KR101317766B1 - Polyether elastomer and manufacturing method thereof - Google Patents
Polyether elastomer and manufacturing method thereof Download PDFInfo
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- KR101317766B1 KR101317766B1 KR20100137157A KR20100137157A KR101317766B1 KR 101317766 B1 KR101317766 B1 KR 101317766B1 KR 20100137157 A KR20100137157 A KR 20100137157A KR 20100137157 A KR20100137157 A KR 20100137157A KR 101317766 B1 KR101317766 B1 KR 101317766B1
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Abstract
The present invention relates to a mixed acid of dimethyl terephthalate (DMT), dimethyl isophthalate (DMI), or a mixed acid of terephthalic acid (TPA) and isophthalic acid (IPA). ), Mixed diols of ethylene glycol (EG), polyethylene glycol (PEG), or 1,4-butanediol (1,4-Butanediol: 1,4-BD) and polytetramethylene ether glycol ( Mixed diols of polytetramethylene ether glycol (PTMEG), or ethylene glycol (EG), polyethylene glycol (PEG), 1,4-butanediol (1,4-Butanediol: 1,4-BD) and polytetra The present invention relates to a polyester-based elastomer having a low melting point function in which a mixed diol of methylene ether glycol (PTMEG) is prepared as a diol component (Diol).
Description
The present invention relates to a polyester-based elastomer used in monofilament, staple fiber, composite fiber, etc., which is used for clothing or industrial purposes, and a method for producing the same.
In general, a polyurethane-based elastomer commonly referred to as spandex is used as the elastomer. Polyurethane fibers do not dye well in acid dyes because they do not have dye seats in their molecular structure, so they are dyed using disperse dyes. However, they have significantly lower fastness than acid dyes. When mixed with other materials such as ester fibers, high temperature dyeing is difficult to use and there are many limitations in post-processing after weaving the fabric.
In addition, when the polyurethane fiber is exposed to the atmosphere, the physical properties and colors of elastic fibers change due to sunlight, and are easily discolored by waste gases in the atmosphere. Can not be used as a yarn for fabrics.
Due to the problems of the polyurethane-based elastomer as described above, the development of a polyester-based elastomer that is easy to manufacture and inexpensive to manufacture is progressing, and many polyester-based elastomers are manufactured and sold.
Korean Patent Application No. 1996-0030520 discloses a crystalline polyester having a melting point of 240-280 ° C. as a hard segment, a polytetramethylene glycol (PTMG) having a molecular weight of 500-3000 as a soft segment, and 3 The polyether ester elastomer was prepared by adding and copolymerizing a functional crosslinker, but the inherent viscosity (IV) of the polyether ester elastomer was too low, resulting in low spinning workability and satisfactory elastic recovery.
In addition, a number of documents, including Korean Patent Application No. 1996-080489, 1,4-butanediol (1,4- Butanediol: 1,4-BD) and Polytetramethylene glycol (PTMG) are used, but when dimethyl terephthalate (DMT) is used as a polymer, methanol is released as a by-product during the polymerization reaction. Lighter, flammable and toxic liquids require a separate recovery device and can be converted to a formaldehyde substance upon human inhalation, which can have a fatal effect on the human body.
In addition, dimethyl terephthalate (DMT) has high solubility, but is easily recrystallized during the reaction process, so unreacted substances are frequently generated, and dimethyl terephthalate (DMT) needs to be prevented from recrystallization in the polymerization process. There was a problem.
The present invention has been invented to solve the above problems, and an object thereof is to provide a polyester-based elastomer having a good reaction rate and easy manufacturing.
In addition, an object of the present invention is to provide a polyester-based elastomer having excellent elastic recovery rate and good spinning, injection, and extrusion workability and a method of manufacturing the same.
The present invention relates to a mixed acid of dimethyl terephthalate (DMT), dimethyl isophthalate (DMI), or a mixed acid of terephthalic acid (TPA) and isophthalic acid (IPA). ), Mixed diols of ethylene glycol (EG), polyethylene glycol (PEG), or 1,4-butanediol (1,4-Butanediol: 1,4-BD) and polytetramethylene ether glycol ( Mixed diols of polytetramethylene ether glycol (PTMEG), or ethylene glycol (EG), polyethylene glycol (PEG), 1,4-butanediol (1,4-Butanediol: 1,4-BD) and polytetra Provided is a polyester-based elastomer, characterized in that a mixed diol of methylene ether glycol (PTMEG) is prepared as a diol component (Diol).
In addition, the acid component and the diol component provides a polyester-based elastomer, characterized in that the polymerization is prepared in a molar ratio of 0.9 to 1.1: 0.9 to 2.0.
In addition, the mixing ratio of the dimethyl terephthalate (Dimethyl Terephthalate: DMT), dimethyl isophthalate (Dimethyl Isophthalate: DMI) mixed acid is a molar ratio of 6.0 to 9.9: 0.1 to 4.0, characterized in that the polyester-based elastomer to provide.
In addition, the mixed ratio of the terephthalic acid (Terephthalic Acid: TPA), isophthalic acid (Isophthalic Acid: IPA) is a mixture ratio of 6.0 to 9.9: 0.1 to 4.0 to provide a polyester-based elastomer, characterized in that the mixture.
In addition, the mixing ratio of the mixed diols of the ethylene glycol (EG), polyethylene glycol (PEG) PEG provides a polyester-based elastomer, characterized in that mixing in a molar ratio of 7.0 ~ 9.9: 0.1 ~ 3.0. .
In addition, the mixing ratio of the 1,4-butanediol (1,4-Butanediol: 1,4-BD) and a mixed diol of polytetramethylene ether glycol (PTMEG) is 7.0 ~ 9.9: 0.1 ~ 3.0 in a molar ratio It provides a polyester-based elastomer characterized in that the mixture.
In addition, the ethylene glycol (EG), polyethylene glycol (PEG), 1,4-butanediol (1,4-Butanediol: 1,4-BD) and polytetramethylene ether glycol: PTMEG) is a mixing ratio of the mixed diol is provided in a molar ratio of 7.0 ~ 9.9: 0.2 ~ 6.0: 7.0 ~ 9.9: 0.2 ~ 6.0 to provide a polyester-based elastomer.
In addition, it provides a polyester-based elastomer, characterized in that the cross-linking agent which is trifunctional or more than trifunctional alcohol or amines are further mixed with the acid component, diol component.
In addition, the crosslinking agent is trimellitic anhydride (TMA), tetra hydrophthalic Anhydride (THPA), maleic anhydride (MA), glutaric anhydride It provides a polyester-based elastomer, characterized in that any one or a mixture of two or more of a glide (Glutaric Anhydride: GA).
In addition, it provides a polyester-based elastomer, characterized in that the acid component, diol component is prepared by mixing a chain extender (Chain Extender) which is a bifunctional alcohol or amines.
In addition, the chain extender, methylene diphenyl diisocyanate (MDI), toluene diisocyanate (TDI), ethylene diamine (EDA), hydrazine (Hydrazine: HA), diethylene tri It provides a polyester-based elastomer, characterized in that any one or two or more of amine (Diethylene triamine: DETA) is mixed.
In addition, the present invention is a mixed acid of dimethyl terephthalate (Dimethyl Terephthalate (DMT), dimethyl isophthalate (DMI) in the polyester-based elastomer prepared from an acid component (Diacid) and a diol component (Diol) or Mixed diols of terephthalic acid (TPA) and isophthalic acid (IPA) as acid components (diacid), mixed diols of ethylene glycol (EG), polyethylene glycol (PEG), or 1 Mixed diols of 4-butanediol (1,4-Butanediol: 1,4-BD) and polytetramethylene ether glycol (PTMEG), or ethylene glycol (EG), polyethylene glycol: PEG), 1,4-butanediol (1,4-Butanediol: 1,4-BD) and a mixed diol of polytetramethylene ether glycol (PTMEG) is mixed with a diol component (Diol) 190 ~ 230 ℃ 3 ~ 6 hours and half with multi-stage heating method A esterification step of reacting; It provides a polyester-based elastomer production method comprising a polymerization step of polymerizing the esterification reaction for 40 to 100 minutes in a multi-stage temperature rising method between 225 ~ 270 ℃.
In addition, the acid component and the diol component provides a polyester-based elastomer production method characterized in that the polymerization is prepared in a molar ratio 0.9 ~ 1.1: 0.9 ~ 2.0.
In addition, the mixing ratio of the dimethyl terephthalate (Dimethyl Terephthalate: DMT), dimethyl isophthalate (Dimethyl Isophthalate: DMI) mixed acid is a molar ratio of 6.0 to 9.9: 0.1 to 4.0 to prepare a polyester-based elastomer Provide a method.
In addition, the mixed ratio of the terephthalic acid (Terephthalic Acid: TPA), isophthalic acid (Isophthalic Acid: IPA) is a mixing ratio of 6.0 to 9.9: 0.1 to 4.0 provides a method for producing a polyester-based elastomer, characterized in that the mixing ratio. .
In addition, the mixing ratio of the mixed diols of the ethylene glycol (EG), polyethylene glycol (PEG) PEG is a method of producing a polyester-based elastomer, characterized in that mixing in a molar ratio of 7.0 ~ 9.9: 0.1 ~ 3.0 to provide.
In addition, the mixing ratio of the 1,4-butanediol (1,4-Butanediol: 1,4-BD) and a mixed diol of polytetramethylene ether glycol (PTMEG) is 7.0 ~ 9.9: 0.1 ~ 3.0 in a molar ratio It provides a polyester-based elastomer manufacturing method characterized in that the mixing.
In addition, the ethylene glycol (EG), polyethylene glycol (PEG), 1,4-butanediol (1,4-Butanediol: 1,4-BD) and polytetramethylene ether glycol: PTMEG) is a mixing ratio of the mixed diol in a molar ratio of 7.0 to 9.9: 0.2 to 6.0: 7.0 to 9.9: 0.2 to 6.0 provides a method for producing a polyester-based elastomer, characterized in that the mixture.
In addition, it provides a polyester-based elastomer production method characterized in that the polymerization step is further mixed with a cross-linking agent of trifunctional or more than trifunctional alcohol or amine to the esterification reaction.
In addition, the crosslinking agent is trimellitic anhydride (TMA), tetra hydrophthalic Anhydride (THPA), maleic anhydride (MA), glutaric anhydride It provides a polyester-based elastomer manufacturing method, characterized in that any one or two or more of a glide (Glutaric Anhydride: GA).
In addition, it provides a polyester-based elastomer manufacturing method characterized in that the polymerization process by further mixing the chain extender (Chain Extender) which is a difunctional alcohol or amine to the esterification reactant.
In addition, the chain extender, methylene diphenyl diisocyanate (MDI), toluene diisocyanate (TDI), ethylene diamine (EDA), hydrazine (Hydrazine: HA), diethylene tri It provides a polyester-based elastomer manufacturing method characterized in that any one or two or more of amine (Diethylene triamine: DETA) is mixed.
In addition, it provides a polyester-based elastomer production method characterized in that the reaction is further added in the esterification step and the reaction catalyst, antioxidant and heat stabilizer further added in the polymerization step.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that, in the drawings, the same components or parts have the same reference numerals as much as possible. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.
The terms "about "," substantially ", etc. used to the extent that they are used herein are intended to be taken to mean an approximation of, or approximation to, the numerical values of manufacturing and material tolerances inherent in the meanings mentioned, Accurate or absolute numbers are used to help prevent unauthorized exploitation by unauthorized intruders of the referenced disclosure.
The present invention relates to a polyester-based elastomer prepared from an acid component (Diacid) and a diol component (Diol), the acid component is a mixture of dimethyl terephthalate (DMT), dimethyl isophthalate (Dimethyl Isophthalate: DMI) Acids or mixed acids of terephthalic acid (TPA) and isophthalic acid (IPA) may be used.
As the diol component, mixed diols of ethylene glycol (EG) and polyethylene glycol (PEG) may be used, and 1,4-butanediol (1,4-Butanediol: 1,4-BD) and polytetra Mixed diols of methylene ether glycol (PTMEG) may be used, ethylene glycol (EG), polyethylene glycol (PEG), 1,4-butanediol (1,4-Butanediol: 1, 4-BD) and a mixed diol of polytetramethylene ether glycol (PTMEG) may be used.
The polyethylene glycol (PEG) has a molecular weight of 400 to 20000, and the polytetramethylene ether glycol (PTMEG) may use a polymer having a molecular weight of 1000 to 2000 to prepare the polyester-based elastomer of the present invention.
The acid component and the diol component are prepared by reacting the compound of the acid component and the compound of the diol component in a one-to-one manner at the time of polymerization, and the acid component and the diol component are preferably prepared by polymerization in a molar ratio of 0.9 to 1.1: 0.9 to 1.1.
If any one of the acid component and diol component is mixed too much, it will be discarded without being used for polymerization. The acid component and diol component are preferably mixed in a similar amount. 0.9 to 1.1: 1.1 to 2.0 may be further mixed to recover the polymerization.
When using the mixed acid of dimethyl terephthalate (Dimethyl Terephthalate: DMT), dimethyl isophthalate (Dimethyl Isophthalate: DMI), the mixing ratio of dimethyl terephthalate (DMT), dimethyl isophthalate (DMI) is 6.0 ~ 9.9: 0.1 ~ It would be desirable to mix at 4.0. As the amount of the dimethyl isophthalate (DMI) is increased, the melting point of the polymer may be lowered, so that the dimethyl isophthalate (DMI) may have an excellent low melting point function that can be developed for adhesion with other components.
When the mixed acid of terephthalic acid (TPA) and isophthalic acid (Isophthalic acid: IPA) is mixed, the mixing ratio of terephthalic acid (TPA) and isophthalic acid (IPA) is 6.0 to 9.9: 0.1 to 4.0 in a molar ratio. desirable. As the amount of isophthalic acid (IPA) used increases, the melting point of the polymer is lowered, so that it may have an excellent low melting point function that can be developed for adhesion with other components.
When the mixed diol of the ethylene glycol (EG) and polyethylene glycol (PEG) is used, the mixing ratio of ethylene glycol (EG) and polyethylene glycol (PEG) is mixed at a molar ratio of 7.0 to 9.9: 0.1 to 3.0. It is preferable. When the amount of the polyethylene glycol (PEG) is used too little may reduce the elastic force, when the amount used is too much, the physical properties may be lowered and not suitable for use.
1,4-butanediol (1,4-BD) when a mixed diol of the 1,4-butanediol (1,4-BD) and polytetramethylene ether glycol (PTMEG) is used The mixing ratio of polytetramethylene ether glycol (PTMEG) is preferably in a molar ratio of 7.0 to 9.9: 0.1 to 3.0. When the capacity of the polytetramethylene ether glycol (PTMEG) is too small, the elastic force may be lowered. If the amount of the polytetramethylene ether glycol (PTMEG) is too low, the physical property may be lowered and thus not suitable for use.
In addition, the ethylene glycol (EG), polyethylene glycol (PEG), 1,4-butanediol (1,4-Butanediol: 1,4-BD) and polytetramethylene ether glycol: When using a mixed diol of PTMEG), the mixing ratio of ethylene glycol (EG), polyethylene glycol (PEG), 1,4-butanediol (1,4-BD) and polytetramethylene ether glycol (PTMEG) is in a molar ratio of 7.0 to 9.9: 0.2-6.0: 7.0-9.9: 0.2-6.0 may be mixed.
Ethylene glycol (EG), polyethylene glycol (PEG), 1,4-butanediol (1,4-Butanediol: 1,4-BD) and polytetramethylene ether glycol: When using a mixed diol of PTMEG), it is preferable that the total content of polyethylene glycol (PEG) and polytetramethylene ether glycol (PTMEG) does not exceed 50 mol% based on the total diol component. When the total content of the polyethylene glycol (PEG) and polytetramethylene ether glycol (PTMEG) exceeds 50 mol% based on the total diol component, physical properties of the polyester-based elastomer prepared may be reduced.
The molecular structure of the polyester-based elastomer of the present invention made of the diacid and the diol component forms a chain in the main chain of the polymer, or the polymer structure is formed into a mesh structure to form an intrinsic viscosity and elasticity of the elastomer. In order to improve the recovery rate, a crosslinking agent which is a trifunctional or higher alcohol or amine may be further mixed.
The crosslinking agent is a trifunctional or more than trifunctional material, trimellitic anhydride (TMA), tetra hydrophthalic anhydride (THPA), maleic anhydride (MA) One of Glutaric Anhydride (GA) or a mixture of two or more may be used.
In addition, it may be prepared by further mixing a bifunctional chain extender such as diol and diamine in order to extend the main chain of the polymer of the present invention and to strengthen the intermolecular bonds.
The chain extender is methylene diphenyl diisocyanate (MDI), toluene diisocyanate (TDI), ethylene diamine (EDA), hydrazine (Hydrazine: HA), diethylene triamine ( Diethylene triamine (DETA) or any one or more may be used.
The polyester-based elastomer of the present invention as described above is prepared including an esterification step and a polymerization step.
The esterification step is a mixed acid of dimethyl terephthalate (DMT), dimethyl isophthalate (Dimethyl Isophthalate (DMI) or mixed acid of terephthalic acid (TPA), isophthalic acid (Isophthalic Acid: IPA) As diacid, mixed diols of ethylene glycol (EG) and polyethylene glycol (PEG), or 1,4-butanediol (1,4-Butanediol: 1,4-BD) and polytetramethylene ether Mixed diols of glycol (Polytetramethylene ether glycol: PTMEG) or polyethylene glycol (PEG), 1,4-butanediol (1,4-Butanediol: 1,4-BD) and polytetramethylene ether glycol : A process of producing an oligomerized esterification product by mixing mixed diols of PTMEG as diol components and reacting for 3 to 6 hours in a multi-stage heating method between 190 and 230 ° C.
In the esterification step, the mixture of the acid component and the diol component is subjected to the esterification reaction at a multi-stage elevated temperature which maintains the reaction for about 30 to 60 minutes at each step while increasing the reaction temperature from 190 ° C to 230 ° C by 5 to 10 ° C. The esterification process is preferably carried out under a pressure of 1400 ~ 2000 Torr.
As the reaction catalyst, a titanium catalyst such as tetrabutyl titanate (TBT) may be used, and a reaction catalyst such as magnesium acetate or calcium acetate may be used.
The polymerization process is a multi-stage heating method for maintaining the reaction for about 5 to 30 minutes at each step while increasing the reaction temperature by 5 to 10 ° C. at 225 to 270 ° C. under 0.1 to 1 Torr pressure. The polymerization process is carried out for a time to raise the final reaction temperature to about 250 ~ 270 ℃ proceeds the polymerization process.
It is preferable that the polymerization process proceeds when the intrinsic viscosity of the elastomer reaches 1.2 to 2.2 under high vacuum of 0.1 to 1 Torr.
As described above, when the multi-stage heating method is applied to the esterification process and the polymerization process, the possibility of the unreacted substance is significantly lowered and the reaction rate is improved because the raw material is not sublimed.
Before the polymerization process, the crosslinking agent and the chain extender described above may be added to the esterification reactant to improve the intrinsic viscosity and elastic recovery rate of the elastomer.
In addition, a reaction catalyst, an antioxidant, a heat stabilizer, a metal catalyst, or the like may be added to the esterification reactant to promote the reaction in the polymerization reaction.
The reaction catalyst may be used the titanium-based catalyst described above, and the antioxidant may be a hindered phenol compound such as Irganox-1010 (Iga1010), Irganox-1222 (Iga1222), Tinuvin770, Ethanox330, etc. Could be.
In addition, the heat stabilizer may be any one or a mixture of two or more of a space-based compound such as phosphate (Phosphoric Acid), triethyl phosphate (Triethyl Phosphate), trimethyl phosphate (Trimethyl Phosphate), triphenyl phosphate (Triphenyl Phosphate) have.
Polyester-based elastomer according to the present invention is a mixed acid or terephthalic acid (TPA), isophthalic acid (dimethyl terephthalate (DMT), dimethyl isophthalate (DMI) as an acid component Ethylene glycol (EG), polyethylene glycol (PEG), 1,4-butanediol (1,4-BD) and polytetra It is effective to provide a novel polyester-based elastomer having a high elastic recovery rate by using a mixed diol of two or more mixed in methylene ether glycol (PTMEG).
In addition, a crosslinking agent and a chain extender, which are multifunctional compounds, may be further added in the polymerization process to improve the performance of the elastomer and to improve spinning, injection, and extrusion workability.
Hereinafter, although the Example of the method for manufacturing the polyester-type elastomer of this invention is shown, it is not limited.
Examples 1 to 4
As shown in Tables 1 to 4, the polyester-based elastomer was prepared using the acid component, the diol component, and various additives.
Diacid and Diol were reacted for 20 to 30 minutes at each step while raising the reaction temperature from 190 to 230 ℃ by 5 ~ 10 ℃ in a multi-stage heating method under 1200 ~ 1500 Torr pressure. Reaction time The esterification process was performed for 4 hours and 30 minutes.
The esterification reaction produced in the esterification process was reacted for 5 to 30 minutes at each step while increasing the reaction temperature from 225 to 260 ° C by 5 to 10 ° C. in a multi-stage heating method under 0.3 ~ 0.8 Torr pressure. The polymerization process was performed for 30 minutes.
When adding a crosslinking agent and a chain extender, it added to the said esterification reaction and performed the polymerization process.
The reaction catalyst was added in both the esterification step and the polymerization step, and the antioxidant and the heat stabilizer were added to the esterification reactant after the reaction was carried out to perform the polymerization step.
◎ Main ingredient and amount of use of Example 1
◎ Main ingredient and amount of use of Example 2
◎ Main ingredient and amount of use of Example 3
◎ Main ingredient and amount of use of Example 4
◎ Main ingredient and amount of use of Example 5
Melting point, glass transition temperature (Tg), intrinsic viscosity, melt index, elastic recovery rate of the polyester-based elastomer prepared according to the present invention was shown in Table 6 by measuring the following method.
◎ How to measure
* Melting point, glass transition temperature
Using a differential scanning calorimeter (Pertain Elmer DSC-7) was measured at a temperature increase rate of 20 ℃ / min.
* Intrinsic viscosity
Using a Ubbelohde capillary viscometer, the sample was weighed at 0.4g / dl in a phenol (Phenol) / 1,1,2,2, -tetra chloro ethane mixed solvent (6/4 by weight) and 25 It was measured in the environment.
* Melt Index
It measured at 220 degreeC by the method of JISK6760.
* Elastic recovery rate
Using Instron, a specimen with a thickness of 2 mm and a length of 100 mm in the shape of a dumbbell was prepared. The specimen was stretched to 200% at a tensile speed of 100 mm / min, then restored to its original length at the same speed, and re-extended. The length when stress appears at the time was determined, and the elastic recovery rate was obtained by the following equation.
Elastic recovery rate (%) = (E0-E1 / E0) X 100
E0: length of elongation, E1: length of stress at re-extension
(10min, 220 ℃)
(%)
As shown in Table 5, it can be seen that the polyester-based elastomer according to the present invention is an elastomer having excellent physical properties such that the elastic recovery rate of most embodiments is 80% or more.
While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be obvious to the person.
Claims (23)
Diacids are mixed acids of dimethyl terephthalate (DMT), dimethyl isophthalate (DMI) or mixed acids of terephthalic acid (TPA) and isophthalic acid (IPA). Mixed diols of ethylene glycol (EG) and polyethylene glycol (PEG), or 1,4-butanediol (1,4-butanediol: 1,4-BD) and polytetramethylene ether glycol : Mixed diol of PTMEG or ethylene glycol (EG), polyethylene glycol (PEG), 1,4-butanediol (1,4-Butanediol: 1,4-BD) and polytetramethylene ether glycol An esterification step of mixing a mixed diol of (Polytetramethylene ether glycol: PTMEG) as a diol component (Diol) and reacting for 3 to 6 hours in a multi-stage heating method at 190 to 230 ° C .;
Trimellitic Anhydride (TMA), Tetra hydrophthalic Anhydride (THPA), Maleic Anhydride (MA), Glutaric Anhydride were added to the esterification reaction. Polyester-based elastic, characterized in that it comprises a polymerization step of further polymerizing the crosslinking agent mixed with any one or two or more of the glide (Glutaric Anhydride: GA) for 2 to 6 hours at a multi-stage heating method between 225 ~ 270 ℃ Polymer preparation method.
The acid component and the diol component is a polyester-based elastomer production method, characterized in that the polymerization is prepared in a molar ratio 0.9 ~ 1.1: 0.9 ~ 2.0.
Mixing ratio of the dimethyl terephthalate (Dimethyl Terephthalate: DMT), dimethyl isophthalate (Dimethyl Isophthalate: DMI) mixed acid is a molar ratio of 6.0 to 9.9: 0.1 to 4.0, characterized in that the polyester elastomer production method.
The mixing ratio of the terephthalic acid (Terephthalic Acid: TPA), isophthalic acid (Isophthalic Acid: IPA) is a mixed ratio of 6.0 ~ 9.9: 0.1 ~ 4.0 in a molar ratio.
Mixing ratio of the mixed diols of the ethylene glycol (EG), polyethylene glycol (PEG) PEG is a molar ratio of 7.0 to 9.9: 0.1 to 3.0, characterized in that the polyester-based elastomer production method.
The mixing ratio of the 1,4-butanediol (1,4-Butanediol: 1,4-BD) and the mixed diol of polytetramethylene ether glycol (PTMEG) is mixed in a molar ratio of 7.0 ~ 9.9: 0.1 ~ 3.0 Polyester-based elastomer production method, characterized in that.
The ethylene glycol (EG), polyethylene glycol (PEG), 1,4-butanediol (1,4-Butanediol: 1,4-BD) and polytetramethylene ether glycol (PTMEG) The mixing ratio of the phosphorus mixed diol is a molar ratio of 7.0 to 9.9: 0.2 to 6.0: 7.0 to 9.9: 0.2 to 6.0, characterized in that the polyester-based elastomer production method.
A method of producing a polyester-based elastomer, characterized in that a polymerization process is further carried out by further mixing a chain extender, which is a bifunctional alcohol or an amine, with the esterification reactant.
The chain extender is methylene diphenyl diisocyanate (MDI), toluene diisocyanate (TDI), ethylene diamine (EDA), hydrazine (Hydrazine: HA), diethylene triamine ( Diethylene triamine: DETA) any one or two or more polyester-based elastomer manufacturing method characterized in that it is mixed.
The method of producing a polyester-based elastomer, characterized in that for adding the reaction catalyst in the esterification step and further adding a reaction catalyst, antioxidant and heat stabilizer in the polymerization step.
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| KR102009473B1 (en) * | 2015-03-31 | 2019-08-12 | 주식회사 휴비스 | Polyester Type Elastic Adhesive Resine Composition |
| KR102009472B1 (en) * | 2015-03-31 | 2019-08-12 | 주식회사 휴비스 | Polyester Type Elastic Adhesive Resine Composition |
| KR102186522B1 (en) | 2017-11-24 | 2020-12-03 | 주식회사 엘지화학 | Method for preparing poly(ether ester) copolymer |
| CN113667092A (en) * | 2021-08-20 | 2021-11-19 | 曙宜博(苏州)新材料科技有限公司 | Preparation method of high molecular weight polyether for memory pillow |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR930000115B1 (en) * | 1988-12-13 | 1993-01-09 | 주식회사 코오롱 | Preparation for polyester elastomer |
| JPH10204168A (en) * | 1997-01-23 | 1998-08-04 | Teijin Ltd | Polyester elastomer improved in wet-heat durability and its production |
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| KR20120075120A (en) | 2012-07-06 |
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