CN111763465A - Modified resin for PCM with high weather resistance and high coating rate and preparation method thereof - Google Patents
Modified resin for PCM with high weather resistance and high coating rate and preparation method thereof Download PDFInfo
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- CN111763465A CN111763465A CN202010638511.1A CN202010638511A CN111763465A CN 111763465 A CN111763465 A CN 111763465A CN 202010638511 A CN202010638511 A CN 202010638511A CN 111763465 A CN111763465 A CN 111763465A
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- Prior art keywords
- polyester
- hour
- pcm
- modified resin
- weather resistance
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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
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1806—C6-(meth)acrylate, e.g. (cyclo)hexyl (meth)acrylate or phenyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/20—Esters of polyhydric alcohols or phenols, e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate
-
- 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
- C08G63/199—Acids or hydroxy compounds containing cycloaliphatic 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
-
- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/062—Copolymers with monomers not covered by C09D133/06
- C09D133/066—Copolymers with monomers not covered by C09D133/06 containing -OH groups
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (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)
- Polyesters Or Polycarbonates (AREA)
Abstract
The invention relates to a modified resin for PCM (pulse code modulation) with high weather resistance and high coating rate and a preparation method thereof.
Description
Technical Field
The invention relates to a modified resin, in particular to a modified resin for PCM with high weather resistance and high coating rate and a preparation method thereof.
Background
At present, the high-weather-resistance resin normally uses fluorocarbon or organic silicon resin, but the fluorocarbon or organic silicon resin has high price, the coating construction is inconvenient, the conventional polyester resin has poor weather resistance and low key coating rate, and a lot of organic solvents are required to be added, so that the VOC emission of the product is not up to the standard.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the modified resin for the PCM with high weather resistance and high coating rate and the preparation method thereof.
The invention is realized by the following technical scheme:
a modified resin for PCM with high weather resistance and high coating rate comprises a polyester part and an acrylic part, wherein the polyester part comprises the following components in percentage by weight:
the acrylic acid part comprises the following components in percentage by weight:
one or two of a catalyst A and an antioxidant B are added into the polyester part.
A preparation method of modified resin for PCM with high weather resistance and high coating rate comprises the following steps:
a. condensation reaction of hydroxyl and carboxyl in polyester raw materials, wherein polyester resin raw material monomers comprise BEPD (2-ethyl-2-butyl-1, 3-propylene glycol), NPG (neopentyl glycol), TMP (trimethylolpropane), HHPA (hexahydrophthalic anhydride), CHDA (1, 4-cyclohexanedimethanol) and CHDM (1, 4-cyclohexanedimethanol) which are put into a reaction kettle, the temperature is maintained at 160 ℃ for 1 hour, the temperature is raised to 230 ℃ at the speed of 10 ℃/h, wherein the gas phase temperature is controlled to be less than 100 ℃, the refractive index of effluent is monitored every 1 hour, the requirement is controlled to be below 1.3350, the gas phase temperature is maintained to be less than 90 ℃, reflux xylene is added, and the reaction is carried out until the viscosity: W-X, solid acid value: 3-5, solid content: cooling after 74-76%.
b. The acrylic resin monomer comprises MMA (methyl methacrylate), CHMA (cyclohexyl methacrylate), t-BMA (tert-butyl methacrylate), n-BMA (n-butyl methacrylate), HEMA (hydroxyethyl methacrylate) and a chain transfer agent AMSD (2, 4-diphenyl-4-methyl-1-pentene), and is put into another reaction kettle, the monomer is dripped for 3 hours under the action of an initiator at the temperature of 140 ℃, the monomer is maintained for 1 hour, the initiator I is supplemented, the monomer is maintained for 1 hour, the initiator II is supplemented, the monomer is maintained for 1 hour, the temperature is raised to 147 ℃, the reflux is carried out for 0.5 hour, and the viscosity is reached: Y-Z, solid content: cooling after 74-76%.
c. Through the high compatibility of the polyester part and the acrylic acid part, the polyester part and the acrylic acid part are spliced together in a ratio of 1: 1, and are packaged after being uniformly stirred.
Compared with the prior art, the invention has the beneficial effects that:
the polyester resin is prepared by synthesizing high-solid-content and high-weather-resistance polyester resin by using special raw materials such as BEPD (2-ethyl-2-butyl-1, 3-propylene glycol), NPG (neopentyl glycol), TMP (trimethylolpropane), HHPA (hexahydrophthalic anhydride), CHDA (1, 4-cyclohexanedimethanol) and CHDM (1, 4-cyclohexanedimethanol) under the conditions of a catalyst and an antioxidant, and due to the use of the special raw materials, the resin has the advantage of good miscibility with acrylic acid, so that conditions are provided for next modification; then MMA (methyl methacrylate), CHMA (cyclohexyl methacrylate), t-BMA (tert-butyl methacrylate), n-BMA (n-butyl methacrylate), HEMA (hydroxyethyl methacrylate) and AMSD (2, 4-diphenyl-4-methyl-1-pentene) are used for synthesizing the acrylic resin with high solid content and high weather resistance under the condition of an initiator, wherein AMSD is used as a chain transfer agent to help the resin to play a role in reducing viscosity, meanwhile, the odor is avoided, the molecular weight distribution is more uniform, CHMA provides excellent weather resistance for the resin, the viscosity of the resin is greatly reduced by using t-BMA, the vitrification temperature of the resin is ensured, and the requirements of high solid content and hardness are met; after the two resins are mixed, the advantages and the disadvantages of the two resins are neutralized, so that the requirements of high weather resistance and high coating rate are met.
Detailed Description
Example 1
A modified resin for PCM with high weatherability and high coating rate comprises a polyester part and an acrylic part,
the polyester part comprises the following components in percentage by weight:
the acrylic acid part comprises the following components in percentage by weight:
example 2
A modified resin for PCM with high weather resistance and high coating rate comprises a polyester part and an acrylic part, wherein the polyester part comprises the following components in percentage by weight:
the acrylic acid part comprises the following components in percentage by weight:
example 3
A modified resin for PCM with high weather resistance and high coating rate comprises a polyester part and an acrylic part, wherein the polyester part comprises the following components in percentage by weight:
the acrylic acid part comprises the following components in percentage by weight:
basic performance comparison of conventional polyester products with the inventive polyester products:
| conventional polyester products | The product | |
| Solid content | 65％ | 75％ |
| Viscosity of the oil | Z-Z1 | X-Z |
| Hardness of | 3H | 3-4H |
| Workability | 1-2T | 1-2T |
| MEK resistance | ＞100 | ＞100 |
| Impact/90 cm | OK | OK |
| Decocting in water for 2h | OK | OK |
| Resistance to 5% HCl 24h | OK | OK |
| Resisting 5% NaOH for 24h | OK | OK |
| Solid content of paint | 54.8 | 58.9 |
| Coating rate | 408 | 445 |
| QUVB (1000hr) -light retention | 65％ | 85％ |
| QUVB (1500hr) -light retention | 51％ | 79％ |
| QUVB (2000hr) -light retention | / | 62％ |
| SST(500hr) | ＜1mm | ＜1mm |
| SST(750hr) | ＜3mm | ＜2mm |
In summary, the present invention is only a preferred embodiment, and not intended to limit the scope of the invention, and all equivalent changes and modifications in the shape, structure, characteristics and spirit of the present invention described in the claims should be included in the scope of the present invention.
Claims (3)
1. A modified resin for PCM with high weather resistance and high coating rate is characterized in that: the acrylic polyester adhesive comprises a polyester part and an acrylic part, wherein the polyester part comprises the following components in percentage by weight:
the acrylic acid part comprises the following components in percentage by weight:
2. the modified resin for PCM according to claim 1, wherein said modified resin comprises: one or two of a catalyst A and an antioxidant B are added into the polyester part.
3. A method for preparing the modified resin for PCM of high weather resistance and high coating rate according to any one of claims 1 to 2, characterized in that: comprises the following steps:
a. performing condensation reaction of hydroxyl and carboxyl in a polyester raw material, putting a polyester resin raw material monomer into a reaction kettle, maintaining the temperature at 160 ℃ for 1 hour, heating to 230 ℃ at the speed of 10 ℃/h, controlling the gas phase temperature to be less than 100 ℃, monitoring the refractive index of water every 1 hour, controlling the refractive index to be below 1.3350, maintaining the gas phase temperature to be less than 90 ℃ at 230 ℃, adding reflux dimethylbenzene, and reacting to a set index, wherein the viscosity is required: W-X, solid acid value: 3-5, solid content: 74-76%, and then cooling.
b. Adding acrylic resin monomer into another reaction kettle, dropping the monomer for 3 hours under the action of an initiator at 140 ℃, maintaining for 1 hour, supplementing the initiator I for 1 hour, supplementing the initiator II for 1 hour, heating to 147 ℃, refluxing for 0.5 hour to reach a set index, wherein the required viscosity is as follows: Y-Z, solid content: 74-76%, and then cooling.
c. Through the high compatibility of the polyester part and the acrylic acid part, the polyester part and the acrylic acid part are spliced according to the ratio of 1: 1-3, and are packaged after being uniformly stirred.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010638511.1A CN111763465A (en) | 2020-07-06 | 2020-07-06 | Modified resin for PCM with high weather resistance and high coating rate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010638511.1A CN111763465A (en) | 2020-07-06 | 2020-07-06 | Modified resin for PCM with high weather resistance and high coating rate and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111763465A true CN111763465A (en) | 2020-10-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010638511.1A Pending CN111763465A (en) | 2020-07-06 | 2020-07-06 | Modified resin for PCM with high weather resistance and high coating rate and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111763465A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030058448A (en) * | 2001-12-31 | 2003-07-07 | 주식회사 디피아이 | Acrylic Denatured Polyester Resin Composition |
| CN101029122A (en) * | 2006-03-03 | 2007-09-05 | 同济大学 | Production and use for acrylic ester modified polyester resin |
| CN103864998A (en) * | 2014-03-12 | 2014-06-18 | 江门市三木化工有限公司 | Acrylic resin and preparation method thereof |
| CN106750210A (en) * | 2016-12-12 | 2017-05-31 | 衡阳山泰化工有限公司 | A kind of coatings with high weatherability polyester resin and coating |
| CN107814945A (en) * | 2017-10-30 | 2018-03-20 | 广州擎天材料科技有限公司 | A kind of saturated polyester acrylic resin graft copolymer containing carboxyl functional group and its preparation method and application |
| CN108070077A (en) * | 2017-11-14 | 2018-05-25 | 湖州南浔嘉骏化工有限公司 | A kind of high durable saturated polyester resin and preparation method |
-
2020
- 2020-07-06 CN CN202010638511.1A patent/CN111763465A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030058448A (en) * | 2001-12-31 | 2003-07-07 | 주식회사 디피아이 | Acrylic Denatured Polyester Resin Composition |
| CN101029122A (en) * | 2006-03-03 | 2007-09-05 | 同济大学 | Production and use for acrylic ester modified polyester resin |
| CN103864998A (en) * | 2014-03-12 | 2014-06-18 | 江门市三木化工有限公司 | Acrylic resin and preparation method thereof |
| CN106750210A (en) * | 2016-12-12 | 2017-05-31 | 衡阳山泰化工有限公司 | A kind of coatings with high weatherability polyester resin and coating |
| CN107814945A (en) * | 2017-10-30 | 2018-03-20 | 广州擎天材料科技有限公司 | A kind of saturated polyester acrylic resin graft copolymer containing carboxyl functional group and its preparation method and application |
| CN108070077A (en) * | 2017-11-14 | 2018-05-25 | 湖州南浔嘉骏化工有限公司 | A kind of high durable saturated polyester resin and preparation method |
Non-Patent Citations (2)
| Title |
|---|
| 张学敏等著: "《涂料与涂装技术》", 31 January 2006, 化学工业出版社 * |
| 朱万强主编: "《涂料基础教程》", 30 June 2012, 西南交通大学出版社 * |
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Application publication date: 20201013 |
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| RJ01 | Rejection of invention patent application after publication |