WO2010003611A1 - Polyhydroxyfunktionelle polysiloxane zur erhöhung der oberflächenenergie von thermoplasten, verfahren zu ihrer herstellung und ihre verwendung - Google Patents
Polyhydroxyfunktionelle polysiloxane zur erhöhung der oberflächenenergie von thermoplasten, verfahren zu ihrer herstellung und ihre verwendung Download PDFInfo
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- WO2010003611A1 WO2010003611A1 PCT/EP2009/004867 EP2009004867W WO2010003611A1 WO 2010003611 A1 WO2010003611 A1 WO 2010003611A1 EP 2009004867 W EP2009004867 W EP 2009004867W WO 2010003611 A1 WO2010003611 A1 WO 2010003611A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/38—Polysiloxanes modified by chemical after-treatment
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
- C08G77/46—Block-or graft-polymers containing polysiloxane sequences containing polyether sequences
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/10—Block- or graft-copolymers containing polysiloxane sequences
- C08L83/12—Block- or graft-copolymers containing polysiloxane sequences containing polyether sequences
Definitions
- the present invention relates to the use of polyhydroxy-functional polysiloxanes which can be prepared by the addition of polyhydroxy-functional allyl polyethers to alkylhydrogen siloxanes, as additives for increasing the surface energy and for improving the printability of thermoplastics and polymeric molding compositions.
- the invention further relates to a process for increasing the surface energy of thermoplastics and polymeric molding compositions, as well as thermoplastics and polymeric molding compositions containing the polyhydroxy-functional polysiloxanes.
- thermoplastics have a nonpolar, electrically well insulating and water repellent surface with low surface energy. Therefore
- thermoplastic articles with complex 3-D geometry can not be efficiently treated.
- the effect of polarizing such surfaces which causes an increase in the affinity for water-based formulations, is not permanent. After a certain storage time of the treated surfaces, the surface energy is reduced again. In these cases, the surface must be re-treated prior to coating.
- thermoplastic materials It is therefore an object of the present invention to provide an additive which increases the surface energy of thermoplastic materials. It is another object of the present invention to provide a method for increasing the surface energy of thermoplastic materials. It is a further object of the present invention to provide a formulation for increasing the surface energy of thermoplastic materials which can be printed or coated immediately or after storage and which need not be pretreated prior to the final coating step.
- the method involves blending small amounts of polyhydroxy functional polyether modified polysiloxanes with very different low, medium and high density thermoplastic materials of different polarities or polymeric compositions to modify the surface energy.
- the thermoplastic substrates and polymeric molding compositions thus obtained can be coated with aqueous printing inks or paints and varnishes. The resulting coatings have improved adhesion.
- Polyhydroxy-functional polyether-modified polysiloxanes are known in principle from numerous patents.
- US 2006/0034875 describes the synthesis of polyglycerol-modified polysiloxanes for use as emulsifiers. These emulsifiers are suitable for storing oils by incorporation under swelling in cosmetic preparations.
- EP 1 489 128 describes the synthesis of polysiloxanes modified with polyglycerol and their use in tissues and cosmetic formulations.
- the claimed advantages are improved wetting and adsorption on different substrates, less yellowing and skin irritation.
- US 2005/0261133 discloses the preparation and use of glycerol-modified polysiloxanes as spreading agents for chemical crop protection formulations.
- the disclosed products reduce the surface tension of crop protection products to improve the spreading of pesticides and insecticides on leaf surfaces.
- WO 2007/075927 describes branched polyether-modified polysiloxanes as additives for coatings which improve the hydrophilicity and the tendency to fouling of coatings.
- the branched polyethers are based on oxetanes, glycidol and / or alkylene oxides.
- DE 10 2006 031 152 discloses branched polyhydroxy-functional polysiloxanes which can be prepared by addition of hydroxyoxetane-based polyhydroxy-functional allyl polyethers onto alkylhydrogen siloxanes.
- the disclosed products are described for increasing the hydrophobic and oleophobic Properties of coating surfaces, as well as and for improving release properties in polymeric molding compositions.
- WO 2008/003470 describes the use of polyhydroxy-functional polysiloxanes in thermoplastics for improving the dirt-repellent and anti-adhesive properties of the thermoplastic.
- the polysiloxanes are over
- thermoplastics obtained in WO 2008/003470 are particularly dirt-repellent and anti-adhesive.
- additives to hydrophilize polyolefin surfaces e.g. Polypropylene
- the surface-modifying additives described herein include linear polyethylene glycols and branched hydroxy-terminated four-arm polyethylene glycols. There was no significant improvement in surface hydrophilicity with the linear polyethylene glycols and the branched hydroxy-terminated four-arm polyethylene glycols.
- the patent literature also discloses fatty alcohols and fatty acid derivatives of polyethylene glycols to increase the surface energy of polyolefins (e.g., U.S. 5,464,691, U.S. 5,240,985, U.S. 5,271,991, U.S. 5,272,196, U.S. 5,281,438, U.S. 5,328,951, U.S. 5,001,015).
- fatty alcohols and fatty acid derivatives of polyethylene glycols to increase the surface energy of polyolefins
- thermoplastics Although other additives have been described which increase the surface energy of thermoplastics, there is a need for small amount substances that are useful in a variety of thermoplastics and polymeric molding compounds, particularly thermoplastics having a higher proportion of crystalline zones which have no negative effect on the processing ability and have mechanical or optical properties of the additive-thermoplastic mixtures.
- the object of the present invention relates to increasing the surface energy of thermoplastics.
- the object was to provide thermoplastics which show improved printability, paintability and adhesion of water-based formulations. Furthermore, the additives added to give these improved properties should as far as possible not affect the other properties of the thermoplastics. The added additives should also be able to develop their activity in relatively small amounts.
- (Meth) allyl polyether is formed which comprises at least one branched Polyglycidolrest and / or at least one branched Polyoxetanrest, and then
- Thermoplastics and polymeric molding compositions to which these addition products are added are distinguished by high surface energies and improved printability in comparison to thermoplastics or polymeric molding compositions to which such addition products have not been added.
- the addition products according to the invention also do not significantly affect the other properties of the thermoplastics.
- These polyhydroxy-functional polysiloxanes can be added to the thermoplastics in relatively small amounts (additive amounts).
- the physical properties of For example, in terms of mechanical and optical properties, weathering resistance, and processability, these are not affected by the low concentrations of the additive.
- the thermoplastics and polymeric molding compositions containing the addition products of the invention exhibit additional typical properties resulting from the increase in surface energy, such as. eg antistatic properties.
- the inventive method for increasing the surface energy of thermoplastics and polymeric molding compositions comprises the mixture of small amounts of polyhydroxy-functional polyether-modified polysiloxanes with very different polymeric molding materials or low, medium and high density thermoplastic materials with different crystallinities and polarities for the homogeneous modification of the surface energy.
- the polyhydroxy-functional polyether-modified polysiloxanes dispersed in the thermoplastic material or polymeric molding compositions segregate to the surface of the thus blended thermoplastic material to hydrophilize it.
- the polyhydroxy-functional polysiloxane which can be used according to the invention for improving the printability of thermoplastics and polymeric molding compositions can be prepared by adding at least one branched polyhydroxy-functional allyl polyether to an Si-H-functional polysiloxane.
- branched polyether here stands for a polyether in which the main chain and at least one side chain contain polyether bridges
- this branched polyether has a hyperbranched structure
- the branches can be detected, for example, by NMR analysis.
- the Si-H-functional polysiloxane may be a chain polymer, a cyclic polymer, a branched polymer or a crosslinked polymer. It is preferably a chain polymer or a branched polymer. Most preferably it is a chain polymer.
- the Si-H-functional alkyl-polysiloxane is preferably an alkyl-hydrogen-polysiloxane which can be reacted with corresponding C 1 -C 4 -alkylene, -aryl or Aralkylene is substituted.
- the alkyl-hydrogen-polysiloxane is preferably a methyl-hydrogen-polysiloxane.
- polyhydroxy-functional chain-like polysiloxanes which can be represented by the following general formula (I):
- R polyhydroxy-functional branched polyglycidol polyether radical which consists of or contains a branched polyglycidol group, and / or
- polyhydroxy-functional branched polyoxetanes-polyether radical which consists of a branched polyoxetane or this contains R 2 and R 3 independently of one another
- the copolymers corresponding to the structural formula given above may be random copolymers, alternating copolymers or block copolymers. Also, a gradient can be formed by the sequence of the side chains along the silicone backbone.
- the A units of the formula - [SiR 4 (ZRK)] - O-, the B units -Si (R 4 ) 2 -O- and the C units - [SiR 4 (ZR)] - O- can be found in the Polysiloxane be arranged in any order.
- the chain polyhydroxy-functional polysiloxanes consist of 2 to 9 siloxane units.
- the chain-like polyhydroxy-functional polysiloxanes according to the invention preferably consist of 3 to 7 siloxane units, particularly preferably of 3 to 4 siloxane units and very particularly preferably of 3 siloxane units.
- branched polyhydroxy-functional (meth) allyl polyether which is prepared by ring-opening polymerization of glycidol or hydroxyoxetanes with one or more hydroxy-bearing (meth) allylic starter compounds to let.
- These branched polyhydroxy-functional (meth) allyl polyethers can be introduced by addition into the polysiloxane. They usually have exactly one (meth) allyl group, ie they are mono (meth) allylic and thus act not as a crosslinker or linker between two or more Si-H-functional polysiloxanes.
- the (meth) allylic starting compounds have at least one hydrogen-active group.
- Hydrogen-active groups are understood as meaning those functional groups which carry an active hydrogen atom bonded to a heteroatom, for example hydroxyl groups (-OH), amino groups (-NH 2 ), aminoalkyl groups (-NH (alkyl)) or thiol groups (-SH) ,
- allyl alcohol ethylene glycol monoallyl ether
- allyl polyethylene glycol allyl polypropylene glycol
- allyl polyethylene / polypropylene glycol copolymers where ethylene oxide and propylene oxide can be arranged in random structure or in blocks.
- Allylpolyethylene glycol used Very particular preference is given to allyl alcohol and ethylene glycol monoallyl ether.
- methallyl compounds e.g. Methallyl alcohol, Methallylpolyethylenglykol, etc. If in the context of this invention is spoken of allylic starter compounds, this term also includes the methallylic analogs, without this having to be addressed separately. When the term “(meth) allylic” is used, it also includes “allylic” as well as “methallylic”.
- allylic and methallylic starter compounds such as allylphenol can be used.
- Other possibilities are the use of (meth) allylic starter compounds with hydrogen-active groups other than the hydroxy group, such as amino (-NH 2, -NH (alkyl)) or thiol derivatives.
- Di-, tri- or polyfunctional starter compounds can also be used which show advantages in terms of polydispersity and some physical properties.
- the hydroxy groups of the di- or polyfunctional monoallylic starting compound are preferably etherified with a di-, tri- or polyol, for example a dihydroxy, trihydroxy or polyhydroxy ester or polyester or a dihydroxy, trihydroxy or polyhydroxy ether or polyether such as a 5,5-dihydroxyalkyM, 3-dioxane, a 5,5-di (hydroxyalkoxy) -1, 3-dioxane, a 5,5-di (hydroxyalkoxyalkyl) -1,3-dioxane, a 2- Alkyl-1,3-propanediol, a 2,2-dialkyl-1,3-propanediol, a 2-hydroxy-1,3-propanediol, a 2,2-dihydroxy-1,3-propanediol, a 2-hydroxy 2-alkyl-1,3-propanediol, a 2-hydroxy 2-alkyl-1,3-propanediol,
- Preferred embodiments of said di- or polyfunctional monoallylic starting compound are etherified with dimers, trimers or polymers of 5,5-dihydroxyalkyl-1,3-dioxanes, 5,5-di (hydroxyalkoxy) -1, 3-dioxanes, 5,5- Di (hydroxyalkoxyalkyl) -1, 3-dioxanes, 2-alkyl-1,3-propanediols, 2,2-dialkyl-1,3-propanediols, 2-hydroxy-1,3-propanediols, 2,2-dihydroxy-1 , 3-propanediols, 2-hydroxy-2-alkyl-1,3-propanediols, 2-hydroxyalkyl-2-alkyl-1,3-propanediols, 2,2-di (hydroxyalkyl) -1, 3-propanediols, 2- Hydroxyalkoxy-2-alkyl-1,3-propanediols,
- alkyl radicals mentioned are preferably linear or branched C 1 -C 24-, such as, for example, C 1 -C 12 or C 1 -C 6 -alkyls or alkenyls. Particularly preferred as alkyl radicals are methyl and ethyl radicals.
- alkoxy preferably represents methoxy, ethoxy, propoxy, butoxy, phenylethoxy and comprises up to 20 alkoxy units or a combination of two or more alkoxy units.
- allylic starting compound having at least two hydroxyl groups include monoallyl ethers or Monomethallylether of glycerol, of trimethylolethane and trimethylolpropane, monoallyl or mono (methallyl) ethers of di (trimethylol) ethane, di (trimethylol) propane and pentaerythritol and of 1, ⁇ -diols, such as mono-, di-, tri - And polyethylene glycols, mono-, di-, tri- and polypropylene glycols, 1, 4-butanediol, 1,5-pentanediol, 1, 6-hexanediol, 1, 6-cyclohexanedimethanol and their corresponding alkyl, alkylalkoxy and alkoxyalkyl-substituted Analogs and their derivatives.
- alkyl and "alkoxy" correspond to the definitions given above.
- the allylic starting compound having at least two hydroxy compounds derived from a compound selected from the group consisting of 5,5-dihydroxymethyl-1, 3-dioxane, 2-methyl-1, 3-propanediol, 2-methyl-2-ethyl-1 , 3-propanediol, 2-ethyl-2-butyl-1,3-propanediol, neopentyl glycol,
- allylic starting compounds having two hydroxyl groups such as, for example, trimethylolpropane monoallyl ether or glycerol monoallyl ether, are particularly preferably used.
- the ring-opening polymerization is carried out with glycidol or with mixtures of glycidol with glycidyl ethers and / or with alkylene oxides.
- the polymerization of the mixtures of glycidol with glycidyl ethers and / or with alkylene oxides can be carried out in random structure or in blocks.
- the glycidyl ethers may be alkyl or polyalkylene oxide substituted.
- alkyl-substituted here preferably stands for a substitution with linear or branched C 1 -C 24 -, such as, for example, C 1 -C-12 or C 1 -C 6 -alkylene or alkenylene. substituted "for a substitution with methyl, ethyl, propyl and / or butyl.
- polyalkylene oxide-substituted means a combination of two or more alkylene oxide units, preferably for substitution with polyethylene oxide, polypropylene oxide and / or polybutylene oxide units.
- glycidol is used as the main monomer.
- the allyl-functional hyperbranched polyglycidol can be prepared via a ring-opening polymerization process.
- anionic ring-opening polymerization with slow monomer addition is particularly preferably carried out.
- the hydroxy groups of the allyl functional initiator are partially deprotonated by alkali metal hydroxides or alkoxides, and after removal of the water or alcohol by distillation, a mixture of initiator and initiator alkoxide is obtained. Then the glycidol is added dropwise to the initiator / initiator at a temperature between 80 ° C. and 100 ° C.
- the alkali is removed after the reaction e.g. removed by treatment with an acidic ion exchanger. Further details on reactions, reactants and procedures can be found in the following publications:
- EP1785410 Polyglycerol monoethers and process for producing the same
- the hydroxy groups may remain free or may be partially or completely modified to allow for optimal compatibility in the application formulation.
- the polyhydroxy-functional allyl compounds have at least one branching generation, preferably at least two branching generations.
- the term "generation" is also used in the present case to designate pseudo generations, as in WO 02/40572
- the branching can be detected, for example, by NMR analysis
- the polydispersity (M w / M n ) of the branched allyl compounds is ⁇ 3, preferably ⁇ 2, and more preferably ⁇ 1.5.
- the synthesis of the polyhydroxy-functional polysiloxanes preferably takes place via addition of the allyl polyether obtained by reacting the allylic starting compound with at least one glycidol to the Si-H-functional alkylpolysiloxane.
- the glycidol can be replaced by glycerol carbonate.
- the synthesis of glycerol carbonate and the reaction conditions under which these are converted to hyperbranched polyglycidols are known to those skilled in the art, for example, from Rokicki et al. in: Green Chemistry, 2005, 7, 529-539.
- hyperbranched polyglycidols can generally be obtained by ring-opening polymerization of either glycidol or glycerol carbonate.
- glycerol carbonate is used to prepare the hyperbranched polyglycidol structures.
- Glycerol carbonate can be produced more environmentally friendly than glycidol and, according to current knowledge, does not have the carcinogenicity of glycidol.
- These branched polyhydroxy-functional allyl polyethers can be introduced by addition into the polysiloxane.
- Such allylic starter compounds which have already been described in detail above, are ring-opening cationic polymerization with hydroxyoxetanes. These may be alkyl or hydroxyalkyl substituted.
- the hydroxyoxetanes used according to the invention are preferably at least one 3-alkyl-3- (hydroxyalkyl) oxetane, a 3,3-di (hydroxyalkyl) oxetane, a 3-alkyl-3- (hydroxyalkoxy) oxetane, a 3 Alkyl-3- (hydroxyalkoxyalkyl) oxetane or a dimer, trimer or polymer of a 3-alkyl-3- (hydroxyalkyl) oxetane, a 3,3-di (hydroxyalkyl) oxetane, a 3-alkyl-3-one (hydroxyalkoxy) oxetane or a 3-alkyl-3- (hydroxyalkoxyalky
- Alkyl as used herein preferably linear or branched C1-C24, such as C1-C1 2 -. Or Cr Ce, alkyls or alkenyls More preferably, the term “alkyl” refers to methyl and ethyl.
- alkoxy is preferably methoxy, ethoxy, Propoxy, butoxy, phenylethoxy and comprises up to 20 alkoxy units or a combination of two or more alkoxy units.
- At least one hydroxyoxetane is particularly preferably selected from the group consisting of 3-methyl-3- (hydroxymethyl) oxetane, 3-ethyl-3- (hydroxymethyl) oxetane, 3,3-di (hydroxymethyl) oxetane (trimethylolpropane oxetane) used. It is also possible to use mixtures of these compounds.
- the polyhydroxy-functional dendritic allyl compounds based on the ring-opening polymerization of hydroxyoxetanes have at least one branching generation, preferably one to two branching generations.
- the expression "generation” is also used in the present case for the designation of pseudo generations, as in WO 02/40572
- the branching can be detected, for example, by NMR analysis
- the polydispersity of the dendritic allyl compounds is preferably ⁇ 2.8, particularly preferably ⁇ 1, 7.
- the following formula (III) shows a preferably obtained dendrimer-like reaction product which can be obtained from trimethylolpropane monoallyl ether and ethoxylated first-generation trimethylolpropane oxetane. As can be seen from the formula, a first pseudo-generation dendrimer is formed.
- the polyhydroxy-functional polysiloxanes can be prepared by reacting at least one allylic starting compound with at least one oxetane and subsequent addition to the Si-H-functional alkylpolysiloxane. Preference is given to a reaction of the at least one starting allylic compound with at least one oxetane and subsequent addition to the Si-H-functional alkylpolysiloxane.
- the polyhydroxy-functional allyl polyethers obtained by ring-opening polymerization of glycidol or of hydroxyoxetanes may have different average numbers of hydroxyl groups in the molecule.
- the polyhydroxy-functional allyl polyethers have an average number of 2-10 hydroxy groups per molecule.
- the free hydroxyl groups of the allyl polyethers can also be alkoxylated before or after the hydrosilylation reaction with the Si-H-functional polysiloxane. They are preferably ethoxylated and / or propoxylated and / or butoxylated and / or alkoxylated with styrene oxide. In this case, pure alkoxylates or mixed alkoxylates can be prepared. Particularly preferably, the free hydroxyl groups of the allyl polyethers are ethoxylated.
- the free hydroxyl groups can also be chemically modified in other ways. Examples include methylation, acrylation, acetylation, esterification and conversion to urethane by reaction with isocyanates.
- An example of the latter reaction is the reaction of the hydroxy groups with e.g. TDI monoadducts, which can be prepared by the reaction of polyether monools with TDI (toluene diisocyanate).
- the proportion of free hydroxyl groups in the polyhydroxy-functional allyl polyether can also be used to control the polarity or the compatibility of the polyhydroxy-functional polysiloxane in the thermoplastic matrix. If many or all of the original hydroxy functions are retained, high polarity is obtained. On the other hand, if many or all of the original hydroxy groups are blocked, the molecule will be less polar.
- polyhydroxy-functional dendritic allyl compounds based on the ring-opening polymerization of glycidol and polyhydroxy-functional dendritic allyl compounds based on the ring-opening polymerization of hydroxyoxetanes may each be reacted alone or in combination with the alkylhydrogen siloxanes. When used in combination, both allyl compounds can be mixed in any proportion.
- allyl polyethers obtained by the alkoxylation of allyl alcohol or monoallyl ethers with one or more alcohols a plurality of hydroxyl groups with alkylene oxides, in particular ethylene oxide and / or propylene oxide and / or butylene oxide and / or styrene oxide.
- allyl polyethers which have been known for a long time, are referred to below as “unbranched allyl polyethers” for better distinction and lead to “unbranched polyether radicals" Z-RK in the polysiloxane.
- Both pure alkoxylates and mixed alkoxylates can be prepared.
- the alkoxylation may be block wise, alternating or random.
- the mixed alkoxylates may contain a distribution gradient with respect to the alkoxylation.
- the end groups or the end group of the unbranched allyl polyether may be hydroxy-functional, or else, as described above for the branched polyhydroxy-functional allyl polyethers according to the invention, for example by methylation or acetylation, be implemented.
- the unbranched polyether radical RK is an ethylene oxide ([EO]), a propylene oxide ([PO]) or an ethylene oxide-Propyle ⁇ oxid- copolymer of the following formula (III)
- the properties of the polysiloxane according to the invention can be influenced.
- the choice of suitable [EO]: [PO] ratios allows the hydrophobicity of the polysiloxane according to the invention to be controlled.
- copolymers corresponding to the structural formula given above may be random copolymers, alternating copolymers or block copolymers. Also, a gradient can be formed by the sequence of the alkylene oxide units.
- the reaction can be carried out in such a way that the unbranched allyl polyethers and the branched allyl polyethers are added successively to the Si-H-functional alkylpolysiloxane.
- the allyl polyethers can also be mixed before addition so that then the Allylpolyethermischung is added to the Si-H-functional alkyl-polysiloxane.
- allyl polyesters obtained by the esterification of alcohols with allylic double bond (1-alkenols, such as 1- Hexenol, or hydroxy-functional allyl polyethers, such as ethylene glycol monoallyl ether, diethyl glycol monoallyl ether or higher homologues
- hydroxycarboxylic acids such as 1- Hexenol
- cyclic esters such as ethylene glycol monoallyl ether, diethyl glycol monoallyl ether or higher homologues
- the esterification takes place via a ring-opening polymerization with propiolactone, caprolactone, valerolactone or dodecalactone, and derivatives thereof.
- the ring-opening polymerization takes place with caprolactone.
- Both pure polyester and mixed polyester can be produced.
- esterification may be block wise, alternating or random.
- the mixed polyesters may contain a distribution gradient with respect to the esterification.
- the end groups of the allyl polyester may be hydroxy-functional, or else be reacted, for example, by methylation or acetylation.
- the reaction can be carried out so that the allyl polyesters and the branched allyl polyethers are successively added to the Si-H-functional alkyl-polysiloxane.
- the branched allyl polyethers and the allyl polyesters can also be mixed before addition, so that then this mixture is added to the Si-H-functional alkyl-polysiloxane.
- polyhydroxy-functional polysiloxanes To be able to adapt tolerances of the polyhydroxy-functional polysiloxanes with the thermoplastics or polymeric molding compositions, it may be useful to use in combination with the polyhydroxy-functional allyl compounds according to the invention also mixtures of the above-mentioned unbranched allyl polyethers and allyl polyesters.
- the compatibilities of the polyhydroxy-functional polysiloxanes can be adapted to a wide variety of matrices.
- polyhydroxy-functional polysiloxanes for example in polycarbonates, can be incorporated in the polyhydroxy-functional polysiloxanes corresponding polycarbonate modifications, as z. As described in US 6,072,011.
- the Si-H-functional alkylpolysiloxanes used can also be strictly monofunctional, that is to say have only one silane-hydrogen atom. With them, preferred compounds can be produced in which exactly one of the groups R 2 or R 3 is a radical R.
- the monofunctional Si-H-functional alkylpolysiloxanes can be represented, for example, by the following general formula (V):
- the group R 2 is the radical R.
- linear monofunctional polysiloxanes can be carried out, for example, via a living anionic polymerization of cyclic polysiloxanes.
- the SiH (R 4 ) 2 functionalization of the end group can be carried out with functional chlorosilanes, for example dialkylchlorosilane, analogously to the following reaction scheme, according to the procedure known to one of ordinary skill in the art.
- functional chlorosilanes for example dialkylchlorosilane
- linear, monofunctional polysiloxanes Another possibility for producing linear, monofunctional polysiloxanes is the equilibration of cyclic and open-chain polydialkylsiloxanes with terminally Si-difunctional polydialkylsiloxanes, as described in NoII (Chemie und Technologie der Silicones, VCH, Weinhelm, 1984).
- the reaction product consists of a mixture of cyclic, difunctional, monofunctional and non-functional siloxanes.
- the proportion of linear siloxanes in the reaction mixture can be increased by distillative removal of the lower cycles.
- the proportion of SiH (R 4 ) 2 -monofunctional polysiloxanes in the reaction product of the equilibration should be as high as possible.
- the effectiveness of the later products according to the invention is that the higher the proportion of monofunctional end products according to the invention, the higher the latter.
- the proportion of monofunctional end products according to the invention should preferably be the largest proportion in the mixture and preferably more than 40% by weight.
- Typical of cyclic impurities Depleted equilibration products preferably contain less than 40% by weight of difunctional and less than 15% by weight of nonfunctional linear polysiloxanes, especially the latter being less than 5% by weight, most preferably not at all.
- the hydrosilylation ie the reaction of the Si-H-functional alkylpolysiloxanes with the polyhydroxy-functional dendritic allyl compounds, takes place in the presence of an acid-buffering agent.
- an acid-buffering agent for example, sodium acetate or potassium acetate can be used in amounts of 25 to 200 ppm.
- the hydrosilylation is carried out under the following conditions: The Si-H-functional alkyl-polysiloxane is initially charged at room temperature. Then, for example, 25 to 100 ppm of a potassium acetate solution are added in order to suppress any possible side reactions. Depending on the expected exothermicity of the reaction, a part or the total amount of the allyl compounds is added.
- the reactor contents then become 75 ° C heated to 80 0 C.
- a catalyst such as a transition metal, for example, nickel, nickel salts, iridium salts, or preferably a Group VIII 1 noble metal, such as hexachloroplatinic acid or cis-diammineplatinum (II) dichloride, is then added. Due to the then running exothermic reaction, the temperature rises. Normally, an attempt is made to keep the temperature in a range of 90 ° C. to 120 ° C.
- the addition takes place in such a way that the temperature of 90 0 C to 120 ° C is not exceeded, but also a temperature of 70 0 C is not exceeded. After complete addition, the temperature is maintained for some time at 90 0 C to 12O 0 C. The course of the reaction can be monitored by infrared spectroscopy for the disappearance of the absorption band of the silicon hydride (Si-H: 2150 cm -1 ).
- the polyhydroxy-functional polysiloxanes of the invention can be subsequently modified chemically, for example, to adjust certain compatibilities with binders.
- the modifications can be carried out, for example, by acetylation, methylation, or reaction with monoisocyanates (eg TDI monoadducts which can be prepared by the reaction of polyether monools with TDI (toluene diisocyanate)).
- monoisocyanates eg TDI monoadducts which can be prepared by the reaction of polyether monools with TDI (toluene diisocyanate)
- acid functions can be incorporated by reaction with carboxylic acid anhydrides, for example with phthalic anhydride or succinic anhydride. In this case, the hydroxyl groups can be partially or completely reacted.
- one or more reactive double bonds can be incorporated into the molecule in addition to a carboxy group.
- the hydroxyl functions can also be reacted with structurally different anhydrides.
- the carboxy groups may also be salified with alkanolamines to achieve better water solubility.
- products can be obtained by subsequent acrylation or methacrylic on the hydroxy groups, which can be installed firmly in paint systems even in radiation-curing processes, such as UV and electron beam curing.
- the hydroxy groups can also be esterified by ring-opening polymerization with propiolactone, caprolactone, valerolactone or dodecalactone, as well as their derivatives.
- the ring-opening polymerization takes place with caprolactone.
- Both pure polyester and mixed polyester can be produced.
- the esterification be blockwise, alternating or random.
- the mixed polyesters may contain a distribution gradient with respect to the esterification.
- the present invention also relates to the above-mentioned and to the patent claims for the preparation of the polysiloxanes according to the invention.
- the present invention further provides a process for increasing the surface energy of thermoplastics and polymeric molding compositions, as well as the resulting thermoplastics and polymeric molding compositions themselves.
- thermoplastic or the polymeric molding compound before the polymerization 0.1 to 10 wt.%, Preferably from 0.1 to 7.5 wt.%, Most preferably from 0 , 1 to 5 wt.%, Based on the resulting thermoplastic or the resulting molding composition, added to at least one polysiloxane according to the invention.
- This inventive use of the polysiloxanes according to the invention as an additive in thermoplastics or polymeric molding compositions, the thermoplastics of the invention and polymeric molding compositions are obtained.
- thermoplastics of the invention or blends or polymeric molding compositions containing the polyhydroxy-functional polysiloxanes as active ingredient (100% form), in amounts of 0.1 to 10 wt .-%, preferably from 0.1 to 7.5 wt. %, very particularly preferably from 0.1 to 5% by weight, based on the thermoplastic or the polymeric molding composition or polymer mixture.
- thermoplastics produced with the polyhydroxy-functional polysiloxanes according to the invention can be used pigmented or unpigmented; moreover, the thermoplastics or blends and polymeric molding compounds can be commercially available fillers such as calcium carbonate, aluminum hydroxide, talc, wollasitonite and / or reinforcing fibers such as glass fibers, C Fibers and aramid fibers.
- polyhydroxy-functional polysiloxanes prepared thermoplastics, or - blends and polymeric molding compositions, other commercially available additives and / or additives, such as wetting agents and dispersants, sunscreens and aging inhibitors, acid scavengers and nucleating agents, and the like, and process aids, such as Schmier138. Release agents and so-called processing aids included.
- additives and / or additives such as wetting agents and dispersants, sunscreens and aging inhibitors, acid scavengers and nucleating agents, and the like
- process aids such as Schmier vers. Release agents and so-called processing aids included.
- the particular types and amounts of these additives or additives depend on the particular requirement of the final product to be produced. Likewise to the knowledge of the person who works in the respective requirement area. Usually, one or more of these additives, individually and / or combined with each other, depending on the type up to 8 wt.% (Based on the total mixture) is used.
- additives such
- Pigments or dyes - Plasticizers are usually one or more additives, individually and / or combined, up to 90 wt.% (Based on the total mixture) is used.
- Additives of this kind are generally available commercially and e.g. in Gumbleter / Müller, Plastics Additive Handbook 4th edition, Hansa Verlag; Kunststoff, 1993 described and listed.
- the polymeric molding compositions prepared with the polyhydroxy-functional polysiloxanes according to the invention are preferably polymeric molding compositions of unsaturated polyester resins, epoxy resins, vinyl ester resins, polyester resins, polyurethane resins and / or alkyd resins.
- the polymeric molding compositions can also be pigmented in any desired combination and / or filled with the abovementioned fillers or additives.
- thermoplastics in the context of the invention include, for example polyethylene, polypropylene, polyoxymethylene, ethylene vinyl acetates (EVA) poly (meth) acrylates, polyacrylonitrile, polystyrene, styrenic Plastics (eg ABS, SEBS, SBS), polyesters, polyvinyl esters, polycarbonates (PC), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyamides (PA), polybutadienes (PB), thermoplastic polyurethanes (TPU), thermoplastic elastomers (TPE) Polyvinyl chloride (with and without plasticizer), as well as polylactic acid (PLA).
- EVA ethylene vinyl acetates
- PA poly (meth) acrylates
- polyacrylonitrile polystyrene
- styrenic Plastics eg ABS, SEBS, SBS
- polyesters polyvinyl esters
- PC polycarbonates
- PET polyethylene
- thermoplastics can be filled and / or pigmented.
- thermoplastics within the meaning of the invention also includes mixtures (blends) of different types of thermoplastics
- the thermoplastics may, for example, also be spinnable thermoplastic fibers known to those of ordinary skill in the art, for example PP, polyester or polyamide fibers.
- the polysiloxanes according to the invention are particularly suitable for increasing the surface energy of thermoplastics and polymeric molding compositions.
- Thermoplastics and polymeric molding compounds are obtained which have typical properties resulting from the increase in surface energy, e.g. a reduced contact angle with water, improved antistatic properties, and improved adhesion of coatings such as paints or inks.
- thermoplastics and polymeric molding compositions for example, by measuring the static contact angle of the surface with
- Contact angle measuring devices are made, for example with a contact angle measuring device from Krüss (model Easy Drop, equipped with a camera).
- thermoplastics and polymeric molding compositions according to the invention have a higher surface energy than thermoplastics or polymeric molding compositions which do not contain the polysiloxanes according to the invention.
- thermoplastics and polymeric molding compositions can be characterized, for example, by applying a printing ink to the thermoplastic or the polymeric molding compound and then adhering the ink to the surface of the thermoplastic or polymer Form mass is checked. This can be done, for example, by pressing and removing an adhesive film (such as Tesafilm) on the printed surface before and / or after drying the ink.
- an adhesive film such as Tesafilm
- printing inks are understood as meaning colorant-containing preparations having a different consistency.
- inks are not intended to protect the printed substrate, but dye parts of the substrate during the typical printing process and leave other parts of the substrate undyed.
- the color layers formed during the typical printing process are much thinner than with paints.
- a typical printing ink may also contain fillers, binders, solvents, diluents and / or further auxiliaries.
- thermoplastics according to the invention and polymeric molding compositions have better printability than thermoplastics or polymeric molding compositions which do not contain the polysiloxanes according to the invention.
- polysiloxanes and thermoplastics or polymeric molding compositions of the invention can be used as an additive, but also as a masterbatch (concentrate) or as a direct compound.
- the polysiloxanes and thermoplastics or polymeric molding compositions according to the invention are generally used in intermediates (semi-finished products) and finished goods (end products) in the thermoplastic industry.
- the intermediate and end products can be produced, for example, by means of extrusion processes, injection molding or else special processes, such as rotational spin casting or compounding. For example, it can be a variety of slides.
- the thermoplastics or polymeric molding compositions according to the invention can thus be present for example in the form of extrudates, fibers, films or moldings. Additional subsequent processing steps such as fiber spinning, thermoforming and / or other processing methods known in the manufacturing industry may even exacerbate the effect of the products of this invention.
- the following examples illustrate the invention without being limiting: Examples I). Preparation of Allyl Polvethers 1 - 7
- Ethylene glycol monoallyl ether was slowly added, with the temperature rising to 35 ° C.
- the resulting brown-orange solution was left for 15 min. heated to 40 0 C. Subsequently, the temperature was raised to 90 0 C and within one hour
- the preparation of the allyl polyether 2-5 was carried out analogously to polyether 1, with the difference that a different initiator or other glycidol ratios were chosen.
- Allyl polyether 8 was prepared analogously to allyl polyether 1, with a different glycidol ratio (4 mol glycidol per 1 mol allyl starting compound) being chosen followed by alkoxylation with ethylene oxide. The subsequent ethoxylation was carried out by well-known method.
- Example 17 reaction of a methyl-hydrogen siloxane having the average formula MD 2 D-H ⁇ M and alpha-olefins and C8 allyl polyether 2
- Dowanol PM 1 -methoxy-2-propanol
- TOP33 ethoxylated trimethyloloxetane, Perstrop Specialty Chemicals, SE-Perstorp
- MPEG350 methanol-started polyethylene glycol with an average molecular weight of 350 (Ineos Oxide)
- polymer blends were initially applied to the laboratory mill (Polymix 110 L, Servitec) with a roll diameter of 110 mm, produced at a friction of 1, 2; the friction results from the different number of revolutions of the rollers (front 20 RPM / rear 24 RPM).
- the processing temperature was adapted to the respective thermoplastic to be tested (140 ° to 190 0 C), as well as the gap setting of 0.7 - 0.9 mm.
- 100 g of the thermoplastic polymer to be tested were first melted during the first 2 minutes, then the additive was added and then turned over for a further mixing time of 4 to 6 minutes (depending on the thermoplastic). Overall, a total mixing time, depending on the polymer of 4-10 min.
- the contact angles of the additized substrates were determined by means of contact angle measurements with demineralized water.
- a reduction in the contact angle with water on the surface indicates an increase in the surface tension of the substrate to be tested.
- the measurements were carried out under conditioned conditions (23 ° C., 65% relative humidity) using a contact angle measuring device from Krüss (model Easy Drop, equipped with a camera).
- the contact angles are with a associated analysis software evaluated.
- triple measurements were carried out.
- the specified characteristic values are mean values, existing deviations are displayed as +/-.
- the contact angle with water was always determined after 24 hours of conditioning.
- the homogeneity of the substrates (films) was determined by investigations of the top and bottom of the film. All information is given as a mean value from above and below; Deviations are recorded as +/-.
- thermoplastics used:
- HDPE High Density Polyethylene; MFI at 230 ° C / 2,16kg 7 g / 10 min. (Eraclene MP 90, Polimeri- Europe; characterization: HDPE with smal MW distribution - additivated with antioxidants)
- PPH - Polypropylene homopolymer MFI at 230 ° C / 2,16kg 25g / min.
- PPH 9069 Total - Petrochemicals; characterization - grade for non-wovens fabrics
- ABS - acrylonitrile butadiene styrene MVR at 220 ° C / 10 kg 26 cm 3/10 min.
- Magnum 8391 DOW Chemicals characerization - custom grade with medium impact resistance
- Table 4 shows some examples of the optimal dosage of the substance according to the invention (Example 8). Mentioned is the minimum amount of use in different polymers, which is necessary to achieve complete wetting (contact angle ⁇ 10 °).
- Carrier Accurel®XP 100; Membrana GmbH Accurel Systems
- the wetting behavior of the substrate can be adjusted to aqueous coating dispersions or aqueous printing inks. Since the most diverse paint and ink formulations are used commercially, the determination of the contact angle of water were used here for a clear comparison.
- the coating With the cutting side of an eraser (artist need) - held right to the sample surface - the coating is applied under pressure by pulling (moving sideways, not cutting) the knife to the ground or at Multi-layer systems until the layer to be assessed, scraped off.
- the coating must be scraped off in a width of several millimeters. For hard coatings you sometimes have to press with both hands on the knife. The knife must not be cutting (by inclining).
- This paint primer is a plastic dispersion (copolymer of acrylic acid esters and styrene).
- the wetting behavior (silicone disturbances) was assessed immediately after mounting.
- the adhesion test was carried out the following day.
- the ink was applied with a wire-wound rod in a layer thickness of 12 microns and then dried briefly with a hair dryer.
- the wetting behavior (silicone disturbances) was assessed immediately after mounting.
- the adhesion was tested with a Tesafilm immediately and after 24 h.
- a mixture of 100 g of polymer and additive in specified dosing series were mixed on the mill and pressed into films (description as before).
- the films were homogeneous and easy to produce.
- the films were conditioned under constant conditions (23 ° C./65% relative humidity) and then with a measuring device "Tera-Ohm-Meter 6206", the company Efltex by means of
- Example 8 was investigated in PPC. The surface resistance was evaluated after one day of conditioning. Surface resistance refers to the "electrical resistance" that opposes a material to a current that flows on the surface of the material.
- the substance according to the invention causes a reduction of the surface resistance and thus indicates a good antistatic effect.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- General Chemical & Material Sciences (AREA)
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09776977.2A EP2297230B1 (de) | 2008-07-08 | 2009-07-06 | Polyhydroxyfunktionelle polysiloxane zur erhöhung der oberflächenenergie von thermoplasten, verfahren zu ihrer herstellung und ihre verwendung |
US13/002,720 US20110294933A1 (en) | 2008-07-08 | 2009-07-06 | Polyhydroxyfunctional polysiloxanes for increasing the surface energy of thermoplastics, method for production and use thereof |
CA2729755A CA2729755A1 (en) | 2008-07-08 | 2009-07-06 | Polyhydroxyfunctional polysiloxanes for increasing the surface energy of thermoplastics, method for production and use thereof |
JP2011517011A JP2011527351A (ja) | 2008-07-08 | 2009-07-06 | 熱可塑性プラスチックの表面エネルギーを高めるためのポリヒドロキシ官能性ポリシロキサン類、その製法および使用 |
CN200980126423.5A CN102089355A (zh) | 2008-07-08 | 2009-07-06 | 用于增大热塑性塑料表面能的多羟基官能性聚硅氧烷、其制造方法及其应用 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102008032064A DE102008032064A1 (de) | 2008-07-08 | 2008-07-08 | Polyhydroxyfunktionelle Polysiloxane zur Erhöhung der Oberflächenenergie von Thermoplasten, Verfahren zu ihrer Herstellug und ihre Verwendung |
DE102008032064.1 | 2008-07-08 |
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WO2010003611A1 true WO2010003611A1 (de) | 2010-01-14 |
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ID=41119835
Family Applications (1)
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PCT/EP2009/004867 WO2010003611A1 (de) | 2008-07-08 | 2009-07-06 | Polyhydroxyfunktionelle polysiloxane zur erhöhung der oberflächenenergie von thermoplasten, verfahren zu ihrer herstellung und ihre verwendung |
Country Status (8)
Country | Link |
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US (1) | US20110294933A1 (de) |
EP (1) | EP2297230B1 (de) |
JP (1) | JP2011527351A (de) |
KR (1) | KR20110039336A (de) |
CN (1) | CN102089355A (de) |
CA (1) | CA2729755A1 (de) |
DE (1) | DE102008032064A1 (de) |
WO (1) | WO2010003611A1 (de) |
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WO2013017360A1 (de) | 2011-08-03 | 2013-02-07 | Evonik Goldschmidt Gmbh | Verfahren zur herstellung von verzweigten polyethercarbonaten und ihre verwendung |
WO2013017365A1 (de) | 2011-08-03 | 2013-02-07 | Evonik Goldschmidt Gmbh | Verfahren zur herstellung von polyethersiloxanen enthaltend polyethercarbonatgrundstrukturen |
JP2014506943A (ja) * | 2011-02-22 | 2014-03-20 | ビーエーエスエフ ソシエタス・ヨーロピア | グリセリンカーボネート及びアミンに基づく重合体 |
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WO2013017360A1 (de) | 2011-08-03 | 2013-02-07 | Evonik Goldschmidt Gmbh | Verfahren zur herstellung von verzweigten polyethercarbonaten und ihre verwendung |
WO2013017365A1 (de) | 2011-08-03 | 2013-02-07 | Evonik Goldschmidt Gmbh | Verfahren zur herstellung von polyethersiloxanen enthaltend polyethercarbonatgrundstrukturen |
DE102011109541A1 (de) | 2011-08-03 | 2013-02-07 | Evonik Goldschmidt Gmbh | Verwendung von Polysiloxanen enthaltend verzweigte Polyetherreste zur Herstellung von Polyurethanschäumen |
DE102011109614A1 (de) | 2011-08-03 | 2013-02-07 | Evonik Goldschmidt Gmbh | Verfahren zur Herstellung von verzweigten Polyethercarbonaten und ihre Verwendung |
US9051424B2 (en) | 2011-08-03 | 2015-06-09 | Evonik Degussa Gmbh | Process for preparing branched polyethercarbonates and use thereof |
Also Published As
Publication number | Publication date |
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JP2011527351A (ja) | 2011-10-27 |
KR20110039336A (ko) | 2011-04-15 |
EP2297230B1 (de) | 2014-11-05 |
DE102008032064A1 (de) | 2010-01-14 |
US20110294933A1 (en) | 2011-12-01 |
EP2297230A1 (de) | 2011-03-23 |
CA2729755A1 (en) | 2010-01-14 |
CN102089355A (zh) | 2011-06-08 |
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