CN108623796A - A method of with the Production of Terephthalic Acid terephthalic unsaturated polyester resin that gives up - Google Patents
A method of with the Production of Terephthalic Acid terephthalic unsaturated polyester resin that gives up Download PDFInfo
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- CN108623796A CN108623796A CN201810577422.3A CN201810577422A CN108623796A CN 108623796 A CN108623796 A CN 108623796A CN 201810577422 A CN201810577422 A CN 201810577422A CN 108623796 A CN108623796 A CN 108623796A
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- acid
- terephthalic
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- tpa
- unsaturated polyester
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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
- C08G63/66—Polyesters containing oxygen in the form of ether groups
- C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/676—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and 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
- 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
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/83—Alkali metals, alkaline earth metals, beryllium, magnesium, copper, silver, gold, zinc, cadmium, mercury, manganese, or compounds thereof
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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
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/85—Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
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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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Polyesters Or Polycarbonates (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The present invention relates to a kind of recoverying and utilizing method of terephthalic acid (TPA) rinsing residue, specifically a kind of method producing terephthalic unsaturated polyester resin using terephthalic acid (TPA) rinsing residue.Method provided by the invention includes step：(1) useless terephthalic acid (TPA) is put into dihydric alcohol, is warming up to 120 DEG C；(2) under nitrogen protection, composite catalyst is added, esterification is carried out at 175 190 DEG C, until system acid value is less than 10mgKOH/g；(3) when being cooled to 160 DEG C, dihydric alcohol, antioxidant, unsaturated dibasic acid/acid anhydrides is added, 175 195 DEG C of progress polycondensation reactions are warming up to, until system acid value is less than 60mgKOH/g；(4) at 202 205 DEG C, Depressor response to system acid value is less than 40mgKOH/g, cools to 150 DEG C of thinnings, and reaction to system acid value is 18 23mgKOH/g, you can terephthalic unsaturated polyester resin is made.This Project Product, as raw material, greatly reduces production cost, it is ensured that environment optimization is turned waste into wealth using crude terephthalic acid.
Description
Technical field
It is specifically a kind of using to benzene the present invention relates to a kind of recoverying and utilizing method of terephthalic acid (TPA) rinsing residue
The method that dioctyl phthalate rinsing residue produces terephthalic unsaturated polyester resin.
Background technology
Terephthalic unsaturated polyester resin is the new product succeeded in developing in recent years, the terephthalic acid (TPA) with linear structure
Terephthalic unsaturated polyester resin is produced instead of phthalic acid, carboxyl is in the contraposition of phenyl ring, and interaction is small, chemistry
Nature comparison is stablized, so showing preferable resistance to chemical corrosion；Polyester macromolecule symmetrical configuration simultaneously, marshalling,
Dipole moment is close to zero, so showing preferable electrical property, mechanical performance and heat resistance, chemical resistance and heat resistance
It is especially prominent, it is more than metaphenylene unsaturated polyester resin, even more m-phthalate unsaturated polyester resin cannot compare, and price
It is cheaper than metaphenylene unsaturated polyester resin, it is suitable with m-phthalate unsaturated polyester resin.
P-phthalic acid's price currently on the market is expensive, is badly in need of finding a kind of cheap substitute, and present
There are many very cheap useless terephthalic acid (TPA)s to need to handle in the market, but the useless terephthaldehyde of more scientific and reasonable utilization not yet
The method of acid production terephthalic unsaturated polyester resin.
Invention content
In order to solve the above technical problems, the purpose of the invention is to provide it is a kind of using give up Production of Terephthalic Acid to benzene
The method of type unsaturated polyester resin, turns waste into wealth.
Method provided by the invention with the Production of Terephthalic Acid terephthalic unsaturated polyester resin that gives up, including following step
Suddenly：
(1) by useless terephthalic acid (TPA), dihydric alcohol input reaction kettle, it is warming up to 115-125 DEG C；
(2) under nitrogen protection, composite catalyst is added, the progress esterification at 175-190 DEG C is warming up to, until system is sour
Value is less than 10mgKOH/g；The composite catalyst is by the mixture of stannous oxide, Dibutyltin oxide and acetate, dosage
For the 0.15-0.5wt% for the terephthalic acid (TPA) that gives up；Its effect is that entire reaction temperature is made to drop to 175-195 DEG C from 230 DEG C,
And shorten the reaction time 5 hours.
(3) when being cooled to 155-165 DEG C, dihydric alcohol, antioxidant, unsaturated dibasic acid/acid anhydrides is added, is warming up to 175-
195 DEG C of progress polycondensation reactions, until system acid value is less than 60mgKOH/g；
(4) at 202-205 DEG C, Depressor response (vacuum degree can be -0.096MPa) is less than to system acid value
40mgKOH/g, cools to 145-155 DEG C of thinning, and reaction to system acid value is 18-23mgKOH/g, you can p-phenyl's insatiable hunger is made
And polyester resin.
Wherein, the useless terephthalic acid (TPA) of the step (1) includes by weight terephthalic acid (TPA) 60-90%, to methylbenzene
Formic acid 10-20%.
In the above method, the molar ratio of acid and alcohol is 1 in reaction system：The molal quantity of 1.05-1.10, the acid are to benzene
The molal quantity of the summation of dioctyl phthalate, p-methylbenzoic acid and unsaturated dibasic acid molal quantity, the alcohol is rubbing for various dihydric alcohols
The sum of your number.
Wherein, dihydric alcohol is one kind or several in ethylene glycol, diethylene glycol (DEG) and propylene glycol in the step (1) and step (3)
Kind.
Wherein, acetate is zinc acetate in the step (2).
Preferably, in the step (2) in composite catalyst stannous oxide, Dibutyltin oxide and zinc acetate weight ratio
For 0.9-1.1：1.8-2.2：1.
Wherein, unsaturated dibasic acid/acid anhydrides is maleic anhydride (cis-butenedioic anhydride) and fumaric acid in the step (3)
The weight ratio of the mixture of (fumaric acid), the useless terephthalic acid (TPA) and the unsaturated dibasic acid/unsaturated dicarboxylic acid anhydride is 1
: 1.1~1.5.Maleic anhydride and it is fumaric compounding so that the glass fiber reinforced plastics product hardness of making is improved, tensile strength more
It is good.
Wherein, antioxidant is triphenyl phosphite in the step (3).The glossiness for substantially increasing product, makes product
Seem bright as new.
Wherein, the method for thinning is that styrene is added in the step (4), and temperature is 70-78 DEG C, is stirred 60-70 minutes.
Terephthalic unsaturated polyester resin prepared by a kind of any of the above described preparation method, 50 DEG C hereinafter, viscosity is 400-
650mPas/25 DEG C, gelling time is 5-10min/25 DEG C.
Compared with prior art, innovative point of the invention is：
1. this Project Product provides catalyst of the composite catalyst as esterifying polycondensation, effect is to make entirely to react temperature
Degree drops to 185-195 DEG C from 230 DEG C, and shortens the reaction time 5 hours.
2. this Project Product uses the mixture of triphenyl phosphite as antioxidant, the gloss of product is substantially increased
Degree makes product seem bright as new.
3. greatly reducing production cost, it is ensured that environment optimization as raw material using crude terephthalic acid in the present invention.
4. adding fumaric acid in the method, the glass fiber reinforced plastics product hardness raising of making, tensile strength are more preferable.
Description of the drawings
Fig. 1 is the process flow chart of the present invention
Specific implementation mode
It is that the present invention will be further described for specific implementation mode, but following implementation is only to this hair with lower part
Bright is explained further, and does not represent the scope of the present invention and is only limitted to this, the equivalence replacement that every thinking with the present invention is done,
In protection scope of the present invention.
Following embodiment and to the useless terephthalic acid (TPA) in example by weight, the content of terephthalic acid (TPA) is 80%, to first
Yl benzoic acid is 15%.
Embodiment 1
(1) 4400kg is given up in terephthalic acid (TPA) input 4200kg diethylene glycol (DEG)s, 1400kg ethylene glycol, is warming up to 120 DEG C；
(2) under nitrogen protection, 8kg composite catalysts are added, 190 DEG C of progress esterifications are warming up to, until system acid value
Less than 10mgKOH/g；Composite catalyst is that weight ratio is 1：2：The mixing of 1 stannous oxide, Dibutyltin oxide and zinc acetate
Object；
(3) when being cooled to 160 DEG C, 1400kg propylene glycol, 2.5kg triphenyl phosphites, 3000kg maleic acids is added
Acid anhydride and 2000kg fumaric acid are warming up to 185 DEG C of progress polycondensation reactions, until system acid value is less than 60mgKOH/g；
(4) at 202-205 DEG C, Depressor response to system acid value is less than 40mgKOH/g, cools to 150 DEG C of thinnings, that is, adds
Enter 6700kg styrene, temperature is 70-78 DEG C, is stirred 60-70 minutes, and reaction to system acid value is 18-23mgKOH/g, you can
Terephthalic unsaturated polyester resin is made.
The preparation process of above-mentioned terephthalic unsaturated polyester resin is 20 hours total.
Embodiment 2
(1) 4400kg is given up in terephthalic acid (TPA) input 4200kg diethylene glycol (DEG)s, 1400kg ethylene glycol, is warming up to 120 DEG C；
(2) under nitrogen protection, 8kg composite catalysts are added, 190 DEG C of progress esterifications are warming up to, until system acid value
Less than 10mgKOH/g；Composite catalyst is that weight ratio is 2：2：The mixing of 1 stannous oxide, Dibutyltin oxide and zinc acetate
Object；
(3) when being cooled to 160 DEG C, 1400kg propylene glycol, 2.5kg triphenyl phosphites, 3000kg maleic acids is added
Acid anhydride and 2000kg fumaric acid are warming up to 185 DEG C of progress polycondensation reactions, until system acid value is less than 60mgKOH/g；
(4) at 202-205 DEG C, Depressor response to system acid value is less than 40mgKOH/g, cools to 150 DEG C of thinnings, that is, adds
Enter 6700kg styrene, temperature is 70-78 DEG C, is stirred 60-70 minutes, and reaction to system acid value is 18-23mgKOH/g, you can
Terephthalic unsaturated polyester resin is made.
The preparation process of above-mentioned terephthalic unsaturated polyester resin is 19.5 hours total.
Comparative example 1
(1) 4400kg is given up in terephthalic acid (TPA) input 4200kg diethylene glycol (DEG)s, 1400kg ethylene glycol, is warming up to 120 DEG C；
(2) under nitrogen protection, 8kg composite catalysts are added, 190 DEG C of progress esterifications are warming up to, until system acid value
Less than 10mgKOH/g；Composite catalyst is that weight ratio is 3：1 stannous oxide and the mixture of zinc acetate；
(3) when being cooled to 160 DEG C, 1400kg propylene glycol, 2.5kg triphenyl phosphites, 3000kg maleic acids is added
Acid anhydride and 2000kg fumaric acid are warming up to 185 DEG C of progress polycondensation reactions, until system acid value is less than 60mgKOH/g；
(4) at 202-205 DEG C, Depressor response to system acid value is less than 40mgKOH/g, cools to 150 DEG C of thinnings, that is, adds
Enter 6700kg styrene, temperature is 70-78 DEG C, is stirred 60-70 minutes, and reaction to system acid value is 18-23mgKOH/g, you can
Terephthalic unsaturated polyester resin is made.
The preparation process of above-mentioned terephthalic unsaturated polyester resin is 26 hours total.
Comparative example 2
(1) 4400kg is given up in terephthalic acid (TPA) input 4200kg diethylene glycol (DEG)s, 1400kg ethylene glycol, is warming up to 120 DEG C；
(2) under nitrogen protection, 8kg composite catalysts are added, 190 DEG C of progress esterifications are warming up to, until system acid value
Less than 10mgKOH/g；Composite catalyst is that weight ratio is 3：1 Dibutyltin oxide and the mixture of zinc acetate；
(3) when being cooled to 160 DEG C, 1400kg propylene glycol, 2.5kg triphenyl phosphites, 3000kg maleic acids is added
Acid anhydride and 2000kg fumaric acid are warming up to 185 DEG C of progress polycondensation reactions, until system acid value is less than 60mgKOH/g；
(4) at 202-205 DEG C, Depressor response to system acid value is less than 40mgKOH/g, cools to 150 DEG C of thinnings, that is, adds
Enter 6700kg styrene, temperature is 70-78 DEG C, is stirred 60-70 minutes, and reaction to system acid value is 18-23mgKOH/g, you can
Terephthalic unsaturated polyester resin is made.
The preparation process of above-mentioned terephthalic unsaturated polyester resin is 25 hours total.
Comparative example 3
(1) 4400kg is given up in terephthalic acid (TPA) input 4200kg diethylene glycol (DEG)s, 1400kg ethylene glycol, is warming up to 120 DEG C；
(2) under nitrogen protection, 8kg composite catalysts are added, 190 DEG C of progress esterifications are warming up to, until system acid value
Less than 10mgKOH/g；Composite catalyst is that weight ratio is 2：2 stannous oxide and the mixture of Dibutyltin oxide；
(3) when being cooled to 160 DEG C, 1400kg propylene glycol, 2.5kg triphenyl phosphites, 3000kg maleic acids is added
Acid anhydride and 2000kg fumaric acid are warming up to 185 DEG C of progress polycondensation reactions, until system acid value is less than 60mgKOH/g；
(4) at 202-205 DEG C, Depressor response to system acid value is less than 40mgKOH/g, cools to 150 DEG C of thinnings, that is, adds
Enter 6700kg styrene, temperature is 70-78 DEG C, is stirred 60-70 minutes, and reaction to system acid value is 18-23mgKOH/g, you can
Terephthalic unsaturated polyester resin is made.
The preparation process of above-mentioned terephthalic unsaturated polyester resin is 25 hours total.
Test data：
Gel time refers to that environment temperature is 25 DEG C, adds 2.5% methyl ethyl ketone peroxide, the examination of 2% cobalt naphthenate solution
It is measured under the conditions of testing.
Claims (9)
1. a kind of method with the Production of Terephthalic Acid terephthalic unsaturated polyester resin that gives up, which is characterized in that including following step
Suddenly：
(1) by useless terephthalic acid (TPA), dihydric alcohol input reaction kettle, it is warming up to 115-125 DEG C；
(2) under nitrogen protection, composite catalyst is added, esterification is carried out at 175-190 DEG C, until system acid value is less than
10mgKOH/g；The composite catalyst is by the mixture of stannous oxide, Dibutyltin oxide and acetate, and dosage is useless pair
The 0.15-0.5wt% of phthalic acid；
(3) when being cooled to 155-165 DEG C, dihydric alcohol, antioxidant, unsaturated dibasic acid/acid anhydrides is added, is warming up to 175-195 DEG C
Polycondensation reaction is carried out, until system acid value is less than 60mgKOH/g；
(4) at 202-205 DEG C, Depressor response to system acid value is less than 40mgKOH/g, cools to 145-155 DEG C of thinning, reacts
It is 18-23mgKOH/g to system acid value, you can terephthalic unsaturated polyester resin is made.
2. according to the method described in claim 1, it is characterized in that, the useless terephthalic acid (TPA) of the step (1) wraps by weight
Include terephthalic acid (TPA) 60-90%, p-methylbenzoic acid 10-20%.
3. according to the method described in claim 1, it is characterized in that, dihydric alcohol is second two in the step (1) and step (3)
One or more of alcohol, diethylene glycol (DEG) and propylene glycol.
4. according to the method described in claim 1, it is characterized in that, acetate is zinc acetate in the step (2).
5. according to the method described in claim 4, it is characterized in that, stannous oxide, two in composite catalyst in the step (2)
The weight ratio of butyl tin oxide and zinc acetate is 0.9-1.1：1.8-2.2：1.
6. according to the method described in claim 1, it is characterized in that, unsaturated dibasic acid/acid anhydrides is along fourth in the step (3)
Enedioic acid acid anhydride and fumaric mixture, the useless terephthalic acid (TPA) and the unsaturated dibasic acid/unsaturated dibasic acid
The weight ratio of acid anhydride is 1: 1.1~1.5.
7. according to the method described in claim 1, it is characterized in that, antioxidant is triphenyl phosphite in the step (3).
8. according to the method described in claim 1, it is characterized in that, in the step (4) thinning method be added styrene,
Temperature is 70-78 DEG C, is stirred 60-70 minutes.
9. terephthalic unsaturated polyester resin prepared by any type preparation method according to claim 1-8, feature
Be, 50 DEG C hereinafter, viscosity be 400-650mPas/25 DEG C, gelling time be 5-10min/25 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810577422.3A CN108623796B (en) | 2018-06-07 | 2018-06-07 | Method for producing p-benzene unsaturated polyester resin by using waste terephthalic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810577422.3A CN108623796B (en) | 2018-06-07 | 2018-06-07 | Method for producing p-benzene unsaturated polyester resin by using waste terephthalic acid |
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| CN108623796A true CN108623796A (en) | 2018-10-09 |
| CN108623796B CN108623796B (en) | 2020-09-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734888A (en) * | 2019-01-28 | 2019-05-10 | 上海炼升化工股份有限公司 | A method of phosphorous-containing polyester polyalcohol is synthesized using PTA residue |
| CN109824877A (en) * | 2019-01-28 | 2019-05-31 | 上海炼升化工股份有限公司 | A method of using PTA residue synthesizing environment-friendly polyester polyol |
| CN111892702A (en) * | 2020-07-31 | 2020-11-06 | 广东百汇达新材料有限公司 | Terephthalic acid type unsaturated polyester resin and preparation method thereof |
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| US6353036B1 (en) * | 1999-07-28 | 2002-03-05 | Dainippon Ink And Chemicals, Inc. | Process for producing unsaturated polyester and unsaturated polyester resin composition |
| CN1631935A (en) * | 2004-11-18 | 2005-06-29 | 华东理工大学华昌聚合物有限公司 | Synthesis of p-phenyl unsaturated polyester resin by using waste polyester material |
| CN1844187A (en) * | 2006-03-23 | 2006-10-11 | 华东理工大学华昌聚合物有限公司 | Process for producing terephthalic unsaturated polyester resin by using terephthalic acid rinsing residue |
| CN102311523A (en) * | 2010-07-02 | 2012-01-11 | 常州市华润复合材料有限公司 | Unsaturated polyester resin for vacuum infusion process and resin composition thereof |
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2018
- 2018-06-07 CN CN201810577422.3A patent/CN108623796B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6353036B1 (en) * | 1999-07-28 | 2002-03-05 | Dainippon Ink And Chemicals, Inc. | Process for producing unsaturated polyester and unsaturated polyester resin composition |
| CN1631935A (en) * | 2004-11-18 | 2005-06-29 | 华东理工大学华昌聚合物有限公司 | Synthesis of p-phenyl unsaturated polyester resin by using waste polyester material |
| CN1844187A (en) * | 2006-03-23 | 2006-10-11 | 华东理工大学华昌聚合物有限公司 | Process for producing terephthalic unsaturated polyester resin by using terephthalic acid rinsing residue |
| CN102311523A (en) * | 2010-07-02 | 2012-01-11 | 常州市华润复合材料有限公司 | Unsaturated polyester resin for vacuum infusion process and resin composition thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734888A (en) * | 2019-01-28 | 2019-05-10 | 上海炼升化工股份有限公司 | A method of phosphorous-containing polyester polyalcohol is synthesized using PTA residue |
| CN109824877A (en) * | 2019-01-28 | 2019-05-31 | 上海炼升化工股份有限公司 | A method of using PTA residue synthesizing environment-friendly polyester polyol |
| CN111892702A (en) * | 2020-07-31 | 2020-11-06 | 广东百汇达新材料有限公司 | Terephthalic acid type unsaturated polyester resin and preparation method thereof |
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Denomination of invention: A method of producing p-benzene unsaturated polyester resin from waste terephthalic acid Effective date of registration: 20220922 Granted publication date: 20200929 Pledgee: Zhejiang Jiashan Rural Commercial Bank Branch Shun Limited by Share Ltd Pledgor: Zhejiang Dongda Resin Technology Co.,Ltd. Registration number: Y2022450000156 |
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