CN111825835A - Water-based polyester resin and preparation method thereof - Google Patents
Water-based polyester resin and preparation method thereof Download PDFInfo
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- CN111825835A CN111825835A CN202010709198.6A CN202010709198A CN111825835A CN 111825835 A CN111825835 A CN 111825835A CN 202010709198 A CN202010709198 A CN 202010709198A CN 111825835 A CN111825835 A CN 111825835A
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- parts
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- polyester resin
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- triethylamine
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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
-
- 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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a water-based polyester resin which comprises the following components in parts by weight: 25-30 parts of 95 glycerol, 5-8 parts of diethylene glycol, 11-13 parts of neopentyl glycol, 9-12 parts of glacial acetic acid, 0.15-0.2 part of hypophosphorous acid, 16-20 parts of adipic acid, 38-42 parts of terephthalic acid, 5-7 parts of maleic anhydride, 23-26 parts of generated esterified water, 17-18 parts of ethylene glycol monobutyl ether and 7-8 parts of triethylamine. The waterborne polyester resin provided by the invention meets the requirement of environmental protection performance, realizes the functions of no cracking when being coated on an aluminum foil during folding and high hardness, has strong functionality, and can be widely applied to the technical field of baking finish.
Description
Technical Field
The invention relates to the technical field of baking varnish, in particular to water-based polyester resin and a preparation method thereof, and more particularly relates to amino baking varnish prepared from amino resin and 303 or 325 according to a certain proportion, which has better performance, high hardness and environmental protection performance far lower than the standard of national standard 1 liter paint VOC 200g, and the amino baking varnish is not cracked when being coated on an aluminum foil.
Background
With the enhancement of environmental awareness and the deepening of environmental technical requirements, higher requirements are also made on the manufacturing process and components of the polyester resin. At present, most of the amino baking paints are still in a solvent type, few of the water-based amino baking paints are still high in VOC, and the paint film performance is far inferior to that of the solvent-based baking paints.
Therefore, a waterborne polyester resin which has better performance than solvent-based amino baking paint and has VOC far lower than national standard in baking paint prepared by the waterborne polyester resin is needed to be researched.
Disclosure of Invention
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the water-based polyester resin comprises the following components in parts by weight: 25-30 parts of 95 glycerol, 5-8 parts of diethylene glycol, 11-13 parts of neopentyl glycol, 9-12 parts of glacial acetic acid, 0.15-0.2 part of hypophosphorous acid, 16-20 parts of adipic acid, 38-42 parts of terephthalic acid, 5-7 parts of maleic anhydride, 23-26 parts of generated esterified water, 17-18 parts of ethylene glycol monobutyl ether and 7-8 parts of triethylamine.
Further, the feed comprises the following components in parts by weight: 25 parts of 95 glycerol, 5 parts of diethylene glycol, 11 parts of neopentyl glycol, 9 parts of glacial acetic acid, 0.15 part of hypophosphorous acid, 16 parts of adipic acid, 38 parts of terephthalic acid, 5 parts of maleic anhydride, 23 parts of generated esterified water, 17 parts of ethylene glycol monobutyl ether and 7 parts of triethylamine.
Further, the feed comprises the following components in parts by weight: 30 parts of 95 glycerol, 8 parts of diethylene glycol, 13 parts of neopentyl glycol, 12 parts of glacial acetic acid, 0.2 part of hypophosphorous acid, 20 parts of adipic acid, 42 parts of terephthalic acid, 7 parts of maleic anhydride, 26 parts of generated esterified water, 18 parts of ethylene glycol monobutyl ether and 8 parts of triethylamine.
Further, the feed comprises the following components in parts by weight: 22.5 parts of 95 glycerol, 6.5 parts of diethylene glycol, 12 parts of neopentyl glycol, 10.5 parts of glacial acetic acid, 0.175 part of hypophosphorous acid, 18 parts of adipic acid, 40 parts of terephthalic acid, 6 parts of maleic anhydride, 24.5 parts of generated esterified water, 12.5 parts of ethylene glycol monobutyl ether and 7.5 parts of triethylamine.
The invention also provides a technical scheme that:
closing a discharge valve on a reaction kettle, adding a certain amount of 95 glycerol, hypophosphorous acid and glacial acetic acid into the reaction kettle, stirring, then adding terephthalic acid, heating to 140 ℃, keeping the temperature for one hour, heating to 180 ℃ again, and stopping heating; then feeding diethylene glycol, neopentyl glycol and adipic acid, and heating to 240 ℃; measuring the acid value after 1.5 hours, and cooling to 160 ℃ when the acid value is less than 20 KOH/(mg/g); then delivering maleic anhydride, keeping the temperature for 30 minutes, cooling to 120 ℃, adding butyl ether, delivering triethylamine when the temperature is reduced to 80 ℃, and filtering and packaging when the temperature is reduced to 60 ℃.
Furthermore, 100 parts of the polyester resin has an acid value of 43KOH/(mg/g), 17.24 parts of ethylene glycol monobutyl ether and 7.76 parts of triethylamine serving as a neutralizing agent, so that 125 parts of 80% solid content polyester resin is obtained.
After the components and the preparation method are adopted, the invention has the following advantages:
the waterborne polyester resin provided by the invention has excellent environmental protection performance, can meet the national environmental protection index requirements, has a wide application range, can be applied to aluminum foils to achieve the purpose of improving the hardness, and can play a role in preventing cracking.
Detailed Description
The present invention is described in further detail below.
In order to further improve the environmental protection index of the baking varnish, the invention provides the water-based polyester resin with better performance and higher environmental protection index, and the VOC gas contained in the baking varnish prepared by the water-based polyester resin is less than the national standard of 200g/kg, so that the water-based polyester resin can be more suitable for different fields and different occasions.
The technical scheme provided by the invention is as follows:
the water-based polyester resin comprises the following components in parts by weight: 25-30 parts of 95 glycerol, 5-8 parts of diethylene glycol, 11-13 parts of neopentyl glycol, 9-12 parts of glacial acetic acid, 0.15-0.2 part of hypophosphorous acid, 16-20 parts of adipic acid, 38-42 parts of terephthalic acid, 5-7 parts of maleic anhydride, 23-26 parts of generated esterified water, 17-18 parts of ethylene glycol monobutyl ether and 7-8 parts of triethylamine.
In the production of polyester resins, the resulting esterified water is neutralized with lime and then used in the subsequent lacquering.
Closing a discharge valve on the reaction kettle, adding a certain amount of 95 glycerol, hypophosphorous acid and glacial acetic acid into the reaction kettle, stirring, then adding terephthalic acid, heating to 140 ℃, keeping the temperature for one hour, heating to 180 ℃ again, and stopping heating; then feeding diethylene glycol, neopentyl glycol and adipic acid, and heating to 240 ℃; measuring the acid value after 1.5 hours, and cooling to 160 ℃ when the acid value is less than 20 KOH/(mg/g); then delivering maleic anhydride, keeping the temperature for 30 minutes, cooling to 120 ℃, adding butyl ether, delivering triethylamine when the temperature is reduced to 80 ℃, and filtering and packaging when the temperature is reduced to 60 ℃.
17.5 parts of ethylene glycol monobutyl ether and 7.5 parts of triethylamine.
Example one
The water-based polyester resin comprises the following components in parts by weight: 25 parts of 95 glycerol, 5 parts of diethylene glycol, 11 parts of neopentyl glycol, 9 parts of glacial acetic acid, 0.15 part of hypophosphorous acid, 16 parts of adipic acid, 38 parts of terephthalic acid, 5 parts of maleic anhydride, 23 parts of generated esterified water, 17 parts of ethylene glycol monobutyl ether and 7 parts of triethylamine.
Example two
The water-based polyester resin comprises the following components in parts by weight: 30 parts of 95 glycerol, 8 parts of diethylene glycol, 13 parts of neopentyl glycol, 12 parts of glacial acetic acid, 0.2 part of hypophosphorous acid, 20 parts of adipic acid, 42 parts of terephthalic acid, 7 parts of maleic anhydride, 26 parts of generated esterified water, 18 parts of ethylene glycol monobutyl ether and 8 parts of triethylamine.
EXAMPLE III
The water-based polyester resin comprises the following components in parts by weight: 22.5 parts of 95 glycerol, 6.5 parts of diethylene glycol, 12 parts of neopentyl glycol, 10.5 parts of glacial acetic acid, 0.175 part of hypophosphorous acid, 18 parts of adipic acid, 40 parts of terephthalic acid, 6 parts of maleic anhydride, 24.5 parts of generated esterified water, 12.5 parts of ethylene glycol monobutyl ether and 7.5 parts of triethylamine.
The manufacturing methods of the first to third embodiments all adopt the above manufacturing method.
Example four
In this example, the VOC content of the baking varnish made of the aqueous polyester resin of the present invention was tested. The detection proves that the VOC content index of the baking varnish prepared from the waterborne polyester resin provided by the invention is less than 200g/kg of national standard, specifically 78g/kg, and meets the environmental protection requirement.
35 parts of the paint, 7.8 parts of 5717 amino resin and 57.2 parts of water from Sanmu corporation are uniformly stirred, sprayed on an iron plate or an aluminum foil (an object to be coated), and baked for 15 minutes at 130 ℃ to obtain a bright paint film, the hardness of the paint film is 2H, the T bend is high, and 78g of 1 kilogram of baking paint VOC is only obtained.
Therefore, the waterborne polyester resin provided by the invention can meet the national environmental protection requirement, and can be coated on an aluminum foil, so that the requirement on hardness is realized, specifically, the hardness can reach more than 2H, and the waterborne polyester resin has great progress in the field of amino baking finish.
Since many possible embodiments may be made of the invention without departing from the scope thereof, it is to be understood that all matter herein set forth in the examples is to be interpreted as illustrative and not in a limiting sense.
Claims (6)
1. The water-based polyester resin is characterized by comprising the following components in parts by weight: 25-30 parts of 95 glycerol, 5-8 parts of diethylene glycol, 11-13 parts of neopentyl glycol, 9-12 parts of glacial acetic acid, 0.15-0.2 part of hypophosphorous acid, 16-20 parts of adipic acid, 38-42 parts of terephthalic acid, 5-7 parts of maleic anhydride, 23-26 parts of generated esterified water, 17-18 parts of ethylene glycol monobutyl ether and 7-8 parts of triethylamine.
2. The waterborne polyester resin of claim 1, comprising the following components in parts by weight: 25 parts of 95 glycerol, 5 parts of diethylene glycol, 11 parts of neopentyl glycol, 9 parts of glacial acetic acid, 0.15 part of hypophosphorous acid, 16 parts of adipic acid, 38 parts of terephthalic acid, 5 parts of maleic anhydride, 23 parts of generated esterified water, 17 parts of ethylene glycol monobutyl ether and 7 parts of triethylamine.
3. The waterborne polyester resin of claim 1, comprising the following components in parts by weight: 30 parts of 95 glycerol, 8 parts of diethylene glycol, 13 parts of neopentyl glycol, 12 parts of glacial acetic acid, 0.2 part of hypophosphorous acid, 20 parts of adipic acid, 42 parts of terephthalic acid, 7 parts of maleic anhydride, 26 parts of generated esterified water, 18 parts of ethylene glycol monobutyl ether and 8 parts of triethylamine.
4. The waterborne polyester resin of claim 1, comprising the following components in parts by weight: 22.5 parts of 95 glycerol, 6.5 parts of diethylene glycol, 12 parts of neopentyl glycol, 10.5 parts of glacial acetic acid, 0.175 part of hypophosphorous acid, 18 parts of adipic acid, 40 parts of terephthalic acid, 6 parts of maleic anhydride, 24.5 parts of generated esterified water, 12.5 parts of ethylene glycol monobutyl ether and 7.5 parts of triethylamine.
5. The method for preparing the water-based polyester resin as claimed in claim 1, wherein a discharge valve on a reaction kettle is closed, a certain amount of 95 glycerol, hypophosphorous acid and glacial acetic acid are put into the reaction kettle for stirring, then terephthalic acid is put into the reaction kettle, the temperature is raised to 140 ℃, the temperature is kept for one hour, the temperature is raised to 180 ℃ again, and the temperature rise is stopped; then feeding diethylene glycol, neopentyl glycol and adipic acid, and heating to 240 ℃; measuring the acid value after 1.5 hours, and cooling to 160 ℃ when the acid value is less than 20 KOH/(mg/g); then delivering maleic anhydride, keeping the temperature for 30 minutes, cooling to 120 ℃, adding butyl ether, delivering triethylamine when the temperature is reduced to 80 ℃, and filtering and packaging when the temperature is reduced to 60 ℃.
6. The method of claim 5, wherein 100 parts of the polyester resin has an acid value of 43KOH/(mg/g), 17.24 parts of ethylene glycol monobutyl ether, and 7.76 parts of triethylamine as a neutralizing agent, thereby obtaining 125 parts of 80% solid content polyester resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010709198.6A CN111825835A (en) | 2020-07-22 | 2020-07-22 | Water-based polyester resin and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010709198.6A CN111825835A (en) | 2020-07-22 | 2020-07-22 | Water-based polyester resin and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111825835A true CN111825835A (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010709198.6A Pending CN111825835A (en) | 2020-07-22 | 2020-07-22 | Water-based polyester resin and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103865050A (en) * | 2014-03-10 | 2014-06-18 | 广东银洋树脂有限公司 | Preparation method of phenolic resin modified water-based saturated polyester resin |
| CN105694012A (en) * | 2014-11-27 | 2016-06-22 | 合众（佛山）化工有限公司 | Preparation method of high-performance waterborne polyester resin |
| CN109705279A (en) * | 2018-12-25 | 2019-05-03 | 巨石集团有限公司 | A kind of glycerin modification unsaturated polyester resin and preparation method thereof |
-
2020
- 2020-07-22 CN CN202010709198.6A patent/CN111825835A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103865050A (en) * | 2014-03-10 | 2014-06-18 | 广东银洋树脂有限公司 | Preparation method of phenolic resin modified water-based saturated polyester resin |
| CN105694012A (en) * | 2014-11-27 | 2016-06-22 | 合众（佛山）化工有限公司 | Preparation method of high-performance waterborne polyester resin |
| CN109705279A (en) * | 2018-12-25 | 2019-05-03 | 巨石集团有限公司 | A kind of glycerin modification unsaturated polyester resin and preparation method thereof |
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Application publication date: 20201027 |