WO2012070457A1 - ナイロン塩粉末の製造方法、およびナイロンの製造方法 - Google Patents
ナイロン塩粉末の製造方法、およびナイロンの製造方法 Download PDFInfo
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- WO2012070457A1 WO2012070457A1 PCT/JP2011/076474 JP2011076474W WO2012070457A1 WO 2012070457 A1 WO2012070457 A1 WO 2012070457A1 JP 2011076474 W JP2011076474 W JP 2011076474W WO 2012070457 A1 WO2012070457 A1 WO 2012070457A1
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- powder
- nylon salt
- dicarboxylic acid
- diamine
- nylon
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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
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/41—Preparation of salts of carboxylic acids
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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
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
- C08G69/28—Preparatory processes
-
- 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
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
- C08G69/28—Preparatory processes
- C08G69/30—Solid state polycondensation
Definitions
- the present invention relates to a method for producing a nylon salt powder suitable for producing nylon having excellent heat resistance. Furthermore, it is related with the manufacturing method of nylon using the nylon salt powder obtained by this manufacturing method.
- nylon having excellent heat resistance using diamine and dicarboxylic acid as raw materials.
- the usual method for producing nylon excellent in heat resistance using diamine and dicarboxylic acid as raw materials is as follows. That is, first, a diamine and a dicarboxylic acid are reacted to produce a nylon salt. Thereafter, the obtained nylon salt is made to have a high molecular weight by solid phase polymerization or melt polymerization. Thus, nylon can be stably made into high molecular weight by obtaining nylon from nylon salt.
- JP2001-348427A discloses a method for obtaining a nylon salt by reacting a diamine and a dicarboxylic acid at high temperature and high pressure in the presence of water, and then ejecting the obtained reaction product at high temperature to separate water. Is disclosed.
- the production method disclosed in JP2001-348427A requires a step of ejecting the reacted diamine and dicarboxylic acid at high temperature and high pressure as described above. Therefore, there is a problem that the manufacturing equipment becomes large, the process becomes complicated, and the cost increases.
- nylon when nylon is produced by solid-phase polymerization of a nylon salt obtained using water, the nylon becomes a gel or a triamine having a branched structure as a by-product is produced. End up. Therefore, there is a problem that the melting point of the obtained nylon is lowered and the heat resistance is poor. From the above, as a method for producing nylon, it is considered ideal to obtain a nylon salt powder and polymerize it under the condition that water is not present.
- JP2001-200053A is a production in which dicarboxylic acid is added to molten diamine to produce a slurry comprising molten diamine and solid dicarboxylic acid, and then the slurry is reacted to form a nylon salt.
- a method is disclosed.
- the nylon salt is agglomerated in the reaction vessel, it is difficult to remove it from the reaction vessel.
- the present situation is that no technology for obtaining a powder of nylon salt by a simple method in the absence of water has been found so far.
- the present invention sets the water content to 5% by mass or less based on the total amount of the dicarboxylic acid powder and the diamine, and maintains the powder state of the dicarboxylic acid powder and the diamine.
- the object is to obtain a powdery nylon salt efficiently by the reaction. Further, it is an object to efficiently obtain nylon having high heat resistance and high molecular weight by polymerizing the nylon salt of this powder.
- the gist of the present invention is as follows.
- (1) When producing a nylon salt powder by reacting a dicarboxylic acid powder, the water content is set to 5% by mass or less based on the total amount of the dicarboxylic acid powder and the diamine, A method for producing a nylon salt powder comprising heating to a temperature not higher than the melting point of dicarboxylic acid and adding diamine to the dicarboxylic acid powder so as to maintain the state of the dicarboxylic acid powder while maintaining this heating temperature. (2) The method for producing a nylon salt powder according to (1), wherein the heating temperature is 100 to 210 ° C.
- the water content is 5% by mass or less based on the total amount of the dicarboxylic acid powder and the diamine, and the dicarboxylic acid powder and the diamine are reacted while maintaining the powder state. Therefore, the powdered nylon salt can be obtained without complicating the process and increasing the cost. Furthermore, according to the nylon production method of the present invention, nylon having a high heat resistance and a high molecular weight can be efficiently obtained by polymerizing the nylon salt of this powder.
- the present invention will be described below.
- the method for producing the nylon salt powder of the present invention uses dicarboxylic acid powder and diamine as raw materials.
- the dicarboxylic acid constituting the dicarboxylic acid powder is not particularly limited, and examples thereof include terephthalic acid, isophthalic acid, adipic acid, sebacic acid, oxalic acid, naphthalenedicarboxylic acid, and cyclohexanedicarboxylic acid.
- terephthalic acid, isophthalic acid, and adipic acid are preferable from the viewpoint of versatility, and the resulting nylon has a high melting point, so that it is easy to maintain the powder state, and in addition, the reaction heat during salt formation can be reduced.
- terephthalic acid and isophthalic acid are more preferable.
- the melting point of the dicarboxylic acid used in the present invention is usually about 120 to 400 ° C.
- the diamine is not particularly limited, and examples thereof include 1,4-butanediamine, 1,6-hexanediamine, 1,9-nonanediamine, 1,10-decanediamine, 1,11-undecanediamine, and 1,12-dodecane.
- examples thereof include diamine, 2-methyl-1,5-pentanediamine, p-phenylenediamine, m-xylylenediamine, and p-xylylenediamine.
- 1,6-hexanediamine, 1,9-nonanediamine, and 1,10-decanediamine are preferable from the viewpoint of versatility.
- the melting point of the diamine used in the present invention is usually about 25 to 200 ° C.
- the nylon salt can be mixed with lactams such as caprolactam, if necessary, as a raw material for copolymer nylon.
- lactams such as caprolactam
- the amount of copolymerization may be in a range that does not impair the effects of the present invention.
- the amount is preferably 1 to 30 mol% with respect to dicarboxylic acid. More preferably, it is 20 mol%.
- Nylon salts obtained by combining the above monomers include nylon 6T, nylon 9T, nylon 10T, nylon 6I, nylon 9T, nylon 10I, nylon 46, nylon 66, nylon 69, nylon 610, MXD6 nylon, PXD6 nylon.
- Nylon salt for obtaining etc. is mentioned.
- T is terephthalic acid
- I is isophthalic acid
- MXD is metaxylylenediamine
- PXD is paraxylylenediamine.
- the method for producing the nylon salt powder of the present invention is a nylon salt for obtaining nylon 46, nylon 6T, nylon 9T, and nylon 10T, which are nylons having a good balance of low water absorption, high heat resistance, and high crystallinity. It can use suitably for manufacture of.
- a diamine is added to a dicarboxylic acid powder heated at a temperature not lower than the melting point of the diamine and not higher than the melting point of the dicarboxylic acid, and the diamine and the dicarboxylic acid powder are maintained while maintaining the state of the dicarboxylic acid powder. It is necessary to react with.
- the dicarboxylic acid powder can be reacted with diamine while maintaining the powder state by heating the dicarboxylic acid powder beforehand. If the dicarboxylic acid powder is not heated in advance, there arises a problem that the nylon salt is agglomerated. In other words, when the dicarboxylic acid powder is heated after adding the diamine, the diamine and the dicarboxylic acid do not react under conditions where the temperature is not sufficiently raised in the initial stage of heating, so that a nylon salt is not formed, and the liquid diamine and dicarboxylic acid are not produced.
- the mixture is in the form of a slurry, a paste, or a clay. When the mixture is further heated from such a state, a massive nylon salt is formed instead of powder.
- the dicarboxylic acid must have a powder form at any stage during the reaction with the diamine. Therefore, it is necessary to use the dicarboxylic acid that is in the form of a lump after pulverizing it beforehand.
- the term “powder” means that the powder has a granular form and the particle size is about 5 ⁇ m to 2 mm.
- the volume average particle diameter of the dicarboxylic acid is preferably 5 ⁇ m to 1 mm, and more preferably 20 to 200 ⁇ m.
- FIG. 1 is a schematic view showing a cross section of a diamine, a dicarboxylic acid powder, and a produced nylon salt during the reaction.
- the diamine 2 is added to the dicarboxylic acid powder 1 heated beforehand (a).
- the reaction starts when the diamine 2 comes into contact with a part of the surface of the dicarboxylic acid powder 1 (b), and the nylon salt 3 is partially formed on the surface of the dicarboxylic acid powder 1 (c).
- the diamine may be added as a solid or may be added after being heated and melted to form a liquid. However, from the viewpoint of reducing the volume average particle size of the obtained nylon salt powder, the diamine is heated and melted to become a liquid. It is preferable to add.
- the diamine When the diamine is added as a solid, the diamine may be prepared in another container different from the reaction container and supplied to the reaction container from another container while adjusting the addition rate of the diamine.
- the apparatus for feeding diamine from another container to the reaction container is preferably an apparatus capable of feeding powder without mixing air in the atmosphere.
- An example of such a device is a powder feeding device provided with a double damper mechanism.
- the diamine when diamine is added as a liquid, the diamine is heated and melted in a container different from the reaction container to form a liquid, and then sent to the reaction container, and the liquid diamine is sprayed onto the dicarboxylic acid powder in a spray form.
- the apparatus for feeding diamine to the reaction vessel is preferably an apparatus capable of feeding without mixing air in the atmosphere.
- the water content needs to be 5% by mass or less based on the total amount of the dicarboxylic acid powder and the diamine as the raw material. It is preferably at most mass%, more preferably at most 0.5 mass%, further preferably at most 0.3 mass%, particularly preferably at most 0.2 mass%, and 0 mass%. % Is most preferred. If water is contained when the raw material is charged, there is a problem that the generated nylon salt is partially melted and fused, or the reaction system becomes high pressure.
- the method for producing the nylon salt powder of the present invention it is necessary to heat the dicarboxylic acid powder as a raw material in advance before adding the diamine.
- the heating temperature when the dicarboxylic acid powder as a raw material is heated in advance before the addition of the diamine must be not less than the melting point of the diamine and not more than the melting point of the dicarboxylic acid constituting the dicarboxylic acid powder. + 10 ° C.) and preferably (dicarboxylic acid melting point ⁇ 5 ° C.) or less.
- the heating temperature is lower than the melting point of the diamine, both the dicarboxylic acid powder and the diamine are in a solid state, and there is a problem that the formation reaction of the nylon salt hardly proceeds.
- the heating temperature exceeds the melting point of the dicarboxylic acid, there is a problem that the entire reaction system becomes liquid and the whole is agglomerated with the formation of the nylon salt.
- the heating temperature of the dicarboxylic acid powder is preferably 100 ° C. or higher and 210 ° C. or lower, and more preferably 120 ° C. or higher and 200 ° C. or lower. If the heating temperature is less than 100 ° C., the formation reaction of the nylon salt may be insufficient. On the other hand, when the heating temperature exceeds 210 ° C., an amide formation reaction occurs during the formation reaction of the nylon salt to generate moisture, and as a result, the resulting nylon salt is reduced due to the generated water. In some cases, partial melting may result in fusion or the reaction system may become high pressure.
- the same temperature may be sufficient as the heating temperature at the time of heating the dicarboxylic acid powder which is a raw material beforehand, and the production
- the reaction time for carrying out the above-mentioned nylon salt formation reaction is preferably 0 to 6 hours after the addition of the diamine is completed. More preferably, it is 25 to 3 hours.
- the method for adding diamine is not particularly limited as long as the dicarboxylic acid can maintain a powder state during the reaction.
- a method of adding diamine continuously, or a diamine is divided into appropriate amounts (for example, added).
- a method of intermittently adding 1/10 to 1/100 of the total amount of diamine) is preferred.
- a method combining the above methods such as a method of adding diamine continuously after adding an appropriate amount of diamine intermittently may be used.
- the addition rate of diamine is preferably 0.07 to 6.7% by mass / min, and preferably 0.1 to 3.4% by mass / min from the viewpoint of stably maintaining the powdered state of the dicarboxylic acid. It is more preferable.
- “mass% / min” is a ratio of the diamine added for 1 minute with respect to the total amount of diamine finally added here.
- the addition time of the diamine is preferably 0.25 to 24 hours, more preferably 0.6 to 10 hours, from the viewpoint of reducing the particle size of the obtained nylon salt powder.
- the method for producing the nylon salt powder of the present invention from the viewpoint of increasing the efficiency of the production reaction of the nylon salt, when supplying the raw material to the reaction vessel, in addition to the dicarboxylic acid powder and the diamine, as long as the effects of the present invention are not impaired. Further, a terminal blocking agent and a polymerization catalyst may be added.
- the end-capping agent seals the end of the terminal functional group of the polymer.
- terminal blocking agents include acetic acid, lauric acid, benzoic acid, octylamine, cyclohexylamine, aniline and the like.
- the amount of the end-capping agent used is preferably 5 mol% or less with respect to the total number of moles of the dicarboxylic acid powder as the raw material monomer and the diamine.
- the polymerization catalyst examples include phosphoric acid, phosphorous acid, hypophosphorous acid, and salts thereof. If the amount of the polymerization catalyst used is too large, the product performance and processability may be reduced, so 2 mol% or less is preferable with respect to the total number of moles of the dicarboxylic acid powder as the raw material monomer and the diamine.
- various additives may be added at any stage within a range not impairing the effects of the present invention.
- the additive include inorganic fillers, fillers, stabilizers and the like.
- the use amount of the additive is preferably 20% by mass or less with respect to the total mass of the dicarboxylic acid powder as the raw material monomer and the diamine from the viewpoint of not preventing the contact between the diamine and the dicarboxylic acid powder.
- the production rate of the nylon salt is preferably 90% or more, and more preferably 95% or more.
- the production rate of the nylon salt is 90% or more, the amount of unreacted diamine that is converted into vapor is reduced, so that there is an advantage that it is easy to obtain high molecular weight nylon.
- the method for calculating the production rate of the nylon salt will be described in detail in Examples.
- the volume average particle size of the obtained nylon salt powder is preferably 2 mm or less, and more preferably 500 ⁇ m or less.
- the stirring mechanism provided in the reaction apparatus for reacting the dicarboxylic acid powder and the diamine may be appropriately selected according to the type and production amount of the nylon salt to be produced, such as a paddle type, tumbler type, ribbon type blender, A mixer etc. are mentioned. A combination of these may also be used.
- the reaction apparatus for reacting the dicarboxylic acid powder and the diamine is not particularly limited as long as the dicarboxylic acid powder and the diamine can be sufficiently stirred, and a known reaction apparatus can be used.
- the method of heating the dicarboxylic acid powder before the reaction or heating the reaction system during the production reaction is not particularly limited, and heating is performed using a heating medium such as steam, a heater, or the like. The method of doing is mentioned.
- the reaction between the dicarboxylic acid powder and the diamine may be performed in air or in an inert gas atmosphere such as nitrogen.
- an inert gas atmosphere such as nitrogen.
- the reaction can be performed in a sealed state or under an inert gas flow.
- the resulting nylon salt does not agglomerate, This can be a powder.
- the nylon salt By making the nylon salt into powder, even if moisture is generated when the nylon salt is polymerized to obtain nylon, moisture inside the nylon salt is easily removed, so that the speed of the amidation reaction can be increased. it can.
- generation of triamine which is a by-product of the branched structure, can be suppressed. Therefore, it can be suitably used also when producing a nylon salt that is difficult to be polymerized by melt polymerization due to raw materials and additives.
- the method for producing the nylon salt powder of the present invention does not substantially use water, there is no need to provide a step of distilling off water. Therefore, a process can be reduced compared with the manufacturing method which adds water.
- Nylon can be obtained by polymerizing the nylon salt powder obtained by the above-described method for producing a nylon salt powder.
- the method for producing the nylon of the present invention is not particularly limited as long as the nylon salt powder obtained by the above-described method for producing a nylon salt powder is used, and methods such as solid phase polymerization and melt polymerization may be used. it can.
- the polymerization conditions are not particularly limited, but the reaction temperature is preferably 180 ° C. or higher and lower than the melting point of nylon, more preferably 200 ° C. or higher and below the melting point of nylon. .
- the reaction time can be 0.5 to 100 hours after reaching the reaction temperature, and more preferably 0.5 to 24 hours.
- the solid phase polymerization may be performed in an inert gas stream such as nitrogen, or may be performed under reduced pressure. Moreover, you may carry out still and may carry out stirring.
- nylon salt and nylon were measured by the following method.
- (1) Powder state of reaction product When half of the total amount of diamine was added, the stirring blade was stopped and the valve (50 mm diameter) at the bottom of the reaction apparatus was opened. It was visually confirmed whether or not the reactant was dispensed just by opening the valve. When the reactant was dispensed, a small amount of the reactant was quickly collected and the powder state was visually evaluated.
- Nylon salt formation rate Unreacted diamine when heated from 10 ° C. to 120 ° C. at a temperature rising rate of 20 ° C./min using a differential scanning calorimeter (“DSC-7”, manufactured by Perkin Elmer) ⁇ H (J / g) of the heat of fusion of the component and heat of fusion ⁇ H ′ (J / g) when only the diamine was measured were calculated.
- Relative viscosity of nylon 35 kg of nylon salt was subjected to solid phase polymerization in a 50 L reaction vessel at 230 ° C. for 5 hours under a nitrogen flow of 4 L / min to obtain nylon.
- TPA terephthalic acid, melting point 300 ° C. or higher, volume average particle size 80 ⁇ m ADA: adipic acid, melting point 152 ° C., volume average particle size 170 ⁇ m DA: 1,10-decanediamine, melting point 62 ° C HA: 1,6-hexanediamine, melting point 42 ° C.
- BA 1,4-butanediamine, melting point 27 ° C.
- PA p-phenylenediamine, melting point 139 ° C NA: 1,9-nonanediamine, melting point 36 ° C.
- SHP Sodium hypophosphite
- BA Benzoic acid
- Example 1 A mixture of 4.82 kg (29.0 mol) of TPA powder, 9.8 g (0.093 mol) of SHP as a polymerization catalyst, and 77.9 g (0.64 mol) of BA as an end-blocking agent was reacted in a ribbon blender type. The mixture was supplied to the apparatus and heated to 180 ° C. with stirring at a rotation speed of 30 rpm under nitrogen sealing. Then, TPA powder kept at 180 ° C continuously over 3 hours using 5.10 kg (29.6 mol) of DA heated to 100 ° C at a rate of 0.56% by mass / min. To obtain a nylon salt powder. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 2 1177 g (7.08 mol) of TPA powder was supplied to a reactor equipped with a paddle-type stirring blade, and heated to 145 ° C. while stirring at 60 rpm under nitrogen sealing. Thereafter, 824 g (7.08 mol) of HA was divided into 36 times by 22.9 g (2.8% by mass) once every 5 minutes (that is, HA was intermittently divided into 1/36 of the total amount). In addition, it was added to the TPA powder maintained at 145 ° C. while maintaining a nitrogen sealed state by a powder feeding apparatus equipped with a double damper mechanism. Stirring was further continued at 145 ° C. for 1 hour to obtain a nylon salt powder. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 3 6.32 kg (43.2 mol) of ADA powder was supplied to a ribbon blender type reactor, and heated to 125 ° C. with stirring at a rotation speed of 30 rpm under nitrogen sealing. Then, while spraying BD3.68 kg (43.2 mol) heated to 60 ° C. using a spraying device in a spray form, continuously at a rate of 0.83% by mass / min over 2 hours, It was added to ADA powder kept at 125 ° C. Stirring was further continued at 125 ° C. for 1 hour to obtain a nylon salt powder. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 4 As shown in Table 1, the same operation as in Example 1 was performed except that BD was continuously added to the ADA powder at a rate of 0.56% by mass / min over 3 hours, and the nylon salt powder was obtained. Obtained. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 5 981.7 g (5.91 mol) of TPA powder was supplied to a reactor equipped with a paddle type stirring blade and heated to 95 ° C. under a nitrogen stream while stirring at a rotation speed of 60 rpm. Thereafter, 1018.3 g (5.91 mol) of DA was divided into 36 times, 28.286 g (2.8 mass% per time), once every 5 minutes, and then fed by a powder feeder equipped with a double damper mechanism. It was added to the TPA powder maintained at 95 ° C. while maintaining the nitrogen sealed state. Stirring was further continued at 95 ° C. for 1 hour to obtain a nylon salt powder. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 6 A nylon salt powder was obtained by performing the same operation as in Example 5 except that the heating temperature and reaction temperature of the TPA powder were changed to 215 ° C. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 7 A mixture of 4.82 kg (29.0 mol) of TPA powder, 9.8 g (0.093 mol) of SHP as a polymerization catalyst, and 77.9 g (0.64 mol) of BA as an end-blocking agent was reacted in a ribbon blender type. The mixture was supplied to the apparatus and heated to 180 ° C. with stirring at a rotation speed of 30 rpm under nitrogen sealing. Thereafter, using a spray device, DA 5.10 kg (29.6 mol) heated to 100 ° C. was added to the above mixture continuously maintained at 180 ° C. over 3 hours at a rate of 0.56% by mass / min. Nylon salt powder was obtained by spraying. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 8 1094.3 g (7.49 mol) of ADA powder was supplied to a reactor equipped with a paddle type stirring blade and heated to 125 ° C. under a nitrogen stream while stirring at a rotation speed of 60 rpm. Thereafter, 905.7 g (7.79 mol) of HA was divided into 36 times, 25.158 g (2.8 mass% per time) once every 5 minutes, by a powder feeder equipped with a double damper mechanism. It was added to the ADA powder kept at 125 ° C. while maintaining the nitrogen sealed state. Stirring was further continued at 125 ° C. for 1 hour to obtain a nylon salt powder. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 9 1211.4 g (7.29 mol) of TPA powder was supplied to a reactor equipped with a paddle type stirring blade and heated to 175 ° C. under a nitrogen stream while stirring at a rotation speed of 60 rpm. Thereafter, 788.6 g (7.29 mol) of PA was divided into 36 times, 21.905 g (2.8% by mass per time) once every 10 minutes, and the powder was fed with a double damper mechanism. It was added to the TPA powder kept at 175 ° C. while maintaining the nitrogen sealed state. Stirring was further continued at 175 ° C. for 1 hour to obtain a nylon salt powder. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder. The polymer was confirmed to be p-aramid by IR measurement using an infrared spectrophotometer (“SYSTEM 2000 type” manufactured by Perkin Elmer).
- SYSTEM 2000 type manufactured by Perkin Elmer
- Example 10 981.7 g (5.91 mol) of TPA powder was supplied to a reactor equipped with a paddle type stirring blade and heated to 180 ° C. under a nitrogen stream while stirring at a rotation speed of 60 rpm. Thereafter, 1018.3 g (5.91 mol) of DA was divided into 10 times, once every 3 minutes, 101.83 g (10.0 mass% per time), and a powder feeder equipped with a double damper mechanism. It added to the TPA powder kept at 180 ° C. while maintaining the nitrogen sealed state. Stirring was further continued at 180 ° C. for 1 hour to obtain a nylon salt powder. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 11 981.7 g (5.91 mol) of TPA powder was supplied to a reactor equipped with a paddle type stirring blade and heated to 180 ° C. under a nitrogen stream while stirring at a rotation speed of 60 rpm. Thereafter, 1018.3 g (5.91 mol) of DA was divided into 36 times, once every 20 minutes, 28.286 g (2.8% by mass per time), and fed with a powder feeder equipped with a double damper mechanism. It added to the TPA powder kept at 180 ° C. while maintaining the nitrogen sealed state. Stirring was further continued at 180 ° C. for 1 hour to obtain a nylon salt powder. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 12 862.0 g (5.19 mol) of TPA powder was supplied to a reactor equipped with a paddle type stirring blade and heated to 180 ° C. in a nitrogen stream while stirring at a rotation speed of 60 rpm. Thereafter, DA1138.0 g (6.60 mol) was divided into 36 times, once every 5 minutes, 31.627 g (2.8 mass% per time), and a powder feeder equipped with a double damper mechanism. It added to the TPA powder kept at 180 ° C. while maintaining the nitrogen sealed state. Stirring was further continued at 180 ° C. for 1 hour to obtain a nylon salt powder. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 13 1102.0 g (6.63 mol) of TPA powder was supplied to a reactor equipped with a paddle type stirring blade and heated to 180 ° C. under a nitrogen stream while stirring at a rotation speed of 60 rpm. Thereafter, 898.0 g (5.21 mol) of DA was divided into 36 times, 24.944 g (2.8 mass% per time) once every 5 minutes, by a powder feeder equipped with a double damper mechanism. It added to the TPA powder kept at 180 ° C. while maintaining the nitrogen sealed state. Stirring was further continued at 180 ° C. for 1 hour to obtain a nylon salt powder. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 14 1094.3 g (7.49 mol) of ADA powder and 40 g of water (2% by mass with respect to the total amount of dicarboxylic acid powder and diamine) were supplied to a reactor equipped with a paddle type stirring blade at a rotation speed of 60 rpm. While stirring, the mixture was heated to 125 ° C. under a nitrogen stream. Thereafter, 905.7 g (7.79 mol) of HA was divided into 36 times, 25.158 g (2.8% by mass per time) once every 5 minutes, by a powder feeder equipped with a double damper mechanism. It was added to the ADA powder kept at 125 ° C. while maintaining the nitrogen sealed state. Stirring was further continued at 125 ° C. for 1 hour to obtain a nylon salt powder. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 15 1094.3 g (7.49 mol) of ADA powder and 100 g of water (5% by mass with respect to the total amount of dicarboxylic acid powder and diamine) were supplied to a reactor equipped with a paddle type stirring blade at a rotational speed of 60 rpm. While stirring, the mixture was heated to 125 ° C. under a nitrogen stream. Thereafter, 905.7 g (7.79 mol) of HA was divided into 36 times, 25.158 g (2.8% by mass per time) once every 5 minutes, by a powder feeder equipped with a double damper mechanism. It was added to the ADA powder kept at 125 ° C. while maintaining the nitrogen sealed state. Stirring was further continued at 125 ° C. for 1 hour to obtain a nylon salt powder. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 16 Ribbon blender-type reaction was performed with a mixture of 5.03 kg (30.2 mol) of TPA powder, 10.3 g (0.097 mol) of SHP as a polymerization catalyst, and 81.3 g (0.67 mol) of BA as a terminal blocking agent.
- the mixture was supplied to the apparatus and heated to 170 ° C. with stirring at a rotation speed of 30 rpm under nitrogen sealing. Thereafter, 4.88 kg (30.9 mol) of NA heated to 80 ° C. was continuously maintained at 170 ° C. over 3 hours at a rate of 0.56% by mass / min using a liquid feeding device. Addition to the mixture gave a nylon salt powder.
- Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 17 Nylon in the same manner as in Example 1 except that 19.84 g of water (0.2% by mass with respect to the total amount of the dicarboxylic acid powder and the diamine) was supplied to the reactor in addition to the dicarboxylic acid powder and the diamine. A salt powder was obtained. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 18 Nylon in the same manner as in Example 1 except that 29.76 g of water (0.3% by mass relative to the total amount of dicarboxylic acid powder and diamine) was supplied to the reactor in addition to dicarboxylic acid powder and diamine. A salt powder was obtained. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 19 Nylon in the same manner as in Example 1 except that 49.6 g of water (0.5% by mass with respect to the total amount of dicarboxylic acid powder and diamine) was supplied to the reactor in addition to dicarboxylic acid powder and diamine. A salt powder was obtained. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 20 Nylon in the same manner as in Example 1 except that 99.2 g of water (1.0% by mass with respect to the total amount of dicarboxylic acid powder and diamine) was supplied to the reactor in addition to dicarboxylic acid powder and diamine. A salt powder was obtained. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 21 A mixture consisting of 4.82 kg (29.0 mol) of TPA powder and 77.9 g (0.64 mol) of BA as an end-blocking agent is fed to a ribbon blender type reactor and stirred at 30 rpm under nitrogen sealing. While heating to 180 ° C. Thereafter, 5.10 kg (29.6 mol) of DA heated to 100 ° C. was continuously added at a rate of 0.56% by mass / min using a liquid feeding device for 3 hours and maintained at 180 ° C. Nylon salt powder was obtained by adding to the powder. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Example 22 A nylon salt powder was obtained in the same manner as in Example 21 except that a mixture consisting of 4.82 kg (29.0 mol) of TPA powder and 9.8 g (0.093 mol) of SHP as a catalyst was supplied to the reactor. It was. Table 1 shows raw materials, reaction conditions, and evaluation results of the obtained nylon salt powder.
- Comparative Example 1 1177 g (7.08 mol) of TPA powder was supplied to a reactor equipped with a paddle type stirring blade, and heated to 145 ° C. under nitrogen sealing while stirring at a rotation speed of 60 rpm. Thereafter, HA823 g (7.08 mol) was added all at once to the TPA powder kept at 145 ° C. Further, stirring was continued at 145 ° C. for 4 hours. The TPA during the reaction was agglomerated in the reactor. Table 2 shows the raw materials of nylon salt, reaction conditions, and evaluation results of nylon salt.
- Comparative Example 2 A nylon salt was obtained in the same manner as in Example 4 except that the heating temperature of the ADA powder and the reaction temperature were 165 ° C. The obtained nylon salt was agglomerated in the reactor. Table 2 shows the raw materials of nylon salt, reaction conditions, and evaluation results of nylon salt.
- Comparative Example 3 A nylon salt was obtained in the same manner as in Example 4 except that the ADA powder was not heated in advance.
- the obtained nylon salt was a mixture of lump and powder.
- Table 2 shows the raw materials, reaction conditions, and evaluation results of the obtained nylon salt.
- Comparative Example 4 1094.3 g (7.49 mol) of ADA powder and 140 g of water (7% by mass with respect to the total amount of dicarboxylic acid powder and diamine) were supplied to a reactor equipped with a paddle type stirring blade at a rotational speed of 60 rpm. While stirring, the mixture was heated to 125 ° C. under a nitrogen stream. Thereafter, maintaining the temperature at 125 ° C., 905.7 g (7.79 mol) of HA was added to the TPA powder by dividing into 36 times, 25.158 g (2.8 mass% per time) once every 5 minutes. did. Stirring was further continued at 125 ° C. for 1 hour to obtain a nylon salt. Table 2 shows the raw materials, reaction conditions, and evaluation results of the obtained nylon salt.
- the obtained nylon salt was in a powder form and suitable for solid phase polymerization. It was. Moreover, the production rate of the nylon salt was high, and the polymerizability of the nylon obtained in addition was also good.
- Example 6 since the production reaction temperature of the nylon salt was higher than the preferred range of the present invention, the particle size of the produced nylon salt powder was slightly larger. Further, the production rate of nylon salt was somewhat low. This is presumed to be a result due to partial dissolution of the obtained nylon salt in water generated by the progress of the amidation reaction.
- Example 10 since the addition time of diamine was shorter than the more preferable range of the present invention, the particle size of the produced nylon salt powder was slightly larger.
- Example 14 water was added to the reaction system when the raw materials were charged into the reaction vessel, but the water content was 5% by mass relative to the total amount of the dicarboxylic acid powder and the diamine.
- the resulting nylon salt was powdery and suitable for solid phase polymerization.
- the production rate of nylon salt was high, and in addition, the polymerizability of nylon was good.
- Examples 21 and 22 are the same as those in Example 1 except that the polymerization catalyst and the end-capping agent were omitted.
- the relative viscosity of nylon was slightly lower than that in Example 1, and in Example 22, the relative viscosity of nylon was slightly higher than that in Example 1.
- Comparative Example 4 the amount of water in the system when charging the raw material into the reaction vessel was 7% by mass, which was more than the range specified in the present application. And powder were mixed.
- the water content is 5% by mass or less based on the total amount of the dicarboxylic acid powder and the diamine, and the dicarboxylic acid powder and the diamine are reacted while maintaining the powder state. Therefore, the powdered nylon salt can be obtained without complicating the process and increasing the cost. Furthermore, the nylon production method of the present invention is very useful because it is possible to efficiently obtain nylon having high heat resistance and high molecular weight by polymerizing the nylon salt of this powder.
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Abstract
Description
(1)ジカルボン酸粉末を反応させてナイロン塩粉末を製造するに際し、水の含有量をジカルボン酸粉末とジアミンの合計量に対して5質量%以下とし、ジカルボン酸粉末を予めジアミンの融点以上かつジカルボン酸の融点以下の温度に加熱し、この加熱温度を維持しながら、ジカルボン酸の粉末の状態を保つようにジアミンをジカルボン酸粉末に添加することを特徴とするナイロン塩粉末の製造方法。
(2)加熱温度を100~210℃とすることを特徴とする(1)のナイロン塩粉末の製造方法。
(3)融点以上に加熱したジアミンを、ジカルボン酸粉末にスプレー状に噴霧して添加することを特徴とする(1)または(2)のナイロン塩粉末の製造方法。
(4)ジカルボン酸粉末を構成するジカルボン酸が、テレフタル酸および/またはイソフタル酸であることを特徴とする(1)~(3)のいずれかのナイロン塩粉末の製造方法。
(5)ジアミンの添加速度が、最終的に添加されるジアミン全量に対して、0.07~6.7質量%/分であることを特徴とする(1)~(4)のいずれかのナイロン塩粉末の製造方法。
(6)(1)~(5)いずれかの製造方法で製造されたナイロン塩粉末を重合することを特徴とするナイロンの製造方法。
本発明のナイロン塩粉末の製造方法は、ジカルボン酸粉末およびジアミンを原料として用いる。
図1は反応時のジアミン、ジカルボン酸粉末、および生成するナイロン塩の断面を示す概略図である。まず、予め加熱されたジカルボン酸粉末1に、ジアミン2が添加される(a)。そして、ジカルボン酸粉末1の表面の一部に、ジアミン2が接触することで反応が開始され(b)、ジカルボン酸粉末1の表面に、部分的にナイロン塩3が生成する(c)。さらにジアミン2が添加されると、ジカルボン酸粉末1の表面におけるジアミンの付着面積が拡大し、ジカルボン酸粉末1とジアミン2との反応が引き続き起こる。そして、ジカルボン酸粉末1の表面におけるナイロン塩3の部分が拡大していく(d、e)。ジカルボン酸粉末とジアミンとの反応が完全に終了すると、その全体がナイロン塩となった粉末が得られる(f)。
上述のナイロン塩粉末の製造方法により得られたナイロン塩粉末を重合させることにより、ナイロンを得ることができる。
(1)反応物の粉末状態
全量の半分のジアミンを添加した時点で、攪拌翼を停止し、反応装置下部のバルブ(50mm径)を開放した。バルブを開放しただけで、反応物が払い出されるかどうかを目視で確認した。そして、反応物が払い出された場合は、少量の反応物を素早く採取し、目視で粉末状態を評価した。
良い:バルブを開放しただけで、反応装置から反応物が払い出された。得られた反応物はすべて粉末状であった。
普通:バルブを開放しただけで、反応装置から反応物が払い出された。しかし、得られた反応物は、粉末状物と塊状物が混在していた。
悪い:バルブを開放しただけでは、反応装置から反応物が払い出されなかった。
反応終了後、反応装置下部のバルブ(50mm径)を開放した。バルブを開放しただけで、ナイロン塩が払い出されるかどうかを目視で確認した。そして、ナイロン塩が払い出された場合は、得られたナイロン塩の粉末状態を目視で評価した。評価基準は、(1)と同様とした。
本発明においては、(1)と(2)の評価が、いずれも「良い」または「普通」の評価であれば、内容物が粉末状態を保って反応していたとした。
示差走査型熱量計(パーキンエルマー社製、「DSC-7」)を用い、昇温速度20℃/分で10℃から120℃まで昇温した際の未反応ジアミン成分の融解熱のΔH(J/g)と、ジアミンのみを測定した際の融解熱ΔH’(J/g)を算出した。以下の式により、ナイロン塩の生成率を求めた。
生成率(%)=100-(ΔH/ΔH’)×100
レーザー回折/散乱式粒度分布測定装置(堀場製作所社製、「LA920」)を用いて測定した。
ナイロン塩35kgを、50Lの反応容器で、4L/分の窒素気流下、230℃で5時間かけて固相重合し、ナイロンを得た。ナイロンを96%硫酸に溶解し、濃度1g/dlの試料溶液を作製した。続いて、ウベローデ型粘度計を用い、25℃の温度で試料溶液および溶媒の落下時間を測定し、以下の式を用いて相対粘度を求めた。
相対粘度=(試料溶液の落下時間)/(溶媒のみの落下時間)
実用上、2.0以上が好ましい。
・TPA:テレフタル酸、融点300℃以上、体積平均粒径80μm
・ADA:アジピン酸、融点152℃、体積平均粒径170μm
・DA:1,10-デカンジアミン、融点62℃
・HA:1,6-ヘキサンジアミン、融点42℃
・BA:1,4-ブタンジアミン、融点27℃
・PA:p-フェニレンジアミン、融点139℃
・NA:1,9-ノナンジアミン、融点36℃
・SHP:次亜リン酸ナトリウム
・BA:安息香酸
TPA粉末4.82kg(29.0モル)、重合触媒としてのSHP9.8g(0.093モル)、末端封鎖剤としてのBA77.9g(0.64モル)からなる混合物を、リボンブレンダー式の反応装置に供給し、窒素密閉下、回転数30rpmで撹拌しながら180℃に加熱した。その後、100℃に加熱したDA5.10kg(29.6モル)を、0.56質量%/分の速度で、送液装置を用いて、3時間かけて連続的に180℃を保ったTPA粉末に添加し、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
TPA粉末1177g(7.08モル)を、パドル型の撹拌翼を備えた反応装置に供給し、窒素密閉下、回転数60rpmで撹拌しながら145℃に加熱した。その後、HA824g(7.08モル)を、5分に1回、22.9g(1回あたり2.8質量%)ずつ、36回に分割し(すなわち、HAを全量の1/36ずつ間欠的に)、ダブルダンパー機構を備えた送粉装置により窒素密閉状態を維持しつつ、145℃を保ったTPA粉末に添加した。さらに1時間、145℃で撹拌を続け、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
ADA粉末6.32kg(43.2モル)を、リボンブレンダー式の反応装置に供給し、窒素密閉下、回転数30rpmで撹拌しながら125℃に加熱した。その後、噴霧装置を用いて60℃に加温したBD3.68kg(43.2モル)を、スプレー状に噴霧しながら、0.83質量%/分の速度で、2時間かけて連続的に、125℃を保ったADA粉末に添加した。さらに1時間、125℃で攪拌を続け、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
表1に示すように、BDを0.56質量%/分の速度で、3時間かけて連続的にADA粉末に添加した以外は、実施例1と同様な操作をおこなって、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
TPA粉末981.7g(5.91モル)を、パドル型の撹拌翼を備えた反応装置に供給し、回転数60rpmで撹拌しながら、窒素気流下、95℃に加熱した。その後、DA1018.3g(5.91モル)を、5分に1回、28.286g(1回あたり2.8質量%)ずつ、36回に分割し、ダブルダンパー機構を備えた送粉装置により窒素密閉状態を維持しつつ、95℃に保ったTPA粉末に添加した。さらに1時間、95℃で撹拌を続け、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
TPA粉末の加熱温度と反応温度を215℃に変更した以外は、実施例5と同様な操作をおこなって、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
TPA粉末4.82kg(29.0モル)、重合触媒としてのSHP9.8g(0.093モル)、末端封鎖剤としてのBA77.9g(0.64モル)からなる混合物を、リボンブレンダー式の反応装置に供給し、窒素密閉下、回転数30rpmで撹拌しながら180℃に加熱した。その後、噴霧装置を用い、100℃に加温したDA5.10kg(29.6モル)を、0.56質量%/分の速度で、3時間かけて連続的に180℃に保った前記混合物にスプレー状に噴霧し、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
ADA粉末1094.3g(7.49モル)を、パドル型の撹拌翼を備えた反応装置に供給し、回転数60rpmで撹拌しながら、窒素気流下、125℃に加熱した。その後、HA905.7g(7.79モル)を、5分に1回、25.158g(1回あたり2.8質量%)ずつ、36回に分割し、ダブルダンパー機構を備えた送粉装置により窒素密閉状態を維持しつつ、125℃に保ったADA粉末に添加した。さらに1時間、125℃で撹拌を続け、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
TPA粉末1211.4g(7.29モル)を、パドル型の撹拌翼を備えた反応装置に供給し、回転数60rpmで撹拌しながら、窒素気流下、175℃に加熱した。その後、PA788.6g(7.29モル)を、10分に1回、21.905g(1回当たり2.8質量%)ずつ、36回に分割し、ダブルダンパー機構を備えた送粉装置により窒素密閉状態を維持しつつ、175℃に保ったTPA粉末に添加した。さらに1時間、175℃で撹拌を続け、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。なお、赤外分光光度計(パーキンエルマー社製 「SYSTEM2000型」)を用いたIR測定により、重合物が、p-アラミドであることを確認した。
TPA粉末981.7g(5.91モル)を、パドル型の撹拌翼を備えた反応装置に供給し、回転数60rpmで撹拌しながら、窒素気流下、180℃に加熱した。その後、DA1018.3g(5.91モル)を、3分に1回、101.83g(1回当たり10.0質量%)ずつ、10回に分割し、ダブルダンパー機構を備えた送粉装置により窒素密閉状態を維持しつつ、180℃に保ったTPA粉末に添加した。さらに1時間、180℃で撹拌を続け、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
TPA粉末981.7g(5.91モル)を、パドル型の撹拌翼を備えた反応装置に供給し、回転数60rpmで撹拌しながら、窒素気流下、180℃に加熱した。その後、DA1018.3g(5.91モル)を、20分に1回、28.286g(1回当たり2.8質量%)ずつ、36回に分割し、ダブルダンパー機構を備えた送粉装置により窒素密閉状態を維持しつつ、180℃に保ったTPA粉末に添加した。さらに1時間、180℃で撹拌を続け、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
TPA粉末862.0g(5.19モル)を、パドル型の撹拌翼を備えた反応装置に供給し、回転数60rpmで撹拌しながら、窒素気流下、180℃に加熱した。その後、DA1138.0g(6.60モル)を、5分に1回、31.627g(1回当たり2.8質量%)ずつ、36回に分割し、ダブルダンパー機構を備えた送粉装置により窒素密閉状態を維持しつつ、180℃に保ったTPA粉末に添加した。さらに1時間、180℃で撹拌を続け、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
TPA粉末1102.0g(6.63モル)を、パドル型の撹拌翼を備えた反応装置に供給し、回転数60rpmで撹拌しながら、窒素気流下、180℃に加熱した。その後、DA898.0g(5.21モル)を、5分に1回、24.944g(1回当たり2.8質量%)ずつ、36回に分割し、ダブルダンパー機構を備えた送粉装置により窒素密閉状態を維持しつつ、180℃に保ったTPA粉末に添加した。さらに1時間、180℃で撹拌を続け、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
ADA粉末1094.3g(7.49モル)、水40g(ジカルボン酸粉末とジアミンの合計量に対して2質量%)を、パドル型の撹拌翼を備えた反応装置に供給し、回転数60rpmで撹拌しながら、窒素気流下、125℃に加熱した。その後、HA905.7g(7.79モル)を、5分に1回、25.158g(1回当たり2.8質量%)ずつ、36回に分割し、ダブルダンパー機構を備えた送粉装置により窒素密閉状態を維持しつつ、125℃に保ったADA粉末に添加した。さらに1時間、125℃で撹拌を続け、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
ADA粉末1094.3g(7.49モル)、水100g(ジカルボン酸粉末とジアミンの合計量に対して5質量%)を、パドル型の撹拌翼を備えた反応装置に供給し、回転数60rpmで撹拌しながら、窒素気流下、125℃に加熱した。その後、HA905.7g(7.79モル)を、5分に1回、25.158g(1回当たり2.8質量%)ずつ、36回に分割し、ダブルダンパー機構を備えた送粉装置により窒素密閉状態を維持しつつ、125℃に保ったADA粉末に添加した。さらに1時間、125℃で撹拌を続け、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
TPA粉末5.03kg(30.2モル)、重合触媒としてのSHP10.3g(0.097モル)、末端封鎖剤としてのBA81.3g(0.67モル)からなる混合物を、リボンブレンダー式の反応装置に供給し、窒素密閉下、回転数30rpmで撹拌しながら170℃に加熱した。その後、80℃に加温したNA4.88kg(30.9モル)を、送液装置を用いて、0.56質量%/分の速度で、3時間かけて連続的に、170℃に保った前記混合物に添加し、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
反応装置に、ジカルボン酸粉末およびジアミンに加えて、水19.84g(ジカルボン酸粉末とジアミンの合計量に対して0.2質量%)を供給した以外は、実施例1と同様にして、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
反応装置に、ジカルボン酸粉末およびジアミンに加えて、水29.76g(ジカルボン酸粉末とジアミンの合計量に対して0.3質量%)を供給した以外は、実施例1と同様にして、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
反応装置に、ジカルボン酸粉末およびジアミンに加えて、水49.6g(ジカルボン酸粉末とジアミンの合計量に対して0.5質量%)を供給した以外は、実施例1と同様にして、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
反応装置に、ジカルボン酸粉末およびジアミンに加えて、水99.2g(ジカルボン酸粉末とジアミンの合計量に対して1.0質量%)を供給した以外は、実施例1と同様にして、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
TPA粉末4.82kg(29.0モル)、末端封鎖剤としてのBA77.9g(0.64モル)からなる混合物を、リボンブレンダー式の反応装置に供給し、窒素密閉下、回転数30rpmで撹拌しながら180℃に加熱した。その後、100℃に加熱したDA5.10kg(29.6モル)を、送液装置を用いて、0.56質量%/分の速度で、3時間かけて連続的に、180℃を保ったTPA粉末に添加し、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
反応装置に、TPA粉末4.82kg(29.0モル)、触媒としてのSHP9.8g(0.093モル)からなる混合物を供給した以外は、実施例21と同様にして、ナイロン塩粉末を得た。得られたナイロン塩粉末の原料、反応条件、評価結果を表1に示す。
TPA粉末1177g(7.08モル)を、パドル型の撹拌翼を備えた反応装置に供給し、回転数60rpmで撹拌しながら、窒素密閉下、145℃に加熱した。その後、HA823g(7.08モル)を一括して、145℃に保ったTPA粉末に添加した。さらに、4時間、145℃で攪拌を続けた。反応中のTPAは反応装置中で塊状となった。ナイロン塩の原料、反応条件、ナイロン塩の評価結果を表2に示す。
ADA粉末の加熱温度、および反応温度を165℃とした以外は、実施例4と同様な操作をおこなって、ナイロン塩を得た。得られたナイロン塩は反応装置中で塊状となった。ナイロン塩の原料、反応条件、ナイロン塩の評価結果を表2に示す。
ADA粉末をあらかじめ加熱しないこと以外は、実施例4と同様な操作をおこなって、ナイロン塩を得た。得られたナイロン塩は塊状物と粉末が混在したものとなった。得られたナイロン塩の原料、反応条件、評価結果を表2に示す。
ADA粉末1094.3g(7.49モル)、水140g(ジカルボン酸粉末とジアミンの合計量に対して7質量%)を、パドル型の撹拌翼を備えた反応装置に供給し、回転数60rpmで撹拌しながら、窒素気流下、125℃に加熱した。その後、125℃を保って、HA905.7g(7.79モル)を、5分に1回、25.158g(1回当たり2.8質量%)ずつ、36回に分割してTPA粉末に添加した。さらに1時間、125℃で撹拌を続け、ナイロン塩を得た。得られたナイロン塩の原料、反応条件、評価結果を表2に示す。
Claims (6)
- ジカルボン酸粉末を反応させてナイロン塩粉末を製造するに際し、水の含有量をジカルボン酸粉末とジアミンの合計量に対して5質量%以下とし、ジカルボン酸粉末を予めジアミンの融点以上かつジカルボン酸の融点以下の温度に加熱し、この加熱温度を維持しながら、ジカルボン酸の粉末の状態を保つようにジアミンをジカルボン酸粉末に添加することを特徴とするナイロン塩粉末の製造方法。
- 加熱温度を100~210℃とすることを特徴とする請求項1に記載のナイロン塩粉末の製造方法。
- 融点以上に加熱したジアミンを、ジカルボン酸粉末にスプレー状に噴霧して添加することを特徴とする請求項1または請求項2記載のナイロン塩粉末の製造方法。
- ジカルボン酸粉末を構成するジカルボン酸が、テレフタル酸および/またはイソフタル酸であることを特徴とする請求項1~3のいずれかに記載のナイロン塩粉末の製造方法。
- ジアミンの添加速度が、最終的に添加されるジアミン全量に対して、0.07~6.7質量%/分であることを特徴とする請求項1~4のいずれかに記載のナイロン塩粉末の製造方法。
- 請求項1~5のいずれかの製造方法で製造されたナイロン塩粉末を重合することを特徴とするナイロンの製造方法。
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EP11843585.8A EP2644638B1 (en) | 2010-11-26 | 2011-11-17 | Method for producing nylon salt powder, and method for producing nylon |
KR1020137008631A KR101604324B1 (ko) | 2010-11-26 | 2011-11-17 | 나일론 염 분말의 제조 방법, 및 나일론의 제조 방법 |
JP2012545703A JP5868332B2 (ja) | 2010-11-26 | 2011-11-17 | ナイロン塩粉末の製造方法、およびナイロンの製造方法 |
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US13/822,749 US9045591B2 (en) | 2010-11-26 | 2011-11-17 | Method for producing nylon salt powder, and method for producing nylon |
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TWI512006B (zh) | 2015-12-11 |
EP2644638A4 (en) | 2014-04-23 |
JPWO2012070457A1 (ja) | 2014-05-19 |
EP2644638B1 (en) | 2015-06-10 |
US20130172521A1 (en) | 2013-07-04 |
KR101604324B1 (ko) | 2016-03-17 |
CN103201314B (zh) | 2014-12-17 |
HK1186200A1 (en) | 2014-03-07 |
TW201241044A (en) | 2012-10-16 |
JP5868332B2 (ja) | 2016-02-24 |
EP2644638A1 (en) | 2013-10-02 |
KR20140000220A (ko) | 2014-01-02 |
US9045591B2 (en) | 2015-06-02 |
CN103201314A (zh) | 2013-07-10 |
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