CN103224617A - Polyester resin used for indoor powder coating and preparation method - Google Patents
Polyester resin used for indoor powder coating and preparation method Download PDFInfo
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- CN103224617A CN103224617A CN2012100212720A CN201210021272A CN103224617A CN 103224617 A CN103224617 A CN 103224617A CN 2012100212720 A CN2012100212720 A CN 2012100212720A CN 201210021272 A CN201210021272 A CN 201210021272A CN 103224617 A CN103224617 A CN 103224617A
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Abstract
The invention relates to the powder coating filed, and concretely relates to polyester resin which is solidified with epoxy resin with ratio of 50:50 used for indoor powder coating and a preparation method, the polyester resin comprises the components by weight: 10-20 parts of neopentyl glycol, 2-5 parts of glycol, 10-20 parts of diethylene glycol, 1-3 parts of trimethylolpropane, 50-60 parts of terephthalic acid, 10-20 parts of trimellitic anhydride, 0.2-0.5 parts of catalyst and 1-3 parts of curing accelerator. The polyester resin has the advantages of light color, uniform distribution of molecular weight, proper acid value, softening point and glass transition temperature, the powder coating prepared by polyester resin has the advantages of high luster, good levelling property, good mechanical capacity, strong decorativeness, boiling resistance and bending resistance.
Description
Technical field
The present invention relates to art of powder coatings, be specifically related to a kind of and the indoor polyester resin for powder coating of Resins, epoxy 50:50 solidified and preparation method thereof.
Background technology
Powder coating is a kind of novel solvent 100% solid powdery coating that do not contain.Have without solvent, pollution-free, save characteristics such as the energy and resource, the physical strength height that reduces labor intensity and film.Polyester powder coating is compared with other types of powders coating, has peculiar property.Show that weathering resistance, the rotary light performance of anti-the ultraviolet are better than Resins, epoxy.In addition because vibrin has polar group, so powder utilization than Resins, epoxy height, is difficult for yellowing in the bake process, the glossiness height, good leveling property, characteristic such as paint film is plentiful, and is of light color, thereby have excellent decoration.
Summary of the invention
The indoor polyester resin for powder coating of advantages such as the object of the invention is to provide that a kind of preparation has that high gloss, levelling property are good, good mechanical property, ornamental strong, water boiling resistance, warping resistance.
The technical solution used in the present invention is: the component of a kind of indoor polyester resin for powder coating of the present invention and weight proportion are: 10～20 parts of neopentyl glycol, 2～5 parts of ethylene glycol, 10～20 parts of Diethylene Glycols, 1～3 part of TriMethylolPropane(TMP), 50～60 parts of terephthalic acids, 10～20 parts of trimellitic acid 1,2-anhydrides, 0.2～0.5 part of catalyzer, 1～3 part of curing catalyst.
Prepare the method for the described a kind of polyester resin for powder coating of claim 1, may further comprise the steps:
A, in reactor, with still temperature rise to 80 ℃, add 10～20 parts of neopentyl glycol, 2～5 parts of ethylene glycol, 10～20 parts of Diethylene Glycols, 1～3 part of TriMethylolPropane(TMP), 50～60 parts of terephthalic acids, 0.2～0.5 part of catalyzer;
B, temperature of reaction kettle progressively being risen to 235 ℃ by 2～3 ℃/15 minutes temperature rise rates, and reacted 100～120 minutes under 235 ℃ of temperature, is 20～25mgKOH/g until the acid number of reactant;
After the acid number of c, reactant to be detected is 20～25mgKOH/g, carrying out 30～60 minutes polycondensation under 0.090～0.095MPa vacuum, is 6～12mgKOH/g until the acid number of reactant;
After the acid number of d, reactant to be detected is 6～12mgKOH/g, adding 10～20 parts of trimellitic acid 1,2-anhydrides, carry out 30～60 minutes reaction under 235 ℃ of conditions of still temperature, is 67～77mgKOH/g until the acid number of reactant;
After the acid number of e, reactant to be detected is 67～77mgKOH/g, add 1～3 part of curing catalyst, reduce to discharging after the mixing of carrying out at least 30 minutes under 180～200 ℃ of conditions in temperature.
Described catalyzer is a monobutyl zinc oxide.
Described curing catalyst is 18/16 tertiary amine.
Advantage of the present invention is: by the powder coating of vibrin of the present invention preparation have that high gloss, levelling property are good, advantages such as good mechanical property, ornamental strong, water boiling resistance, warping resistance.
Embodiment
In the pet reaction still, the still temperature is heated to 80 ℃, drop into neopentyl glycol, ethylene glycol, Diethylene Glycol, TriMethylolPropane(TMP), terephthalic acid, catalyzer monobutyl zinc oxide, temperature of reaction kettle is progressively risen to 235 ℃ by 2～3 ℃/15 minutes temperature rise rates, and under 235 ℃ of temperature, reacted 100～120 minutes, be 20～25mgKOH/g until the acid number of reactant; After the acid number of reactant to be detected is 20～25mgKOH/g, carrying out 30～60 minutes polycondensation under 0.090～0.095MPa vacuum, is 6～12mgKOH/g until the acid number of reactant; After the acid number of reactant to be detected is 6～12mgKOH/g, adding trimellitic acid 1,2-anhydride, carry out 30～60 minutes reaction under 235 ℃ of conditions of still temperature, is 67～77mgKOH/g until the acid number of reactant; After the acid number of reactant to be detected is 67～77mgKOH/g, add curing catalyst 18/16 tertiary amine, reduce to discharging after the mixing of carrying out at least 30 minutes under 180～200 ℃ of conditions in temperature.
Embodiment 1:
In the pet reaction still, the still temperature is heated to 80 ℃, drop into 10 parts of neopentyl glycol, 2 parts of ethylene glycol, 10 parts of Diethylene Glycols, 1 part of TriMethylolPropane(TMP), 50 parts of terephthalic acids, 0.2 part in catalyzer monobutyl zinc oxide, temperature of reaction kettle is progressively risen to 235 ℃ by 2 ℃/15 minutes temperature rise rates, and under 235 ℃ of temperature, reacted 110 minutes, be 20mgKOH/g until the acid number of reactant; After the acid number of reactant to be detected is 20mgKOH/g, carrying out 45 minutes polycondensation under the 0.09MPa vacuum, is 6mgKOH/g until the acid number of reactant; After the acid number of reactant to be detected is 6mgKOH/g, adding 10 parts of trimellitic acid 1,2-anhydrides, carry out 45 minutes reaction under 235 ℃ of conditions of still temperature, is 68.3mgKOH/g until the acid number of reactant; After the acid number of reactant to be detected is 68.3mgKOH/g, add 1 part of curing catalyst 18/16 tertiary amine, reduce to discharging after the mixing of carrying out 35 minutes under 180 ℃ of conditions in temperature.
The acid number of prepared vibrin is 68.3mgKOH/g, and second-order transition temperature is 50 ℃, and softening temperature is 103 ℃.
Embodiment 2:
In the pet reaction still, the still temperature is heated to 80 ℃, drop into 15 parts of neopentyl glycol, 4 parts of ethylene glycol, 15 parts of Diethylene Glycols, 2 parts of TriMethylolPropane(TMP)s, 55 parts of terephthalic acids, 0.4 part in catalyzer monobutyl zinc oxide, temperature of reaction kettle is progressively risen to 235 ℃ by 2 ℃/15 minutes temperature rise rates, and under 235 ℃ of temperature, reacted 110 minutes, be 22mgKOH/g until the acid number of reactant; After the acid number of reactant to be detected is 22mgKOH/g, carrying out 45 minutes polycondensation under the 0.095MPa vacuum, is 9mgKOH/g until the acid number of reactant; After the acid number of reactant to be detected is 9mgKOH/g, adding 15 parts of trimellitic acid 1,2-anhydrides, carry out 45 minutes reaction under 235 ℃ of conditions of still temperature, is 70.5mgKOH/g until the acid number of reactant; After the acid number of reactant to be detected is 70.5mgKOH/g, add 2 parts of curing catalyst 18/16 tertiary amines, reduce to discharging after the mixing of carrying out 45 minutes under 180 ℃ of conditions in temperature.
The acid number of prepared vibrin is 70.5mgKOH/g, and second-order transition temperature is 55 ℃, and softening temperature is 108 ℃.
Embodiment 3:
In the pet reaction still, the still temperature is heated to 80 ℃, drop into 20 parts of neopentyl glycol, 5 parts of ethylene glycol, 20 parts of Diethylene Glycols, 3 parts of TriMethylolPropane(TMP)s, 60 parts of terephthalic acids, 0.5 part in catalyzer monobutyl zinc oxide, temperature of reaction kettle is progressively risen to 235 ℃ by 3 ℃/15 minutes temperature rise rates, and under 235 ℃ of temperature, reacted 120 minutes, be 25mgKOH/g until the acid number of reactant; After the acid number of reactant to be detected is 25mgKOH/g, carrying out 45 minutes polycondensation under the 0.095MPa vacuum, is 12mgKOH/g until the acid number of reactant; After the acid number of reactant to be detected is 12mgKOH/g, adding 20 parts of trimellitic acid 1,2-anhydrides, carry out 45 minutes reaction under 235 ℃ of conditions of still temperature, is 76.4mgKOH/g until the acid number of reactant; After the acid number of reactant to be detected is 76.4mgKOH/g, add 3 parts of curing catalyst 18/16 tertiary amines, reduce to discharging after the mixing of carrying out 30 minutes under 200 ℃ of conditions in temperature.
The acid number of prepared vibrin is 77mgKOH/g, and second-order transition temperature is 60 ℃, and softening temperature is 110 ℃.
After the vibrin Resins, epoxy of the inventive method preparation, filler, pigment, auxiliary agent etc. are mixed, be made into powder coating through powder manufacturing apparatus, adopt electrostatic gun to be sprayed on the set iron, after solidifying through 190 ℃/15min, The performance test results sees Table 1.
Table 1: the coating performance test of the powder coating of vibrin preparation of the present invention
By table 1 performance data as can be known, the powder coating made from the resin of this inventive method preparation have that high gloss, levelling property are good, advantages such as good mechanical property, ornamental strong, water boiling resistance, warping resistance.
Claims (4)
1. indoor polyester resin for powder coating, it is characterized in that, the component of this vibrin and weight proportion are: 10～20 parts of neopentyl glycol, 2～5 parts of ethylene glycol, 10～20 parts of Diethylene Glycols, 1～3 part of TriMethylolPropane(TMP), 50～60 parts of terephthalic acids, 10～20 parts of trimellitic acid 1,2-anhydrides, 0.2～0.5 part of catalyzer, 1～3 part of curing catalyst.
2. prepare the method for the described a kind of indoor polyester resin for powder coating of claim 1, it is characterized in that, may further comprise the steps:
A, in reactor, with still temperature rise to 80 ℃, add 10～20 parts of neopentyl glycol, 2～5 parts of ethylene glycol, 10～20 parts of Diethylene Glycols, 1～3 part of TriMethylolPropane(TMP), 50～60 parts of terephthalic acids, 0.2～0.5 part of catalyzer;
B, temperature of reaction kettle progressively being risen to 235 ℃ by 2～3 ℃/15 minutes temperature rise rates, and reacted 100～120 minutes under 235 ℃ of temperature, is 20～25mgKOH/g until the acid number of reactant;
After the acid number of c, reactant to be detected is 20～25mgKOH/g, carrying out 30～60 minutes polycondensation under 0.090～0.095MPa vacuum, is 6～12mgKOH/g until the acid number of reactant;
After the acid number of d, reactant to be detected is 6～12mgKOH/g, adding 10～20 parts of trimellitic acid 1,2-anhydrides, carry out 30～60 minutes reaction under 235 ℃ of conditions of still temperature, is 67～77mgKOH/g until the acid number of reactant;
After the acid number of e, reactant to be detected is 67～77mgKOH/g, add 1～3 part of curing catalyst, reduce to discharging after the mixing of carrying out at least 30 minutes under 180～200 ℃ of conditions in temperature.
3. the method for a kind of indoor polyester resin for powder coating according to claim 2 is characterized in that, described catalyzer is a monobutyl zinc oxide.
4. the method for a kind of indoor polyester resin for powder coating according to claim 2 is characterized in that, described solidifying agent is 18/16 tertiary amine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100212720A CN103224617A (en) | 2012-01-31 | 2012-01-31 | Polyester resin used for indoor powder coating and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100212720A CN103224617A (en) | 2012-01-31 | 2012-01-31 | Polyester resin used for indoor powder coating and preparation method |
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| CN103224617A true CN103224617A (en) | 2013-07-31 |
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| CN2012100212720A Pending CN103224617A (en) | 2012-01-31 | 2012-01-31 | Polyester resin used for indoor powder coating and preparation method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104277208A (en) * | 2014-10-31 | 2015-01-14 | 安徽神剑新材料股份有限公司 | Low-temperature setting polyester resin |
| CN104387570A (en) * | 2014-10-31 | 2015-03-04 | 安徽神剑新材料股份有限公司 | Method for preparing low-temperature cured polyester resin |
| CN107082876A (en) * | 2017-05-24 | 2017-08-22 | 黄山市向荣新材料有限公司 | A kind of flame retardant type polyester resin, its preparation method and the powdery paints comprising it |
| CN109880494A (en) * | 2019-03-06 | 2019-06-14 | 安徽永利新材料科技有限公司 | A kind of indoor high rigidity, high glaze powder 50:50 polyester resin and preparation method thereof |
| CN112062941A (en) * | 2020-09-16 | 2020-12-11 | 浙江中法新材料有限公司 | 6040 type polyester resin and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05263018A (en) * | 1992-03-17 | 1993-10-12 | Nippon Ester Co Ltd | Polyester resin composition for powder coating |
| CN101704945A (en) * | 2009-11-18 | 2010-05-12 | 黄山永佳三利科技有限公司 | Polyester resin for mixed powder coating and preparation method thereof |
-
2012
- 2012-01-31 CN CN2012100212720A patent/CN103224617A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05263018A (en) * | 1992-03-17 | 1993-10-12 | Nippon Ester Co Ltd | Polyester resin composition for powder coating |
| CN101704945A (en) * | 2009-11-18 | 2010-05-12 | 黄山永佳三利科技有限公司 | Polyester resin for mixed powder coating and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104277208A (en) * | 2014-10-31 | 2015-01-14 | 安徽神剑新材料股份有限公司 | Low-temperature setting polyester resin |
| CN104387570A (en) * | 2014-10-31 | 2015-03-04 | 安徽神剑新材料股份有限公司 | Method for preparing low-temperature cured polyester resin |
| CN104277208B (en) * | 2014-10-31 | 2016-08-17 | 安徽神剑新材料股份有限公司 | A kind of low temperature curing polyester resin |
| CN107082876A (en) * | 2017-05-24 | 2017-08-22 | 黄山市向荣新材料有限公司 | A kind of flame retardant type polyester resin, its preparation method and the powdery paints comprising it |
| CN109880494A (en) * | 2019-03-06 | 2019-06-14 | 安徽永利新材料科技有限公司 | A kind of indoor high rigidity, high glaze powder 50:50 polyester resin and preparation method thereof |
| CN112062941A (en) * | 2020-09-16 | 2020-12-11 | 浙江中法新材料有限公司 | 6040 type polyester resin and preparation method thereof |
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Application publication date: 20130731 |