WO2011033104A1 - Verwendung eines stereoisomerengemisches von diaminomethylcyclohexan als härter für epoxidharze - Google Patents
Verwendung eines stereoisomerengemisches von diaminomethylcyclohexan als härter für epoxidharze Download PDFInfo
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- WO2011033104A1 WO2011033104A1 PCT/EP2010/063794 EP2010063794W WO2011033104A1 WO 2011033104 A1 WO2011033104 A1 WO 2011033104A1 EP 2010063794 W EP2010063794 W EP 2010063794W WO 2011033104 A1 WO2011033104 A1 WO 2011033104A1
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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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
-
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
-
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
- C08G59/5026—Amines cycloaliphatic
-
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/68—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
Definitions
- the object of the present invention relates to a composition comprising at least one epoxy resin and a mixture comprising the 7 stereoisomers of diaminomethylcyclohexane in very particular proportions to one another, a process for the preparation of the composition, the use of the composition for the preparation of cured epoxies, adhesives, composite materials and moldings, a mixture containing the 7 stereoisomers of Diaminomethylcyclohe- xans in the specific proportions and the use of this mixture for the preparation of the composition.
- epoxy resins can be cured in various ways.
- the resin / hardener mixture must completely harden within a few hours even at temperatures ⁇ 120 ° C. after the mold filling process and lead to sufficiently stable material properties, since the sheets later have to withstand enormous loads.
- EP-B 0 443 344 and applications cited therein extensively describe the current state of the art for the curing of various epoxy resins having commercially available hardnesses. An important role is played by the so-called aminic hardnesses, since these are used in different chemical structures.
- EP-B 0 443 344 describes the use of diaminomethylcyclohexane as a hardener of epoxy resin systems.
- the influence of the regioisomer distribution on the curing rate of epoxy resins is revealed.
- An indication that certain proportions of the seven stereoisomers of Diaminomethylcyclohexans as a mixture has an influence on the curing behavior a composition containing an epoxy resin and the mixture is not described.
- aminic hardeners are classified according to their chemical structure in aliphatic, cycloaliphatic or aromatic types.
- a classification based on the degree of substitution of the amino group is possible, which may be either primary, secondary or even tertiary.
- tertiary amines however, a catalytic curing mechanism of epoxy resins is postulated, whereas for the secondary and primary amines each stoichiometric curing reactions are used to build the polymer network.
- primary amines react much faster than corresponding secondary amines of the same structural class. Also, it matters whether the amino group is substituted at a primary or secondary carbon atom.
- thermoset becomes too high. Additional additives for toughening must then be added, which makes the applications significantly more complex and cost-intensive.
- the composition containing the epoxy resin and hardener system must not cure during insertion into the mold or application to a substrate, as it can lead to stresses in the polymer network, which significantly reduce the durability.
- the problem-free processing by adjusting the reactivity of the hardener as required has great significance in the current production of coatings, floor coatings, moldings, (fiber-reinforced) composites and adhesives.
- This problem by skillful combination of different amine hardener.
- there are problems with mixing due to incompatibilities and viscosity differences or to large differences in reactivity.
- one amine hardener component is more compatible with epoxy resin than the other amine component. Therefore, no simultaneous reaction of the hardener components takes place, but results in an irregular curing with poor material properties or surface properties.
- amine curing agents with each other is therefore best when the basic chemical substances are as similar as possible.
- inert aromatic amines can be combined very well with each other. These mixtures also show good storage stabilities over a wide temperature range and over a long period of time.
- phase separations can quickly occur which lead to inhomogeneous mixtures and thus to uneven curing.
- EP 0443 344 As shown in EP 0443 344, a difference in reactivity can be achieved by the different regioisomers. However, EP-B 0443 344 does not disclose that the stereoisomer distribution also has a significant influence on the curing behavior in epoxy resins.
- the object of the present invention is therefore to provide a composition which makes it possible to adapt its curing behavior as needed to the curing conditions of the end products to be produced. This object is achieved by a composition comprising
- the mixture containing 7 isomers is dissolved after distillation in tetrahydrofuran, the solution is injected into the gas chromatograph with an injection temperature of 100 ° C, an inlet pressure of 1 bar and a heating rate of 1 ° C / min until a temperature of 120 ° C is reached, then the heating rate to 5 ° C / min is maintained and maintained up to the final temperature of 250 ° C, then the temperature of 250 ° C is maintained for 10 min and throughout the measurement, the speed of the enriched with the mixture
- Helium is set at 40 ml / min and the measurement is operated at a split ratio of 1 to 40, and
- composition according to the invention characterized in that the 7 isomers of 2,4- and 2,6-diamino-1-methylcyclohexans are obtainable by hydrogenating a mixture containing 75 to 85 wt .-% 2,4-toluenediamine and 15 bis 25% by weight of 2,6-toluenediamine
- composition according to the invention characterized in that the hydrogenation is carried out using a catalyst containing ruthenium.
- the composition according to the invention characterized in that the hydrogenation was carried out in solution or melt at temperatures in the range of> 210 ° C and the GC area percent
- composition of the invention characterized in that the hydrogenation was carried out in solution at temperatures in the range of 210 to 239 ° C and the GC area percent
- composition according to the invention characterized in that the hydrogenation was carried out in the melt at temperatures in the range of 210 to 239 ° C and the GC area percent
- composition of the invention characterized in that the hydrogenation is carried out in the melt at temperatures> 240 ° C and the GC area percent
- composition of the invention characterized in that the hydrogenation is carried out in solution at temperatures in the range of 170 to 209 ° C and the GC area percent
- composition of the invention characterized in that the hydrogenation is carried out in solution at temperatures in the range of 150 to 169 ° C and the GC area percent
- composition of the invention characterized in that the hydrogenation is carried out in solution at temperatures in the range of 130 to 149 ° C and the GC area percent for peak 1 in the range of 4.0 to 7.9%
- composition of the invention characterized in that the hydrogenation is carried out on a fixed bed catalyst at a maximum temperature of 155 to 175 ° C and the GC area percent
- composition according to the invention characterized in that the hydrogenation is carried out using a catalyst containing ruthenium.
- composition according to the invention characterized in that the hydrogenation was carried out in solution or melt at average temperatures in the range of> 210 ° C and the GC area percent
- composition of the invention characterized in that the hydrogenation was carried out in solution at average temperatures in the range of 210 to 239 ° C and the GC area percent for peak 1 in the range of 33.5 to 45.9%
- composition of the invention characterized in that the hydrogenation was carried out in the melt at average temperatures in the range of 210 to 239 ° C and the GC area percent
- composition of the invention characterized in that the hydrogenation is carried out in the melt at average temperatures> 240 ° C and the GC area percent
- composition of the invention characterized in that the hydrogenation is carried out in solution at average temperatures in the range of 170 to 209 ° C and the GC area percent
- composition of the invention characterized in that the hydrogenation is carried out in solution at average temperatures in the range of 150 to 169 ° C and the GC area percent
- composition of the invention characterized in that the hydrogenation in solution at average temperatures in the range of 130 to
- the “average temperature” is defined by the arithmetic mean of the reactor inlet temperature and the reactor outlet temperature Preferably, the inlet and outlet temperatures do not differ by more than 10 ° C.
- composition of the invention characterized in that the hydrogenation was carried out batchwise.
- composition of the invention is advantageous, characterized in that the hydrogenation was carried out continuously.
- the composition according to the invention characterized in that the epoxy resin is selected from the group of glycidic polyether, glycidol esters and glycidamines.
- composition according to the invention is advantageous if the stoichiometric ratio of epoxide groups to reactive hydrogen peroxide on an amine group of the mixture according to the invention is in the range from 0.7 to 1.2.
- Another object of the invention is a process for the preparation of the composition according to the invention, characterized in that the epoxy resin is mixed with the mixture at temperatures in the range of 0 ° C to 70 ° C.
- Another object of the invention is the use of the composition according to the invention for the preparation of cured epoxy resins.
- Another object of the invention is a cured epoxy resin obtainable by curing the composition.
- Another object of the invention is an adhesive containing the composition of the invention.
- Another object of the invention is a molded article obtainable by curing the composition of the invention in a mold.
- Another object of the invention is a mixture containing the 7 isomers of 2,4- and 2,6-diamino-1-methylcyclohexans in the ratio of 75 to 95 wt .-% 2.4 to 5 to 25 wt .-% 2 , 6-diamino-1-methylcyclohexans, characterized in that the GC area percent of the 7 isomers, ordered by ascending retention times, gas chromatography with a 30 m long, an inner diameter of 0.25 mm and a film thickness of 0.5 ⁇ containing column which is operated as a mobile phase with helium and contains as stationary phase 35% by weight of diphenyl and 65% by weight of dimethylpolysiloxane, operated at temperatures in the range of 100 to 250 ° C.
- a flame ionization detector which is operated at 280 ° C, the mixture containing 7 isomers is dissolved after distillation in tetrahydrofuran, the solution in the gas and a heating rate of 1 ° C / min until a temperature of 120 ° C is reached, then the heating rate is changed to 5 ° C / min and until maintaining the final temperature of 250 ° C, then maintaining the temperature at 250 ° C for 10 minutes, adjusting the rate of mixture enriched helium to 40 ml / min throughout the measurement, and measuring at a split ratio of 1 is operated to be determined and 40
- peak 7 are in the range from 1.0 to 10.0%, the sum of the GC area percent based on the amount of 2,4- and 2,6-diamino-1-methylcyclohexane used being 100% and
- peak 7 in the range from 2.6 to 3.6%, the sum of the GC area percent of the peaks 1 to 7 based on the amount of 2,4- and 2,6-diamino-1-methylcyclohexane used 100%, excepted.
- the mixture according to the invention characterized in that the 7 isomers of 2,4- and 2,6-diamino-1-methylcyclohexans are obtainable by hydrogenating a mixture containing 75 to 85 wt .-% 2,4-toluenediamine and 15 bis 25 wt .-% of 2,6-toluenediamine by means of a supported on alumina ruthenium-containing catalyst at temperatures or at average temperatures in the range of 130 to> 240 ° C.
- Another object of the invention is the use of the mixture according to the invention for the preparation of the composition according to the invention.
- composition of the invention comprises at least one epoxy resin and a mixture containing the 7 isomers of 2,4- and 2,6-diamino-1-methylcyclo hexanes in the ratio of 75 to 95 wt .-% 2,4- to 5 to 25 wt .-% 2,6-diamino-1 - methylcyclohexane.
- the epoxy resins are selected from the group of glycidyl polyethers, glycidic polyesters and glycidamines.
- the epoxy resins and / or epoxy resin mixtures to be used preferably contain epoxy resins selected from the group consisting of bisphenol A bisglycidyl ether (DGEBA), bisphenol F bisglycidyl ether, bisphenol S bisglycidyl ether (DGEBS), tetraglycidylmethylenedianiline (TGMDA), epoxy resin.
- DGEBA bisphenol A bisglycidyl ether
- DGEBS bisphenol S bisglycidyl ether
- TGMDA tetraglycidylmethylenedianiline
- Novolacs the reaction products of epichlorohydrin and phenolic resins (novolac)
- cycloaliphatic epoxy resins such as 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate and hexahydrophthalic acid diglycidyl ester.
- the epoxy resins may also contain other Reducationver Printerner. These are selected from the group consisting of 1,4-butanediol bisglycidyl ether, 1,6-hexanediol bisglycidyl ether, glycidyl neodecanoate, glycidyl versatate, 2-ethylhexyl glycidyl ether, Ce-C 10 -alkyl glycidyl ether, C 12 -C 14 -alkyl glycidyl ether, p-tert-butyl glycidyl ether, butyl glycidyl ether , Nonylphenyl glycidyl ether, p-tert-butylphenyl glycidyl ether, phenyl glycidyl ether, o-cresyl glycidyl ether, polyoxypropylene glycol diglycidyl ether,
- TMP Trimethylolpropane triglycidyl ether
- TG PAP glycerol triglycidyl ether
- TG PAP triglycidyl para-amino phenol
- the mixture of 7 isomers of 2,4- and 2,6-diamino-1-methylcyclohexane contained in the composition in the ratio of 75 to 95% by weight 2,4- to 5 to 25% by weight 2,6- Diamino-1-methylcyclohexane is obtained by hydrogenating a mixture of 75 to 85% by weight of 2,4-toluenediamine (2,4-TDA) and 15 to 25% by weight of 2,6-toluenediamine (2.6 -TDA).
- Preferred is a mixture of 2,4- to 2,6-TDA in the range of 77 to 83 wt .-% to 17 to 23 wt .-%.
- MDACH 2,4- and 2,6-diamino-1-methylcyclohexane
- H is the mixture according to the invention which contains the 7 isomers of the 2,4- and 2,6-di- amino-1-methylcyclohexane in the ratio of 75 to 95 wt .-% 2,4- to 5 bis
- distillation 25% by weight of 2,6-diamino-1-methylcyclohexane is purified by distillation.
- any distillation column known to those skilled in the art can be used. Preference is given to a packed column with wire nets. Particular preference is given to those packed columns which have a theoretical plate number of at least 5.
- the distillation is preferably carried out at reduced pressure, particularly preferably at pressures in the range from 5 to 15 mbar. If the distillation is carried out in the range from 5 to 15 mbar, the isomer mixture of the 7 isomers of 2,4- and 2,6-diamino-1-methylcyclohexane (MDACH) is obtained at temperatures in the range from 75 to 90 ° C. as top product.
- MDACH 2,4- and 2,6-diamino-1-methylcyclohexane
- the gas chromatograph is equipped with a 30 m long column, which has an inner diameter of 0.25 mm and a film thickness of 0.5 ⁇ .
- the column itself contains as stationary phase 35 wt .-% diphenyl and 65 wt .-% dimethylpolysiloxane.
- the column RTX35-amine from Resteck Corporation is used.
- Helium is used as the carrier gas or mobile phase. The rate of helium is set at 40ml / min so that with a set split ratio of 40: 1, there is a constant flow of 1 mL / min He across the column.
- the gas chromatograph has to determine the substances to be examined on a flame ionization detector, which is operated at 280 ° C.
- the column in the gas chromatograph is operated at a temperature in the range of 100 to 250 ° C.
- a defined amount of a standard is added to the distilled mixture of the invention dissolved in THF, with its area percent being the area percentages of peaks 1 to 7 of the 7 isomers of 2,4 and 2,6 -Diamino-1-methylcyclohexans be compared.
- the distilled and dissolved in THF and staggered with the standard mixture according to the invention is injected at an injection temperature of 100 ° C and an inlet pressure of 1 bar in the column.
- a heating rate of 1 ° C / min is set, which is maintained until a temperature for the column of 120 ° C is reached. Once this temperature is reached, the heating rate of the column is changed to 5 ° C / min and maintained up to the final temperature of 250 ° C. Subsequently, the column temperature is maintained at 250 ° C for 10 minutes.
- the GC area fraction of the peak 2 of the 7 isomers of 2,4- and 2,6-diamino-1-methylcyclohexans determined by gas chromatography by the method described above, at hydrogenation temperatures in the range of 130 to> 240 ° C in the range of 0.3 to 9.0%, at hydrogenation temperatures in the range of 130 to 169 ° C in the range of 0 to 1, 6%, at hydrogenation temperatures in the range of 170 to
- the GC area fraction of the peak 6 of the 7 isomers of 2,4- and 2,6-diamino-1-methylcyclohexans determined by gas chromatography by the method described above, at hydrogenation temperatures in the range of 130 to> 240 ° C in the range of 8.0 to 40.0%, at hydrogenation temperatures in the range of 130 to 149 ° C in the range of 36.9 to 40.0%, at hydrogenation temperatures in the range of 150 to 169 ° C in the range of 26.4 to 36, 8%, at hydrogenation temperatures in the range of
- the GC area fraction of the peak 7 of the 7 isomers of 2,4- and 2,6-diamino-1-methylcyclohexans, determined by gas chromatography by the method described above, at hydrogenation temperatures in the range of 130 to> 240 ° C in the range of From 1.0 to 10.0%, at hydrogenation temperatures in the range of from 130 to 149 ° C in the range of from 8.5 to 10.0%, at hydrogenation temperatures in the range of from 150 to 169 ° C in the range of from 5.5 to 8, 4%, at hydrogenation temperatures in the region of 170 to 239 ° C in the range of 2.5 to 5.4% and at hydrogenation temperatures in the range of> 240 ° C in the range of 1, 0 to 3.2%, with a peak 7, ranging from 2.6 to 3.6 GC area percent and determined by the above GC method is excluded.
- the sum of the surface percentages of the peaks 1 to 7 is 100%, based on the amount of MDACH used.
- the hydrogenation can be carried out with all hydrogenation catalysts known to those skilled in the art, such as catalysts containing rhodium, ruthenium, palladium, platinum or nickel.
- catalysts containing rhodium, ruthenium, palladium, platinum or nickel Preference is given to ruthenium-containing catalysts for the hydrogenation.
- the hydrogenation can be carried out in suspension in solution or in the melt or on a fixed bed catalyst in solution or in the melt. Regardless of the manner in which the hydrogenation catalyst is used, the process can be carried out batchwise or continuously.
- the hydrogenation in suspension in the melt is preferably carried out continuously.
- the hydrogenation of the 2,4- and 2,6-TDA in the ratio of 75 to 85% by weight of 2,4 to 15 to 25% by weight of 2,6-TDA can be carried out at temperatures in the range from 130 to> 240 ° C take place. Preference is given to temperatures in the range from 130 to 270 ° C., more preferably in the range from 140 to 250 ° C.
- temperatures in the range of 140 to 270 ° C are preferred. Particularly preferred are temperatures in the range of 200 to 250 ° C for the suspension.
- the temperatures are preferably in the range from 130 to 250 ° C., particularly preferably in the range from 140 to 180 ° C.
- the pressure during hydrogenation of the 2,4- and 2,6-TDA in the ratio of 75 to 85% by weight of 2,4 to 15 to 25% by weight of 2,6-TDA is in the range of 90 to 350 bar, preferably in the range of 100 to 300 bar.
- the pressure is preferably in the range of 150 to 300 bar, more preferably in the range of 200 to 250 bar.
- the pressure is preferably in the range of 100 to 300 bar. Particularly preferred in the range of 150 to 250 bar.
- the ratios of 2,4- to 2,6 TDA need not therefore correspond to the ratio of 2,4- to 2,6-diamino-1-methylcyclohexane, but are in the range of 75 to 95 wt .-% 2.4 to 15 to 25% by weight of 2,6-diamino-1-methylcyclohexane.
- the mixture according to the invention comprising the 7 isomers of 2,4- and 2,6-diamino-1-methylcyclohexane may contain further hardeners for epoxides known to the person skilled in the art. These further hardeners are selected from the group of amines, anhydrides and imidazoles.
- the stoichiometric ratio of epoxide groups (according to epoxy equivalent weight EEW) to amino groups (according to active hydrogen equivalent weight AHEW) of the mixture containing 2,4- and 2,6-diamino-1-methylcyclohexane is in the range of 0.7 to 1.2, more preferably in the Range from 0.9 to 1, 1.
- further fillers may be present either in the mixture and / or in the epoxy resin.
- Further fillers include fiber-reinforcing material, thixotropic agents (hydrophilic and hydrophobic pyrogenic silicas), UV stabilizers (nanoscale oxides such as titanium dioxide and zinc oxide), flame retardants (polyphosphates and phosphorus), silicates and carbonates.
- the fiber-reinforcing materials can be used as fabrics, plain and multiaxial fabrics, nonwovens and short fibers.
- the fiber-reinforcing materials are selected from the group of glass fibers, carbon fibers, arabid fibers, PE fibers (Dyneema) and basalt fibers.
- woven fabric and uniaxial and multiaxial covers of glass fibers and carbon fibers are particularly preferred.
- uniaxial and multiaxial layers of glass fibers are particularly preferred.
- the wing shells for wind turbines are preferably designed with fiberglass-laid.
- 25% by weight of 2,6-diamino-1-methylcyclohexane can be used with at least one epoxy resin in the composition according to the invention for differently cured epoxy resins.
- the curing time of the composition can be determined by the choice of a special mixture with a certain ratio of the individual 7 isomers to each other so that just large components are completely filled by the still flowable composition before the incipient hardening makes penetration of the entire component impossible.
- Hardened epoxy resins, molded articles and composite materials can be produced with the composition according to the invention.
- the composition of the invention can also be used as an adhesive.
- Preferred moldings and composites are selected from the group of wind blades for wind power wheels, components for automotive applications such as roofing and body panels, marine and aerospace applications, and tooling.
- composition MDACH (99.9%), isomer ratios, see Table 2.
- composition MDACH (99.9%), isomer ratios, see Table 2.
- composition MDACH (99.9%), isomer ratios, see Table 2.
- the TDA melt was fed at 20-40 g / h.
- the conversion of TDA was 99.3%, the selectivity to MDACH was 97.7%, the low boiler content by deamination (Methylaminocyclohexane) at 1, 5%.
- the discharge was purified by distillation at 10 mbar and 80-85 ° C.
- composition MDACH (99.6%), isomer ratios, see Table 2.
- a continuously operated plant consisting of two tubular reactors connected in series (main reactor 150 ml and postreactor 100 ml) was charged with the Ru / A C ⁇ catalyst prepared according to Example 7.
- the main reactor was operated in trickle mode with circulation, the secondary reactor in the straight passage in
- TDA solution (20% in THF) (1 mL / min) was pumped through the reactor cascade with pure hydrogen at a mean temperature of 144 ° C in the main reactor and 163 ° C in the post reactor and a constant pressure of 200 bar.
- the conversion of TDA was 100%, the selectivity to MDACH was 59.7%, the low boiler content by deamination (Methylaminocyclohexane) at 33.3%.
- the discharge was purified by distillation at 10 mbar and 80-85 ° C.
- composition MDACH (99.9%), isomer ratios, see Table 2.
- the hydrogenation was carried out analogously to Example 6 at 240 bar and an average temperature of 235 ° C (Ru content 100 ppm).
- the conversion of TDA was 99%, the selectivity to MDACH was 82%, the low boiler content by deamination (Methylaminocyclohexane) at 18%.
- the effluent was purified by distillation.
- composition MDACH (99.8%), isomer ratios, see Table 2.
- 0.5 ⁇ of this diluted sample is measured by means of a Hamilton syringe on a gas chromatogram (HP 6890) on an RTX35 amine column from Restek Corporation (stationary phase: 35% by weight of diphenyls, 65% by weight of dimethylpolysiloxanes; : 30 m, inner diameter: 0.25 mm, film thickness: 0.5 ⁇ m) at temperatures in the range of 100 to> 250 ° C (oven: injection temperature: 100 ° C, heating rate: 1 ° C / min to temperature: 120 ° Heating rate: 5 ° C / min to final temperature: 250 ° C, left at 250 ° C for 10 min) and a set speed of 40 ml / min (carrier gas: helium; inlet pressure: 1 bar; split ratio: 1:40 ) given up.
- the flame ionization detector is operated at 280 ° C.
- composition of the pure mixture of the invention (after distillation) from the examples (data in GC area percent):
- Example 3 from EP 0 443 344 B1 was reproduced by the procedure of Example 1 from EP 0 443 344 B1. Since the experiments were carried out in a 3.5 L autoclave instead of a 2 L autoclave, all quantities were multiplied by a factor of 1.75.
- composition of the invention contains an epoxy resin and the mixture in
- the mixture was filled in a 11 chemical glass and about 10 min. Stirred with a Propellertoneer and 300 rev / min. Subsequently, the composition is poured into an aluminum mold with 23 x 35 cm. The aluminum molds are separated from each other by 4 mm thick silicone gaskets and were wiped on a cloth prior to filling with the inventive composition with the release agent PAT 623 / B. After filling the composition according to the invention, the molds are held together with clamps.
- the curing of the resin plates produced takes place for 2 h at 80 ° C and then for 3h at 150 ° C in a heated oven with exhaust air.
- Pot life is the time at RT that the system needs to reach a viscosity of 10,000 mPas. Then the gel point is reached. That's the actual processing time or open time.
- the mixture of isomers also positively influences the glass transition temperature.
- higher reaction temperature in the hydrogenation leads, in addition to longer processing times, simultaneously to a product mixture which results in a higher glass transition temperature.
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Abstract
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Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2012115642/04A RU2559061C2 (ru) | 2009-09-18 | 2010-09-20 | Применение смеси стерреоизомеров диаминометилциклогексана в качестве отвердителя эпоксидных смол |
KR1020127009820A KR101887244B1 (ko) | 2009-09-18 | 2010-09-20 | 에폭시 수지용 경화제로서의 디아미노메틸시클로헥산의 입체이성질체 혼합물의 용도 |
US13/496,993 US8828267B2 (en) | 2009-09-18 | 2010-09-20 | Use of a stereoisomer mixture of diaminomethylcyclohexane as a hardener for epoxy resins |
JP2012529297A JP5705227B2 (ja) | 2009-09-18 | 2010-09-20 | エポキシ樹脂用の硬化剤としてのジアミノメチルシクロヘキサンの立体異性体混合物の使用 |
EP10754523.8A EP2478030B1 (de) | 2009-09-18 | 2010-09-20 | Verwendung eines stereoisomerengemisches von diaminomethylcyclohexan als härter für epoxidharze |
CN201080051348.3A CN102597043B (zh) | 2009-09-18 | 2010-09-20 | 二氨基甲基环己烷的立体异构体混合物作为环氧树脂的硬化剂的用途 |
ZA2012/02747A ZA201202747B (en) | 2009-09-18 | 2012-04-16 | Use of a stereoisomer mixture of diaminomethylcyclohexane as a hardener for epoxy resins |
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PCT/EP2010/063794 WO2011033104A1 (de) | 2009-09-18 | 2010-09-20 | Verwendung eines stereoisomerengemisches von diaminomethylcyclohexan als härter für epoxidharze |
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JP (1) | JP5705227B2 (de) |
KR (1) | KR101887244B1 (de) |
CN (1) | CN102597043B (de) |
RU (1) | RU2559061C2 (de) |
WO (2) | WO2011032877A1 (de) |
ZA (1) | ZA201202747B (de) |
Cited By (7)
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WO2015086639A2 (de) | 2013-12-11 | 2015-06-18 | Basf Se | Verfahren zur hydrierung aromatischer verbindungen |
WO2015158684A1 (de) | 2014-04-17 | 2015-10-22 | Basf Se | Mischung aus cyanoalkyliertem polyamin und beschleuniger als latenter härter für epoxidharze |
WO2019020400A1 (en) | 2017-07-25 | 2019-01-31 | Basf Se | N, N'-DIALKYL METHYLCYCLOHEXANEDIAMINE AS A REACTIVE DILUENT IN EPOXY RESIN SYSTEMS |
US10329238B2 (en) | 2015-12-04 | 2019-06-25 | Basf Se | Isomerization of MDACH |
US10336668B2 (en) | 2014-11-25 | 2019-07-02 | Basf Se | Method for producing cis- and trans-enriched MDACH |
WO2019134824A1 (en) | 2018-01-04 | 2019-07-11 | Basf Se | Curing agents for epoxy resins with low tendency to the formation of carbamates |
EP3882294A1 (de) | 2020-03-18 | 2021-09-22 | Hilti Aktiengesellschaft | Härterzusammensetzung auf basis von diaminomethylcyclohexan und 1,3-cyclo-hexan-bis(methylamin) für eine epoxidharzmasse, epoxidharzmasse und mehrkomponenten-epoxidharzsystem |
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ES2614356T3 (es) * | 2014-02-05 | 2017-05-30 | Covestro Deutschland Ag | Procedimiento de hidrogenación de poliaminas y dipoliaminas aromáticas a poliaminas y dipoliaminas cicloalifáticas |
EP2905273B1 (de) * | 2014-02-05 | 2018-06-06 | Covestro Deutschland AG | Verfahren zur Hydrierung von aromatischen Di- und Polyaminen |
US10792896B2 (en) * | 2014-07-14 | 2020-10-06 | Bell Helicopter Textron Inc. | Method for limiting interlaminar fatigue in composite laminate and a component incorporating the same |
CN107406579B (zh) * | 2015-03-31 | 2020-10-30 | 三菱瓦斯化学株式会社 | 环氧树脂固化剂、环氧树脂组合物、涂料、土木建筑用构件、固化物和复合材料、以及环氧树脂固化剂的制造方法 |
WO2018050554A1 (de) * | 2016-09-19 | 2018-03-22 | Basf Se | Cyanethylierte methylcylohexandiamin- (mcda) und toluoldiamin- (tda) derivate |
CN110035990B (zh) * | 2016-12-05 | 2023-01-10 | 巴斯夫欧洲公司 | N,n′-二氨基丙基-2-甲基环己烷-1,3-二胺和n,n′-二氨基丙基-4-甲基环己烷-1,3-二胺及其作为环氧树脂用固化剂的用途 |
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2010
- 2010-09-09 WO PCT/EP2010/063200 patent/WO2011032877A1/de active Application Filing
- 2010-09-20 RU RU2012115642/04A patent/RU2559061C2/ru not_active IP Right Cessation
- 2010-09-20 WO PCT/EP2010/063794 patent/WO2011033104A1/de active Application Filing
- 2010-09-20 JP JP2012529297A patent/JP5705227B2/ja not_active Expired - Fee Related
- 2010-09-20 CN CN201080051348.3A patent/CN102597043B/zh active Active
- 2010-09-20 US US13/496,993 patent/US8828267B2/en active Active
- 2010-09-20 KR KR1020127009820A patent/KR101887244B1/ko active IP Right Grant
- 2010-09-20 EP EP10754523.8A patent/EP2478030B1/de active Active
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EP0443344A2 (de) * | 1990-02-02 | 1991-08-28 | Air Products And Chemicals, Inc. | Methyl-2,6-cyclohexandiamin enthaltende Epoxydharzzusammensetzungen |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015086639A2 (de) | 2013-12-11 | 2015-06-18 | Basf Se | Verfahren zur hydrierung aromatischer verbindungen |
US10329237B2 (en) | 2013-12-11 | 2019-06-25 | Basf Se | Method for hydrogenating aromatic compounds |
WO2015158684A1 (de) | 2014-04-17 | 2015-10-22 | Basf Se | Mischung aus cyanoalkyliertem polyamin und beschleuniger als latenter härter für epoxidharze |
US10336668B2 (en) | 2014-11-25 | 2019-07-02 | Basf Se | Method for producing cis- and trans-enriched MDACH |
US10329238B2 (en) | 2015-12-04 | 2019-06-25 | Basf Se | Isomerization of MDACH |
WO2019020400A1 (en) | 2017-07-25 | 2019-01-31 | Basf Se | N, N'-DIALKYL METHYLCYCLOHEXANEDIAMINE AS A REACTIVE DILUENT IN EPOXY RESIN SYSTEMS |
WO2019134824A1 (en) | 2018-01-04 | 2019-07-11 | Basf Se | Curing agents for epoxy resins with low tendency to the formation of carbamates |
EP3882294A1 (de) | 2020-03-18 | 2021-09-22 | Hilti Aktiengesellschaft | Härterzusammensetzung auf basis von diaminomethylcyclohexan und 1,3-cyclo-hexan-bis(methylamin) für eine epoxidharzmasse, epoxidharzmasse und mehrkomponenten-epoxidharzsystem |
WO2021185607A1 (de) | 2020-03-18 | 2021-09-23 | Hilti Aktiengesellschaft | Härterzusammensetzung auf basis von diaminomethylcyclohexan und 1,3- cyclo-hexan-bis(methylamin) für eine epoxidharzmasse, epoxidharzmasse und mehrkomponenten-epoxidharzsystem |
Also Published As
Publication number | Publication date |
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CN102597043A (zh) | 2012-07-18 |
JP2013505316A (ja) | 2013-02-14 |
KR20120083420A (ko) | 2012-07-25 |
RU2559061C2 (ru) | 2015-08-10 |
ZA201202747B (en) | 2013-06-26 |
WO2011032877A1 (de) | 2011-03-24 |
KR101887244B1 (ko) | 2018-09-10 |
EP2478030B1 (de) | 2013-07-10 |
US20120226017A1 (en) | 2012-09-06 |
US8828267B2 (en) | 2014-09-09 |
JP5705227B2 (ja) | 2015-04-22 |
CN102597043B (zh) | 2015-02-11 |
RU2012115642A (ru) | 2013-10-27 |
EP2478030A1 (de) | 2012-07-25 |
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