UNIVERSAL GLIDE AND FLOW ADDITIVES WITH PAINTABLE PROPERTIES

Description

[0001] The present invention relates to universal slip and leveling additives based on polyoxyalkylene-polysiloxane copolymers.

[0002] The requirements for varnishes and paints are diverse. Basically, varnishes and paint coatings have two tasks or functions: protective and decorative. If only the term "varnish coating" is used below, both types of coating are meant. They enhance, protect, and preserve materials such as wood, metal, or plastic. Accordingly, on the one hand, brilliant and smooth varnish coatings are required; on the other, a closed varnish layer is required to ensure chemical and mechanical resistance, a certain degree of lubricity of the varnish, or a special feel.

[0003] Painted products, such as furniture, a refrigerator, or a car, sell much better with good flow. For this reason, slip and leveling additives are developed to optimize the flow behavior of a paint coating and are used in paint and coating formulations.

[0004] Commercially available slip and flow additives are based on polyacrylates, cellulose acetobutyrates, fluorosurfactants or silicones.

[0005] Silicones have been used in the coatings industry since the early 1950s. Chemical modification of the dimethylpolysiloxane chain has made it possible to control key silicone properties, such as compatibility, slip resistance, and scratch resistance.

[0006] Well-known modified dimethylpolysiloxane chains are polyoxyalkylene-polysiloxane block copolymers, where the balanced ratio of the polyoxyalkylene blocks and the polysiloxane blocks in the block copolymers, as well as the structure of the two blocks, are of great importance. To create the most effective slip and flow-control additive for use in wood, plastic, industrial, and automotive coatings, or printing inks, there are numerous variables for both the polyoxyalkylene block and the polysiloxane block: The polyoxyalkylene block can be composed of various oxyalkylene units, primarily oxyethylene, oxypropylene, and oxybutylene units. The weight ratio of these units to one another, their sequence, and the molecular weight of the polyoxyalkylene block can be varied. Also important is the end group of the polyoxyalkylene block, which can be reactive (e.g., OH group) or inert (e.g., alkoxy group).The polyoxyalkylene block can be linked to the polysiloxane block by a hydrolytically stable C-Si bond or the hydrolytically less stable CO-Si bond. Different polyoxyalkylene blocks can also be bonded to the polysiloxane block. The polysiloxane block can be varied in terms of the type and proportion of Si units. The siloxane block can be linear or branched and have different molecular weights. The polyoxyalkylene blocks can be bonded to the polysiloxane block terminally and / or laterally. Predictions regarding the effectiveness of a polysiloxane-polyoxyalkylene block copolymer as a slip and leveling additive can only be made to a limited extent. The skilled person is therefore compelled to test the possible variations largely empirically.In view of the large, almost incalculable number of possible variations, the discovery of particularly effective special structural parameters and corresponding block copolymers for the production of slip and leveling additives represents a progress-accelerating and thus inventive achievement.

[0007] Polysiloxane-polyoxyalkylene block copolymers used in coating technology have been described repeatedly. Among the large number of relevant publications, the following are representative.

[0008] Thus, EP 0 265 807 A2 describes the use of polyoxyalkylene-polysiloxane block copolymers as agents for improving the scratch resistance and increasing the lubricity of paint surfaces, wherein the chain length of the block copolymers is 40 to 60 and the average molecular weight of the polyoxyalkylene blocks is between 1400 and 3000 g / mol.

[0009] EP 0 785 240 B1 also discloses aqueous and radiation-curing printing varnishes and printing inks containing special polyoxyalkylene-polysiloxane copolymers that exhibit improved scratch resistance, increased lubricity, and extremely low foaming tendency, thus facilitating smoother ink production while simultaneously achieving a visually appealing print image. Here, the chain length of the copolymers is also between 40 and 60, with the average molecular weight of the polyoxyalkylene blocks being between 300 and 800 g / mol.

[0010] However, both polyoxyalkylene-polysiloxane copolymers mentioned in the prior art have the disadvantage that they cannot be painted or printed over in varnishes and paints or have poor values.

[0011] The ability of paints and paints to be overcoated or overprinted is particularly important when touching up and repairing painted and painted surfaces. Surface damage to paint on objects is a common occurrence, and repairing these damaged areas always presents a challenge. Overprinting on various printed products, such as foils and paper, also poses a significant challenge. In this case, the overcoatable layer should form a single unit with the newly applied layer and not separate from each other.

[0012] It is therefore an object of the invention to provide slip and leveling additives which have improved scratch resistance, increased slip properties analogous to those of the prior art, but are universally applicable and at the same time have overcoatability or overprintability without impairing the optical paint image / color image due to wetting defects or the like.

[0013] In addition, a conscious, targeted limitation of the described range can lead to application-optimized products that have not previously been found in the abundance of known ranges.

[0014] To solve the problem, universal slip and flow additives with overpaintable or overprintable properties containing polyoxyalkylene-polysiloxane copolymers of the general formula (I) R 1< = identical and / or different alkyl radicals having 1 to 8 C atoms, preferably having 1 - 4 C atoms, particularly preferably having 1 or 2 C atoms, R = R 1< and / or -C p H 2p O[(C 2 H 4 O) x (C 3 H 6 O) y ]R 2< , where p = 2, 3 or 4, with the proviso that at least one R = -C p H 2p O[(C 2 H 4 O) x (C 3 H 6 O) y ]-, R 2< = alkyl radical having 1 to 3 C atoms, n ≥ 45, preferably n ≥ 50, particularly preferably n > 60, m = 1 to 5, where x and y are chosen so that the average molecular weight of the polyoxyalkylene block - [(C 2 H 4 O) x (C 3 H 6 O) y ]- > 3,000 g / mol and the molecular weight ratio x to y is < 0.8, preferably < 0.75.

[0015] Preferably with the proviso that n is not greater than 500, preferably not greater than 300 and particularly preferably not greater than 200.

[0016] Preferably with the proviso that the average molecular weight of the polyoxyalkylene block - [(C 2 H 4 O) x (C 3 H 6 O) y ] - is less than 10,000 g / mol, preferably less than 8,000 g / mol and particularly preferably less than 5,000 g / mol.

[0017] Preferably with the proviso that the molecular weight ratio x to y is not less than 0.05, preferably not less than 0.1 and particularly preferably not less than 0.2.

[0018] It is obvious to the skilled person that the resulting copolymers are in the form of a mixture whose distribution is essentially determined by statistical laws. The values ​​for x, y, p, and n, m therefore correspond to mean values.

[0019] The numerical values ​​of the indices n and m are of key importance for the properties of the polyoxyalkylene-polysiloxane copolymers. n indicates the number of methylalkylsiloxy units and determines the chain length of the copolymers. In the polyoxyalkylene-polysiloxane copolymers to be used according to the invention, n has a numerical value of n ≥ 45, preferably n ≥ 50, particularly preferably n > 60. Preferably, with the proviso that n is not greater than 500, preferably not greater than 300, and particularly preferably not greater than 200. It is known to those skilled in the art that the compounds are present in the form of a mixture with a distribution governed essentially by statistical laws. The value of n therefore represents the mean of the number of methylalkylsiloxy units.

[0020] The polysiloxanes used according to the invention are generally prepared by a platinum-catalyzed addition reaction of a siloxane containing a silane hydrogen atom with a linear polyoxyalkylene oxide polyether, the linear chain of which is blocked at one end with an alkyleneoxy group (such as allyloxy or vinyloxy) and at another end, for example, with an alkoxy, aralkyloxy or acyloxy group, as per the following equation: XSiH + H 2 C=CHCH 2 OR 3< → XSiCH 2 CH 2 CH 2 OR 3<

[0021] The polysiloxanes according to the invention are generally known. Further preparation processes are disclosed in EP 0 785 240 B1.

[0022] According to the invention, the polyoxyalkylene blocks consist of oxyethylene and oxypropylene units, preferably starting from ethylene oxides and propylene oxides, with the average molecular weight of the polyoxyalkylene blocks being >3,000 g / mol. The molecular weight ratio of the oxyethylene to the oxypropylene units, expressed by the ratio x:y, is <0.8, preferably <0.75.

[0023] Surprisingly, it has now been found that (i) polysiloxanes with a chain length of n ≥ 45, preferably n ≥ 50, particularly preferably n > 60, (ii) specifically selected molecular weight average of the polyoxyalkylene block [(C 2 H 4 O) x (C 3 H 6 O) y ] > 3,000 g / mol, (iii) specifically selected molecular weight ratio of oxyethylene to oxypropylene units x to y < 0.8, preferably < 0.75 and (iv) with the use of so-called end-capped polyalkylene oxide polyethers are capable of producing slip and leveling additives with the excellent typical properties of slip and scratch resistance and are also paintable.

[0024] The boundary condition formulated in (iv) does not exclude production-related residual amounts of uncapped polyethers (ie R 2< is hydrogen), which in certain cases may be present in end-capped polyethers in a proportion of up to 10%.

[0025] The slip and flow additives of the invention fulfill more than two important application properties. They improve flow and slip, while simultaneously enabling the coatings or inks to be overcoated or overprinted.

[0026] The polyoxyalkylene-polysiloxane copolymers in the slip and leveling additives according to the invention preferably have the radical R 2< = methyl radicals.

[0027] The polyoxyalkylene-polysiloxane copolymers according to the invention particularly preferably have exclusively pendant modifications with R =-C p H 2p O[(C 2 H 4 O) x (C 3 H 6 O) y ]R 2< , where p = 2, 3 or 4.

[0028] The inventive side-modified polyoxyalkylene-polysiloxane copolymers preferably have α- and ω-terminal modification of alkyl radicals.

[0029] A further aspect of the invention is the use of the slip and leveling additives in coating compositions, wherein the coating compositions are solvent-based, solvent-free or water-based paints or printing inks.

[0030] Preferably, the use of polyoxyalkylene-polysiloxane copolymers can be used in amounts of 0.001 to 5.0 wt.%, preferably 0.01 - 3.0 wt.%, based on the coating compositions.

[0031] Another object of the invention is the use of polyoxyalkylene-polysiloxane copolymers of the general formula (I) R 1< = identical and / or different alkyl radicals having 1 to 8 C atoms, preferably having 1 - 4 C atoms, particularly preferably having 1 or 2 C atoms, R = R 1< and / or -C p H 2p O[(C 2 H 4 O) x (C 3 H 6 O) y ]R 2< , where p = 2, 3 or 4, with the proviso that at least one R = -C p H 2p O [(C 2 H 4 O) x (C 3 H 6 O) y ]-, R 2< = alkyl radical having 1 to 3 C atoms, n ≥ 45, preferably n ≥ 50, particularly preferably n > 60, m = 1 to 5, where x and y are chosen so that the molecular weight of the polyoxyalkylene block -[(C 2 H 4 O) x (C 3 H 6 O) y ]-> 3,000 g / mol and the molecular weight ratio x to y is < 0.8, preferably < 0.75, as universal slip and leveling additives with overcoatable and overprintable properties.

[0032] The use of polyoxyalkylene-polysiloxane copolymers of the general formula (I) is preferred, preferably with the proviso that n is not greater than 500, particularly preferably not greater than 300 and particularly very preferably not greater than 200.

[0033] Preference is given to the use of polyoxyalkylene-polysiloxane copolymers of the general formula (I), preferably with the proviso that the average molecular weight of the polyoxyalkylene block -[(C 2 H 4 O) x (C 3 H 6 O) y ]- is less than 10,000 g / mol, preferably less than 8,000 g / mol and particularly preferably less than 5,000 g / mol.

[0034] The use of polyoxyalkylene-polysiloxane copolymers of the general formula (I) is preferred, preferably with the proviso that the molecular weight ratio x to y is not less than 0.05, preferably not less than 0.1 and particularly preferably not less than 0.2.

[0035] With regard to the specific selection conditions of the polyoxyalkylene-polysiloxane copolymers, reference is made to the above-mentioned explanation.

[0036] The polyoxyalkylene-polysiloxane copolymers according to the invention with exclusively pendant modifications with R =-C p H 2p O[(C 2 H 4 O) x (C 3 H 6 O) y ]R 2< , where p = 2, 3 or 4, are preferably used.

[0037] Particular preference is given to using the inventive side-modified polyoxyalkylene-polysiloxane copolymers with α- and ω-terminal modifications of alkyl radicals.

[0038] Preferably, the polyoxyalkylene-polysiloxane copolymers are used to produce coating compositions.

[0039] Preferably, 0.001 to 5.0 wt.%, preferably 0.01 - 3.0 wt.% of polyoxyalkylene-polysiloxane copolymers are used, based on the coating composition.

[0040] The following examples are provided solely to illustrate this invention to those skilled in the art and do not constitute any limitation of the claimed subject matter or the claimed process. Measurement methods:

[0041] To determine parameters or measured values, the methods described below are preferably used. In particular, these methods were used in the examples of this patent. Sliding resistance value G (cN)

[0042] A proven method for measuring lubricity is frictional force. This method is performed using an Instron Bluehill device.

[0043] Fig. 1 shows a schematic representation of the test method.

[0044] A 500 g weight with a defined felt pad is pulled evenly across the paint surface by a traction machine. The force required is measured with an electronic force transducer. The test is performed at a constant speed of 12 mm / sec, allowing for reproducible measurements with high accuracy. The lower the sliding resistance value G (cN), the higher the sliding ability of the coating surface. Scratch resistance

[0045] Scratch resistance is the mechanical resistance of a coating surface to visible damage caused by a moving, hard object in contact with the surface. The object used here is a fingernail. The top of the fingernail is scratched across the coating surface five times at a 45° angle and with appropriate pressure, with the scratch direction away from the tester. To assess the scratch values, the standard sample and the test samples are examined by the same tester. A visual assessment of the damage to the coating surface is then performed. The standard sample is examined and compared with the test sample.

[0046] The assessment is based on the following scale: 0 = corresponds to the standard sample (without additive) - = worse than standard sample + = better than standard sample application

[0047] The respective coating compositions are applied to wood panels using a 120µm box-type doctor blade. The coated wood panels are dried for 2 hours at room temperature (RT), 2 hours at 40°C, and then for a further 24 hours at RT. A second coat is then applied to the dried first coat from the previous day, as described above. The twice-coated wood panels are dried for 2 hours at room temperature, 2 hours at 40°C, and then for a further 7 days at RT (applied wood panel).

[0048] Adhesion is assessed by cross-cutting / tape tearing. A good adhesion value is GT = 0. A poor value is GT = 5. Overpaintable

[0049] Overcoatability is determined by the adhesion values ​​using a cross-cut test according to DIN EN ISO 2409. This test determines the adhesion of two coatings applied to one another. Haptics or touch

[0050] Haptics is the subjective perception of a coating's surface texture. This involves rubbing the coated wood panels evenly with the fingertips. Because this is a subjective test, the same person always performs the test and compares the results. A standard sample is used for direct comparison.

[0051] The assessment is based on a 3-level scale: 0 = corresponds to the standard sample (without additive) - = worse than standard sample + = better than standard sample Examples of implementation: 1. Slip and leveling additives based on polyoxyalkylene-polysiloxane copolymers

[0052] Table 1 shows inventive examples 1 - 3 and comparative examples (VG) 4 - 12.

[0053] As comparative examples VG 4 - 6, the block copolymers were prepared according to EP 0 265 807 A2 and EP 0 785 240 B1 and VG 9 - 11 according to CN 108047452 and used for the application testing.

[0054] Furthermore, commercially available flow control additives VG 7 (Tego® Glide 410, Evonik) and VG 8 (Borchi® Gol OL 17, Borchers) were used as further comparative examples for the application testing. According to the product data sheet, these contain polyether-modified polysiloxanes. Preparation of the inventive slip and leveling additives 1 - 3

[0055] The siloxanes and polyethers are placed in a flask equipped with a stirrer, thermometer, gas inlet, and reflux condenser (see Table 1). Nitrogen is passed through the apparatus, and the flask contents are heated to 80 to 100°C while stirring. At this temperature, a platinum catalyst (approx. 2 to 4 ppm Pt) is added to the mixture. An exothermic reaction begins. Depending on the reactants, temperature increases of 10 to 30°C occur. The mixtures are allowed to react, achieving SiH conversions of ≥ 97% (determined via hydrogen cleavable in alkaline medium with n-butanol). During the reaction, the initially cloudy flask contents become clear. Reaction times are typically 1 to 8 hours.

[0056] The polyethers are preferably used in excess (30 to 60%). The reaction described above can also be carried out with the addition of solvents, which is particularly advantageous when higher-viscosity products are formed. Solvents that can be distilled off after the reaction (e.g., toluene, xylene) or those that can remain in the final product after the reaction (e.g., dipropylene glycol, di- and tripropylene glycol monobutyl ether, propylene glycol monophenyl ether, double-bond-free polyethers) can be used. Table 1: Slip and leveling additives Slip and leveling additive reference Modification position of -C p H 2p O[C 2 H 4 O) x (C 3 H 6 O) y ]R 2< R R 1< R 2< p n m x / y Molecular weight of polyoxyalkylene block Look 1 according to the invention lateral -C p H 2p O[(C 2 H 4 O) x (C 3 HeO) y ]R 2< , CH 3 CH3 CH3 3 72 3,9 0,73 >3000 clear 2 according to the invention terminal -C p H 2p O[(C 2 H 4 O) x (C 3 HeO) y ]R 2< , CH 3 CH3 CH3 3 47 2 0,73 >3000 clear 3 according to the invention lateral and terminal -C p H 2p O[(C 2 H 4 O) x (C 3 H 6 O) y ]R 2< CH3 CH3 3 58 1 0,73 >3000 clear VG4 EP 0 265 807 A2 not according to the invention lateral and terminal -C p H 2p O[(C 2 H 4 O) x (C 3 H 6 O) y ]R 2< CH3 H 3 60 0,3 1,35 1400 - 3000 clear VG5 EP 0 785 240 B1 not according to the invention terminal -C p H 2p O[(C 2 H 4 O) x (C 3 H 6 O) y ]R 2< , CH 3 CH3 CH3 3 48 1 2,85 <800 clear VG6 EP 0 785 240 B1 not according to the invention terminal -C p H 2p O[(C 2 H 4 O) x (C 3 H 6 O) y ]R 2< , CH 3 CH3 CH3 3 39 1 2,85 <800 clear VG7 Tego ®< Glide 410 not according to the invention - - - - - - - - clear VG8 Borchi ®< Gol OL 17 not according to the invention - - - - - - - - clear VG9 CN 108047452 not according to the invention lateral -C p H 2p O[(C 2 H 4 O) x (C 3 H 6 O) y ]R 2< , CH 3 CH3 CH3 3 72 3,9 2,03 3300 cloudy, brownish VG 10 CN 108047452 not according to the invention lateral -C p H 2p O[(C 2 H 4 O) x (C 3 H 6 O) y ]R 2< , CH 3 CH3 CH3 3 98 1 1,56 1100 cloudy, grey-brown, dark sediment VG 11 CN 108047452 not according to the invention lateral -C p H 2p O[(C 2 H 4 O) x (C 3 H 6 O) y ]R 2< , CH 3 CH3 CH3 3 98 1 0,67 600 cloudy, greyish, dark sediment 2. Application-related review 2.1 Solvent-based wood varnish 1

[0057] First, a base paint without hardener is prepared according to Table 2. The components are mixed using a Dispermat for 10 minutes at 1000 rpm.

[0058] For the application testing, 50 g of base paint are mixed with 0.35 g of an additive according to Table 1 and homogenized using Dispermat for 1 minute at 500 rpm (additive-containing base paint).

[0059] 2.9 g of hardener are weighed into 25 g of the additive-containing base lacquer and homogenized again using a Dispermat for 1 minute at 500 rpm. The resulting wood lacquer 1 is applied to a wooden panel, which is used for application testing. Table 2: Solvent-based wood varnish Recipe 1 - Base paint Sample weight (g) Polyester polyol (75%) 1)< 65,5 xylene 21,8 Methoxypropyl acetate 12,7 100,0 Hardener Aliphatic isocyanate (75%) 2)< 11,5 1)< Commercially available under the name Setal ®< D RD 181 X, Allnex 2)< Commercially available under the name Desmodur ®< 75 N MPA / X, Covestro Table 3: Results for solvent-based wood varnish 1 Solvent-based wood varnish 1 (LH) Slip and leveling additives Overpaintable Sliding resistance values ​​[cN] Haptics / Touch Scratch resistance Standard sample (without additive) 0 GT0 336 0 0 LH11 1 GT1 65 + 0 LH12 2 GT1 60 + 0 LH13 3 GT1 62 + 0 LH VG 14 VG4 GT5 46 + 0 LH VG 15 VG5 GT5 167 0 0 LH VG 16 VG6 GT5 183 0 0 LH VG 17 Tego ®< Glide 410 GT5 43 + 0 LH VG 18 Borchi ®< Gol OL 17 GT1 66 0 0 LH VG 19 VG9 GT5 66 + 0 LH VG 110 VG 10 GT5 61 - 0 LH VG 111 VG 11 GT5 49 + 0

[0060] Table 3 shows that the slip and leveling additives according to the invention exhibit comparable good to better slip and scratch resistance in this coating system. Furthermore, it was found that the coatings containing these additives exhibit overcoatability and good haptics. The commercial additive from Borchers also possesses overcoatability, but lacks good haptics / touch. 2.2 Solvent-based wood varnish 2

[0061] First, a base paint without hardener is prepared according to Table 4. The components are mixed using a Dispermat for 10 minutes at 1000 rpm.

[0062] For the application testing, 50 g of base paint are mixed with 0.35 g of an additive according to Table 1 and homogenized using Dispermat for 1 minute at 500 rpm (additive-containing base paint).

[0063] 13.1 g of hardener are weighed into 25 g of the additive-containing base lacquer and homogenized again using a Dispermat for 1 minute at 500 rpm. The resulting wood lacquer 2 is applied to a wooden panel, which is used for application testing. Table 4: Solvent-based wood varnish Recipe 2 - Base paint Sample weight (g) Polyester polyol (75%) 3)< 71,5 Methoxypropyl acetate 5,3 Butyl acetate 17,9 Ethyl acetate 5,3 100 Hardener Aromatic isocyanate (51%) 4)< 51,4 Aromatic isocyanate (75%) 5)< 34,2 Butyl acetate 14,4 100 3)< Commercially available under the name Desmophen ®< 1300 BA , Covestro 4)< Commercially available under the name Desmodur ®< IL 1351, Covestro 5)< Commercially available under the name Desmodur ®< L 75, Covestro Table 5: Results for solvent-based wood varnish 2 Solvent-based wood varnish 2 (LH) Slip and leveling additives Overpaintable Sliding resistance values ​​[cN] Haptics / Touch Scratch resistance Standard sample (without additive) 0 GT0 182 0 0 LH21 1 GT0 47 + + LH22 2 GT0 46 + + LH23 3 GT0 50 + + LH VG 24 VG4 GT5 48 + + LH VG 25 VG5 GT5 119 0 - LH VG 26 VG6 GT5 124 0 - LH VG 27 Tego ®< Glide 410 GT5 45 + + LH VG 28 Borchi ®< Gol OL 17 GT5 48 + + LH VG 29 VG9 GT3 61 + + LH VG 210 VG 10 GT5 43 + - LH VG 211 VG 11 GT5 58 + +

[0064] Table 5 shows that the inventive slip and leveling additives also exhibit excellent overcoatability in this wood coating system. They also improve slip, scratch resistance, and haptics / touch. All comparative examples exhibit no overcoatability.

Claims

1. Universal slip and levelling additives having recoatable or reprintable property, comprising polyoxyalkylene-polysiloxane copolymers of general formula (I) R1 = identical and / or different alkyl radicals having 1 to 8 carbon atoms, preferably having 1 - 4 carbon atoms, particularly preferably having 1 or 2 carbon atoms, R = R1 and / or -CpH2pO[(C2H4O)x(C3H6O)y]R2, where p = 2, 3 or 4, with the proviso that at least one R =-CpH2pO[(C2H4O)x(C3H6O)y]-, R2 = alkyl radical having 1 to 3 carbon atoms, n ≥ 45, preferably n ≥ 50, particularly preferably n > 60, m = 1 to 5, wherein x and y are selected such that the average molecular weight of the polyoxyalkylene block - [C2H4O)x(C3H6O)y]- is > 3000 g / mol and the molar weight ratio of x to y is < 0.8, preferably < 0.75.

2. Slip and levelling additives according to Claim 1, characterized in that the radical R2 is methyl radicals.

3. Use of the slip and levelling additives according to Claim 1 or 2 in coating compositions, wherein the coating compositions are solvent-containing, solvent-free or water-based coating, or printing ink.

4. Use according to Claim 3, characterized in that the polyoxyalkylene-polysiloxane copolymers are used in amounts from 0.001 to 5.0% by weight, preferably 0.01 - 3.0% by weight, based on the composition.

5. Use of polyoxyalkylene-polysiloxane copolymers of general formula (I) R1 = identical and / or different alkyl radicals having 1 to 8 carbon atoms, preferably having 1 - 4 carbon atoms, particularly preferably having 1 or 2 carbon atoms, R = R1 and / or -CpH2pO[(C2H4O)x(C3H6O)y]R2, where p = 2, 3 or 4, with the proviso that at least one R = - CpH2pO[(C2H4O)x(C3H6O)y]-, R2 = alkyl radical having 1 to 3 carbon atoms, n ≥ 45, preferably n ≥ 50, particularly preferably n > 60, m = 1 to 5, wherein x and y are selected such that the molecular weight of the polyoxyalkylene block -[C2H4O)x(C3H6O)y]- is > 3000 g / mol and the molar weight ratio of x to y is < 0.8, preferably < 0.75, as universal slip and levelling additives having recoatable or reprintable property.

6. Use of the polyoxyalkylene-polysiloxane copolymers according to Claim 5 for producing coating compositions.

7. Use according to Claim 5 or 6, characterized in that the polyoxyalkylene-polysiloxane copolymers are used in amounts from 0.001 to 5.0% by weight, preferably 0.01 - 3.0% by weight, based on the coating composition.