CN115304994A - Formula of quick-drying high-adhesion modified polyurethane three-proofing paint and preparation method thereof - Google Patents
Formula of quick-drying high-adhesion modified polyurethane three-proofing paint and preparation method thereof Download PDFInfo
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- CN115304994A CN115304994A CN202211082585.7A CN202211082585A CN115304994A CN 115304994 A CN115304994 A CN 115304994A CN 202211082585 A CN202211082585 A CN 202211082585A CN 115304994 A CN115304994 A CN 115304994A
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- modified polyurethane
- quick
- proofing paint
- stirring
- drier
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- 239000003973 paint Substances 0.000 title claims abstract description 59
- 239000004814 polyurethane Substances 0.000 title claims abstract description 52
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 52
- 238000001035 drying Methods 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 229920000180 alkyd Polymers 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 47
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 9
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 9
- 229910052791 calcium Inorganic materials 0.000 claims description 9
- 239000011575 calcium Substances 0.000 claims description 9
- GNEMDYVJKXMKCS-UHFFFAOYSA-N cobalt zirconium Chemical compound [Co].[Zr] GNEMDYVJKXMKCS-UHFFFAOYSA-N 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 9
- 229910052726 zirconium Inorganic materials 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000005056 polyisocyanate Substances 0.000 claims description 8
- 229920001228 polyisocyanate Polymers 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- -1 TDI Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- WJIOHMVWGVGWJW-UHFFFAOYSA-N 3-methyl-n-[4-[(3-methylpyrazole-1-carbonyl)amino]butyl]pyrazole-1-carboxamide Chemical compound N1=C(C)C=CN1C(=O)NCCCCNC(=O)N1N=C(C)C=C1 WJIOHMVWGVGWJW-UHFFFAOYSA-N 0.000 claims description 2
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- WHIVNJATOVLWBW-UHFFFAOYSA-N n-butan-2-ylidenehydroxylamine Chemical compound CCC(C)=NO WHIVNJATOVLWBW-UHFFFAOYSA-N 0.000 claims description 2
- 235000015096 spirit Nutrition 0.000 claims description 2
- 238000009472 formulation Methods 0.000 claims 3
- 239000000203 mixture Substances 0.000 claims 3
- 239000002994 raw material Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000003269 fluorescent indicator Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/68—Unsaturated polyesters
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/80—Processes for incorporating ingredients
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention belongs to the technical field of three-proofing paint, and particularly relates to quick-drying high-adhesion modified polyurethane three-proofing paint and a preparation method thereof, wherein the quick-drying high-adhesion modified polyurethane three-proofing paint comprises the following materials in percentage by weight: a: 80-90% of alkyd resin modified polyurethane; b: 10-19% of a drier; c:0.9% of an anti-skinning agent; d:0.16 fluorescent powder; the three-proofing paint disclosed by the invention not only has quick curing, but also has high adhesiveness to a PCB (printed circuit board), so that the function of direct normal-temperature quick curing without baking equipment is realized, and meanwhile, the phenomenon of wrinkling on the surface of quick curing is solved, and the three-proofing paint is good in adhesiveness and strong in protection.
Description
Technical Field
The invention belongs to the technical field of three-proofing paint, and particularly relates to quick-drying high-adhesion modified polyurethane three-proofing paint and a preparation method thereof.
Background
The improvement of social productivity is promoted by technological progress, the living standard of the people is greatly improved, and the material demand of the common people is changed day by day. Under the current social background, the requirement on the practical service life of circuit boards of all electronic products is stricter, so the production technology of the three-proofing paint is realized, and the three-proofing paint is used for protecting the circuit boards of the electronic products, such as an impact-resistant modified polyurethane three-proofing paint and a preparation method thereof, disclosed by the invention with the application number of CN202010230989.0, wherein the three-proofing paint comprises the following components in parts by weight: 65-85 parts of organic silicon modified polyurethane resin, 5-20 parts of solvent, 1-5 parts of drier, 1-5 parts of anti-skinning agent, 0.1-0.5 part of fluorescent indicator, 1-5 parts of bactericide and 1-5 parts of auxiliary agent; the organic silicon modified polyurethane resin is prepared from the following components in parts by weight: 5-10 parts of polysiloxane, 0.5-4 parts of catalyst, 30-50 parts of fatty acid, 10-20 parts of polyol, 5-15 parts of isocyanate and 20-45 parts of solvent. According to the invention, on the basis of retaining the excellent protection performance of the polyurethane three-proofing paint, the polyurethane three-proofing paint is modified, and the organic silicon group is introduced, so that the hardness of the thick film three-proofing paint is reduced, and the long-period impact aging resistance of the thick film is improved; the modified polyurethane three-proofing paint disclosed by the invention uses an environment-friendly solvent which does not contain aromatic hydrocarbon and has low odor, so that the working environment is improved.
However, although the three-proofing paint improves the long-period impact aging resistance of the thick film, the curing and hinging are slow, the equipment cost needs to be increased, and the three-proofing paint which is cured quickly on the market is likely to have the phenomena of unattractive paint film and easy degumming, so the invention aims to provide the quick-drying high-adhesion modified polyurethane three-proofing paint and the preparation method thereof.
Disclosure of Invention
The invention aims to provide a quick-drying high-adhesion modified polyurethane three-proofing paint and a preparation method thereof, and aims to solve the technical problems that in the prior art, the cost of equipment is increased due to the slow-curing three-proofing paint, and the phenomenon that a paint film is not attractive and easy to degum is likely to occur due to the fast-curing three-proofing paint.
In order to achieve the purpose, the formula of the quick-drying modified polyurethane three-proofing paint provided by the embodiment of the invention comprises the following materials in percentage by weight: a: 80-90% of alkyd resin modified polyurethane; b: 10-19% of a drier; c:0.9% of an anti-skinning agent; d:0.16 fluorescent powder.
Preferably, the formula of the alkyd resin modified polyurethane is E:15-25% alkyd resin; f:30-50% of polyisocyanate; g:10-15% diethylene glycol; h is 8-12% ethanol; j:15-20% of solvent oil.
Preferably, the polyisocyanate comprises one or more of IPDI, TDI, HDI and TMDI.
Preferably, the solvent oil comprises one or more of D80, D30 and D40.
Preferably, the drier comprises one or more of calcium drier with metal content of 4-6%, zirconium drier with metal content of 15-20%, cobalt drier with metal content of 9-12% and zirconium-cobalt mixed drier with metal content of 15-20%.
Preferably, the content of the methyl ethyl ketoxime in the anti-skinning agent is more than or equal to 99.0%.
Preferably, the method is characterized by comprising the following steps: (a) Adding polyisocyanate and alkyd resin into a reaction kettle, uniformly mixing at normal temperature, heating, stirring for the first time, adding diglycol after stirring for the first time, and adding ethanol and solvent oil to obtain alkyd resin modified polyurethane; (b) And (3) putting the alkyd resin modified polyurethane into a stirrer, adding an anti-skinning agent, starting the planetary stirrer for second stirring, adding a calcium drier, a zirconium drier and a zirconium-cobalt mixed drier after uniformly stirring, stirring for the third time, adding fluorescent powder after stirring for the third time, starting a dispersion disc for stirring for the fourth time, and stirring for the fourth time to obtain the quick-drying modified polyurethane three-proofing paint.
Preferably, the weight percentages of the components in the step (a) are as follows: 38% polyisocyanate, 19% alkyd resin, 16% diethylene glycol, 8% ethanol and 19% mineral spirits.
Preferably, the temperature after the temperature rise in the step (a) is 90 ℃.
Preferably, the time for the second stirring, the third stirring and the fourth stirring in the step (b) is 30-60min
The technical scheme or the technical schemes in the quick-drying type high-adhesion modified polyurethane three-proofing paint and the preparation method thereof provided by the embodiment of the invention at least have one of the following technical effects:
the three-proofing paint disclosed by the invention not only has quick curing, but also has high adhesiveness to a PCB (printed circuit board), so that the function of direct normal-temperature quick curing without baking equipment is realized, and meanwhile, the phenomenon of wrinkling on the surface of quick curing is solved, and the three-proofing paint is good in adhesiveness and strong in protection.
Detailed Description
The present invention will be further described with reference to the following examples, but the embodiments of the present invention are not limited thereto.
Example 1
The embodiment provides a quick-drying modified polyurethane three-proofing paint which is prepared from the following raw materials in percentage by mass: 87% of alkyd resin modified polyurethane; 0.9 percent of anti-skinning agent; stirring for 3-5min at normal pressure, stirring for 30-60min at 40 rpm, stopping the machine, adding 2.54% of calcium drier, 6.4% of zirconium drier and 3% of zirconium cobalt drier, starting 25 rpm, stirring for 3-5min, stirring for 30-60min at 40 rpm, stopping the machine, adding 0.16% of fluorescent agent, starting a dispersion disc, and continuously stirring for 30-60min to obtain the quick-drying modified polyurethane three-proofing paint.
Example 2
The embodiment provides a quick-drying modified polyurethane three-proofing paint, which is prepared from the following raw materials in percentage by mass: 87% of alkyd resin modified polyurethane; 0.9 percent of anti-skinning agent; stirring for 3-5min at normal pressure, stirring for 30-60min at 40 rpm, stopping adding 7.4% of zirconium drier and 4.54% of zirconium cobalt drier (removing calcium drier), starting 25 rpm, stirring for 3-5min, stirring for 30-60min at 40 rpm, stopping adding 0.16% of fluorescent agent, starting a dispersion disc, and continuously stirring for 30-60min to obtain the quick-drying modified polyurethane three-proofing paint.
Example 3
The embodiment provides a quick-drying modified polyurethane three-proofing paint which is prepared from the following raw materials in percentage by mass: 87% of alkyd resin modified polyurethane; 0.9 percent of anti-skinning agent; stirring for 3-5min at normal pressure, stirring for 30-60min at 40 rpm, stopping adding 4.54% of calcium drier and 7.4% of zirconium cobalt drier (removing zirconium drier), starting 25 rpm, stirring for 3-5min, stirring for 30-60min at 40 rpm, stopping adding 0.16% of fluorescent agent, starting a dispersion disc, and continuously stirring for 30-60min to obtain the quick-drying modified polyurethane three-proofing paint.
Example 4
The embodiment provides a quick-drying modified polyurethane three-proofing paint which is prepared from the following raw materials in percentage by mass: 87% of alkyd resin modified polyurethane; 0.9 percent of anti-skinning agent; stirring for 3-5min at normal pressure, stirring for 30-60min at 40 rpm, stopping the machine, adding 2.4% of calcium drier, 5.4% of zirconium drier and 2% of zirconium cobalt drier, starting 25 rpm, stirring for 3-5min, stirring for 30-60min at 40 rpm, stopping the machine, adding 0.16% of fluorescent agent, starting a dispersion disc, and continuing stirring for 30-60min to obtain the quick-drying modified polyurethane three-proofing paint.
Example 5
The embodiment provides a quick-drying modified polyurethane three-proofing paint, which is prepared from the following raw materials in percentage by mass: 87% of alkyd resin modified polyurethane; 0.9 percent of anti-skinning agent; stirring for 3-5min at normal pressure, stirring for 30-60min at 40 rpm, stopping adding 7.4% of calcium drier and 6.4% of zirconium drier (removing zirconium cobalt drier), starting 25 rpm, stirring for 3-5min, stirring for 30-60min at 40 rpm, stopping adding 0.16% of fluorescent agent, starting a dispersion disc, and continuously stirring for 30-60min to obtain the quick-drying modified polyurethane three-proofing paint.
In order to test the polyurethane three-proofing paint, the applicant tested the adhesion of the polyurethane three-proofing paint obtained in examples 1-5 by using the test standard GB/T9286-2021 scratch test for paint films of colored paint and clear paint, and tested the dry-off time by using a finger touch method, wherein the finger touch method is that the surface of the paint film is slightly touched by fingers, and the surface is considered to be dry if the surface feels slightly sticky but no paint is stuck on the fingers. The parameters are shown in Table 1
TABLE 1
From the technical parameters, the quick-drying modified polyurethane three-proofing paint realizes 1 and quick curing; 2. the curing is rapid, and the surface has no wrinkles and is bright; 3. good adhesiveness to the PCB and strong protection.
The rest of this embodiment is the same as the first embodiment, and the unexplained features in this embodiment are explained by the first embodiment, which is not described herein again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A formula of a quick-drying modified polyurethane three-proofing paint is characterized by comprising the following materials in percentage by weight: a: 80-90% of alkyd resin modified polyurethane; b: 10-19% of a drier; c:0.9% of an anti-skinning agent; d:0.16 fluorescent powder.
2. The formula of the quick-drying modified polyurethane three-proofing paint as claimed in claim 1, wherein the formula of the alkyd resin modified polyurethane is E:15-25% alkyd resin; f:30-50% of polyisocyanate; g:10-15% diethylene glycol; h is 8-12% ethanol; j:15-20% solvent oil.
3. The formulation of a quick-drying modified polyurethane three-proofing paint according to claim 2, wherein the polyisocyanate comprises one or more of IPDI, TDI, HDI and TMDI.
4. The formulation of the quick-drying modified polyurethane three-proofing paint as claimed in claim 2, wherein the solvent oil comprises one or more of D80, D30 and D40.
5. The formulation of the quick-drying modified polyurethane three-proofing paint as claimed in claim 1, wherein the drier comprises one or more of a calcium drier with a metal content of 4-6%, a zirconium drier with a metal content of 15-20%, a cobalt drier with a metal content of 9-12% and a zirconium-cobalt mixed drier with a metal content of 15-20%.
6. The formula of the quick-drying modified polyurethane three-proofing paint as claimed in claim 1, wherein the content of methyl ethyl ketoxime in the anti-skinning agent is not less than 99.0%.
7. A production process of a quick-drying modified polyurethane three-proofing paint is characterized by comprising the following steps: (a) Adding polyisocyanate and alkyd resin into a reaction kettle, uniformly mixing at normal temperature, heating, stirring for the first time, adding diglycol after stirring for the first time, and adding ethanol and solvent oil to obtain alkyd resin modified polyurethane; (b) And (2) putting the alkyd resin modified polyurethane into a stirrer, adding an anti-skinning agent, starting the planetary stirrer for second stirring, adding a calcium drier, a zirconium drier and a zirconium-cobalt mixed drier after uniformly stirring, stirring for the third time, adding fluorescent powder after stirring for the third time, starting a dispersion disc for stirring for the fourth time, and stirring for the fourth time to obtain the quick-drying modified polyurethane three-proofing paint.
8. The production process of the quick-drying modified polyurethane three-proofing paint according to claim 7, wherein the weight percentages of the components in the step (a) are as follows: 38% polyisocyanate, 19% alkyd resin, 16% diethylene glycol, 8% ethanol and 19% mineral spirits.
9. The process for producing a quick-drying modified polyurethane three-proofing paint according to claim 7, wherein the temperature after the temperature rise in the step (a) is 90 ℃.
10. The process for producing a quick-drying modified polyurethane three-proofing paint according to claim 7, wherein the time for the second stirring, the third stirring and the fourth stirring in the step (b) is 30-60min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211082585.7A CN115304994A (en) | 2022-09-06 | 2022-09-06 | Formula of quick-drying high-adhesion modified polyurethane three-proofing paint and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211082585.7A CN115304994A (en) | 2022-09-06 | 2022-09-06 | Formula of quick-drying high-adhesion modified polyurethane three-proofing paint and preparation method thereof |
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| CN115304994A true CN115304994A (en) | 2022-11-08 |
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| CN202211082585.7A Pending CN115304994A (en) | 2022-09-06 | 2022-09-06 | Formula of quick-drying high-adhesion modified polyurethane three-proofing paint and preparation method thereof |
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| US20100048789A1 (en) * | 2008-08-22 | 2010-02-25 | Nan Ya Plastics Corporation | Resin composition of high thermal conductivity and high glass transition temperature (Tg) and for use with PCB, and prepreg and coating thereof |
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| CN103756544A (en) * | 2014-01-26 | 2014-04-30 | 一远电子科技有限公司 | Polyurethane three-proofing coating |
| CN107793561A (en) * | 2017-09-26 | 2018-03-13 | 南雄市金鸿泰化工新材料有限公司 | A kind of synthetic method of the isocyanate-modified alkyd resin of three-proofing coating |
| CN111234674A (en) * | 2020-03-27 | 2020-06-05 | 上海回天新材料有限公司 | Impact-resistant modified polyurethane three-proofing paint and preparation method thereof |
| CN111662621A (en) * | 2020-07-08 | 2020-09-15 | 铜陵华科电子材料有限公司 | Flame-retardant three-proofing paint for printed circuit board and preparation method thereof |
| CN112608663A (en) * | 2020-12-03 | 2021-04-06 | 迪马新材料科技（苏州）有限公司 | Quick-drying benzene-free alkyd coating and preparation method thereof |
-
2022
- 2022-09-06 CN CN202211082585.7A patent/CN115304994A/en active Pending
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| CN111234674A (en) * | 2020-03-27 | 2020-06-05 | 上海回天新材料有限公司 | Impact-resistant modified polyurethane three-proofing paint and preparation method thereof |
| CN111662621A (en) * | 2020-07-08 | 2020-09-15 | 铜陵华科电子材料有限公司 | Flame-retardant three-proofing paint for printed circuit board and preparation method thereof |
| CN112608663A (en) * | 2020-12-03 | 2021-04-06 | 迪马新材料科技（苏州）有限公司 | Quick-drying benzene-free alkyd coating and preparation method thereof |
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Application publication date: 20221108 |
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