DE19946519A1 - Process for the continuous production of stabilizer dispersions - Google Patents

Abstract

The invention relates to a process for the preparation of stabilizer dispersions for stabilizing plastic dispersions, comprising DOLLAR A a) a dispersant, the liquor A, DOLLAR A b) at least one compound B which is active as a surfactant, DOLLAR A c) optionally at least one phenolic antioxidant C, and DOLLAR A d) optionally at least one sulfur- or phosphorus-containing costabilizer D, DOLLAR A e) optionally further auxiliaries and / or additives, DOLLAR A where at least one of components C or D is present in the stabilizer dispersion and components B, C and D in powder form or can be in liquid form, and components A to D are continuously mixed by means of a mixer and homogenized in a dispersing element, and the stabilizer dispersion ready for use is removed continuously from the dispersing element. DOLLAR A Furthermore, the invention relates to the use of a device constructed from a housing in which one or more rotors in associated stators rotate at high speed on a shaft driven by a motor, for the continuous production of stabilizer dispersions.

Description

The present invention relates to a method for producing stabilizers satellite dispersions for stabilizing plastic dispersions and the ver use of an apparatus for performing the method.

For stabilizing plastic dispersions, especially emulsions rubbers and emulsion gums used as dispersions for the various applications (emulsion paints, paper coating agents, leather and textile finishing, adhesive raw materials) are used, and those after Isolation of the solid as an impact modifier in thermoplastic Molding compounds are incorporated, against oxidative influences are more common wise stabilizer dispersions used, which contain phenolic antioxidants In general, the phenolic antioxidants come in combination with costabilizers such as organic sulfur compounds and / or organic phosphorus compounds are used. Are also conceivable Combinations with other additives such as light stabilizers, antistatic agents and other common additives.

Such predominantly aqueous dispersions often have to be carried out with great effort multi-stage process can be produced. The one in the stabilizer dispersions Components used can be solid or liquid at room temperature. Each according to the consistency of the input materials, the manufacturing process for the Stabili satellite dispersions can be adjusted. Manufacturing is particularly problematic  of stabilizer dispersions if one or more of the components have one have a very high melting point (<100 ° C). Here the component must be as Powder is incorporated into a melt from the other components, but not always guarantee a homogeneous distribution of the components is accomplished.

EP-A 0 439 427 relates to storage-stable, non-sedimenting emulsions, the anti contain oxidants, e.g. B. for use in stabilizing emulsions polymers against oxidative influences. The emulsions are prepared by heating or when the components are solid at room temperature acts, melting of the components. The aqueous phase, optionally with other additives, is gradually added, one Temperature of 60 to 100 ° C is maintained. It forms a water-in-oil Emulsion, which are converted into a very fine emulsion by stirring can. By further adding water, the emulsion inverts to the desired one Oil-in-water emulsion.

EP-A 0 488 550 relates to stabilizer compositions containing at least two hindered phenols, one less hindered than the other, a sulfide and optionally a surfactant, to form an emulsion of the Allow composition. According to the examples, these are stabili sator compositions prepared by the phenols and the sulfide are melted together and a surfactant-containing aqueous solution under vigorous stirring is added to the melt. More water is added and the stabilizer compositions are then ready for use.

These processes for the preparation of stabilizer dispersions have the disadvantage that that the production in several process steps (melting and Water is added). It must be heated and cooled so that the Production time is considerable.  

The object of the present invention is to provide an uncomplicated one Process for the preparation of stabilizer dispersions, which is characterized by short Mixing times without lengthy heating up and cooling down times, and that obtaining the finished stabilizer dispersion in one process step allowed.

The object is achieved by a process for the preparation of stabilizer dispersions for stabilizing plastic dispersions containing

• a) a dispersant, the liquor A,
• b) at least one compound B effective as a surfactant,
• c) optionally at least one phenolic antioxidant C,
• d) optionally at least one containing sulfur or phosphorus Costabilizer D,
• e) optionally further auxiliaries and / or additives

where at least one of components C or D in the stabilizer dispersion is present and components B, C, D and E are in powder or liquid form can.

The method according to the invention is characterized in that the components A to E continuously mixed by means of a mixer and in one Dispersing device are homogenized and the ready-to-use stabilizer dispersion is continuously removed from the dispersing element.

So far, only discontinuous ones from the prior art Process for the preparation of stabilizer dispersions known, since for the manufacture development of homogeneous stabilizer dispersions for heating and cooling phases homogeneous distribution of the components used are required.  

By intensive mixing of the components in a dispersing organ it is however, managed to achieve the mixing effect to obtain a homogeneous stabilisa door dispersion without a temperature program in a continuous process to reach.

This inventive method leads to a tightening of the time Manufacturing process for stabilizer dispersions and a process technical simplification. Furthermore, the space requirement is reduced over a batch process because large storage tanks at a con there is no need for continuous procedural management.

The stabilizer dispersions prepared according to the invention preferably contain

• 0.1 to 20% by weight, preferably 0.5 to 15% by weight, particularly preferably 0.5 up to 10% by weight, based on the total mass of the stabilizer dispersion, at least one compound B effective as a surfactant,
• 0 to 65% by weight, preferably 0.1 to 59.9% by weight, particularly preferably 0.5 up to 59.5% by weight, based on the total mass of the stabilizer dispersion, at least one phenolic antioxidant C,
• 0 to 65% by weight, preferably 0.1 to 59.9% by weight, particularly preferably 0.5 up to 59.5% by weight, based on the total mass of the stabilizer dispersion, at least one sulfur- or phosphorus-containing costabilizer D,
• 0 to 40% by weight, preferably 0.005 to 30% by weight, particularly preferably 0.01 up to 20% by weight, based on the total mass of the stabilizer dispersion, further auxiliaries and / or additives,
• - And such an amount of the dispersant, the fleet A, that the Total mass of the stabilizer dispersion is 100% by weight.

Dispersant, fleet A

In general, the liquor used is water, preferably deionized water, used. This can be used alone or in a mixture with other auxiliaries and Additives or together with the compound B, or a salt or a base, which together with a suitable acid to a can be implemented as a surfactant-active compound (B).

The liquor can also contain liquids other than water. You can use Water-miscible or water-immiscible liquids are used become. Suitable liquids are, for example, water-miscible Alcohols, ketones or water-immiscible aliphatic or aromatic Solvents such as esters and aromatic hydrocarbons such as toluene. It can also the monomers of the plastic dispersion to be stabilized be used. It is also possible to use a combination of water and one or use several of the liquids mentioned as a fleet.

In a preferred embodiment, the liquor is water, optionally with further auxiliaries and / or additives or a salt, such as already explained. The following is for the sake of simplicity water or one aqueous dispersion, without this being a limitation to water should be understood as a fleet.

Substance effective as a surfactant, B

As a surfactant effective, surface-active substances for emulsification tion / dispersion are usually used for this purpose protective colloids and emulsifiers. The surfactants are generally in an amount of 0.1 to 20 wt .-%, preferably 0.5  to 15 wt .-% and particularly preferably from 0.5 to 10 wt .-%, based on the Total mass of the stabilizer dispersion used.

Suitable protective colloids are, for example, polyvinyl alcohols, cellulose de copolymers containing derivatives or vinyl pyrrolidone. A detailed description Further suitable protective colloids can be found in Houben-Weyl, Methods of Organic Chemistry, Vol. XIV / 1, Macromolecular Substances, Georg- Thieme-Verlag, Stuttgart, 1961, pp. 411 to 420. Also mixtures of emulsifiers and / or protective colloids can be used. Preferably as Surface-active substances used exclusively emulsifiers, the rela tive molecular weights in contrast to the protective colloids usually less than 2000. They can be both anionic, cationic and not be ionic in nature. When using mixtures surfactant Substances must be compatible with each other, what in case of doubt it can be checked using a few preliminary tests. Ge Common emulsifiers are e.g. B. ethoxylated mono-, di- and trialkylphenols with 4 to 9 carbon atoms in the alkyl radical (degree of ethoxylation (EO degree): 3 to 50), ethoxylated fatty alcohols with 8 to 36 carbon atoms in the alkyl radical (EO- Grade: 3 to 50), fatty alcohol sulfonates, sulfosucchinates, ε-sulfonates, resin soaps as well as alkali and ammonium salts of alkyl sulfonates with 8 to 12 Carbon atoms in the alkyl radical and salts of higher fatty acids with 10 to 30 Carbon atoms in the alkyl radical. Other suitable emulsifiers can be found in Houben-Weyl, Methods of Organic Chemistry, Vol. XIV / 1, Macromolecular Stoffe, Georg-Thieme-Verlag, Stuttgart 1961, pp. 192 to 206.

Other suitable anionic emulsifiers are bis (phenylsulfonic acid) ether or their alkali metal or ammonium salts which carry a C ₄ -C ₂₄ -alkyl group on one or both aromatic rings. These compounds are known for example from US 4,269,749.

Compounds which are particularly effective as surfactants are sodium and potassium salts of arylalkyl and alkyl sulfonates or of fatty acids with 10 up to 18 carbon atoms used.

In a further preferred embodiment, the surfactant is effective Substance based on a fatty acid in situ with an alkali metal hydroxide in the corresponding salt of the fatty acid converted, which in the emulsion as Surfactant is effective. Instead of alkali metal hydroxides, alkali metals can also be used tall carbonates or alkali metal bicarbonates are used. Than longer chain fatty acids are preferred oleic acid, stearic acid and palmitic acid used.

Phenolic Antioxidants C

The phenolic antioxidants are generally present in an amount of 0 up to 65% by weight, preferably from 0.1 to 59.9% by weight, particularly preferably from 0.5 up to 59.5% by weight, based on the total mass of the stabilizer dispersion, used.

Suitable phenolic antioxidants can be solid or at room temperature be fluid. In the method according to the invention, it is in particular possible Use antioxidants that have a melting point above 100 ° C have. Even substances that cannot be processed in the melt but have to be processed as powder, can be processed using the The inventive method to a homogeneous stabilizer dispersion without complex procedures are processed.

Examples of suitable phenolic antioxidants are compounds of the general formula I (taken from: US 5,196,142).

wherein
R ^{1 is} C ₁ -C ₁₈ alkyl, C ₅ -C ₁₂ cycloalkyl, C ₁ -C ₁₄ alkyl substituted cycloalkyl with 5 to 12 carbon atoms in the ring, phenyl or C ₇ - to C ₉ aralkyl,
R ² denotes hydrogen, C ₁ -C ₁₈ alkyl, C ₅ -C ₁₂ cycloalkyl, C ₁ -C ₄ alkyl, substituted cycloalkyl with 5 to 12 carbon atoms in the ring, phenyl or C ₇ -C ₉ aralkyl,
R ^{3 represents} hydrogen or methyl and
n is 1 or 2, and
if n = 1, A means

wherein
x = 0 to 6,
R ⁶ denotes hydrogen, C ₁ -C ₂₃ alkyl, C ₅ -C ₁₂ cycloalkyl, C ₁ -C ₄ alkyl, substituted cycloalkyl with 5 to 12 carbon atoms in the ring,
R ^{4 is} a hydroxy group and
R ^{5 is} hydrogen
mean or
if n = 2, A means

where x = 0 to 6,
X represents oxygen or sulfur,
a is 2 to 6, and
b is 3 to 40,
R ^{4 is} a hydroxy group and
R ^{5 is} hydrogen, or, if n = 2,

or denotes an unsubstituted or a C ₁ -C ₂₀ alkyl-substituted C ₁ -C ₂₀ alkylene radical, and
R ^{4 is} a hydroxy group and
R ^{5 is} hydrogen or
R ^{5 is} a hydroxy group and
R ^{4 is} hydrogen or C ₁ -C ₄ alkyl, and
R ^{1 is} hydrogen and
R ^{7 is} C ₁ -C ₁₈ alkyl, unsubstituted, hydroxy-substituted or C ₁ -C ₁₈ alkyl-substituted phenyl or phenyl- or hydroxyphenyl-substituted C ₁ -C ₁₈ alkyl.

Antioxidants of the general formula Ia are preferred

used where
R ¹ , R ² , R ³ , R ⁵ and R ^{6 have} the meanings already defined and x = 2 or 3.

Compounds of the general formula Ia are particularly preferably used, in which the group - (C _x H _2x ) -, -CH ₂ -CH ₂ - or

mean.

Further suitable phenolic antioxidants are, for example, US Pat. No. 5,196,142 and EP 0 669 367.

Other suitable compounds are compounds of the formula (II)

wherein R _{1 is} methyl or ethyl, R _{2 is} C ₂ -C ₂₀ alkyl and R _{3 is} C ₁ -C ₄ alkyl; or compounds of the formula (III)

wherein R _{3 is} C ₁ -C ₂ alkyl, R _{4 is} tert-butyl or cyclohexyl, L -CH ₂ - or tricyclo [5.2.1.0 ^2,6 ] decan-3,3-ylene and n ≧ 1.

R ₂ means e.g. B. ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl hexadecyl, octadecyl, nonadecyl, icosyl, xx, docosyl, tricosyl, tetracosyl, pentacosyl, hexacosyl , Octacosyl, nonacosyl or triacolyl.

A preferred meaning of R ₂ is C ₃ -C ₃₀ alkyl, e.g. B. C ₉ -C ₁₃ alkyl or C ₁₀ - C ₃₀ alkyl. R ₂ as C ₁₂ -C ₁₈ alkyl is particularly preferred.

R ₃ means methyl, ethyl, propyl, isopropyl, sec-butyl or tert-butyl. R ₃ is particularly preferably methyl.

n is preferably 1 or 1-5.

Of interest are compositions in which the compound of formula I

is.

Also of interest are compositions which contain mixtures of different radicals R ₂ .

Also of interest are compositions in which the compound of the formula II

(average molecular weight: 600-700) or

according to EP-A 0 669 367.

The compounds of formula (II) can also be used as a mixture of Individual connections are available.

The compounds of the formulas I and II are generally prepared known methods, as also described in "Stabilizing plastics against  Light and Heat "by J. Voigt, Springer Verlag Berlin-Heidelberg-New York, 1966.

According to EP-A 0 669 367, a mixture of components b) and c) is one easy-to-handle emulsion, while component c) previously used alone is difficult to emulsify. These difficulties can arise with the method according to the invention can be overcome.

In addition to compounds of the formulas (II) and (III), the compounds according to the invention Compositions additionally contain conventional additives, such as wise:

Alkylated monophenols, e.g. B. 2,6-di-tert-butyl-4-methylphenol, 2-butyl-4,6- dimethylphenol, 2,6-di-tert-butyl-4-ethylphenol, 2,6-di-tert-butyl-4-n-butyl phenol, 2,6-di-tert-butyl-4-isobutylphenol, 2,6-di-cyclopentyl-4-methylphenol, 2- (α-methylcyclohexyl) -4,6-dimethylphenol, 2,6-di-octadecyl-4-methylphenol, 2,4,6-tri-cyclohexylphenol, 2,6-di-tert-butyl-4-methoxymethylphenol, 2,6-di nonyl-4-methylphenol, 2,4-dimethyl-6- (1'-methyl-undec-1'-yl) phenol, 2,4- Dimethyl-6- (1'-methyl-heptadec-1'-yl) phenol, 2,4-dimethyl-6- (1'-methyl-tridec- 1'-yl) phenol and mixtures thereof.

Alkylthiomethylphenols, e.g. B. 2,4-di-octylthiomethyl-6-tert-butylphenol, 2,4-di octylthiomethyl-6-methylphenol, 2,4-di-octylthiomethyl-6-ethylphenol, 2,6-di dodecylthiomethyl-4-nonylphenol.

Hydroquinones and alkylated hydroquinones, e.g. B. 2,6-di-tert-butyl-4-methoxy phenol, 2,5-di-tert-butyl-hydroquinone, 2,5-di-tert-amyl-hydroquinone, 2,6- Diphenyl-4-octadecyloxyphenol, 2,6-di-tert-butyl-hydroquinone, 2,5-di-tert-butyl- 4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxy phenyl stearate, bis (3,5-di-tert-butyl-4-hydroxyphenyl) adipate.  

Hydroxylated thiodiphenyl ethers, e.g. B. 2,2-thio-bis- (6-tert-butyl-4-methylphenol), 2,2'-thio-bis- (4-octylphenol), 4,4'-thio-bis- (6-tert-butyl-3-methylphenol), 4,4'- Thio-bis- (6-tert-butyl-2-methylphenol), 4,4'-thio-bis- (3,6-di-sec.-amylphenol), 4,4'-bis (2,6-dimethyl-4-hydroxyphenyl) disulfide.

Alkylidene bisphenols, e.g. B. 2,2'-methylene-bis- (6-tert-butyl-4-methylphenol), 2,2'-methylene-bis- (6-tert-butyl-4-ethylphenol), 2,2'-methylene-bis- [4-methyl-6- (α-methylcyclohexyl) phenol], 2,2'-methylene-bis- (4-methyl-6-cyclohexylphenol), 2,2'-methylene-bis- (6-nonyl-4-methylphenol), 2,2'-methylene-bis- (4,6-di-tert-bu tylphenol), 2,2'-ethylidene-bis- (4,6-di-tert-butylphenol), 2,2'-ethylidene-bis- (6-tert- butyl-4-isobutylphenol), 2,2'-methylene-bis- (6- (α-methylbenzyl) -4-nonylphenol), 2,2'-methylene-bis- [6- (α, α-dimethylbenzyl) -4-nonylphenol], 4,4'-methylene-bis- (2,6-di-tert-butylphenol), 4,4'-methylene-bis- (6-tert-butyl-2-methylphenol), 1,1- Bis (5-tert-butyl-4-hydroxy-2-methylphenyl) butane, 2,6-bis (3-tert-butyl-6-meth yl-2-hydroxybenzyl) -4-methylphenol, 1,1,3-tris- (5-tert-butyl-4-hydroxy-2- methylphenyl) butane, 1,1-bis (5-tert-butyl-4-hydroxy-2-methylphenyl) -3-n-dode cylmercaptobutane, ethylene glycol bis- [3,3-bis (3'-tert-butyl-4'-hydroxyphenyl) - butyrate], bis- (3-tert-butyl-4-hydroxy-5-methylphenyl) dicyclopentadiene, bis- [2- (3'-tert-butyl-2'-hydroxy-5'-methyl-benzyl) -6-tert-butyl-4-methyl-phenyl] tereph thalate, 1,1-bis (3,5-dimethyl-2-hydroxyphenyl) butane, 2,2-bis (3,5-di-tert-butyl) 4-hydroxyphenyl) propane, 2,2-bis (5-tert-butyl-4-hydroxy-2-methylphenyl) -4-n- dodecyl mercaptobutane, 1,1,5,5-tetra- (5-tert-butyl-4-hydroxy-2-methylphenyl) - pentane.

Phenolic antioxidants used with particular preference are octadecyl-3- (3,5-bis (1,1-dimethylethyl) -4-hydroxyphenyl) propionate, a butylated reac ion product of p-cresol and dicyclopentadiene, 1,1,3-tris (2'-methyl-4'- hydroxy-5'-tert-butylphenyl) butane, 2,2'-methylenebis (6- (1,1-dimethylethyl) 4- methylphenol and 4,4'-thio-bis (3-methyl-6-tert-butylphenol).  

The phenolic antioxidants can be used individually or as a mixture various antioxidants can be used.

Costabilizers D

The costabilizers are used in an amount of 0 to 65% by weight, preferably of 0.1 to 59.9% by weight, particularly preferably from 0.5 to 59.5% by weight, based on the total mass of the stabilizer dispersion used.

Organic phosphorus and / or sulfur-containing compounds are costabilizers suitable.

Suitable phosphites and phosphonites are e.g. B. triphenyl phosphite, Diphenylalkyl phosphites, phenyl dialkyl phosphites, tris (nonylphenyl) phosphite, Trilauryl phosphite, trioctadecyl phosphite, distearyl pentaerythritol diphosphite, tris (2,4-di-tert-butylphenyl) phosphite, diisodecylpentaerythritol diphosphite, bis- (2,4- di-tert-butylphenyl) pentaerythritol diphosphite, bis (2,6-di-tert-butyl-4-methyl phenyl) pentaerythritol diphosphite, bis-isodecyloxy-pentaerythritol phosphite, bis- (2,4- di-tert-butyl-6-methylphenyl) pentaerythritol diphosphite, bis- (2,4,6-tri-tert-butyl phenyl) pentaerythritol disphosphite, tristearyl sorbitol triphosphite, tetrakis (2,4-di- tert-butylphenyl) -4,4'-biphenylene-diphosphonite, 6-isooctyloxy-2,4,8,10-tetra-tert- butyl-12H-dibenzyl [d, g] -1,3,2-dioxaphosphocin, 6-fluoro-2,4,8,10-tetra-tert-butyl- 12-methyl-dibenz [d, g] -1,3,2-dioxaphosphocin, bis- (2,4-di-tert-butyl-6-methyl phenyl) methyl phosphite, bis (2,4-di-tert-butyl-6-methylphenyl) ethyl phosphite.

Suitable organic phosphorus compounds are preferably organic Phosphites. Aliphatic and aromatic phosphites can be used become. Examples of this are tris (monononylphenyl) phosphite, bis-nonylphenyl pentaerythritol diphosphite, bis-octadecanyl-pentyerythritol diphosphite, bis-tride canyl-pentaerythritol diphosphite, bis (2,4-di-tert-butylphenyl) pentaerythritol di phosphite, bis (2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphite, iso  propylidene bis (phenyl ditridecyl) diphosphite, butylidene bis (3-methyl-6-tert.- butylphenyl-ditridecyl) phosphite, tris (2,4-di-tert-butylphenyl) phosphite, a Ge mix of tris (mono- or bi-nonylphenyl) phosphite, tisnonylphenyl phosphite, Phenyl-didecanylphosphite, tris-decanylphosphite, triphenylphosphite, tris- (2,4- bis- (1,1-dimethylethyl) phenyl) phosphite, tertrakis (2,4-bis-1,1-dimethylethyl) phenyl-4,4'-diphenylene diphosphite.

Tris (2,4-bis (1,1-dimethylethyl) phenyl) phosphite, tisnonylphenyl phosphite tertrakis (2,4-bis-1,1-dimethylethyl) phenyl-4,4'-diphenylene diphosphite, bis are particularly preferred (2,4-di-tert-butylphenyl) pentaerythritol diphosphite and triphenyl phosphite used. These organic phosphites can be produced, for example, by the alkoxylation or aryloxylation of PCl ₃ from alcohols and phenols in the presence of a base.

Suitable sulfur compounds are preferably sulfides which have one or more of the following sulfide groups.

R'-CH ₂ -S-CH ₂ -R

wherein R and R 'independently of one another are an alkyl group of 1 to 20 carbon atoms or an alkyl alkanoate of the formula

with n = 0, 1 or 2.

In the sulfides preferably used, the alkyl group R 1 to 11 has preferably 7 to 11 carbon atoms and the preferred alkyl alkanoate group has 12 to 18 carbon atoms, where n = 0, 1 or 2. examples for suitable sulfides are dilauryl thiodipropionate, pentaerythritol tetrakis (octylthiopropionate), distearyl thiodipropionate, dimyristyl thiodipropionate,  Pentaerythriol tetrakis (β-laurylthiopropionate), 2,4-bis (n-octylthio) -6- (4'-hydroxy- 3 ', 5'-di-tert-butylanilion) -1,3,5-triazine, trimethylolpropane tris (octylthiopropio nat), trimethylolethane tris (octylthiopropionate), ethylene glycol bis (laurylthio propionate) and didodecyl monosulfide. 3,3'- Dilaury thiodipropionate and distearyl 3,3'-thiodipropionate.

Component E

In addition to components A to D, the stabilizer dispersions can be further Auxiliaries and additives included.

The auxiliaries and additives can both be suitable for the preparation of the To facilitate dispersion and improve its stability (soaps, Protective colloids, Pickering emulsifiers, bactericides, fungicides etc.) as well Improve properties of the products to be stabilized, such as light stabilizers for example from the group of hindered amines (HALS stabilizers, for example bis (2,2,6,6, tetramethyl-4-piperidyl) sebacate; Diester the Sebacic acid with 4-hydroxy-1,2,2,6,6-pentamethylpiperidine; Bis-N, N- (2,2,6,6- tetramethyl-oxy-piperidinyl-) N, N-bisformylhexamethylene diamine), benzotiazoles, such as 2- (2'-hydroxy-5'-methylphenyl) benzotriazole or 2- (2-hydroxy-3,5-bis (1,1- dimethylbenzyl) phenyl) 2H-benzotriazole; Bis (2-hydroxy-5-t-octyl- (benzotriazole- 2-yl) phenyl) methane; Cyanoacrylates such as ethyl 2-cyano-3,3-diphenyl acrylate or 2-ethyl-2-cyano-3,3-diphenyl acrylate; and benzophenones, such as 2,4- Dihydroxybenzophenone, 2-hydroxy-4-octoxybenzophenone, 2,2'-dihydroxy 4,4'dimethoxybenzophenone; as well as antstatic components like that Are skilled in the art, for example block copolymers of ethylene oxide Propylene oxide in different compositions, as described for example below are marketed under the trade name Pluronics by BASF-AG, furthermore Alkane sulfonates, long-chain alcohols such as cetyl alcohol, stearyl alcohol, and their esters; ethoxylated amine derivatives, glycerol esters and half-esters, pentaerytrite and its partial esters and polyolamines.  

Also the addition of dyes, bactericides, fungicides, lubricants and Fillers are possible.

Suitable UV absorbers and light stabilizers are

• - 2- (2'-Hydroxyphenyl) benzotriazoles, such as. B. 2- (2'-Hydroxy-5-methylphenyl) benzotriazole, 2- (3 ', 5'-di-tert-butyl-2'-hydroxyphenyl) benzotriazole, 2- (5'-tert-butyl -2'-hydroxyphenyl) benzotriazole, 2- (2'-hydroxy-5'- (1,1,3,3-tetramethylbutyl) phenyl) benzotriazole, 2- (3 ', 5'-di-tert-butyl-2 '-hydroxyphenyl) -5-chlorobenzotriazole, 2- (3'-tert-butyl-2'-hydroxy-5'-methylphenyl) -5-chlorobenzotriazole, 2- (3'-sec-butyl- 5'-tert-butyl-2'-hydroxyphenyl) benzotriazole, 2- (2'-hydroxy-4'-octoxyphenyl) benzotriazole, 2- (3 ', 5'-di-tert-amyl-2'- hydroxyphenyl) benzotriazole, 2- (3 ', 5'-bis (α, α-dimethylbenzyl) -2'-hydroxyphenyl) benzotriazole, mixture of 2- (3'-tert-butyl-2'-hydroxy- 5 '- (2octyloxycarbonylethyl) phenyl) -5-chlorobenzotriazole, 2- (3'-tert-butyl-5' - [2- (2-ethylhexyloxy) carbonylethyl] -2'-hydroxyphenyl) -5-chlorine -benztriazole, 2- (3'-tert-butyl-2'-hydroxy-5 '- (2-methoxycarbonyl ethyl) phenyl-5-chlorobenzotriazole, 2- (3'-tert-butyl-2'-hydroxy- 5 '- (2-methoxycarbonylethyl) phenyl) benzotriazole, 2- (3'-tert-butyl-2'-hydroxy-5' - (2-octyloxycarbonylethyl) phenyl) benzotri azole, 2- (3'-tert-butyl-5 '- [2 - (- ethylhex yloxy) carbonylethyl] -2'-hydroxyphenyl) benzotriazole, 2- (3'-dodecyl-2'-hydroxy-5' -methylphenyl) -benztriazole and 2- (3'-tert-butyl-2'-hydroxy-5 '- (2-isooctyloxycarbonylethyl) phenyl-benzotriazole, 2,2'-methylene-bis [4- (1,1,3 , 3-tetramethylbutyl) -6-benzotriazol-2-yl-phenol]; Transesterification product of 2- [3'-tert-butyl-5 '- (2-methoxycarbonylethyl) -2'-hydroxyphenyl] -2H-benzotriazole with polyethylene glycol 300; [R-CH ₂ CH ₂ -COO (CH ₂ ) _a ] ₂ with R = 3'-tert-butyl-4'-hydroxy-5'-2H-benzotriazol-2-yl-phenyl.
• - 2-Hydroxybenzophenones, such as. B. the 4-hydroxy, 4-methoxy, 4-octoxy, 4-decyloxy, 4-dodecyloxy, 4-benzyloxy, 4,2 ', 4'-trihydroxy, 2'- Hydroxy-4,4'-dimethoxy derivative.  
• - Esters of optionally substituted benzoic acids, such as. B. 4-tert-butyl phenyl salicylate, phenyl salicylate, octylphenyl salicylate, dibenzoylresorcinol, Bis (4-tert-butylbenzoyl) resorcinol, benzoylresorcinol, 3,5-di-tert-butyl-4- 2,4-di-tert-butylphenyl hydroxybenzoate, 3,5-di-tert-butyl-4-hydro hexadecyl xybenzoate, 3,5-di-tert-butyl-4-hydroxybenzoic acid octadecyl ester, 3,5-di-tert-butyl-4-hydroxybenzoic acid-2-methyl-4,6-di tert-butylphenyl ester.
• - Acrylates such as B. α-cyan-β, β-diphenylacrylate or -iso octyl ester, α-carbomethoxy-cinnamic acid methyl ester, α-cyano-β-methyl-p- methoxy-cinnamic acid methyl ester or butyl ester, α-carbomethoxy-p- methoxy-cinnamic acid methyl ester, N- (β-carbomethoxy-β-cyanovinyl) -2- methyl indoline.
• - Nickel compounds, such as. B. Nickel complexes of 2,2'-thio-bis- [4- (1,1,3,3-tetramethylbutyl) phenol], such as the 1: 1 or 1: 2 complex, optionally with additional ligands, such as n-butylamine, triethanolamine or N-cyclohexyl-diethanolamine, nickel dibutyldithiocarbamate, nickel salts of 4-hydroxy-3,5-di-tert-butylbenzylphosphonic acid monoalkyl esters, such as methyl or ethyl esters, nickel complexes of ketoximes, as of 2-hydroxy-4-methyl-phenyl-undecylketoxim, nickel complexes of 1-phenyl-4-lauroyl-5-hydroxy-pyrazole, optionally with additional ones Ligands.
• - Sterically hindered amines, such as. B. bis- (2,2,6,6-tetramethylpiperidyl) - sebacate, bis (2,2,6,6-tetramethylpiperidyl) succinate, bis (1,2,2,5,5-penta methylpiperidyl) sebacate, n-butyl-3,5-di-tert-butyl-4-hydroxybenzyl-malone acid bis (1,2,2,6,6-pentamethylpiperidyl) ester, condensation product 1- (2-hydroxyethyl) -2,2,6,6-tetramethyl-4-hydroxypiperidine and amber acid, condensation product from N, N'-bis- (2,2,6,6-tetramethyl-4- piperidyl) hexamethylene diamine and 4-tert-octylamino-2,6-dichloro-1,3,5-s- triazine, tris (2,2,6,6-tetramethyl-4-piperidyl) nitrolotriacetate, tetrakis (2,2,6,6-tetramethyl-4-piperidyl) -1,2,3,4-butanetetraoate, 1,1 '- (1,2-ethanediyl) - bis- (3,3,5,5-tetramethylpiperazinone), 4-benzoyl-2,2,6,6-tetramethylpipe  ridine, 4-stearyloxy-2,2,6,6-tetramethylpiperidine, bis- (1,2,2,6,6- pentamethylpiperidyl) -2-n-butyl-2- (2-hydroxy-3,5-di-tert-butylbenzyl) - malonate, 3-n-octyl-7,7,9,9-tetramethyl-1,3,8-triazaspirole [4.5] decane-2,4- dione, bis (1-octyloxy-2,2,6,6-tetramethylpiperidyl) sebacate, bis (1-octyl oxy-2,2,6,6-tetramethylpiperidyl) succinate, condensation product N, N'-bis (2,2,6,6-tetramethyl-4-piperidyl) hexamethylene diamine and 4- Morpholino-2,6-dichloro-1,3,5-triazine, condensation product from 2-chloro 4,6-di- (4-n-butylamino-2,2,6,6-tetramethylpiperidyl) -1,3,5-triazine and 1,2- Bis- (3-aminopropylamino) ethane, condensation product from 2-chloro-4,6-di- (4-n-butylamino-1,2,2,6,6-pentamethylpiperidyl) -1,3,5-triazine and 1,2-bis- (3-aminopropylamino) -ethane, 8-acetyl-3-dodecyl-7,7,9,9-tetramethyl-1,3,8- triazaspiro [4.5] decane-2,4-dione, 3-dodecal-1- (2,2,6,6-tetramethyl-4-pipe ridyl) pyrrolidine-2,5-dione, 3-dodecyl-1- (1,2,2,6,6-pentamethyl-4-piperidyl) - pyrrolidine-2,5-dione.
• - Oxalic acid diamine, such as. B. 4,4'-di-octyloxy oxanilide, 2,2'-di-octyloxy 5,5'-di-tert-butyl-oxanilide, 2,2'-di-dodecyloxy-5,5'-di-tert-butyl-oxanilide, 2-ethoxy-2'-ethyloxanilide, N, N'-bis (3-dimethylaminopropyl) oxalamide, 2-ethoxy-5-tert-butyl-2'-ethyloxanilide and its mixture with 2-ethoxy 2'-ethyl-5,4'-di-tert-butyl-oxanilide, mixtures of o- and p-methoxy and of o- and p-ethoxy-di-substituted oxanilides.
• - 2- (2-hydroxyphenyl) -1,3,5-trianine such as e.g. B. 2,4,6-tris (2-hydroxy-4- octyloxyphenyl) -1,3,5-triazine, 2- (2-hydroxy-4-octyloxyphenyl) -4,6-bis- (2,4- dimethylphenyl) -1,3,5-triazine, 2- (2,4-dihydroxyphenyl) -4,6- (2,4-dimethyl phenyl) -1,3,5-triazine, 2,4-bis (2-hydroxy-4-propyloxyphenyl) -6- (2,4-di methylphenyl) -1,3,5-triazine, 2- (2-hydroxy-4-octyloxyphenyl) -4,6-bis (4- methylphenyl) -1,3,5-triazine, 2- (2-hydroxy-4-dodecyloxyphenyl) -4,6-bis- (2,4-dimethylphenyl) 1,3,5-triazine, 2- [2-hydroxy-4- (2-hydroxy-3-butyloxy propyloxy (phenyl] -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- [2-hydroxy- 3-octyloxypropyloxy) phenyl] -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine.
• - Further suitable auxiliaries and additives are metal deactivators, such as e.g. B. N, N'-diphenyloxalic acid diamide, N-salicylal-N'-salicycloylhydrazine,  N, N'-bis (salicyloyl) hydrazine, N, N'-bis (3,5-di-tert-butyl-4-hydroxyphe nylpropionyl) hydrazine, 3-salicyloylamino-1,2,4-triazole, bis (benzylidene) - oxalic acid dihydrazide, oxanilide, isophthalic acid dihydrazide, sebacic acid bis- phenylhydrazide, N ', N'-diacetyl-adipic acid dihydrazide, N, N'-bis salicyloyl-thiopropionic acid dihydrazide.
• - Basic co-stabilizers, such as. B. melamine, polyvinylpyrrolidone, Dicyandiamide, triallyl cyanurate, urea derivatives, hydrazine derivatives, Amines, polyamides, polyurethanes, alkali and alkaline earth salts higher Fatty acids, for example Ca stearate, Zn stearate, Mg behenate, Mg stearate, Na ricinoleate, K palmitate, antimony catecholate or Pewter catechinate.
• - Nucleating agents, such as. B. 4-tert-butylbenzoic acid, adipic acid, Diphenylacetic acid.
• - Fillers and reinforcing agents, such as. B. calcium carbonate, silicates, glass fibers, talc, kaolin, mica, barium sulfate, metal oxides and hydroxides, Carbon black, graphite.
• - Other additives, such as. B. plasticizers, lubricants, emulsifiers, Pigments, optical brighteners, flame retardants, antistatic agents, blowing agents.

Such auxiliaries and additives are disclosed, inter alia, in EP-A 0 669 367. The method according to the invention is particularly suitable if at least one of components C or D with a melting point of <100 ° C. become. At least one of the components C very particularly preferably has or D has a melting point of <100 ° C. and at least one of the others used components have a melting point below 100 ° C to such Components can excellently in the process according to the invention as Solid processed.

Preparation of the stabilizer dispersions

Components B, C, D and possibly others to be dosed into fleet A. Auxiliaries and / or additives can be in solid or liquid form. It can be act individual components, or mixtures of substances are used that be fed together to the dispersing device. The way as well as the The order of dosing is determined by the properties of the raw materials and the desired product characteristics.

In a preferred embodiment, only water is introduced as the liquor and the substance acting as a surfactant is a solid together with the Components C and D metered. Together can mean as a mixture of substances or separately through the same opening or different openings of the Dispersing device.

In a further preferred embodiment, a is already used as the fleet water containing surfactant, in which the components C and D and optionally further auxiliaries and / or additives together continuously be dosed and mixed intensively.

In a further preferred embodiment, one of the Components C or D mixed with a surfactant-containing liquor and in one second step (in the same apparatus or a suitable downstream one Apparatus) the second component D and / or further auxiliary and / or Additives are incorporated into the first mixture. With this variant it is also possible to use water as a liquor and the substance acting as a surfactant (Component B) to be metered together with a first component C or D. and in a second stage add the further component (s). This Variants are preferred if the first component C or D together with the compound acting as a surfactant, stabilizing for the whole system works and with a one-step addition not sufficient mixing is achieved.  

Mixing generally takes place at room temperature. However, it is also possible if it is required for the desired product properties is that the inventive method at higher or lower temperatures as room temperature. To carry out the procedure in the case of water as liquor, component A, temperatures are generally below 4 ° C up to the boiling point of the lowest-boiling ones used Component, preferably from 10 to 98 ° C, particularly preferably from 15 to 90 ° C suitable. For other components A are suitable Temperature ranges conceivable from the ranges specified for water may differ. A temperature program with different Heating and cooling phases are not in the process according to the invention required. In stabilizer dispersions, which are used in rubber dispersions Components with melting points are often used, for example used below the boiling point of the fleet. Therefore, it can make sense and be useful in the preparation of the stabilizer dispersion at temperatures above the melting point of one or more of components B to D and, if appropriate, further auxiliaries and additives E. Here one or all of the components may melt, so that this way after cooling a finely divided dispersion over a Intermediate emulsion stage is formed.

Finally, it is also conceivable to use a dispersion in which one or more components are in molten form.

The continuous process for the production of Stabilizer dispersions are suitable in comparison to the batch process of State of the art in a short time and without complex process management to provide finely divided stabilizer dispersions for direct Use in plastic dispersions are suitable.  

Devices

Suitable devices for the continuous production of Stabilizer dispersions are those that are solid and solid on the one hand Can mix liquids quickly and on the other hand also enough Apply shear energy to ensure that the liquid-solid mixture is sufficient to homogenize, including a certain amount of crushing work can be applied. Because of a possible foam formation, one should above the absolutely necessary additional air intake can be avoided. To ensure rapid mixing, solid and liquid should be used be brought into intensive contact with each other, which, for. B. by a forced delivery of the solid, for example by means of a Screw conveyor or inclined sheet conveyor within a cylinder, in the Walls in several places supply openings for the liquid phase can be achieved. The pre-mixed mixture of substances must finally go through a homogenization step.

Dispersing elements are used to homogenize the mixture of substances. The mixture is generally in a suitable mixing device premixed. However, it is also possible to mix in the dispersing element which the homogenization takes place.

Dispersing organs preferably used for this are those which are based on a flow through the rotor-stator principle. The task of mixing between Solids and liquids can be in the same device as that Homogenization happen or in separate, but one after the other switched process units. It may be sufficient that that too processing mixture for homogenization only one rotor-stator unit passes through, or if the desired product properties require it, several rotor-stator units connected in series. these can be identical or different from each other. Are the  Homogenization units different from each other, so they can in Diameter of the rotor-stator units, in the gap width, the number and shape the slots of the rotor-stator units or also in the operating parameters such as Differentiate between speed and throughput. Operation with different speeds generally require a second Drive unit for those different from the first dispersion unit Dispersing unit.

Preferred dispersing elements, which are placed on a rotor Based on the stator principle, have at least one shear element with one fixed, circular, slotted stator and one inside the stator rotating slotted rotor on a rotatably mounted drive shaft is mounted on. The dispersion is promoted so that one in the Components introduced by the rotation of the rotor in the device Radially guides the shear member from the inside out and it at or after Passes through the slots of the rotor and stator of such strong shear subjects that a finely divided dispersion is obtained.

Such dispersing devices are described, for example, in DE-A-196 54 169, wherein the use of such organs for the coagulation of graft rubber dispersions is disclosed.

To carry out the method according to the invention are also Suitable dispersing elements, with at least one shear element, which is a stator and one arranged within the stator, approximately complementary to that Has stator-formed rotor, wherein the mutually facing surfaces of the stator and the rotor are formed on and by this surface point in the direction of the respective other element, and a gap with a predetermined between the stator and the rotor Gap width is formed.  

In a preferred embodiment of such a dispersing device Stator formed with a structure in the form of a ring gear, the Rows of teeth are arranged radially circularly around the rotor, and the rotor points one or more rows of teeth which are approximately complementary to each other.

The gap width can vary within a wide range, depending on of the dispersion to be produced and the desired product quality. Gap widths of about 0.1 to 10 mm, preferably from 0.2 to 5 mm, particularly preferably from 0.2 to 2 mm give good results.

In a particularly preferred embodiment of the dispersing device, the Homogenization brought about by strong shear of the dispersion in which the mixture of substances to be homogenized by running at high speed single-stage or multi-stage dispersing device is continuously promoted, each stage consisting of a circular slotted stator and one on top of it coordinated, slotted rotor rotating within the stator circuit and the promotion of the medium to be homogenized in everyone from central flowed rotor and stator existing process part radially from the inside to done outside. Circumferential speeds are generally 1 up to 50 m / s, preferably from 3 to 30 m / s, particularly preferably from 5 to 25 m / s, and the average residence times in the shear organ are generally less than 12 Seconds, preferably less than 10 seconds and particularly preferably less than 8 seconds.

Such dispersing devices are constructed from a housing in which on a by a motor driven shaft or rotors in the associated stators rotate at high speed. The suction of the medium to be dispersed takes place axially and the conveyance follows Pass the rotor-stator units radially. Suitable rotor stator Combinations have one or, depending on the equipment and application several rows of teeth (each on rotor and stator) with different  Tooth spacing and corresponding tooth gaps. Examples of such Particularly suitable dispersing devices are mixers of the type MHD-2000 and Dispax® from IKA® mechanical engineering.

The process according to the invention is particularly preferably carried out in such a way that components B to E individually, as a mixture or separately from one another a suitable mixing element are mixed intensively with the liquor A, where the components B to E as a solid by means of a screw conveyor or as Liquid by means of a pump in a cylindrical, radial with holes provided mixing chamber through which the fleet A flows, entered and through rotating mixing elements is mixed intensively.

Another object of the present invention is the use of mentioned dispersing devices for the continuous production of stabilizer dispersions.

Due to the high power densities in the turbulent shear flows are concentrated between the rotor-stator columns, very strong arise Shear gradient between the rotor and stator elements, so that the dispersion particles meet at high speed and further dispersed.

Rotors with additional knives in the axial and / or radial direction are also applicable.

In a preferred embodiment, rotors are used that in addition to the shear elements, turbine blade-like displacement strips included and thus lead to a better product promotion / suction effect.

The following examples further illustrate the invention.  

Examples Feedstocks Component A

A liquor: fully demineralized (VE) water

Component B

B Compound suitable as a surfactant:
B1 potassium stearate
B2 secondary Na alkyl sulfonate
B3 Na alkylarylsulfonate

Component C

C first stabilizer component
C1 octadecyl-3- (3,5-bis (1,1-dimethylethyl) -4-hydroxyphenyl) propionate (= Irganox 1076)
C2 butylated reaction product of p-cresol and dicyclopentadiene (Ralox LC, Wingstay L)
C3 1,1,3, -Tris- (2'-methyl-4'-hydroxy-5'-tert-butylphenyl) butane (Topanol CA)
C4 4,4'-thiobis (3-methyl-6-tert-butylphenol)

Component D

D second stabilizer component
D1 3,3'-thiodipropionic acid dilauryl ester (Irganox PS 800)
D2 3,3'-thiodipropionic acid distearyl ester (Irganox PS 802)
D3 TNPP (triphenyl phosphite)

Component E

E1 ethylene oxide-propylene oxide block copolymer, for example a commercial product from the Pluronics series from BASF AG)
E2 silicone oil

Dispersing device

A MHD-2000 mixer from IKA ®-Maschinenbau is used with solid dosing and a single-stage rotor-stator dispersing device with narrow slits (size 4)

example 1 Preparation of a surfactant solution

Throughput: 600 kg / h
Component A: 570 kg / h, 25 ° C
Component B1: 30 kg / h

A homogeneous surfactant solution is obtained.

Example 2 Preparation of a costabilizer emulsion

Throughput: 700 kg / h
Component A: 500 kg / h, 25 ° C
Component B1: 70 kg / h
Component D1: 130 kg / h

Components B and D are dosed together as a solid mixture.

A dispersion is obtained which still contains solid particles of component D1 contains. After pumping around in a circle twice, the dispersion is homogeneous.

Example 3 Preparation of a costabilizer emulsion

Throughput: 700 kg / h
Component A: 500 kg / h, 60 ° C
Component B1: 70 kg / h
Component D1: 130 kg / h

A homogeneous emulsion is obtained.

Example 4 Preparation of a stabilizer dispersion

Throughput: 1000 kg / h
Component A: 650 kg / h, 86 ° C
Component B1: 50 kg / h
Component C1: 100 kg / h
Component D1: 200 kg / h

Component A is pumped on the liquid side. Components B and C are called Mixture is dosed, and component D is in the same opening, however dosed gravimetrically regardless of the other components.

Example 5 Preparation of a stabilizer dispersion

Throughput: 1000 kg / h
Component A: 650 kg / h, 60 ° C
Component B1: 50 kg / h
Component C2: 100 kg / h
Component D1: 200 kg / h

Component A is pumped on the liquid side. Components B and D are called Mixture metered, and component C is in the same opening though dosed gravimetrically regardless of the other components. You get one Mixture, wherein component C has not yet been mixed in sufficiently. At the Allowing to stand is phase separated.

Two MHD-2000 mixers are arranged one behind the other, both equipped with a two-stage dispersing part.

Example 6

Total throughput: 1000 kg / h
Step 1:
Component A: 50 ° C, 550 l / h
Component B1: 50 kg / h
Component D1: 200 kg / h
2nd step:
Liquid side: Product from step 1.
Solid side: component C2, 200 kg / h

A homogeneous dispersion is obtained.

Dispersing device 3

MHD-2000 mixer with two-stage dispersion stage, connected behind three-stage Dispax®

Example 7

Throughput: 1600 kg / h
Component A 50 ° C, 1100 l / h
Component B2: 50 kg / h
Component D1: 300 kg / h
Component C3: 150 kg / h
Liquid side: component A + B
Solid side: component C + D independently in the same opening

A homogeneous dispersion is obtained.

Example 8

Throughput: 1000 kg / h
Component A: 25 ° C, 800 l / h
Component B2: 50 kg / h
Component C4: 150 kg / h
Liquid side: component A + B
Solid side: component C

A homogeneous dispersion is obtained.

Claims (12)

1. A process for the preparation of stabilizer dispersions for stabilizing plastic dispersions containing

• a) a dispersant, the liquor A,
• b) at least one compound B effective as a surfactant,
• c) optionally at least one phenolic antioxidant C, and
• d) optionally at least one sulfur- or phosphorus-containing costabilizer D,
• e) optionally further auxiliaries and / or additives

wherein at least one of components C or D is present in the stabilizer dispersion and components B, C and D can be in powder or liquid form, characterized in that components A to D are continuously mixed by means of a mixer and homogenized in a dispersing element and the ready-to-use stabilizer dispersion is continuously removed from the dispersing element. 2. The method according to claim 1, characterized in that the stabilizer dispersion

• 0.1 to 20% by weight, based on the total mass of the stabilizer dispersion, of a compound B which is active as a surfactant,
• - 0 to 65 wt .-%, based on the total mass of the stabilizer dispersion, of at least one phenolic antioxidant C, and
• 0 to 65% by weight, based on the total mass of the stabilizer dispersion, of at least one costabilizer D containing sulfur or phosphorus,
• 0 to 40% by weight, based on the total mass of the stabilizer dispersion, of further auxiliaries and additives,
• and such an amount of the dispersant, the liquor A, that the total mass of the stabilizer dispersion is 100% by weight,

contains. 3. The method according to claim 1 or 2, characterized in that the fleet A Is water. 4. The method according to any one of claims 1 to 3, characterized in that as Component B is a compound active as a surfactant selected from Sodium and potassium salts of arylalkyl, alkyl sulfonates or fatty acids is used with 10 to 18 carbon atoms. 5. The method according to any one of claims 1 to 4, characterized in that as component C a phenolic antioxidant selected from octadecyl-3- (3,5-bis (1,1-dimethylethyl) -4-hydroxyphenyl) propionate, a butylated Reaction product of p-cresol and dicyclopentadiene, 1,1,3-tris (2'-methyl-4'-hydroxy-5'-tert-butylphenyl) butane, 2,2'-methylenebis- (6- (1.1 -dimethyl ethyl) 4-methylphenol and 4,4'-thio-bis (3-methyl-6-tert-butylphenol) and compounds are compounds of the formula (II)
wherein R _{1 is} methyl or ethyl, R _{2 is} C ₂ -C ₂₀ alkyl and R _{3 is} C ₁ -C ₄ alkyl. 6. The method according to any one of claims 1 to 5, characterized in that as Component D is a sulfur and / or phosphorus containing costabilizer selected from 3,3'-thiodipropionic acid dilauryl ester, 3,3'- Distearyl thiodipropionate, and tris (2,4-bis (1,1-dimethyl ethyl) phenyl) phosphite, tisnonylphenyl phosphite tertrakis (2,4-bis-1,1-di methylethyl) phenyl-4,4'-diphenylene diphosphite, bis (2,4-di-tert-butyl phenyl) pentaerythritol diphosphite and triphenyl phosphite is used. 7. The method according to any one of claims 1 to 6, characterized in that at least one of components C or D has a melting point of <100 ° C. exhibit. 8. The method according to claim 7, characterized in that at least one of the remaining components have a melting point of <100 ° C. 9. The method according to any one of claims 1 to 8, characterized in that a Dispersing device is used that on a flow-through rotor-stator Principle is based. 10. The method according to claim 9, characterized in that the dispersing element is built up from a housing in which one by a motor driven shaft with one or more rotors in associated stators rotate at high speed, with the suction of the components axially takes place and the conveyance radially after passing through the rotor-stator unit he follows. 11. The method according to any one of claims 1 to 10, characterized in that components B to E individually, as a mixture or separately mixed intensively with the liquor A by means of a suitable mixing organ are, the components B to E as a solid by means of a Screw conveyor or as a liquid in a pump  cylindrical mixing chamber with radial holes through which the Component A flows, enters and through rotating mixing elements is mixed intensively. 12. Use of a device constructed from a housing in which a shaft driven by a motor one or more rotors in associated stators rotate at high speed, with the The components are drawn in axially and conveyed after passing the rotor-stator unit takes place radially, for the continuous production of Stabilizer dispersions.