CN107312373A - A kind of general delustering agent of powdery paints and preparation method thereof - Google Patents
A kind of general delustering agent of powdery paints and preparation method thereof Download PDFInfo
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- CN107312373A CN107312373A CN201710713727.8A CN201710713727A CN107312373A CN 107312373 A CN107312373 A CN 107312373A CN 201710713727 A CN201710713727 A CN 201710713727A CN 107312373 A CN107312373 A CN 107312373A
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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
- 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
- C09D5/033—Powdery paints characterised by the additives
-
- 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
- C08G63/54—Polycarboxylic acids or polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation the acids or hydroxy compounds containing carbocyclic rings
-
- 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
- C08G63/87—Non-metals or inter-compounds thereof
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- Chemical Kinetics & Catalysis (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)
- Polyesters Or Polycarbonates (AREA)
Abstract
The present invention provides a kind of general delustering agent of powdery paints and preparation method thereof, for containing following polymerized unit (A), (B), (C), (D) the unsaturated polyester resin containing carboxylic side-chain：The polymerized unit (A), (B), (C), the quantity of (D) are respectively x, y, z, n, and the x, y, z, n are 50 1000 integer；The x, y, z, n quantity ratio are 1:1‑15:5‑20:0.5‑5；Group R in the polymerized unit (A), (B), (C), (D)1、R3、R5For C1‑C6Alkyl, R2、R4For hydrogen or C2‑C15Alkyl, R6、R9The repetition being combined for the polymerized unit (A), (B) and (C), R7、R8For hydrogen or carboxyl.The product of the present invention can realize the delustering agent of extinction effect in all powder coating, fill up current industry blank product, and simple production process, and reaction condition is gentle, and raw material is easy to get, and production cost is relatively low, to equipment without particular/special requirement.
Description
Technical field
The present invention relates to coating additive manufacturing technology field, and in particular to a kind of general delustering agent of powdery paints and its system
Preparation Method.
Background technology
Powdery paints is an important component of coating, and it is presented with solvent-free volatilization, more preferable weather resistance
The value more excellent than conventional solvent coating, the trend for complying with the epoch flourishes.Powdery paints is divided into epoxy, epoxy polyester again
With the powder coating systems such as pure polyester, each system has the unique auxiliary agent species of oneself, often because different auxiliary agents
The problems such as species, different systems are caused the mutual destruction of surface property occur in processing.
Delustering agent is a class very conventional powder coating additive, three big powder coating systems of today have it is respective solely
Special delustering agent or dulling and curing agent, but can also be had an effect simultaneously in multiple systems without any money delustering agent.HAA
System is praised highly as relatively newer pure polyester system by the toxicity without TGIC by market, but the system delustering agent
Research is very thin, and the country only can make unglazed delustering agent so far still without especially desirable HAA system delustering agents, in
Light and dumb light are still blank.
Therefore, if exploitation is a can to realize the delustering agent of delustring in all powder coating system, especially can also
Enough fill up current industry blank product, it will be the technological achievement that powdery paints industry is expected, but the project not yet has
Any progress report.
The content of the invention
It is an object of the invention to provide general delustering agent of a kind of powdery paints and preparation method thereof, using by saturated polybasic acid
It is esterified with unsaturated polyacid and dihydric alcohol, esterification adds phenyl ring polybasic carboxylic acid or acid anhydrides to after to a certain degree
It is attached, while at least one unreacted carboxyl on phenyl ring polybasic carboxylic acid or acid anhydrides is kept, and other carboxyls then occur
Esterification forms polyester resin, and in all powder coating system delustring can occur for product.
To achieve these goals, the technical solution adopted by the present invention is as follows：
A kind of general delustering agent of powdery paints, for containing following polymerized unit (A), (B), (C), (D) contain carboxylic side-chain
Unsaturated polyester resin：
The polymerized unit (A), (B), (C), the quantity of (D) are respectively x, y, z, n, and the x, y, z, n are 50-1000
Integer；The x, y, z, n quantity ratio are 1:1-15:5-20:0.5-5；
Group R in the polymerized unit (A), (B), (C), (D)1、R3、R5For C1-C6Alkyl, R2、R4For hydrogen or C2-C15
Alkyl, R6、R9The repetition being combined for the polymerized unit (A), (B) and (C), R7、R8For hydrogen or carboxyl.
According to above scheme, the x, y, z, n are 50-600 integer.
A kind of preparation method of the general delustering agent of powdery paints, comprises the following steps：
(i) catalyst with connect under conditions of nitrogen, controlling reaction temperature is 80-120 DEG C, is added into reactor full
With polybasic carboxylic acid and unsaturated polybasic carboxylic acid, occur condensation reaction with dihydric alcohol, after reaction terminates, stop nitrogen input, vacuum
Low pressure suction filtration extracts moisture out, generates intermediate polyester, i.e. polymerized unit (A), (B) or (C)；
(ii) stop vacuum low-pressure suction filtration, recover after normal pressure, to gathering that step (i) is generated at a temperature of 100-140 DEG C
Phenyl ring polybasic carboxylic acid or acid anhydrides are added in compound intermediate, after all adding, reacts, has reacted under the conditions of vacuum low-pressure again
Unsaturated polyester resin of the delustering agent containing carboxylic side-chain is obtained after finishing.
Described saturation polybasic carboxylic acid and diol reaction formation unit (A) or (C)；The unsaturated polybasic carboxylic acid and two
First alcohol reacts to form polymerized unit (B)；The phenyl ring polybasic carboxylic acid after intermediate polyester reaction with forming the polymerized unit
(D)。
According to above scheme, the saturation polybasic carboxylic acid is ethanedioic acid, malonic acid, SA, adipic acid, dodecane two
Any one in acid, phthalic acid, terephthalic acid (TPA), trimellitic acid, Pyromellitic Acid or more than one combination.
According to above scheme, the unsaturated polybasic carboxylic acid is any one in maleic acid, maleic anhydride, acetylenedicarboxylic acid
Or more than one combination.
According to above scheme, the phenyl ring polybasic carboxylic acid or acid anhydrides are trimellitic anhydride, trimellitic acid, equal benzene tetramethyl
Any one in acid, pyromellitic acid anhydride or more than one combination.
According to above scheme, the catalyst is in sulfuric acid, p-methyl benzenesulfonic acid, ferric sulfate, zinc sulfate, antimony oxide
Any one or more than one combination, the consumption of the catalyst are the 0.3%-3% of reactant gross mass.
According to above scheme, the time of the condensation reaction is 0.5-3h.
According to above scheme, the reaction time of the step poly- (ii) is 3-7h.
According to above scheme, the vacuum of the vacuum low-pressure is -0.3~-0.8KPa.
The original material of the present invention is common fats race binary acid or phenyl ring binary acid (acid anhydrides), phenyl ring ternary or tetra-atomic acid
(acid anhydrides), aliphatic unsaturated dibasic acid (acid anhydrides) and dihydric alcohol.Phenyl ring ternary acid or tetra-atomic acid (acid anhydrides) and dihydric alcohol are anti-
Polymerized unit (A), unsaturated dibasic acid (acid anhydrides) and diol reaction production polymerized unit (B), binary acid or phenyl ring should be produced
Binary acid (acid anhydrides) and diol reaction production polymerized unit (C), three kinds of polymerized units (A), (B), (C) and ternary acid or quaternarys
Sour (acid anhydrides) reacted product is polymerized unit (D).
The beneficial effects of the invention are as follows：
1) present invention offer is a kind of can realize the delustering agent of extinction effect in all powder coating, fill up current row
Industry blank product；
2) more outstanding extinction effect, delustring gloss can be achieved in delustering agent of the invention in all powder coating system
Less than 30% is reached, not only extinction effect is approached in pure epoxy system powdery paints, and xanthochromia effect is also relatively more preferable；
3) simple production process of the invention, as long as two steps are that can synthesize target product, and is produced without harmful material
Raw, reaction condition is gentle, and raw material is all regular industrial raw material, is readily available, and its production cost is relatively low, and equipment is wanted without special
Ask.
Embodiment
Technical scheme is illustrated with reference to embodiment.
Below in an example, the E-12 epoxy resin produced using Anhui Meijia New Material Co., Ltd.；Zhejiang
The polyester resin 5700 of sky over the river pine new material Co., Ltd production；The polyester resin P4900 of DSM Chinese companies production；Shanghai is profound
The polyester resin CC2630-2 of coating material production of resins；The delustering agent or dulling and curing agent XG603- of Ningbo South Sea chemical production
1A, XG620A, XG607B and XG665；The JG803A of Ningbo South Sea chemical production；588 levellings of Ningbo South Sea chemical production
Agent；The 701 of Ningbo South Sea chemical production；The defoamer styrax of Ningbo South Sea chemical production；Ningbo South Sea chemical production
NR760 titanium dioxides；The filler 44-HB of Guizhou Hua Jia companies production；Other synthesis materials are analysis net product, without further
Processing is directly used.Coating gloss is measured according to GB9754-1998；Coating impact strength is measured according to GB1732-93；According to
GB16995-1997 measures gel time.
Embodiment 1：
The present invention provides a kind of general delustering agent of powdery paints and preparation method thereof, comprises the following steps：
(i) in the three neck round bottom equipped with mechanical agitator, thermometer, two mouthfuls of connectors, distillation bend pipe and condenser pipe
In, 19.2 grams of trimellitic anhydrides of addition, 14.7 grams of maleic anhydrides, 132.8 grams of terephthalic acid (TPA)s, 65.1 grams of ethylene glycol and 0.7 gram
The concentrated sulfuric acid, under conditions of nitrogen is passed through, is warming up to 110 DEG C of insulation 0.5h, then stops being passed through nitrogen, start vavuum pump suction filtration
Vacuum pressure is kept in -0.6kPa, vacuumizes and stops after 2h, generate intermediate polyester, i.e. polymerized unit (A), (B) or (C)；
(ii) recover after normal pressure, add 38 grams of trimellitic acids, be warming up to 120 DEG C, be again started up vavuum pump, keep true
After pneumatics power -0.6kPa, reaction 3h, unsaturated polyester resin of the delustering agent containing carboxylic side-chain is obtained.
In the present embodiment, the mol ratio of the trimellitic anhydride, maleic anhydride, terephthalic acid (TPA) and the ethylene glycol that use is 1:
1.5:8:10.5 synthetic copolymer intermediate polymerized units (A), (B) or (C).
Embodiment 2：
The present invention provides a kind of general delustering agent of powdery paints and preparation method thereof, comprises the following steps：
(i) in the three neck round bottom equipped with mechanical agitator, thermometer, two mouthfuls of connectors, distillation bend pipe and condenser pipe
In, 19.2 grams of trimellitic anhydrides of addition, 11.4 grams of acetylenedicarboxylic acids, 52 grams of malonic acid, 53.2 grams of propane diols and 0.5 gram are to toluene sulphur
Acid, under conditions of nitrogen is passed through, is warming up to 110 DEG C of insulation 0.5h, then stops being passed through nitrogen, start vavuum pump suction filtration and keep
Vacuum pressure vacuumizes and stopped after 2.5h, generate intermediate polyester, i.e. polymerized unit (A), (B) or (C) in -0.6kPa；
(ii) recover after normal pressure, add 38.1 grams of Pyromellitic Acids, be warming up to 120 DEG C, be again started up vavuum pump, keep
After vacuum pressure -0.6kPa, reaction 3h, unsaturated polyester resin of the delustering agent containing carboxylic side-chain is obtained.
In the present embodiment, the mol ratio of the trimellitic anhydride, acetylenedicarboxylic acid, malonic acid and the propane diols that use is 1:1:5:7
Synthetic copolymer intermediate polymerized unit (A), (B) or (C).
Embodiment 3：
The present invention provides a kind of general delustering agent of powdery paints and preparation method thereof, comprises the following steps：
(i) in the three neck round bottom equipped with mechanical agitator, thermometer, two mouthfuls of connectors, distillation bend pipe and condenser pipe
In, add 21.8 grams of pyromellitic acid anhydrides, 34.8 grams of maleic acids, 138 grams of dodecanedioic acids, 118 grams hexylene glycols and 3 grams of dense sulphur
Acid, under conditions of nitrogen is passed through, is warming up to 110 DEG C of insulation 0.5h, then stops being passed through nitrogen, start vavuum pump suction filtration and keep
Vacuum pressure vacuumizes and stopped after 3h, generate intermediate polyester, i.e. polymerized unit (A), (B) or (C) in -0.6kPa；
(ii) recover after normal pressure, add 50.8 grams of Pyromellitic Acids, be warming up to 140 DEG C, be again started up vavuum pump, keep
After vacuum pressure -0.6kPa, reaction 3h, unsaturated polyester resin of the delustering agent containing carboxylic side-chain is obtained.
In the present embodiment, the mol ratio of the trimellitic anhydride, acetylenedicarboxylic acid, malonic acid and the propane diols that use is 1:1:5:7
Synthetic copolymer intermediate polymerized unit (A), (B) or (C).
Acid value measuring has been carried out to the product of embodiment 1 to 3：
By the products obtained therefrom of embodiment 1 according to GB/T 2895-2008 pertinent regulations, acid value measuring is carried out, 0.5 gram of sample is taken
It is put into 250ml conical flasks, plus (volume ratio is 2 to the mixed solvent of 50ml pyridines, acetone, distilled water：21：1), with electric furnace slightly
Heating is completely dissolved sample, places after 20min plus mixed indicator liquid 2-3 drops, with 0.1N potassium hydroxide-ethanol standard liquids
Titration, to test solution in blueness and in not disappeared in 10 seconds as terminal, while making blank test.Calculating acid number is
162mgKOH/g.10 grams of products are taken again, mixed solvent is dissolved in, and 20 times of 0.1N sodium hydroxides-ethanol standard is molten when adding titration
Liquid carries out neutralization and shaken up.Then the bromine water of 20 milliliter of 1% mass concentration is taken, the solution of neutralization is gradually added with suction pipe, bromine is found
Water gradually fades, and illustrates in product with the presence of active carbon-carbon double bond.
By the products obtained therefrom of embodiment 2 according to GB/T 2895-2008 pertinent regulations, acid value measuring is carried out, 0.5 gram of sample is taken
It is put into 250ml conical flasks, plus (volume ratio is 2 to the mixed solvent of 50ml pyridines, acetone, distilled water：21：1), with electric furnace slightly
Heating is completely dissolved sample, places after 20min plus mixed indicator liquid 2-3 drops, with 0.1N potassium hydroxide-ethanol standard liquids
Titration, to test solution in blueness and in not disappeared in 10 seconds as terminal, while making blank test.Calculating acid number is
213mgKOH/g.10 grams of products are taken again, mixed solvent is dissolved in, and 20 times of 0.1N sodium hydroxides-ethanol standard is molten when adding titration
Liquid carries out neutralization and shaken up.Then the bromine water of 20 milliliter of 1% mass concentration is taken, the solution of neutralization is gradually added with suction pipe, bromine is found
Water gradually fades, and illustrates in product with the presence of active carbon-carbon double bond.
By the products obtained therefrom of embodiment 3 according to GB/T 2895-2008 pertinent regulations, acid value measuring is carried out, 0.5 gram of sample is taken
It is put into 250ml conical flasks, plus (volume ratio is 2 to the mixed solvent of 50ml pyridines, acetone, distilled water：21：1), with electric furnace slightly
Heating is completely dissolved sample, places after 20min plus mixed indicator liquid 2-3 drops, with 0.1N potassium hydroxide-ethanol standard liquids
Titration, to test solution in blueness and in not disappeared in 10 seconds as terminal, while making blank test.Calculating acid number is
178mgKOH/g.10 grams of products are taken again, mixed solvent is dissolved in, and 20 times of 0.1N sodium hydroxides-ethanol standard is molten when adding titration
Liquid carries out neutralization and shaken up.Then the bromine water of 20 milliliter of 1% mass concentration is taken, the solution of neutralization is gradually added with suction pipe, bromine is found
Water gradually fades, and illustrates in product with the presence of active carbon-carbon double bond.
Coating property detection has been carried out to the product of embodiment 1 to 3：
By the product delustering agent of embodiment 1 to 3, with commercially available epoxy resin (E-12), the other coating of polyester resin
Additive is mixed according to the consumption shown in table 1, forms epoxy powder coating.In table 1, E-12 is epoxy resin, 5700,
P4900, CC2630-2 are polyester resin, and 588 be levelling agent, and 701 be wetting enhancer, and NR760 is titanium dioxide, and 44-HB is to fill out
Material, JG803A is epoxy curing agent, and TGIC and T105 are respectively pure polyester solidifying agent.In addition, XG603-1A is pure epoxy
Dulling and curing agent, XG620A is epoxy polyester systems dulling and curing agent, and XG607B is pure polyester/TGIC system delustering agent, XG665
For pure polyester T105 system delustering agents, 4 kinds of delustering agents of the above equally list the composition of the comparative example as comparative example in table 1
And performance.
The present invention carries out coating preparation, coating formation and detection operation using the equipment shown in table 2：
First, using electronic scale, the various components for preparing coating are weighed according to the amount of each material shown in table 1, in PVE
It is well mixed, is then extruded in an extruder in polybag, in extruder parameter setting, the temperature in the firstth area and the secondth area
Set with reference to the expressing technique in table 3, the temperature in the 3rd area is 60 DEG C, and feed worm rotating speed is 350 revs/min, extrusion screw rod
Rotating speed is 350 revs/min.Material after fetching portion extrusion, is put into electric crusher and crushes, 180 eye mesh screens are used after crushing
Bulky grain is screened out, remaining powder, by coating compound electrostatic spraying to aluminium plywood or iron plate, forms thickness using electric spray gun
(determined for 75 microns of coated films after baking with thickness gauge), the operating voltage of the electric spray gun is 0.5kV, and electric current is 60 μ A,
Air pressure is 0.3MPa.Then the sheet material with coated film is transferred in baking oven, reasonable time is toasted at a suitable temperature,
Form the cated test sheet material of tool.Use the glossiness of coating, glue on glossometer, Coating impact instrument and gel instrument sheet material measurement
Change performance and impact resistance, observe by the naked eye to evaluate the yellowness of coating, as a result collect and be listed in Table 1 below.
Table 1：The coating composition (unit for gram) and performance of 1-3 of the embodiment of the present invention and comparative example
Condition of cure
Table 2：Coating prepares and measures the equipment and relevant parameter used in operation
Table 3：Each system model baking process of powdery paints and part expressing technique
| Powder coating systems | Baking process | Expressing technique |
| Pure epoxy system | 180 DEG C 10 minutes | First 95 DEG C of area, the second 105 DEG C of area |
| Epoxy-polyester system | 190 DEG C 15 minutes | First 105 DEG C of area, the second 115 DEG C of area |
| Pure polyester/TGIC system | 200 DEG C 12 minutes | First 105 DEG C of area, the second 115 DEG C of area |
| Pure polyester T105 systems | 200 DEG C 15 minutes | First 115 DEG C of area, the second 125 DEG C 4 of area |
The delustering agent that the experimental result listed from upper table 1 can be seen that the present invention is real in all powder coating system
Now more outstanding extinction effect, delustring gloss reaches less than 30%.The not only extinction effect in pure epoxy system powdery paints
It is close, and xanthochromia effect is also relatively more preferable.
In addition, simple production process of the present invention, as long as two steps are that can synthesize target product, experimentation
In, unharmful material is produced, and reaction condition is gentle, and raw material is all regular industrial raw material, is readily available, its production cost compared with
It is low, to equipment without particular/special requirement.
Above example is only used to illustrative and not limiting technical scheme, although above-described embodiment enters to the present invention
Detailed description is gone, the person skilled of this area should be understood：The present invention can be modified or replaced on an equal basis, but
Not departing from any modification and local replacement of spirit and scope of the invention all should cover in scope of the presently claimed invention.
Claims (10)
1. a kind of general delustering agent of powdery paints, it is characterised in that be to contain containing following polymerized unit (A), (B), (C), (D)
The unsaturated polyester resin of carboxylic side-chain：
The polymerized unit (A), (B), (C), the quantity of (D) are respectively x, y, z, n, and the x, y, z, n are the whole of 50-1000
Number；The x, y, z, n quantity ratio are 1:1-15:5-20:0.5-5；
Group R in the polymerized unit (A), (B), (C), (D)1、R3、R5For C1-C6Alkyl, R2、R4For hydrogen or C2-C15Alkyl,
R6、R9The repetition being combined for the polymerized unit (A), (B) and (C), R7、R8For hydrogen or carboxyl.
2. the general delustering agent of powdery paints according to claim 1, it is characterised in that the x, y, z, n are 50-600
Integer.
3. the preparation method of the general delustering agent of powdery paints according to claim 1, it is characterised in that including following step
Suddenly：
(i) catalyst with connect under conditions of nitrogen, controlling reaction temperature be 80-120 DEG C, into reactor add saturation it is many
First carboxylic acid and unsaturated polybasic carboxylic acid, occur condensation reaction with dihydric alcohol, after reaction terminates, and stop nitrogen input, vacuum low-pressure
Suction filtration extracts moisture out, generates intermediate polyester, i.e. polymerized unit (A), (B) or (C)；
(ii) stop vacuum low-pressure suction filtration, recover after normal pressure, the polymer generated at a temperature of 100-140 DEG C to step (i)
Phenyl ring polybasic carboxylic acid or acid anhydrides are added in intermediate, after all adding, is reacted again under the conditions of vacuum low-pressure, after completion of the reaction
Obtain unsaturated polyester resin of the delustering agent containing carboxylic side-chain.
4. the preparation method of the general delustering agent of powdery paints according to claim 3, it is characterised in that the saturation is polynary
Carboxylic acid is ethanedioic acid, malonic acid, SA, adipic acid, dodecanedioic acid, phthalic acid, terephthalic acid (TPA), inclined benzene front three
Any one in acid, Pyromellitic Acid or more than one combination.
5. the preparation method of the general delustering agent of powdery paints according to claim 3, it is characterised in that the unsaturation is more
First carboxylic acid is any one in maleic acid, maleic anhydride, acetylenedicarboxylic acid or more than one combination.
6. the preparation method of the general delustering agent of powdery paints according to claim 3, it is characterised in that the phenyl ring is polynary
Carboxylic acid or acid anhydrides are any one in trimellitic anhydride, trimellitic acid, Pyromellitic Acid, pyromellitic acid anhydride or a kind of
Combination above.
7. the preparation method of the general delustering agent of powdery paints according to claim 3, it is characterised in that the catalyst is
Any one in sulfuric acid, p-methyl benzenesulfonic acid, ferric sulfate, zinc sulfate, antimony oxide or more than one combination, the catalysis
The consumption of agent is the 0.3%-3% of reactant gross mass.
8. the preparation method of the general delustering agent of powdery paints according to claim 3, it is characterised in that the condensation reaction
Time be 0.5-3h.
9. the preparation method of the general delustering agent of powdery paints according to claim 3, it is characterised in that the step is poly- (ii)
Reaction time be 3-7h.
10. the preparation method of the general delustering agent of powdery paints according to claim 3, it is characterised in that the vacuum is low
The vacuum of pressure is -0.3~-0.8KPa.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113621263A (en) * | 2021-08-20 | 2021-11-09 | 梧州市泽和高分子材料有限公司 | Extinction auxiliary agent for beta-Hydroxyalkylamide (HAA) powder coating body using carboxyl acrylic resin as main body |
| CN114621617A (en) * | 2020-12-08 | 2022-06-14 | 梧州市泽和高分子材料有限公司 | Extinction auxiliary agent for beta-hydroxyalkylamide powder coating |
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| US20060229400A1 (en) * | 2002-05-31 | 2006-10-12 | Tim Fletcher | Powder coating matting agent comprising ester amide condensation product |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114621617A (en) * | 2020-12-08 | 2022-06-14 | 梧州市泽和高分子材料有限公司 | Extinction auxiliary agent for beta-hydroxyalkylamide powder coating |
| CN113621263A (en) * | 2021-08-20 | 2021-11-09 | 梧州市泽和高分子材料有限公司 | Extinction auxiliary agent for beta-Hydroxyalkylamide (HAA) powder coating body using carboxyl acrylic resin as main body |
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