CN104387569A - Polyester resin - Google Patents
Polyester resin Download PDFInfo
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- CN104387569A CN104387569A CN201410608848.2A CN201410608848A CN104387569A CN 104387569 A CN104387569 A CN 104387569A CN 201410608848 A CN201410608848 A CN 201410608848A CN 104387569 A CN104387569 A CN 104387569A
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- acid
- vibrin
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- polyester resin
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Abstract
The invention provides polyester resin. The polyester resin is prepared from the following raw material components in parts by mass: 1600-1800 parts of neopentyl glycol, 2600-2900 parts of acid, 5 parts of a catalyst and 100-200 parts of a water repellent agent. Powder paint prepared by adopting the polyester resin can be subjected to high temperature baking and curing to form a powder coating with obvious whitening resistance, and protection capability and appearance effect of the powder coating to a substrate are maintained.
Description
Technical field
The invention belongs to organic coating technical field, be specifically related to a kind of vibrin.
Background technology
In recent years, powder coating in application process, especially outdoor powder coating, because outdoor weather is changeable, high humidity, in damp and hot environment, powder coating easily absorbs moisture and forms white mottling (whiting) on surface, affects use and the appearance property of powder coating.Improve the anti-whitening resistance of powder coating, just need to carry out modification to powder coating polyester, improve its hydrophobicity, reduce coating to the absorption of Environmental Water, thus improve coating whiting.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of vibrin, the powder coating using this vibrin to obtain has good anti-whitening resistance.
The technical solution adopted in the present invention is:
A kind of vibrin, its feed composition and mass parts thereof are: neopentyl glycol 1600-1800 part, sour 2600-2900 part, catalyzer 5 parts, hydrophobizing agent 100-200 part;
Described acid is selected from one or more in terephthalic acid, m-phthalic acid, cyclohexane cyclohexanedimethanodibasic, hexanodioic acid; Be preferably terephthalic acid and m-phthalic acid, " terephthalic acid and/or m-phthalic acid " and " cyclohexane cyclohexanedimethanodibasic and/or hexanodioic acid "
Described catalyzer is Mono-n-butyltin;
Described hydrophobizing agent is modified organic silicon;
Described vibrin is prepared by the following method, and concrete steps are:
(1) first stage: the alcohol of formula ratio is dropped into reactor, be heated to 110 ~ 125 DEG C, treat that alcohol melts completely, stir with the rotating speed of 130 ~ 150r/min, drop into the catalyzer of acid and formula ratio again, be warming up to 180 DEG C, be warming up to 245 ~ 250 DEG C with the heat-up rate of 5 DEG C/30min, maintain acid number and be less than 15mgKOH/g;
(2) subordinate phase: be cooled to 210 ~ 220 DEG C, drop into acid, be warming up to 235 ~ 240 DEG C, maintenance acid number is 34 ~ 39mgKOH/g;
The acid of described first stage input is the mixture of terephthalic acid or terephthalic acid and cyclohexane cyclohexanedimethanodibasic, and input amount is 2300-2400 part; The acid that described subordinate phase drops into is the mixture of m-phthalic acid or m-phthalic acid and hexanodioic acid, and input amount is 300-500 part, and the amount sum of the acid that first stage and subordinate phase are dropped into is 2600-2900 part;
The mass ratio of the terephthalic acid that the described first stage drops into and cyclohexane cyclohexanedimethanodibasic is 900-100:0-10, and the mass ratio of the m-phthalic acid that subordinate phase drops into and hexanodioic acid is 75-100:0-25;
(3) phase III: be cooled to 220 ~ 230 DEG C and vacuumize, vacuum tightness is-0.09 ~-0.1MPa, and maintaining acid number is 21 ~ 24mgKOH/g.
(4) drop in resin by the hydrophobizing agent of formula ratio, 180 DEG C maintain 20min, blowing.
Compared with prior art, remarkable advantage of the present invention is: the powder coating prepared by vibrin of the present invention, the powder coating formed after high bake solidification, has anti-whitening resistance significantly.Maintain powder coating coating to the protective value of base material and appearance effect.
Embodiment
Embodiment 1
A kind of vibrin, its feed composition and quality thereof are in table 1.
The preparation of vibrin:
First stage: the alcohol of formula ratio is dropped into reactor, is heated to 110 DEG C, treats that alcohol melts completely, stir with the rotating speed of 130r/min, then drop into the esterifying catalyst of acid and formula ratio, be warming up to 180 DEG C, be warming up to 245 DEG C with the heat-up rate of 5 DEG C/30min, maintain acid number 10.2mgKOH/g;
Subordinate phase: be cooled to 210 DEG C, drop into acid, be warming up to 235 DEG C, maintenance acid number is 35.1mgKOH/g;
Phase III: be cooled to 220 DEG C and vacuumize, vacuum tightness is-0.099MPa, and maintenance acid number is 21.8mgKOH/g.
Fourth stage: dropped into by the hydrophobizing agent of formula ratio in resin, 180 DEG C maintain 20min, blowing.
Embodiment 2
A kind of vibrin, its feed composition and quality thereof are in table 1.
The preparation of vibrin:
First stage: the alcohol of formula ratio is dropped into reactor, is heated to 125 DEG C, treats that alcohol melts completely, stir with the rotating speed of 150r/min, then drop into acid and the esterifying catalyst of formula ratio, be warming up to 180 DEG C, be warming up to 250 DEG C with the heat-up rate of 5 DEG C/30min, maintain acid number 11.2mgKOH/g;
Subordinate phase: be cooled to 220 DEG C, drop into acid, be warming up to 240 DEG C, maintenance acid number is 36.1mgKOH/g;
Phase III: be cooled to 230 DEG C and vacuumize, vacuum tightness is-0.1MPa, and maintenance acid number is 22.1mgKOH/g.
Fourth stage: dropped into by the hydrophobizing agent of formula ratio in resin, 180 DEG C maintain 20min, blowing.
Embodiment 3
A kind of vibrin, its feed composition and quality thereof are in table 1.
The preparation of vibrin:
First stage: the alcohol of formula ratio is dropped into reactor, is heated to 115 DEG C, treats that alcohol melts completely, stir with the rotating speed of 140r/min, then drop into acid and the esterifying catalyst of formula ratio, be warming up to 180 DEG C, be warming up to 248 DEG C with the heat-up rate of 5 DEG C/30min, maintain acid number 12.5mgKOH/g;
Subordinate phase: be cooled to 215 DEG C, drop into acid, be warming up to 237 DEG C, maintenance acid number is 39mgKOH/g;
Phase III: be cooled to 225 DEG C and vacuumize, vacuum tightness is-0.099MPa, and maintenance acid number is 25.0mgKOH/g.
Fourth stage: dropped into by the hydrophobizing agent of formula ratio in resin, 180 DEG C maintain 20min, blowing.
Embodiment 4
A kind of vibrin, its feed composition and quality thereof are in table 1.
The preparation of vibrin:
First stage: the alcohol of formula ratio is dropped into reactor, is heated to 120 DEG C, treats that alcohol melts completely, stir with the rotating speed of 135r/min, then drop into acid and the esterifying catalyst of formula ratio, be warming up to 180 DEG C, be warming up to 245 DEG C with the heat-up rate of 5 DEG C/30min, maintain acid number 14.9mgKOH/g;
Subordinate phase: be cooled to 218 DEG C, drop into acid, be warming up to 236 DEG C, maintenance acid number is 38.5mgKOH/g;
Phase III: be cooled to 227 DEG C and vacuumize, vacuum tightness is-0.1MPa, and maintenance acid number is 24.1mgKOH/g.
Fourth stage: dropped into by the hydrophobizing agent of formula ratio in resin, 180 DEG C maintain 20min, blowing.
Embodiment 5
A kind of vibrin, its feed composition and quality thereof are in table 1.
The preparation of vibrin:
First stage: the alcohol of formula ratio is dropped into reactor, is heated to 122 DEG C, treats that alcohol melts completely, stir with the rotating speed of 145r/min, then drop into acid and the esterifying catalyst of formula ratio, be warming up to 180 DEG C, be warming up to 248 DEG C with the heat-up rate of 5 DEG C/30min, maintain acid number 13.5mgKOH/g;
Subordinate phase: be cooled to 216 DEG C, drop into acid, be warming up to 238 DEG C, maintenance acid number is 38.3mgKOH/g;
Phase III: be cooled to 222 DEG C and vacuumize, vacuum tightness is-0.1MPa, and maintenance acid number is 23.5mgKOH/g.
Fourth stage: dropped into by the hydrophobizing agent of formula ratio in resin, 180 DEG C maintain 20min, blowing.
The input amount of embodiment 1 ~ 5 acid, alcohol, esterifying catalyst and hydrophobizing agent is in table 1.
The each material input amount of table 1 (unit: g)
The performance of vibrin A ~ E that testing example 1 ~ 5 is obtained, index is as shown in table 2.
Table 2
| Index | Resin A | Resin B | Resin C | Resin D | Resin E |
| Acid number (mgKOH/g) | 21.8 | 22.1 | 25.0 | 24.1 | 23.5 |
| Viscosity (mpa.s/200 DEG C) | 6500 | 7300 | 6100 | 6800 | 6700 |
| Second-order transition temperature (DEG C) | 58.5 | 67.8 | 61.3 | 62.0 | 60.1 |
Vibrin A ~ the E obtained according to embodiment 1 ~ 5 method is applied on powder coating respectively.Application method is: by vibrin, solidifying agent Primid, flow agent PV88, filler barium sulfate, titanium dioxide, auxiliary agent st-yrax, optical brightener 701 by formula rate Homogeneous phase mixing, extruded by twin screw extruder again, compressing tablet, cooling, fragmentation, to sieve, be prepared into powder coating, and the mode of electrostatic spraying used for powder coating is sprayed on model.Condition of cure is 180 DEG C/15min.Each component proportion is in table 3.
Each component proportion (the unit: g) of table 3
Coating obtained for group 1 ~ 5 is carried out performance test according to GB or industry universal method.Gel time is tested according to GB/T16995-1997, and gloss is tested according to GB/T 9754-2007, impacts and tests according to GB/T 1732-1993, levelling and anti-whitening resistancely to test according to industry universal method.Test result is in table 4.
Table 4
Experimental result shows, the polyester obtained by the present invention, after being prepared into powder coating, has good anti-whitening resistance.In the outdoor application process of powder coating, excellent anti-whiting performance is not only conducive to the protection to base material, also maintains the appearance effect of whole coat side.Can find out, possessing in good anti-whiting performance basis, the polyester obtained by the present invention also has good mechanical property and flat appearance simultaneously.
Claims (5)
1. a vibrin, its feed composition and mass parts thereof are: neopentyl glycol 1600-1800 part, sour 2600-2900 part, catalyzer 5 parts, hydrophobizing agent 100-200 part.
2. vibrin as claimed in claim 1, is characterized in that: described acid is selected from one or more in terephthalic acid, m-phthalic acid, cyclohexane cyclohexanedimethanodibasic, hexanodioic acid.
3. vibrin as claimed in claim 2, is characterized in that: described acid is selected from terephthalic acid and m-phthalic acid, " terephthalic acid and/or m-phthalic acid " and " cyclohexane cyclohexanedimethanodibasic and/or hexanodioic acid ".
4. vibrin as claimed in claim 1, is characterized in that: described catalyzer is Mono-n-butyltin.
5. vibrin as claimed in claim 1, is characterized in that: described hydrophobizing agent is modified organic silicon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410608848.2A CN104387569A (en) | 2014-10-31 | 2014-10-31 | Polyester resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410608848.2A CN104387569A (en) | 2014-10-31 | 2014-10-31 | Polyester resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104387569A true CN104387569A (en) | 2015-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410608848.2A Pending CN104387569A (en) | 2014-10-31 | 2014-10-31 | Polyester resin |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106084190A (en) * | 2016-06-30 | 2016-11-09 | 高海燕 | The preparation technology of the polyester resin that a kind of low temperature curing type is used for powder coating |
| CN109554079A (en) * | 2018-12-05 | 2019-04-02 | 安徽神剑新材料股份有限公司 | A kind of powdery paints that hydroxyalkyl amide solidifies anti-pin hole polyester resin and thus prepares |
Citations (7)
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|---|---|---|---|---|
| US5958601A (en) * | 1997-01-31 | 1999-09-28 | Seydel Companies, Inc. | Water dispersible/redispersible hydrophobic polyester resins and their application in coatings |
| CN101139434A (en) * | 2007-09-30 | 2008-03-12 | 大连理工大学 | Fluorinated polyesters with low surface energy and preparation method thereof |
| CN101143921A (en) * | 2007-08-03 | 2008-03-19 | 安徽神剑新材料有限公司 | Preparation method for thermosetting pure polyester resin |
| CN101775127A (en) * | 2009-12-30 | 2010-07-14 | 中国纺织科学研究院 | Hydrophobic modified polyester and preparation method thereof |
| CN102167807A (en) * | 2011-03-11 | 2011-08-31 | 安徽神剑新材料股份有限公司 | Preparation method of modified hydroxyl polyester resin |
| CN102174176A (en) * | 2011-03-11 | 2011-09-07 | 安徽神剑新材料股份有限公司 | Preparation method of thermosetting type pure polyester resin capable of resisting high-temperature yellowing |
| CN103755934A (en) * | 2013-12-21 | 2014-04-30 | 安徽神剑新材料股份有限公司 | Method for preparing polyester resin used in frostless type powder coating |
-
2014
- 2014-10-31 CN CN201410608848.2A patent/CN104387569A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5958601A (en) * | 1997-01-31 | 1999-09-28 | Seydel Companies, Inc. | Water dispersible/redispersible hydrophobic polyester resins and their application in coatings |
| CN101143921A (en) * | 2007-08-03 | 2008-03-19 | 安徽神剑新材料有限公司 | Preparation method for thermosetting pure polyester resin |
| CN101139434A (en) * | 2007-09-30 | 2008-03-12 | 大连理工大学 | Fluorinated polyesters with low surface energy and preparation method thereof |
| CN101775127A (en) * | 2009-12-30 | 2010-07-14 | 中国纺织科学研究院 | Hydrophobic modified polyester and preparation method thereof |
| CN102167807A (en) * | 2011-03-11 | 2011-08-31 | 安徽神剑新材料股份有限公司 | Preparation method of modified hydroxyl polyester resin |
| CN102174176A (en) * | 2011-03-11 | 2011-09-07 | 安徽神剑新材料股份有限公司 | Preparation method of thermosetting type pure polyester resin capable of resisting high-temperature yellowing |
| CN103755934A (en) * | 2013-12-21 | 2014-04-30 | 安徽神剑新材料股份有限公司 | Method for preparing polyester resin used in frostless type powder coating |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106084190A (en) * | 2016-06-30 | 2016-11-09 | 高海燕 | The preparation technology of the polyester resin that a kind of low temperature curing type is used for powder coating |
| CN109554079A (en) * | 2018-12-05 | 2019-04-02 | 安徽神剑新材料股份有限公司 | A kind of powdery paints that hydroxyalkyl amide solidifies anti-pin hole polyester resin and thus prepares |
| CN109554079B (en) * | 2018-12-05 | 2021-04-09 | 安徽神剑新材料股份有限公司 | Hydroxyalkyl amide cured pinhole-resistant polyester resin and powder coating prepared from same |
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