CN109134831A - A kind of copolyesters preparation method of high yield - Google Patents
A kind of copolyesters preparation method of high yield Download PDFInfo
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- CN109134831A CN109134831A CN201810849717.1A CN201810849717A CN109134831A CN 109134831 A CN109134831 A CN 109134831A CN 201810849717 A CN201810849717 A CN 201810849717A CN 109134831 A CN109134831 A CN 109134831A
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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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
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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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/52—Polycarboxylic acids or polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
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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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
- C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/06—Unsaturated polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
The present invention provides a kind of copolyesters preparation methods of high yield, include the following steps: that (1) takes esterification raw material: binary acid, dihydric alcohol and catalyst according to the ratio, the esterification raw material of acquirement is put into reaction vessel, 160-240 DEG C is heated to after mixing, it is rapidly heated to 160 DEG C, 220 DEG C are warming up to 30-60 DEG C/h rate again, maintains to water outlet to reach theoretical value, completes esterification；(2) thermoplastic polyester is added into the reaction vessel for completing esterification, mixes, is warming up to 240-260 DEG C, after reaction system becomes clear, constant temperature keeps 10-60min, is decompressed to 50-150Pa, polycondensation 1-6h, and copolyesters is made.The copolyesters preparation method of the high yield, it is few that the preparation method consumes alcohol amount, underproof polyester product or the reclaimed materials of waste polyester can also be utilized, rapid reaction, high income, reduce production cost, reduce by-product generation and discharge of wastewater, energy conservation, emission reduction, environmental protection increase the performance of enterprises.
Description
Technical field
The present invention relates to copolyesters technical fields, and in particular, to a kind of copolyesters preparation method of high yield.
Background technique
Haveing excellent performance, being cheap for polyester, is widely used in the materials such as preparation engineering plastics, hot melt adhesive, fiber and film,
Especially with the polyester of aromatic rings, such as PBT, PET.These polyester are usually using the raw materials such as PTA, PIA, DMT and dihydric alcohol
It first carries out esterification or transesterification obtains oligomer, then carry out decompression polycondensation and macromolecule is made.But material all carries out esterification or ester
Alcohol dosage consumed by exchanging is larger, and the amount of the by-products such as water, methanol of generation is also bigger, so that the yield of polyester product
It is small.Yield=purpose product quality/total mass of raw material, the simple polyester overwhelming majority yield with esterification process or ester-interchange method
< 75%, it if PTA method produces PET, is calculated by n (PTA): n (EG)=1:2.5, PET theoretical yield is 60% (disregarding reuse alcohol).
Although extra alcohol can need to increase equipment and technique, and reuse alcohol purity due to more impurity declines with reuse.
In addition, producing the Polyester waste bulk deposition after underproof polyester waste material and use, resource is not only caused
Waste, and pollute the environment.Therefore, many researchs are caused to the recycling of waste polyester.Chinese patent
CN103710783A discloses the method for waste polyester bottle production polyester staple fiber, and the method production consumption is low, can prepare terylene
Staple fiber.Chinese patent CN101177503 provides a kind of method of preparing powder paint polyesters by discarded polyester decomposing reclamation,
The polyester of powdery paints is made using polyester waste material for the invention.With in first-class patented method, simple physiochemical mutagens are using but
The decline of waste polyester performance can not be made up；And the chemical method polymerizeing again after alcoholysis then exist consumption alcohol amount it is big, side reaction is more,
The problems such as yield is low and lead to bad economic results.
Summary of the invention
The present invention provides a kind of copolyesters preparation method of high yield, preparation method consumption alcohol amount is few, can be with benefit
With underproof polyester product or the reclaimed materials of waste polyester, rapid reaction, high income reduce production cost, reduce pair
Product generates and discharge of wastewater, energy conservation, emission reduction, environmental protection, increases the performance of enterprises.
Technical scheme is as follows: a kind of copolyesters preparation method of high yield includes the following steps:
(1) esterification raw material: binary acid, dihydric alcohol and catalyst is taken according to the ratio, and the esterification raw material of acquirement is put
Enter in reaction vessel, 160-240 DEG C is heated to after mixing, be rapidly heated to 160 DEG C, then is warming up to 220 with 30-60 DEG C/h rate
DEG C, it maintains to water outlet to reach theoretical value, completes esterification；(2) thermoplasticity is added into the reaction vessel for completing esterification
Polyester mixes, and is warming up to 240-260 DEG C, and constant temperature keeps 10-60min, is decompressed to 50-150Pa, polycondensation 1-6h, and copolymerization is made
Ester.
Preferably, the raw material of esterification further includes polyalcohol in step (1), the polyalcohol be selected from selected from glycerine,
One of trimethylolpropane or pentaerythrite or several mixtures；The molar ratio of the polyalcohol and the binary acid is
0~0.02:1.
Preferably, auxiliary agent also is added into the reaction vessel for completing esterification in step (2)；The auxiliary agent includes nucleation
Agent, crystallization promoter, light stabilizer and heat stabilizer.Such as talcum powder, titanium dioxide, polyethylene wax, triphenyl phosphite；It is described
The total dosage of auxiliary agent is the 0-5% of binary acid and dihydric alcohol quality summation.
Preferably, the binary acid is selected from one of binary aromatic carboxylic acid or its acid anhydrides, binary of fatty acids or its acid anhydrides
Or several mixture.
Preferably, the binary aromatic carboxylic acid or its acid anhydrides are selected from terephthalic acid (TPA), M-phthalic acid, phthalic anhydride, 1,3- naphthalene
Dioctyl phthalate, 2,6- naphthalenedicarboxylic acid etc.；Two without benzene ring structure that the binary of fatty acids or its acid anhydrides are carbon atom number 4-36
First carboxylic acid or its acid anhydrides are selected from 1, 4- succinic acid, glutaric anhydride, 1,6- adipic acid, 1,8- suberic acid, 1,10- decanedioic acid, 1,
One of 12- dodecanedioic acid, 1,14- tetracosandioic acid, dimeric dibasic acid or several mixtures.
Preferably, the dihydric alcohol is that molecule has 2 alcoholic extract hydroxyl groups and hydroxyl quantity is 2 only by C, H, O element group
At compound, be selected from ethylene glycol, 1,3-PD, 1,4-butanediol, 1,3-BDO, 2- methyl-1,3-propanediol, 1,5-
One of pentanediol, neopentyl glycol, 1,6-HD, 1,4 cyclohexane dimethanol, diethylene glycol (DEG), dipropylene glycol etc. are several
Mixture.
Preferably, the molar ratio of the binary acid and the dihydric alcohol is 1:1.1~2.5.
Preferably, the catalyst is selected from titanium system, tin class or antimony system；The total dosage of catalyst is binary acid and dihydric alcohol
The 0.03%-0.5% of quality summation.
The preferred catalyst is selected from one of butyl titanate, butyl stannonic acid, antimony oxide or several mixed
Close object.
Preferably, the thermoplastic polyester is selected from polyethylene terephthalate (PET), poly terephthalic acid propylene glycol
One of thermoplastic polyester of ester (PTT), polybutylene terephthalate (PBT) (PBT) and various modifications or several mixing
Object；The thermoplastic polyester can be underproof polyester product, qualification and the product without using or it is discarded after reclaimed materials；Institute
State 0.1-9.0 times that the total dosage of thermoplastic polyester is the binary acid and the dihydric alcohol quality summation.
The auxiliary agent is selected from nucleating agent, crystallization promoter, light stabilizer, heat stabilizer, such as talcum powder, titanium dioxide, poly- second
Alkene wax, triphenyl phosphite etc..
The invention has the benefit that the copolyesters preparation method of the high yield, passes through the method for alcoholysis after being first esterified
Oligomer is obtained, then copolyesters is made.Preparation method consumption alcohol amount is few, using underproof polyester product or can also discard
The reclaimed materials of polyester reduces the cost of product；And rapid reaction, high income, reduce by-product generation and discharge of wastewater,
Energy conservation, emission reduction, environmental protection.
Specific embodiment
In order to make goal of the invention of the invention, technical solution and technical effect are more clearly understood, below with reference to specific reality
Applying mode, the present invention is described further.It should be understood that specific embodiment described herein, for explaining only the invention,
It is not intended to limit the present invention.
Embodiment 1
A kind of copolyesters preparation method of high yield, takes esterification raw material, 168.3g dimeric dibasic acid, 54.1g1,4- fourth two
Pure and mild 0.21g butyl titanate；Reaction kettle is added in the esterification raw material of acquirement, is rapidly heated after mixing to 160 DEG C, then with
60 DEG C/h rate is warming up to 210 DEG C, maintains to water outlet to reach theoretical value, completes esterification；To the reaction for completing esterification
198.1g polybutylene terephthalate (PBT) and 0.13g triphenyl phosphite are added in container, mixes, and be warming up to 255 DEG C, to
Reaction system become clear after, constant temperature keep 10min, be slowly decompressed to 60Pa, polycondensation 1.5h, be made fusing point be 176 DEG C, in
Viscosity is the copolyesters of 10684cps at 230 DEG C.The yield that the method prepares copolyesters is 91%.
Embodiment 2
A kind of copolyesters preparation method of high yield, takes esterification raw material, by 60.8g M-phthalic acid, 142.5g pairs
Phthalic acid, 26.7g adipic acid, 197.8g1,4- butanediol, 0.17g butyl titanate and 0.13g antimony oxide；It will obtain
Esterification raw material reaction kettle is added, be rapidly heated after mixing to 160 DEG C, then be warming up to 220 DEG C with 30 DEG C/h rate, maintained
Reach theoretical value to water outlet, completes esterification；310g poly terephthalic acid is added into the reaction vessel for completing esterification
Reaction system is added in butanediol ester, 1.1g talcum powder, 1.1g polyethylene wax, 1.1g titanium dioxide, 1.1g triphenyl phosphite, mixes
It is even, and 245 DEG C are warming up to, after reaction system becomes clear, constant temperature keeps 30min, is slowly decompressed to 60Pa, polycondensation
1.2h, obtained fusing point is 158 DEG C, the copolyesters that viscosity is 18012cps when 230 DEG C.The yield that the method prepares copolyesters is
85%.
Embodiment 3
A kind of copolyesters preparation method of high yield, takes esterification raw material, by 60.8g phthalic anhydride, 142.5g1,3- naphthalene two
Formic acid, 26.7g1,4- succinic acid 197.8g1,4- cyclohexanedimethanol, 60g glycerine, 2.14g butyl titanate and 0.13g tri-
Aoxidize two antimony；Reaction kettle is added in the esterification raw material of acquirement, is rapidly heated after mixing to 160 DEG C, then with 30 DEG C/h rate
220 DEG C are warming up to, maintains to water outlet to reach theoretical value, completes esterification；It is added into the reaction vessel for completing esterification
3847.5g polybutylene terephthalate (PBT), 2g talcum powder, 2g polyethylene wax, 5g titanium dioxide, 5g triphenyl phosphite are added
Reaction system mixes, and is warming up to 245 DEG C, and after reaction system becomes clear, constant temperature keeps 30min, is slowly decompressed to
60Pa, polycondensation 1.2h, obtained fusing point is 158 DEG C, the copolyesters that viscosity is 18012cps when 230 DEG C.The method prepares copolyesters
Yield be 92%.
Embodiment 4
A kind of copolyesters preparation method of high yield, takes esterification raw material, by 60.8g M-phthalic acid, 142.5g2,
6- naphthalenedicarboxylic acid, 26.7g1,8- suberic acid, 197.8g dipropylene glycol, 60g trihydroxy methyl glycerine, 1.0g butyl stannonic acid and
0.13g antimony oxide；Reaction kettle is added in the esterification raw material of acquirement, is rapidly heated after mixing to 160 DEG C, then with 30
DEG C/h rate is warming up to 220 DEG C, it maintains to water outlet to reach theoretical value, completes esterification；Hold to the reaction for completing esterification
3000g polyethylene terephthalate, 10g talcum powder, 10g polyethylene wax, 12 titanium dioxides, 2.22g phosphorous acid are added in device
Reaction system is added in triphenylmethyl methacrylate, mixes, and be warming up to 245 DEG C, and after reaction system becomes clear, constant temperature keeps 30min,
Slowly it is decompressed to 60Pa, polycondensation 1.2h, obtained fusing point is 158 DEG C, the copolyesters that viscosity is 18075cps when 230 DEG C.The method
The yield for preparing copolyesters is 90%.
Embodiment 5
A kind of copolyesters preparation method of high yield, takes esterification raw material, by 60.8g1,3- naphthalenedicarboxylic acid, 142.5g
Terephthalic acid (TPA), 26.7g1,14- tetracosandioic acid, 197.8g2- methyl-1,3-propanediol, 60g trihydroxy methyl glycerine
0.30g butyl stannonic acid；Reaction kettle is added in the esterification raw material of acquirement, is rapidly heated after mixing to 160 DEG C, then with 30 DEG C/h
Rate is warming up to 220 DEG C, maintains to water outlet to reach theoretical value, completes esterification；Into the reaction vessel for completing esterification
2500g polypropylene terephthalate, 10.224g titanium dioxide, 8g talcum powder, 8g polyethylene wax, 8g phosphorous triphenyl phosphate is added
Reaction system is added in ester, mixes, and be warming up to 245 DEG C, and after reaction system becomes clear, constant temperature keeps 30min, slowly
It is decompressed to 60Pa, polycondensation 1.2h, obtained fusing point is 158 DEG C, the copolyesters that viscosity is 17080cps when 230 DEG C.Method preparation
The yield of copolyesters is 88%.
Embodiment 6
A kind of copolyesters preparation method of high yield, takes esterification raw material, by 60.8g M-phthalic acid, 142.5g penta
Dicarboxylic anhydride, 26.7g dimeric dibasic acid, 197.8g1,3- propylene glycol, 0.13g antimony oxide；The esterification raw material of acquirement is added
Reaction kettle is rapidly heated to 160 DEG C after mixing, then is warming up to 220 DEG C with 30 DEG C/h rate, maintains to reach theoretical value to water outlet,
Complete esterification；1000g polybutylene terephthalate (PBT), 5g talcum are added into the reaction vessel for completing esterification
Reaction system is added in powder, 5g polyethylene wax, 5g titanium dioxide, 5g triphenyl phosphite, mixes, and be warming up to 245 DEG C, wait react
After system becomes clear, constant temperature keeps 30min, is slowly decompressed to 60Pa, polycondensation 1.2h, and it is 158 DEG C, in 230 that fusing point, which is made,
DEG C when viscosity be 18030cps copolyesters.The yield that the method prepares copolyesters is 90%.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, architectural form cans be flexible and changeable, can be with derivative series product.It only makes several
Simple deduction or replace all shall be regarded as belonging to present invention scope of patent protection determined by the appended claims.
Claims (10)
1. a kind of copolyesters preparation method of high yield, which comprises the steps of:
(1) esterification raw material: binary acid, dihydric alcohol and catalyst is taken according to the ratio, and the esterification raw material of acquirement is put into instead
It answers in container, 160-240 DEG C is heated to after mixing, be rapidly heated to 160 DEG C, then be warming up to 220 DEG C with 30-60 DEG C/h rate,
It maintains to water outlet to reach theoretical value, completes esterification；(2) thermoplastic poly is added into the reaction vessel for completing esterification
Ester mixes, is warming up to 240-260 DEG C, and after reaction system becomes clear, constant temperature keeps 10-60min, is decompressed to 50-
Copolyesters is made in 150Pa, polycondensation 1-6h.
2. the copolyesters preparation method of high yield as described in claim 1, which is characterized in that esterification in step (1)
Raw material further includes polyalcohol, the polyalcohol be selected from selected from one of glycerine, trihydroxy methyl glycerine or pentaerythrite or
Several mixtures；The molar ratio of the polyalcohol and the binary acid is 0~0.02:1.
3. the copolyesters preparation method of high yield as described in claim 1, which is characterized in that also to completion ester in step (2)
Change in the reaction vessel of reaction and auxiliary agent is added；The auxiliary agent includes nucleating agent, crystallization promoter, light stabilizer and heat stabilizer；
The total dosage of auxiliary agent is the 0-5% of binary acid and dihydric alcohol quality summation.
4. the copolyesters preparation method of high yield as described in any one of claims 1-3, which is characterized in that the binary acid choosing
From one of binary aromatic carboxylic acid or its acid anhydrides, binary of fatty acids or its acid anhydrides or several mixtures.
5. the copolyesters preparation method of high yield as claimed in claim 4, which is characterized in that the binary aromatic carboxylic acid or its
Acid anhydrides is selected from terephthalic acid (TPA), M-phthalic acid, phthalic anhydride, 1,3- naphthalenedicarboxylic acid, 2,6- naphthalenedicarboxylic acid etc.；The binary of fatty acids
Or its acid anhydrides is the dicarboxylic acids or its acid anhydrides without benzene ring structure of carbon atom number 4-36, is selected from 1, 4- succinic acid, glutaric acid
Acid anhydride, 1,6- adipic acid, 1,8- suberic acid, 1,10- decanedioic acid, 1,12 dodecanedioic acid, 1,14- tetracosandioic acid, in dimeric dibasic acid
One or several kinds of mixtures.
6. the copolyesters preparation method of high yield as described in claim 1, which is characterized in that the dihydric alcohol is that molecule has
The compound being only made of C, H, O element that 2 alcoholic extract hydroxyl groups and hydroxyl quantity are 2, is selected from ethylene glycol, 1,3-PD, 1,
4- butanediol, 1,3 butylene glycol, 2- methyl-1,3-propanediol, 1,5- pentanediol, neopentyl glycol, 1,6-HD, 1,4- hexamethylene
One of alkane dimethanol, diethylene glycol (DEG), dipropylene glycol etc. or several mixtures.
7. the copolyesters preparation method of high yield as described in claim 1, which is characterized in that the binary acid and the binary
The molar ratio of alcohol is 1:1.1~2.5.
8. the copolyesters preparation method of high yield as described in claim 1, which is characterized in that the catalyst be selected from titanium system,
Tin class or antimony system；The total dosage of catalyst is the 0.03%-0.5% of binary acid and dihydric alcohol quality summation.
9. the copolyesters preparation method of high yield as claimed in claim 8, which is characterized in that the catalyst is selected from metatitanic acid four
One of butyl ester, butyl stannonic acid, antimony oxide or several mixtures.
10. the copolyesters preparation method of high yield as described in claim 1, which is characterized in that the thermoplastic polyester is selected from
Polyethylene terephthalate (PET), polypropylene terephthalate (PTT), polybutylene terephthalate (PBT) (PBT)
One of or several mixtures；The total dosage of thermoplastic polyester is the binary acid and the dihydric alcohol quality summation
0.1-9.0 times.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114920914A (en) * | 2022-05-28 | 2022-08-19 | 东北师范大学 | Preparation and application of bio-based polyester based on 1, 3-butanediol |
| CN115785407A (en) * | 2022-11-30 | 2023-03-14 | 美瑞新材料创新中心(山东)有限公司 | Method for preparing high-performance high-valued copolyester |
| CN116464727A (en) * | 2023-04-21 | 2023-07-21 | 广东舜天新材料有限公司 | Polyamide-containing elastomer and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102964579A (en) * | 2012-12-06 | 2013-03-13 | 盘锦科隆精细化工有限公司 | Reinforced thermoplastic polyester elastomer and preparation method thereof |
| CN103603086A (en) * | 2013-11-15 | 2014-02-26 | 中国纺织科学研究院 | Method for preparing environment-friendly ultra-soft polyester fibers |
| CN107163892A (en) * | 2017-07-11 | 2017-09-15 | 南通协鑫热熔胶有限公司 | A kind of utilization pet waste produces the preparation method of polyester hot-melt adhesive |
-
2018
- 2018-07-28 CN CN201810849717.1A patent/CN109134831A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102964579A (en) * | 2012-12-06 | 2013-03-13 | 盘锦科隆精细化工有限公司 | Reinforced thermoplastic polyester elastomer and preparation method thereof |
| CN103603086A (en) * | 2013-11-15 | 2014-02-26 | 中国纺织科学研究院 | Method for preparing environment-friendly ultra-soft polyester fibers |
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