WO2008046535A1

WO2008046535A1 - Adhesive composition based on metallocene waxes

Info

Publication number: WO2008046535A1
Application number: PCT/EP2007/008690
Authority: WO
Inventors: Reinhold Kling
Original assignee: Clariant International Ltd
Priority date: 2006-10-18
Filing date: 2007-10-06
Publication date: 2008-04-24
Also published as: DE102006049090A1

Abstract

Polyisobutene composition comprising a high proportion of liquid, highly viscous polyisobutene, wherein the quantitatively greater proportion is a metallocene wax, and which optionally comprises further waxes, for example polar or nonpolar non-metallocene polyolefin waxes. All polyolefin waxes together make up at least 30% by weight of the formulation and melt between 80 and 170°C. The inventive active ingredient composition has reduced dusting and is used for masterbatch production.

Description

description

Adhesive composition based on metallocene waxes

The present invention relates to a highly charged adhesive composition, primarily polyisobutene. With these substances, the adhesion of plastic films with each other is significantly increased, the bond strength can be adapted to the needs.

More particularly, the invention relates to the use of copolymeric low molecular weight waxes for the preparation of such compositions wherein the waxes are prepared by metallocene catalysts having a low dropping point, high transparency and low viscosity. The use of these waxes, the incorporation of polyisobutene or similar substances, 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 preparing the compositions, despite this high loading, strand granulation, which is the common procedure for many masterbatch producers, can be used. But it can also be used in certain cases an underwater pelletizing.

Plastic films are added to polyisobutylene to improve adhesion significantly. The content ranges between 3 and 7 wt .-%, the addition of the additive takes place directly on the blown film. With a special dosing device, the liquid polyisobutylene is pumped through the screw of the single-screw extruder into the plastic melt. The addition of the polyisobutylene in the form of a masterbatch can not take place so far, since the polyisobutylene content in the end use is relatively high. Previous attempts to prepare such polyisobutylene compositions were not very attractive due to the low active ingredient content. Such compositions are subject to high demands in the art:

The incorporated products should be optimally distributed, they should be present only limited to the surface, so that there are small clumping tendencies, with the highest possible dosage 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, granulated and pulverulent highly charged liquid preparations:

The waxes used can be cold mixed and added via the main feed of the extruder. The polyisobutene is expediently introduced into the machine via appropriate metering units. 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 containing polyethylene, polypropylene or ethylene vinyl acetate copolymer, etc. The disadvantage of these polymer blends is that the polymeric fraction permits only a relatively limited addition of short-chain components. If the saturation range is exceeded, and this can often already be below 10%, separation of polymer and the additive polyisobutene occurs.

In JP-08 053 549 a polyolefin masterbatch is presented which contains liquid modifiers and their preparation. As a liquid product 12-hydroxystearic acid is added in lower dosages, the end use is for antifogging films.

EP-1 644 432 describes a carrier which can be loaded with liquid media. The surface is porous and hygroscopic. All masterbatches hitherto used in practice, if they have a high active ingredient content, have been produced with a complex raw material and a very special process, which leads to significantly higher costs.

Usually, the charge of a preparation prepared by conventional methods is around 10%, since higher charges are not possible due to the large viscosity differences from polymer to active substance. A heterogeneous distribution of the component is not possible, this leads to reduced mechanical properties, such. reduced strand strength of the compositions produced.

One way to increase the drug content would theoretically be the use of special polymers that flow easily, which are easier to process at lower temperatures and thus allow a higher polyisobutene content. However, polymers that have this property pattern generally have higher purchase costs.

Another possibility would be the use of highly porous polymer carriers which, thanks to this special surface shape, can more easily absorb the products. This special product form also has significantly higher costs and also requires a heatable vacuum chamber for further processing in order to ensure the absorption of liquid components, which in turn is associated with comparatively high investment costs.

The object of the present invention was to load adhesive composition with the highest possible proportion of liquid, low-melting or low-viscosity polyisobutene or similar products, so as to accomplish the production of plastic components such as films with increased adhesion economically and ecologically advantageous with a uniform composition and to produce products of high quality. A conventional polymeric carrier should be dispensed with as far as possible. As a result, drug compositions can be produced with a significantly higher active ingredient content. In addition, such preparations can be incorporated into a wider variety of polymers with different chemical composition, since less compatibility problems occur due to the high amount of active ingredient, as well as through the use of the wax component. The wax component also allows for easier incorporation and distribution in the polymers. This object is achieved according to the invention by incorporating the adhesive components in a mixture of metallocene waxes or a mixture of metallocene wax with Ziegler wax. The main constituent of the wax carrier is a metallocene wax. Metallocene wax or metallocene polyolefin waxes are by definition waxes prepared in the presence of metallocenes as a catalyst. The composition thus prepared is compounded by extrusion.

The present invention is an uploaded

I) one or more types of polyisobutene, as adhesive ii) one or more metallocene polyolefin waxes iii) optionally one or more waxes selected from polar and nonpolar non-metallocene polyolefin waxes which comprise polyisobutene in one Amount of at least 15 to 70 wt .-% and at least 25 wt .-% wax, based in each case on the total weight of the composition. Preferably, the inventive

Composition of at least 50% by weight of polypropylene metallocene wax, based on the total weight of the composition.

The metallocene polyolefin waxes serve both as adhesion promoters, such as Licocene ^® PPA 330, or as a carrier. The active ingredient composition according to the invention thus has a particularly high polyisobutene and filler content, has 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 170 ^° C., in the range from 40 to 80,000 mPa · s, preferably 45 to 35,000 mPa · s, in particular from 50 to 10,000 mPa · s. All waxy constituents of the composition melt in the temperature range between 80 and 17O ⁰ C.

Compositions preferred according to the invention comprise from 15 to 70% by weight, preferably from 15 to 65% by weight, of an organic polyisobutene or a similar adhesive and from 30 to 85% by weight, preferably from 35 to 85% by weight, of the metallocene polyolefin wax, 0 to 20 wt .-%, in particular 0.1 to 18 wt .-%, preferably 0.5 to 15 wt .-% of one or more non-metallocene waxes. In addition, the composition of the invention may, if necessary, fillers such as silicas, zeolites, nanoclays, silicates, such as aluminum silicates, sodium silicates, calcium silicates, or chalk, talc in an amount between 0 to 25 wt .-%, based on the total weight of

Composition. In addition, other additives such as phenols, phosphites, phosphonites, from 0 to 5 wt .-%, but also UV absorbers, HALS (Hindered Amide Light stabilizer), nickel stabilizers or combinations thereof, in proportions of 0 to 25 wt .-% be included.

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 having 4 to 20 carbon atoms with a dropping point (Ring / Sphere) between 80 and 17O ⁰ C.

The metallocene waxes prepared in the presence of metallocene as a catalyst are largely or completely amorphous and may additionally be polar modified as needed. 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, measured at a temperature of 140 ⁰ C, as well as non-polar, but also polar non-metallocene waxes having a dropping point in the range of 90 to 130 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 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.

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 ₆ - Ci _0, preferably C ₆ -C ₈ -aryl group, a C ₆ -C _O -, preferably C ₆ -C ₈ aryloxy group, a C2-C10, preferably C ₂ -C ₄ alkenyl group, a C ₇ -C 4 ₀ - , preferably C7-C ₁₀ arylalkyl group, a C ₇ -C ₄₀ -, preferably C ₇ -C ₂ alkylaryl group, 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 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 CrC ₄ alkyl group, a C ₆ -C ₀ -, preferably C ₆ -C ₈ -aryl group, a C ₁ -C ₁₀ -, preferably Ci-C ₃ alkoxy group, a -NR ¹ V, -SR ¹⁶ -, -OSiR ¹ V, -SiR ¹ V or -PR ¹⁶ ₂ -Ftest, wherein R ^{16 is} a CrC ₁₀ -, preferably CiC ₃ alkyl group or Cβ-C-io-, preferably C ₆ -C ₈ -aryl group or in the case Si or P also containing radicals is 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

R ¹⁷ R17 R17 R ¹⁷ R17

O

17 R 17 R 17 R 17

M ^ M " ^■ M '

18 R 18, 18 R 18

- = DBDR1 ¹ ? ^/ , - = A 1 IR> 1 ^η 7 ', -Ge-, -Sn-, -O-, -S-, = SO, = SO ₂ , = NR ¹⁷ , = CO, = PR "or = P ( O) R »1" 7, wherein R> 1 "7, R ¹⁸ and R ^{19 are the} same or different and a hydrogen atom, a halogen atom, preferably a fluorine, chlorine or Bromatom, a Ci-C ₃ O, preferably Ci-C ₄ alkyl, in particular methyl group, a Ci-Cio-fluoroalkyl, preferably CF ₃ group, a C ₆ -Cio-fluoroaryl, preferably pentafluorophenyl, a C ₆ -C ₀ -, preferably Cβ-Cs-aryl group, a C1-C1 ₀ -, preferably Ci_C ₄ alkoxy, in particular methoxy, C ₂ -C _0, preferably C ₂ -C ₄ alkenyl group, a C ₇ - C ₄₀ -, preferably C ₇ -C ₀ aralkyl group, a C ₈ -C ₄₀ - mean, preferably C ₈ -C ₂ -arylalkenyl group or a C ₇ -C _40, preferably C ₇ -C ₁₂ -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 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 name mentioned for R ¹⁷

Meaning, 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, bis (indenyl) zirconium dichloride, bis (methylcyclopentadienyl) zirconium dichloride, bis (n-butylcyclopentadienyl) zirconium dichloride, bis (octadecylcyclopentadienyl) zirconium dichloride, bis (pentamethylcyclopentadienyl) zirconium dichloride, bis ^ rimethylsilylcyclopentadienyOzirkoniumdichlorid, Biscyclopentadienylzirkoniumdibenzyl, Biscyclopentadienylzirconiumdimethyl, bistetrahydroindenylzirconiumdichloride, dimethylsilyl-θ-fluorenylcyclopentadienylzirconiumdichloride, dimethylsilylbis-1- (2,3,5-trimethylcyclopentadienyl) zirconium dichloride _> dimethylsilylbis-1- (2 ₎ 4-dimethylcyclopentadienyl) zirconium dichloride, dimethylsilyl-bis-1- (2-methyl-4,5-benzoindenyl) zirconium dichloride, 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 di chloride, dimethylsilyl-bis-1- (2-methyltetrahydroindenyl) zirconium dichloride, dimethylsilyl-bis-1-indenylzirconium dichloride, dimethylsilyl-bis-1-indenylzirconium dimethyl, dimethylsilyl-bis-1-tetrahydroindenylzirconium dichloride, diphenylmethylene---fluorenylcyclopentadienylzirconium dichloride, diphenylsilyl-bis-1 -indenylzirkoniumdichlorid,

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-tetrahydroindenylzirkoniumdichlorid,

Indenyl-cyclopentadienyl-zirconium dichloride isopropylidene (1-indenyl) (cyclopentadienyl) zirconium dichloride, isopropylidene (9-fluorenyl) (cyclopentadienyl) zirkoniumdichloricl,

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 are suitable

Cocatalysts used. Suitable cocatalysts for metallocenes of the formula I are organoaluminum compounds, in particular aluminoxanes or else aluminum-free systems such as R ²⁰ _x NH _4-x BR ²¹ _4, R ²⁰ χPH ₄ - _x BR 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 form a ring together with the atom connecting them, and the radicals R ²¹ are identical or different, preferably identical, and represent Cβ-Ci _B -aryl, which is represented by alkyl, haloalkyl or fluorine may be substituted. 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. Small amounts of phenols and phosphites or phosphonites of from 0 to 5% by weight may additionally be added to the polyisobutene compositions according to the invention. In UV stabilizers, this can be done to a much greater extent from 0 to 25 wt .-%. As UV stabilizers mainly three different product classes can be used, sterically hindered amines (HALS), nickel quenchers and / or UV absorbers. Also possible are combinations of different HALS, nickel quenchers or UV absorbers and mixtures of the products with one another. This applies to all products listed in "Plastics Additives Handbook", δ.Edition (2000), Hanser-Verlag, pages 114-136.

Likewise, fillers and auxiliaries such as silica, nanoclays, silicates, zeolites, chalk and talcum can also be used.

As polyisobutene, low molecular weight polyisobutenes or highly reactive polyisobutene are used, in a molecular weight range M _n of about 500-5,000. These are mainly chlorine-free, clear, colorless, highly viscous liquids. Also modifications with oils are possible.

The required proportion of metallocene waxes depends on the additive-matrix exchange reaction, the surface structure of the polyisobutene, the surface structure of the finished article, the processing properties and the granule strengths of the intermediates and the specification of the properties of the finished material.

The present invention also relates to a process for producing the polyisobutene 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 can be contained, for example, as granules, flakes, powders or fine powder or 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 feed of the extruder, the polyisobutene is optionally introduced into the machine via corresponding side feeds. Subsequently, a melt mixture can be carried out in a suitable extruder or in kneaders. This is followed by granulation, grinding or spraying.

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 or underwater granulation is advantageously used to prepare the compositions according to the invention.

Examples:

The product characteristics are determined by the following methods:

Drop point ISO 2176 // ASTM D 3954 ( ⁰ C)

Viscosity DIN 53018 (mPa-s) Density IS0 1183 (g / cccm)

Molar mass is determined by GPZ method.

The polyolefins a) and b) 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 A 0 384 264 (general rule Ex. 1-16).

The different softening points and viscosities were determined by

Variation of the ethylene input and the polymerization temperature set.

Table 1: Metallocene polyolefin waxes used

Also, predominantly or completely amorphous copolymers, for example, from branched or unbranched 1-olefins such as propylene, 1-butene, etc., optionally with ethylene, can be used. Such generally liquid at room temperature and more or less viscous polyolefins can be prepared for example with Ziegleroder Metallocenkatalysatoren. Examples of such copolymers prepared with metallocene catalysts can be found in EP 200 351, EP 586 777 or EP 1 554 320. - Heat of fusion 0 to 10 J / g

Molar mass Mn 300 to 10,000 g / mol

- Glass transition temperature <-20 ⁰ C

polar, oxidized PE wax:

Drop point Viscosity at 120 ⁰ C Acid number Density [ ⁰ C] [mPa-s] [mg KOH / g] [g / cm ³ ]

about 120 about 3,000 17 0,92

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

As a mixture for the extrusion: Mixer: Hentschelmischer, content 5 liters

Approach: according to the examples given below Premixing: approx. 2 to 4 min. at U = 600 / min

The addition of polyisobutene was carried out via suitable side feeders.

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 compositions were prepared by methods described above. As metallocene waxes, the above described wax was used in each case: 1) 42.5% by weight of polyisobutene,

40% by weight of metallocene wax PP a + b 5% by weight of polyolefin wax a 10% by weight of silica filler

2) 50% by weight of polyisobutene

35% by weight of metallocene wax PP a 15% by weight of silica filler

Application examples:

The additive compositions according to Preparation Examples 1 to 2 were partially premixed and extruded in a co-rotating twin screw with a special screw design and with a low temperature image. The compositions could be loaded higher than usual in the market, the direct addition of the polyisobutene at the end processing machines as the blown film extruder can be dispensed with. It has been noted an increased adhesive force of plastic parts with each other or to other surfaces.

Claims

claims:

I) one or more types of polyisobutene, as adhesive ii.) One or more metallocene polyolefin waxes and iii. Optionally one or more waxes selected from polar and nonpolar

Non-metallocene polyolefin waxes containing polyisobutene in an amount of at least 15 to 70% by weight and at least 25% by weight of wax, based in each case on the total weight of the composition.

Composition according to Claim 1, characterized in that the wax contains at least 50% by weight of polypropylene metallocene wax, based on the weight of the composition.

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

4. The composition according to one or more of claims 1 to 3, characterized in that the metallocene polyolefin 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 40 and 80,000 mPa- s owns.

5. Composition according to one or more of claims 1 to 4, characterized in that this 15 to 70 wt .-% of an organic polyisobutene, 30 to 85 wt .-% of a metallocene polyolefin wax and 0.1 to 20 wt. % of one or more non-metallocene waxes.

6. Composition according to one or more of claims 1 to 5, characterized in that they are still fillers or other additives in one Amount between 0 to 25 wt .-%, based on the total weight of the composition.

7. The composition according to one or more of claims 1 to 6, characterized in that they additionally as additives UV absorber, HALS

(Hindered Amide Light Stabilizers), nickel stabilizers or combinations of these.

8. The composition according to one or more of claims 1 to 7, characterized in that at least one polyisobutene of organic

Products was selected.

9. Composition according to one or more of claims 1 to 8, characterized in that low molecular weight polyisobutenes or highly reactive polyisobutenes having an average molecular weight Mn of 500 - 5,000 are used, optionally as mixtures with oils.

10. The composition according to one or more of claims 1 to 9, characterized in that these additional additives, such as phenols, phosphites and phosphonites in amounts between 0 and 5 wt .-% or proportions of fillers such as chalk and / or talc in Contains amounts between 0 and 25 wt .-%.

11. Composition according to one or more of claims 1 to 10, characterized in that one or more non-metallocene

Polyolefin waxes are selected from EVA waxes and nonpolar or polar waxes having a dropping point below 130 ⁰ C and a viscosity of less than 30,000 mPa-s (measured at 140 ⁰ C).

12. The composition according to one or more of claims 1 to 11, characterized in that in addition to a polypropylene metallocene wax one or more metallocene copolymer waxes of propylene and 0.1 to 50 wt .-% of one or more other monomers selected from Contains ethylene and branched or unbranched 1-alkenene having 4 to 20 carbon atoms.

13. A process for producing a polyisobutene composition according to one or more of claims 1 to 12, characterized in that the individual components are mixed cold and then the homogenization of the individual components takes place in an extruder or kneader.

14. The method according to claim 13, characterized in that the products are used as granules, flakes, powder or as fine-grain mixture or in liquid form.

15. The method according to claim 13, characterized in that the premixing of the individual components takes place at room temperature in a suitable mixing apparatus.

16. Use of a polyisobutene according to one or more of claims 1 to 12 for increasing the adhesion of plastic parts with each other.