ii) and iii) melt at temperatures in the range of 80 to 170 ⁰ C.

3. Masterbatch according to claim 1 or 2, characterized in that the polypropylene metallocene wax 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, between 30 to 80 000 mPa-s, preferably from 40 to 35,000 mPas, in particular from 50 to 10,000 mPas.

4. Masterbatch according to one or more of claims 1 to 3, characterized in that it contains 20 to 75 wt .-% of a polyglycerol or other Antikondensationsmittels and 25 to 80 wt .-% of the metallocene polyolefin wax, 0.1 to 30 wt .-%, preferably 0.5 to 25 wt .-% of one or more non-metallocene waxes.

5. Masterbatch according to one or more of claims, characterized in that as non-condensing nonionic surfactants such Glycerol, polyglycerol, sorbitan esters, ethoxylated sorbitan esters or mixtures thereof, as well as combination with distilled monoglyceride.

6. Masterbatch according to one or more of claims 1 to 5, characterized in that one or more non-metallocene

Polyolefin waxes are selected from nonpolar and 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).

7. Masterbatch according to one or more of claims 1 to 6, characterized in that in addition to the predominantly or completely amorphous polypropylene metallocene wax one or more metallocene copolymer waxes of propylene and 0.1 to 50 wt .-% of one or more further Contains monomers selected from ethylene and branched or unbranched 1-alkenes having 4 to 20 carbon atoms.

8. Masterbatch according to one or more of claims 1 to 7, characterized in that it has a very good compatibility with polymers such as Pofyolefinen, Ethyfen-Vinyiacetat copolymers (EVA), polyvinyl chloride (PVC), polyolefin blends, polyethylene terephthalate ( PET), polybutylene glycol terephthalate (PBT) and their copolyesters, as well as special polymers.

9. A process for preparing a masterbatch according to one or more of claims 1 to 8, characterized in that a) the individual components are mixed cold or b) can be dispensed with a mixture of components, if on the machine direct incorporation of the active ingredient is possible and that then the homogenization of the individual components takes place in an extruder.

10. The method according to claim 9, characterized in that following the homogenization, a granulation via strand and Kopfgranulierung or spraying takes place.

11. Use of a masterbatch according to one or more of claims 1 to 8 for the production of clear plastic films.