CN105273174A - Water-soluble saturated polyester resin and preparation method thereof - Google Patents
Water-soluble saturated polyester resin and preparation method thereof Download PDFInfo
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- CN105273174A CN105273174A CN201510701395.2A CN201510701395A CN105273174A CN 105273174 A CN105273174 A CN 105273174A CN 201510701395 A CN201510701395 A CN 201510701395A CN 105273174 A CN105273174 A CN 105273174A
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- soluble saturated
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Abstract
The invention provides water-soluble saturated polyester resin and a preparation method thereof. The water-soluble saturated polyester resin is prepared from raw materials through a melt polycondensation reaction in percentage by weight as follows: 35%-40% of dihydric alcohol, 5%-15% of trihydric alcohol, 3%-10% of binary acid with a sulfonate group, 45%-55% of binary acid without a sulfonate group and 7%-10% of a cosolvent. The water-soluble saturated polyester resin does not need to be diluted by an organic solvent in the construction process and meets the requirement of environment protection; the water-soluble saturated polyester resin prepared from components in the proportion has the advantages that the source of raw materials is wide, synthesis is simple and the like; a prepared sulfonic acid type water-based polyester coating is used for preparation of the double-component coating and has good luster, excellent chemical resistance and good flexibility.
Description
Technical field
The present invention relates to a kind of vibrin, more particularly, relate to a kind of water-soluble saturated polyester resin and preparation method thereof.
Background technology
Along with the development of society and the raising of people's environmental consciousness, environment protection becomes one of topic received much concern.Therefore the water-borne coatings of low toxicity, environmental protection obtains people and pays close attention to widely.Waterborne polyester as one of water-borne coatings has the advantages such as gloss is high, strong adhesion, fullness ratio are high, shock-resistance is good, VOC quantity discharged is low, namely water-based stoving paint can be configured to water soluble amino resin, also can be configured to can the water-borne wood coating of ambient cure but general polyester comparatively facile hydrolysis with hydrophilic polyisocyanate, cause the application of waterborne polyester to receive certain restriction.
Aqueous polyester resin is one of focus of current coating research and development as a kind of environment-friendly type coating.At present, the main preparation methods of water-soluble polyester has following several: the carboxyl that (1) makes vibrin band excessive, with in neutralizing agent (amine or ammonia) and salify and have water-soluble; (2) vibrin is made to contain strong hydrophilicity group (as sulfonic group etc.).
And the waterborne polyester wherein with sulfonic acid type strongly hydrophilic matrix in preparation process without the need in amine and, without the need to organic solvent diluting in construction, more meet the requirement of environmental protection, but the properties of the waterborne polyester of existing band sulfonic acid type strongly hydrophilic matrix is poor, is badly in need of improving.
Summary of the invention
Instant invention overcomes shortcoming of the prior art, provide a kind of water-soluble saturated polyester resin and preparation method thereof, its properties is excellent, and without the need to organic solvent diluting in construction process, more meets the requirement of environmental protection.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of water-soluble saturated polyester resin, the raw material of following weight percent content obtains through melt polycondensation reaction:
The dibasic alcohol of 35 ~ 40%, the trivalent alcohol of 5%-15%, the diprotic acid with sulfonate groups of 3% ~ 10%, the diprotic acid not with sulfonate groups of 45% ~ 55%, the solubility promoter of 7% ~ 10%.
Further, described dibasic alcohol is one or more mixtures of neopentyl glycol, 1,6-hexylene glycol, propylene glycol, 1,4 cyclohexane dimethanol.
Further, described trivalent alcohol is TriMethylolPropane(TMP).
Further, the diprotic acid of described described band sulfonate groups is 5-sodium sulfo isophthalate, Sodium Dimethyl Isophthalate-5-sulfonate.
Further, described diprotic acid is m-phthalic acid or adipic acid.
Further, described solubility promoter is ethylene glycol ethyl ether, butyl glycol ether, diethylene glycol ether, butyl or Virahol.
A preparation method for water-soluble saturated polyester resin, comprises the following steps:
A. dibasic alcohol and trivalent alcohol are joined in reactor, slowly be warming up to material to melt, stir, add the diprotic acid with sulfonate groups and the diprotic acid accounting for the diprotic acid total amount 40% ~ 50% not with sulfonate groups again, pass into nitrogen, slowly heat up, control heat-up rate, sluggish is carried out, and outlet temperature controls at 170-180 DEG C, controls acid value and is less than 50mgKOH/g;
B. be cooled to 140 DEG C, add the remaining diprotic acid not with sulfonate groups and continue to heat up, react at 210-220 DEG C, make acid value be less than 10mgKOH/g; Cooling, adds solubility promoter, adds appropriate deionized water and contains for 70-50% to solid, stir, obtain water-soluble saturated polyester resin after stirring.
Compared with prior art, the invention has the beneficial effects as follows:
Water-soluble saturated polyester resin of one of the present invention and preparation method thereof, obtained through melt polycondensation reaction by the raw material of following weight percent content: the dibasic alcohol of 35 ~ 40%, the trivalent alcohol of 5%-15%, the diprotic acid with sulfonate groups of 3% ~ 10%, the diprotic acid not with sulfonate groups of 45% ~ 55%, the solubility promoter of 7% ~ 10%, without the need to organic solvent diluting in construction process, more meet the requirement of environmental protection, and by water-soluble saturated polyester resin that above-mentioned composition and proportioning obtain, there are raw material sources extensive, synthesize the advantages such as simple, obtained sulfonic acid type water-based polyester coating has good gloss for preparing dual-component coating, excellent chemical resistance and preferably snappiness.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Embodiment 1:
A. the neopentyl glycol of 203g and the Glycerin of 44g are joined be equipped with agitator, prolong, thermometer, reactor in, slowly be warming up to material to melt, stir, add 80g m-phthalic acid and 54.5g m-phthalic acid-5 sodium sulfonate again, continue to heat up, control heat-up rate, sluggish is carried out, outlet temperature controls at 170-180 DEG C, controls acid value and is less than 50mgKOH/g;
B. be cooled to 140 DEG C, add 80g m-phthalic acid and 111g hexanodioic acid continuation intensification, react at 210-220 DEG C, make acid value be less than 10mgKOH/g; Cooling, adds 52g butyl glycol ether, adds appropriate deionized water and stir containing being 50% to solid, by filtering the aqueous polyester resin obtaining transparent inorganic tool impurity after stirring.
The water-based saturated resin prepared by above-mentioned example and the special full methyl-etherified aminoresin 303 of cyanogen are with (3 ~ 5): 1 mixes, add water move to proper viscosity spray plate (base material tinplate), 150 DEG C of baking 30min, obtain smooth surface, hard smearing, hardness of film is H, adhesion 1 grade, and shock resistance (positive/negative) is 50/50cm, resistant to acetone more than 300 times, water-fast is 1 month.
Embodiment 2:
A. by 184g1,6-neopentyl glycol, 44g Glycerin and 234gCarduraE10p join be equipped with agitator, prolong, thermometer, reactor in, slowly be warming up to material to melt, stir, then add 80g m-phthalic acid and 54.5g m-phthalic acid-5 sodium sulfonate, continue to heat up, control heat-up rate, sluggish is carried out, and outlet temperature controls at 170-180 DEG C, controls acid value and is less than 50mgKOH/g;
B. be cooled to 140 DEG C, add 102g m-phthalic acid and 111g hexanodioic acid continuation intensification, react at 210-220 DEG C, make acid value be less than 10mgKOH/g; Cooling, adds 52g butyl glycol ether, adds appropriate deionized water and stir containing being 50% to solid, by filtering the aqueous polyester resin obtaining transparent inorganic tool impurity after stirring.
The water-based saturated resin prepared by above-mentioned example and the special full methyl-etherified aminoresin 303 of cyanogen are with (3 ~ 5): 1 mixes, add water move to proper viscosity spray plate (base material tinplate), 150 DEG C of baking 30min, obtain smooth surface, hard smearing, hardness of film is 2H, sticking power 0 grade, and shock resistance (positive/negative) is 50/50cm, resistant to acetone more than 300 times, water-fast is 1 month
Last it is noted that these are only the preferred embodiments of the present invention; be not limited to the present invention; although with reference to embodiment to invention has been detailed description; for a person skilled in the art; it still can be modified to the technical scheme described in foregoing embodiments; or equivalent replacement is carried out to wherein portion of techniques feature; but it is within the spirit and principles in the present invention all; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a water-soluble saturated polyester resin, is characterized in that, the raw material of following weight percent content obtains through melt polycondensation reaction:
The dibasic alcohol of 35 ~ 40%, the trivalent alcohol of 5%-15%, the diprotic acid with sulfonate groups of 3% ~ 10%, the diprotic acid not with sulfonate groups of 45% ~ 55%, the solubility promoter of 7% ~ 10%.
2. the water-soluble saturated polyester resin of one according to claim 1, is characterized in that, described dibasic alcohol is one or more mixtures of neopentyl glycol, 1,6-hexylene glycol, propylene glycol, 1,4 cyclohexane dimethanol.
3. the preparation method of aqueous coating polyester according to claim 1, is characterized in that, described trivalent alcohol is TriMethylolPropane(TMP).
4. the water-soluble saturated polyester resin of one according to claim 1, is characterized in that, the diprotic acid of described described band sulfonate groups is 5-sodium sulfo isophthalate, Sodium Dimethyl Isophthalate-5-sulfonate.
5. the preparation method of aqueous coating polyester according to claim 1, is characterized in that, described diprotic acid is m-phthalic acid or adipic acid.
6. the water-soluble saturated polyester resin of one according to claim 1, is characterized in that, described solubility promoter is ethylene glycol ethyl ether, butyl glycol ether, diethylene glycol ether, butyl or Virahol.
7. the preparation method of a kind of water-soluble saturated polyester resin according to claim 1, is characterized in that, comprise the following steps:
A. dibasic alcohol and trivalent alcohol are joined in reactor, slowly be warming up to material to melt, stir, add the diprotic acid with sulfonate groups and the diprotic acid accounting for the diprotic acid total amount 40% ~ 50% not with sulfonate groups again, pass into nitrogen, slowly heat up, control heat-up rate, sluggish is carried out, and outlet temperature controls at 170-180 DEG C, controls acid value and is less than 50mgKOH/g;
B. be cooled to 140 DEG C, add the remaining diprotic acid not with sulfonate groups and continue to heat up, react at 210-220 DEG C, make acid value be less than 10mgKOH/g; Cooling, adds solubility promoter, adds appropriate deionized water and contains for 70-50% to solid, stir, obtain water-soluble saturated polyester resin after stirring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510701395.2A CN105273174A (en) | 2015-10-22 | 2015-10-22 | Water-soluble saturated polyester resin and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510701395.2A CN105273174A (en) | 2015-10-22 | 2015-10-22 | Water-soluble saturated polyester resin and preparation method thereof |
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| CN105273174A true CN105273174A (en) | 2016-01-27 |
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| CN201510701395.2A Pending CN105273174A (en) | 2015-10-22 | 2015-10-22 | Water-soluble saturated polyester resin and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107312431A (en) * | 2017-08-24 | 2017-11-03 | 蒋磊 | A kind of water-base resin coating and preparation method thereof |
| CN110183678A (en) * | 2019-06-14 | 2019-08-30 | 长沙学院 | A kind of aqueous hyperbranched polyester resin and its preparation method and application |
| CN111378102A (en) * | 2020-04-22 | 2020-07-07 | 江门市制漆厂有限公司 | Hydrolysis-resistant water-based polyester resin and preparation method and application thereof |
-
2015
- 2015-10-22 CN CN201510701395.2A patent/CN105273174A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107312431A (en) * | 2017-08-24 | 2017-11-03 | 蒋磊 | A kind of water-base resin coating and preparation method thereof |
| CN110183678A (en) * | 2019-06-14 | 2019-08-30 | 长沙学院 | A kind of aqueous hyperbranched polyester resin and its preparation method and application |
| CN110183678B (en) * | 2019-06-14 | 2022-01-25 | 长沙学院 | Water-based hyperbranched polyester resin and preparation method and application thereof |
| CN111378102A (en) * | 2020-04-22 | 2020-07-07 | 江门市制漆厂有限公司 | Hydrolysis-resistant water-based polyester resin and preparation method and application thereof |
| CN111378102B (en) * | 2020-04-22 | 2022-06-10 | 江门市制漆厂有限公司 | Hydrolysis-resistant water-based polyester resin and preparation method and application thereof |
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Application publication date: 20160127 |