CN109181504A - The excellent polyester resin for powder coating preparation method of weather resistance - Google Patents
The excellent polyester resin for powder coating preparation method of weather resistance Download PDFInfo
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- CN109181504A CN109181504A CN201811079769.1A CN201811079769A CN109181504A CN 109181504 A CN109181504 A CN 109181504A CN 201811079769 A CN201811079769 A CN 201811079769A CN 109181504 A CN109181504 A CN 109181504A
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- polyester resin
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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
- C09D167/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The excellent polyester resin for powder coating preparation method of weather resistance, raw material includes PET textile waste lumps, 1,6- hexylene glycol, 3- methyl-1,5- pentanediol, catalyst, 1,4- cyclohexane cyclohexanedimethanodibasic, polybutylene terephthalate (PBT) and curing accelerator, wherein the mass percent of raw material shared by each component are as follows: PET textile waste lumps 75% ~ 80%；1,6-HD 2% ~ 4%；3- methyl-1,5- pentanediol 2% ~ 4%；Catalyst 0.4% ~ 0.6%；1,4 cyclohexanedicarboxylic acid 7% ~ 9%；Polybutylene terephthalate (PBT) 6% ~ 10%；Curing accelerator 0.5% ~ 0.7%.The present invention uses 1,6 hexylene glycols and 3- methyl-1, and 5 pentanediols enhance the shock resistance of powdery paints, weather-proof and rheological property come PET lumps of degrading；Compared with using M-phthalic acid to block, is blocked using Isosorbide-5-Nitrae-cyclohexane cyclohexanedimethanodibasic, the performances such as hydrolytic stability and the color inhibition of product can be improved.In addition, using PET textile waste lumps as main component, filters pressing processing need to be only carried out to polyester resin product, and realize and make the best use of everything.
Description
Technical field
The present invention relates to polyester resin to prepare technical field, and in particular to a kind of powdery paints that weather resistance is excellent use is poly-
Ester process for preparing resins.
Background technique
Polyester resin for powder coating is an important component of thermosetting powder coating, is mainly being urged by Organic Alcohol and acid
Esterification, polycondensation form under the action of agent, are divided into epoxy/polyester mixed type carboxyl end group saturated polyester resin and isocyanuric acid three
Ethylene oxidic ester (TGIC) or beta-hydroxy alkylamide (HAA) curing type carboxyl end group pure polyester resin two major classes are other.
Currently, polyethylene terephthalate (PET) is mainly for the production of fiber, polyester bottles and film etc..Gather to benzene
The source of naphthalate (PET) waste material lumps is mainly the dead meal generated in process of textile production.Chinese patent
200910185547.2 disclose it is a kind of using beta-hydroxy alkylamide as the polyester resin for powder coating of curing agent and its preparation side
Method, the polyester resin for powder coating, including following components and content: acid/alcohol molar ratio is 1.01- in polyester resin
1.06/1;Wherein the content of each alcohol accounts for the percentage of total alcohol molal quantity respectively are as follows: neopentyl glycol 85-99.5mol%；1,6- oneself
Glycol 0-10mol%；2,2,4- trimethyl -1,3- pentanediol list isobutyl ester 0.5-5mol%；Wherein the content of each acid accounts for respectively
The percentage of total acid molal quantity are as follows: terephthalic acid (TPA) 50-80mol%；M-phthalic acid 20-40mol%;Adipic acid 0-10mol%；
Chinese patent 201310602513.5 discloses a kind of method that continuity method prepares powdery paints thermosetting property saturated polyester resin,
It the steps include: in the presence of a catalyst, the dihydric alcohol that polyethylene terephthalate is higher than ethylene glycol with boiling point carries out alcoholysis
Reaction displaces ethylene glycol, then through esterification, polymerization reaction, is eventually adding trimellitic anhydride, curing accelerator adjustment reaction
It obtains powdery paints epoxy/polyester mixed polyester resin or curing accelerator adjustment is added and react to obtain the pure polyester of powdery paints
Type polyester resin；Chinese patent 201610990497.5 discloses a kind of outdoor polyester resin for powder coating.Including with the following group
Point and each component parts by weight are as follows: 30 40 parts of neopentyl glycol, 12 parts of trimethylolpropane, 35 45 parts of terephthalic acid (TPA),
7 11 parts of phthalic acid, 13 parts of adipic acid, 0.5 1 parts of Mono-n-butyltin, 12 parts of triphenylphosphine.
With the continuous growth of textile fabric consumption figure, PET textile waste lumps is also increasingly increasing.Reinforce PET weaving
The recycling of waste material lumps and synthetic powder coating polyester resin, it is emerging to be that one at low cost, high efficiency, resource are sufficient
Industrial project improves the comprehensive utilization ratio of resource, to the target of sustainable development of realization " resource regeneration, circular economy ", has
Very important meaning, have broad prospects.In order to reduce energy consumption, sufficiently show PET lumps textile waste added value, this
Invention utilizes PET textile waste lumps, 1,6- hexylene glycol, 3- methyl-1, then the elder generation such as 5- pentanediol degradation reaction vacuumizes contracting
It is poly-, at the end of Isosorbide-5-Nitrae-cyclohexane cyclohexanedimethanodibasic be added carry out end capping reaction, polybutylene terephthalate (PBT) is added at the same time
(PBT) weatherability and rheological characteristic for increasing naval stores, are eventually adding curing accelerator, prepare 30~37 mg kOH/ of acid value
G, the family of the performances such as 30~40 mg kOH/g of hydroxyl value and shock resistance, color inhibition, weather-proof and rheology that powdery paints can be significantly improved
Outer polyester resin for powder coating.So far do not have while using the document of such polyester resin for powder coating of these Material synthesis
And patent report.
Summary of the invention
The present invention is in view of the deficienciess of the prior art, provide a kind of powdery paints that weather resistance is excellent with polyester tree
Rouge preparation method.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of polyester resin for powder coating preparation method that weather resistance is excellent, raw material include PET textile waste lumps, 1,6-
Hexylene glycol, 3- methyl-1,5- pentanediol, catalyst, 1,4 cyclohexanedicarboxylic acid, polybutylene terephthalate (PBT) and solidification promote
Into agent, wherein the mass percent of raw material shared by each component are as follows: PET textile waste lumps 75% ~ 80%；1,6-HD 2% ~
4%；3- methyl-1,5- pentanediol 2% ~ 4%；Catalyst 0.4% ~ 0.6%；1,4 cyclohexanedicarboxylic acid 7% ~ 9%；Poly terephthalic acid
Butanediol ester 6% ~ 10%；Curing accelerator 0.5% ~ 0.7%, specific preparation method step be by PET textile waste lumps, 1,6- oneself
Glycol, 3- methyl-1,5- pentanediol and catalyst etc. are put into 1# reaction kettle；Displacement nitrogen simultaneously seals；Be rapidly heated to 265 ±
2 DEG C, keep the temperature 8h；200 DEG C are cooled to, normal pressure is then down to, filters pressing simultaneously moves into 2# reaction kettle, 1 then is put into toward 2# reaction kettle,
4- cyclohexane cyclohexanedimethanodibasic and polybutylene terephthalate (PBT), the 2# reaction kettle that slowly heats up in 2h continue anti-to after 245 ± 2 DEG C
1h or so is answered, starts to vacuumize, 0.095~0.1MPa of vacuum degree is down to 30~37 mg KOH/g, hydroxyl value drop to product acid value
Stop reacting and cooling down when to 30~40 mg kOH/g；Curing accelerator is added at 215~220 DEG C, is pressed after stirring 15min
Filter, cooling, broken and be sieved, polyester resin for powder coating partial size≤0.4 cm excellent to get weather resistance.
Above-mentioned catalyst is magnesium acetate；Curing accelerator is three pungent decyl tertiary amines.
The mass percent of raw material shared by above-mentioned raw materials ingredient are as follows: PET textile waste lumps 75%；1,6-HD 4%；3-
Methyl-1,5- pentanediol 2.9%；Magnesium acetate 0.4%；1,4 cyclohexanedicarboxylic acid 9%；Polybutylene terephthalate (PBT) 8%；Three is pungent
Decyl tertiary amine 0.7%.
The broken partial size of above-mentioned PET textile waste lumps is less than or equal to 1cm.
Above-mentioned polybutylene terephthalate (PBT) is polyester made of terephthalic acid (TPA) and 1,4-butanediol polycondensation, and its glass
Glass temperature is 30 ± 2 DEG C.
The present invention uses 1,6 hexylene glycols and 3- methyl-1, and 5 pentanediols enhance the anti-of powdery paints come PET lumps of degrading
Impact, weather-proof and rheological property；Compared with using M-phthalic acid to block, blocked using Isosorbide-5-Nitrae-cyclohexane cyclohexanedimethanodibasic, it can
Improve the performances such as hydrolytic stability and the color inhibition of product.In addition, using PET textile waste lumps as main component, only
Filters pressing processing need to be carried out to polyester resin product, and is realized and made the best use of everything.
The present invention is a kind of polyester resin for powder coating that weather resistance is excellent, compared with the polyester resin of same type,
It is used for outdoor powdery paints not only and can increase coating shock resistance, while can also improve the yellowing resistance of coating, weatherability.
In addition, the present invention does not use the tin catalyst of some country's disablings, it is convenient for products export.Made using PET textile waste lumps
For primary raw material, it can be achieved that its Environmentally-frielow-energy-consumptipolycarboxylic low-energy-consumptipolycarboxylic recycle value.
Detailed description of the invention
Fig. 1 is the process flow chart of preparation method of the present invention.
Specific embodiment
Example 1
A kind of polyester resin for powder coating preparation method that weather resistance is excellent, according to mass fraction meter, component is as follows:
PET textile waste lumps (partial size≤1cm after broken) 75Kg
1,6-HD 4Kg
3- methyl-1,5- pentanediol 2.9Kg
Catalyst0.4Kg
1,4 cyclohexanedicarboxylic acid 9Kg
Polybutylene terephthalate (PBT) 8Kg
Curing accelerator 0.7Kg
By PET textile waste lumps, 1,6-HD, 3- methyl-1,5- pentanediol and catalyst etc. are put into 1# reaction kettle；It sets
It changes nitrogen and seals；It is rapidly heated to 265 ± 2 DEG C, keeps the temperature 8h；200 DEG C are cooled to, normal pressure is then down to, filters pressing simultaneously moves into
2# reaction kettle then puts into Isosorbide-5-Nitrae-cyclohexane cyclohexanedimethanodibasic and polybutylene terephthalate (PBT) toward 2# reaction kettle.It is slowly risen in 2h
Warm 2# reaction kettle starts to vacuumize (vacuum degree 0.095MPa), to product acid value to after 245 ± 2 DEG C, the reaction was continued 1h or so
It is down to 30~37mg KOH/g, stops when hydroxyl value is down to 30~40mg kOH/g reacting and cooling down；It was added for the three pungent last of the ten Heavenly stems at 215 DEG C
Alkyl tertiary amine stirs filters pressing, cooling, broken and (partial size≤0.4 cm) powder excellent to get weather resistance that be sieved after 15min
Coating polyester resin, through detecting acid value 37mgKOH/g, hydroxyl value 38mgKOH/g, cps(200 DEG C of viscosity 3120).
Example 2
A kind of polyester resin for powder coating preparation method that weather resistance is excellent, according to mass fraction meter, component is as follows:
PET textile waste lumps (partial size≤1cm after broken) 75Kg
1,6-HD 2Kg
3- methyl-1,5- pentanediol 4Kg
Catalyst 0.4Kg
1,4 cyclohexanedicarboxylic acid 8Kg
10 Kg of polybutylene terephthalate (PBT)
Curing accelerator 0.6Kg
By PET textile waste lumps, 1,6-HD, 3- methyl-1,5- pentanediol and catalyst etc. are put into 1# reaction kettle；It sets
It changes nitrogen and seals；It is rapidly heated to 265 ± 2 DEG C, keeps the temperature 8h；200 DEG C are cooled to, normal pressure is then down to, filters pressing simultaneously moves into
2# reaction kettle then puts into Isosorbide-5-Nitrae-cyclohexane cyclohexanedimethanodibasic and polybutylene terephthalate (PBT) toward 2# reaction kettle.It is slowly risen in 2h
Warm 2# reaction kettle starts to vacuumize (vacuum degree 0.1MPa), drop to product acid value to after 245 ± 2 DEG C, the reaction was continued 1h or so
Stop reacting and cooling down when being down to 30~40 mg kOH/g to 30~37 mg KOH/g, hydroxyl value；It was added for the three pungent last of the ten Heavenly stems at 215 DEG C
Alkyl tertiary amine stirs filters pressing, cooling, broken and (partial size≤0.4 cm) powder excellent to get weather resistance that be sieved after 15min
Coating polyester resin, through detecting acid value 35mgKOH/g, hydroxyl value 30mgKOH/g, cps(200 DEG C of viscosity 2950).
Example 3
A kind of polyester resin for powder coating preparation method that weather resistance is excellent, for raw material according to mass fraction meter, component is as follows:
PET textile waste lumps (partial size≤1cm after broken) 77Kg
1,6-HD 4Kg
3- methyl-1,5- pentanediol 2.9Kg
Catalyst 0.6Kg
1,4 cyclohexanedicarboxylic acid 8Kg
7 Kg of polybutylene terephthalate (PBT)
Curing accelerator 0.6Kg
By PET textile waste lumps, 1,6-HD, 3- methyl-1,5- pentanediol and catalyst etc. are put into 1# reaction kettle；It sets
It changes nitrogen and seals；It is rapidly heated to 265 ± 2 DEG C, keeps the temperature 8h；200 DEG C are cooled to, normal pressure is then down to, filters pressing simultaneously moves into
2# reaction kettle then puts into Isosorbide-5-Nitrae-cyclohexane cyclohexanedimethanodibasic and polybutylene terephthalate (PBT) toward 2# reaction kettle.It is slowly risen in 2h
Warm 2# reaction kettle starts to vacuumize (vacuum degree 0.1MPa), drop to product acid value to after 245 ± 2 DEG C, the reaction was continued 1h or so
Stop reacting and cooling down when being down to 30~40 mg kOH/g to 30~37 mg KOH/g, hydroxyl value；It was added for the three pungent last of the ten Heavenly stems at 215 DEG C
Alkyl tertiary amine stirs filters pressing, cooling, broken and (partial size≤0.4 cm) powder excellent to get weather resistance that be sieved after 15min
Coating polyester resin, through detecting acid value 36mgKOH/g, hydroxyl value 40mgKOH/g, cps(200 DEG C of viscosity 3300).
Example 4
A kind of polyester resin for powder coating preparation method that weather resistance is excellent, for raw material according to mass fraction meter, component is as follows:
PET textile waste lumps (partial size≤1cm after broken) 77Kg
1,6-HD 2Kg
3- methyl-1,5- pentanediol 4Kg
Catalyst 0.5Kg
1,4 cyclohexanedicarboxylic acid 8Kg
Polybutylene terephthalate (PBT) 8Kg
Curing accelerator 0.5Kg
By PET textile waste lumps, 1,6-HD, 3- methyl-1,5- pentanediol and catalyst etc. are put into 1# reaction kettle；It sets
It changes nitrogen and seals；It is rapidly heated to 265 ± 2 DEG C, keeps the temperature 8h；200 DEG C are cooled to, normal pressure is then down to, filters pressing simultaneously moves into
2# reaction kettle then puts into Isosorbide-5-Nitrae-cyclohexane cyclohexanedimethanodibasic and polybutylene terephthalate (PBT) toward 2# reaction kettle.It is slowly risen in 2h
Warm 2# reaction kettle starts to vacuumize (vacuum degree 0.95MPa), drop to product acid value to after 245 ± 2 DEG C, the reaction was continued 1h or so
Stop reacting and cooling down when being down to 30~40mg kOH/g to 30~37mg KOH/g, hydroxyl value；Three pungent decane are added at 220 DEG C
Base tertiary amine stirs filters pressing, cooling, broken and (partial size≤0.4 cm) powder painting excellent to get weather resistance of being sieved after 15min
Material polyester resin, through detecting acid value 34mgKOH/g, hydroxyl value 31mgKOH/g, cps(200 DEG C of viscosity 3070).
Example 5
A kind of polyester resin for powder coating preparation method that weather resistance is excellent, for raw material according to mass fraction meter, component is as follows:
PET textile waste lumps (partial size≤1 cm after broken) 80 Kg
4 Kg of 1,6-HD
3- methyl-1,2 Kg of 5- pentanediol
0.5 Kg of catalyst
7 Kg of 1,4 cyclohexanedicarboxylic acid
6 Kg of polybutylene terephthalate (PBT)
0.5 Kg of curing accelerator
By PET textile waste lumps, 1,6-HD, 3- methyl-1,5- pentanediol and catalyst etc. are put into 1# reaction kettle；It sets
It changes nitrogen and seals；It is rapidly heated to 265 ± 2 DEG C, keeps the temperature 8h；200 DEG C are cooled to, normal pressure is then down to, filters pressing simultaneously moves into
2# reaction kettle then puts into Isosorbide-5-Nitrae-cyclohexane cyclohexanedimethanodibasic and polybutylene terephthalate (PBT) toward 2# reaction kettle.It is slowly risen in 2h
Warm 2# reaction kettle starts to vacuumize (vacuum degree 0.1MPa), drop to product acid value to after 245 ± 2 DEG C, the reaction was continued 1h or so
Stop reacting and cooling down when being down to 30~40 mg kOH/g to 30~37 mg KOH/g, hydroxyl value；It was added for the three pungent last of the ten Heavenly stems at 220 DEG C
Alkyl tertiary amine stirs filters pressing, cooling, broken and (partial size≤0.4 cm) powder excellent to get weather resistance that be sieved after 15min
Coating polyester resin, through detecting 32.5 mg KOH/g of acid value, 32 mg KOH/g of hydroxyl value, cps(200 DEG C of viscosity 3700).
Formula design of the product of above embodiments 1~5 in powdery paints: embodiment product 642g, TGIC48g, titanium
White powder 190g, barium sulfate 500g, levelling agent 13g, optical brightener 12.5g, styrax 5g；It is uniformly mixed, twin-screw extrusion, powder
Broken, the sieving of 200 mesh, electrostatic spraying is on phosphatization template and lacquer painting plate is made in the techniques such as 180 DEG C of baking 15min；Through detecting,
Corresponding performance test [national chemical industry standard " thermosetting powder coating " HG/T2006-2006] is as shown in table 1.This
Outside, after resistance to thermal degradation is by the baking load of 150 DEG C of at least 2 hours recirculated hot airs, redeterminate remaining gloss and
The gloss measured when beginning calculates gloss loss, and is wiped with black cotton, to observe the picking state of coating surface.By table 1
As can be seen that application performance of the product of the synthesis of embodiment 1 in powdery paints is relatively preferable, for the preferential formula of the present invention.
The corresponding application performance in powdery paints with the product of Examples 1 to 5 of table 1
Claims (5)
1. a kind of polyester resin for powder coating preparation method that weather resistance is excellent, it is characterized in that raw material includes PET textile waste
Slurry block, 1,6-HD, 3- methyl-1,5- pentanediol, catalyst, 1,4 cyclohexanedicarboxylic acid, poly terephthalic acid fourth two
Alcohol ester and curing accelerator, wherein the mass percent of raw material shared by each component are as follows: PET textile waste lumps 75% ~ 80%；1,
6- hexylene glycol 2% ~ 4%；3- methyl-1,5- pentanediol 2% ~ 4%；Catalyst 0.4% ~ 0.6%；1,4 cyclohexanedicarboxylic acid 7% ~ 9%；It is poly-
Mutual-phenenyl two acid bromide two alcohol ester 6% ~ 10%；Curing accelerator 0.5% ~ 0.7%, specific preparation method step are by PET textile waste
Lumps, 1,6-HD, 3- methyl-1,5- pentanediol and catalyst etc. are put into 1# reaction kettle；Displacement nitrogen simultaneously seals；Quickly
265 ± 2 DEG C are warming up to, 8h is kept the temperature；200 DEG C are cooled to, is then down to normal pressure, filters pressing simultaneously moves into 2# reaction kettle, then toward 2#
Reaction kettle puts into Isosorbide-5-Nitrae-cyclohexane cyclohexanedimethanodibasic and polybutylene terephthalate (PBT), and the 2# reaction kettle that slowly heats up in 2h is to 245 ± 2
After DEG C, the reaction was continued 1h or so starts to vacuumize, 0.095~0.1MPa of vacuum degree, is down to 30~37 mg to product acid value
Stop reacting and cooling down when KOH/g, hydroxyl value are down to 30~40 mg kOH/g；Curing accelerator is added at 215~220 DEG C, stirs
Mix filters pressing after 15min, cooling, broken and be sieved, partial size≤0.4 cm is to get the excellent powdery paints of weather resistance with polyester tree
Rouge.
2. the excellent polyester resin for powder coating preparation method of weather resistance according to claim 1, it is characterized in that urging
Agent is magnesium acetate；Curing accelerator is three pungent decyl tertiary amines.
3. the excellent polyester resin for powder coating preparation method of weather resistance according to claims 1 and 2, it is characterized in that
The mass percent of raw material shared by material composition are as follows: PET textile waste lumps 75%；1,6-HD 4%；3- methyl-1,5- penta
Glycol 2.9%；Magnesium acetate 0.4%；1,4 cyclohexanedicarboxylic acid 9%；Polybutylene terephthalate (PBT) 8%；Three pungent decyl tertiary amines
0.7%。
4. the excellent polyester resin for powder coating preparation method of weather resistance according to claim 1, it is characterized in that PET
The broken partial size of textile waste lumps is less than or equal to 1cm.
5. the excellent polyester resin for powder coating preparation method of weather resistance according to claim 1, it is characterized in that poly-
Mutual-phenenyl two acid bromide two alcohol ester is polyester made of terephthalic acid (TPA) and 1,4-butanediol polycondensation, and its glass transition temperature be 30 ±
2℃。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811079769.1A CN109181504A (en) | 2018-09-17 | 2018-09-17 | The excellent polyester resin for powder coating preparation method of weather resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811079769.1A CN109181504A (en) | 2018-09-17 | 2018-09-17 | The excellent polyester resin for powder coating preparation method of weather resistance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110437432A (en) * | 2019-08-20 | 2019-11-12 | 德州名将工贸有限公司 | A kind of preparation method of hybrid thermosetting polyester resin for powder coating |
| CN110511361A (en) * | 2019-08-20 | 2019-11-29 | 德州名将工贸有限公司 | A kind of preparation method of thermosetting powder coating polyester resin |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101736189B1 (en) * | 2016-05-30 | 2017-05-30 | 주식회사 삼양사 | Polyester resin comprisng biomass-derived oligomer and method for preparing the same, and powder coating composition comprising the resin |
| CN107513338A (en) * | 2017-08-16 | 2017-12-26 | 江苏宝田新型材料科技股份有限公司 | A kind of 70/30 epoxy polyester mixed type powder paint polyester resin and preparation method thereof |
-
2018
- 2018-09-17 CN CN201811079769.1A patent/CN109181504A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101736189B1 (en) * | 2016-05-30 | 2017-05-30 | 주식회사 삼양사 | Polyester resin comprisng biomass-derived oligomer and method for preparing the same, and powder coating composition comprising the resin |
| CN107513338A (en) * | 2017-08-16 | 2017-12-26 | 江苏宝田新型材料科技股份有限公司 | A kind of 70/30 epoxy polyester mixed type powder paint polyester resin and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110437432A (en) * | 2019-08-20 | 2019-11-12 | 德州名将工贸有限公司 | A kind of preparation method of hybrid thermosetting polyester resin for powder coating |
| CN110511361A (en) * | 2019-08-20 | 2019-11-29 | 德州名将工贸有限公司 | A kind of preparation method of thermosetting powder coating polyester resin |
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Application publication date: 20190111 |