CN105801761A - Synthetic method of unsaturated polyester - Google Patents
Synthetic method of unsaturated polyester Download PDFInfo
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- CN105801761A CN105801761A CN201410839257.6A CN201410839257A CN105801761A CN 105801761 A CN105801761 A CN 105801761A CN 201410839257 A CN201410839257 A CN 201410839257A CN 105801761 A CN105801761 A CN 105801761A
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- unsaturated polyester
- synthetic method
- acid
- polymerization inhibitor
- anhydride
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Abstract
The invention provides a synthetic method of unsaturated polyester. The concrete technical scheme is as follows: binary acid, dihydric alcohol and a proper amount of polymerization inhibitor are added into a reactor, and nitrogen is pumped in; the reactor is heated to 160 DEG C with stirring for reflux, acid value is detected, when the acid value is 180-220mgKOH/g, water begins to flow out; the temperature is heated to 175-200 DEG C; when the acid value reaches a set value, the reaction is stopped, the temperature is reduced to about 80 DEG C, 20-30% of an active diluent and a proper amount of a polymerization inhibitor are added for discharging materials. The unsaturated polyester prepared by the synthetic method is nonflammable, water or a thickening agent can be conveniently used for controlling rheological property, toxicity, irritation and other problems do not exist, and the unsaturated polyester does not pollute the environment and influence health of human body.
Description
Technical field
The invention belongs to chemical field, particularly relate to the synthetic method of a kind of unsaturated polyester (UP).
Background technology
Light-cured resin, also known as photosensitive resin, is a kind of by after light irradiation, physical and chemical changes and then the oligomer of crosslinking curing can occur rapidly in the short period of time.Light-cured resin is the photoresist that a kind of relative molecular mass is relatively low, has the reactive group that can carry out photocuring, such as unsaturated double-bond or epoxy radicals etc..Light-cured resin is the matrix resin of photocureable coating, it with light trigger, reactive diluent and various additive compound, namely constitute photocureable coating.
Unsaturated polyester (UP) (unstaturatepolyester, UPE) it is the conventional solvent-borne type light-cured resin of a class, UPE refers in strand containing straight-chain or the branched polyester macromolecule that can react carbon-carbon double bond, is mainly prepared through polycondensation reaction by unsaturated dibasic acid or anhydride and dihydroxylic alcohols.Unsaturated dibasic acid or anhydride mainly have maleic acid or anhydride, fumaric acid or anhydride etc..
Summary of the invention
The technical problem to be solved in the present invention is to provide the synthetic method of a kind of unsaturated polyester (UP).
The technical solution adopted in the present invention is as follows:
A kind of synthetic method of unsaturated polyester (UP), it is characterized in that, binary acid, dihydroxylic alcohols and appropriate polymerization inhibitor are joined in reactor, passes into nitrogen, stirring is warmed up to 160 DEG C of backflows, survey acid number to 180～220mgKOH/g, start water outlet, be warming up to 175 ~ 200 DEG C, when acid number reaches setting value, stopped reaction, is cooled to about 80 DEG C, adds 20% ~ 30% reactive diluent and appropriate polymerization inhibitor discharging.
Further, described binary acid can be maleic acid or maleic anhydride, it is also possible to for fumaric acid or fumaric acid anhydride.
Further, described dihydroxylic alcohols can be any one in ethylene glycol, multicondensed ethylene glycol, propylene glycol, polypropylene glycol, BDO.
Further, described reactive diluent is at least one in styrene or acrylate.
Further, described polymerization inhibitor is monounsaturated dicarboxylic acid or anhydride.
Further, the addition of described polymerization inhibitor is 2 ~ 3%.
Technique effect acquired by the present invention is:
Utilizing the unsaturated polyester (UP) obtained by the synthetic method of a kind of unsaturated polyester (UP) of the present invention to have the advantage that nonflammable, available water or thickening agent control rheological characteristic, the problem such as avirulence, zest easily, and environmentally safe, on health without impact.
Detailed description of the invention
Embodiment 1, for phthalic anhydride and dihydroxylic alcohols synthesis unsaturated polyester (UP).
Synthesis technique:Appropriate phthalic anhydride is joined in reactor with dihydroxylic alcohols and appropriate polymerization inhibitor, pass into nitrogen, stirring is warmed up to 160 DEG C of backflows, survey acid number to 180～220mgKOH/g, start water outlet, be warming up to 175 ~ 200 DEG C, when acid number reaches setting value, stopped reaction, is cooled to about 80 DEG C, adds 20% ~ 30% reactive diluent and appropriate polymerization inhibitor discharging.
Described polymerization inhibitor is monounsaturated dicarboxylic acid or anhydride, and its addition is 2 ~ 3%(mass fraction).
Claims (6)
1. the synthetic method of a unsaturated polyester (UP), it is characterized in that, binary acid, dihydroxylic alcohols and appropriate polymerization inhibitor are joined in reactor, passes into nitrogen, stirring is warmed up to 160 DEG C of backflows, survey acid number to 180～220mgKOH/g, start water outlet, be warming up to 175 ~ 200 DEG C, when acid number reaches setting value, stopped reaction, is cooled to about 80 DEG C, adds 20% ~ 30% reactive diluent and appropriate polymerization inhibitor discharging.
2. the synthetic method of a kind of unsaturated polyester (UP) according to claim 1, it is characterised in that described binary acid can be maleic acid or maleic anhydride, it is also possible to for fumaric acid or fumaric acid anhydride.
3. the synthetic method of a kind of unsaturated polyester (UP) according to claim 1, it is characterised in that described dihydroxylic alcohols can be any one in ethylene glycol, multicondensed ethylene glycol, propylene glycol, polypropylene glycol, BDO.
4. the synthetic method of a kind of unsaturated polyester (UP) according to claim 1, it is characterised in that described reactive diluent is at least one in styrene or acrylate.
5. the synthetic method of a kind of unsaturated polyester (UP) according to claim 1, it is characterised in that described polymerization inhibitor is monounsaturated dicarboxylic acid or anhydride.
6. the synthetic method of a kind of unsaturated polyester (UP) according to claim 5, it is characterised in that the addition of described polymerization inhibitor is 2 ~ 3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839257.6A CN105801761A (en) | 2014-12-30 | 2014-12-30 | Synthetic method of unsaturated polyester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839257.6A CN105801761A (en) | 2014-12-30 | 2014-12-30 | Synthetic method of unsaturated polyester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105801761A true CN105801761A (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410839257.6A Pending CN105801761A (en) | 2014-12-30 | 2014-12-30 | Synthetic method of unsaturated polyester |
Country Status (1)
| Country | Link |
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| CN (1) | CN105801761A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106800645A (en) * | 2017-01-06 | 2017-06-06 | 南京林业大学 | A kind of synthetic method of air-drying property unsaturated polyester (UP) |
| CN109180921A (en) * | 2018-09-11 | 2019-01-11 | 惠州市固德尔合成材料有限公司 | A kind of neighbour's benzene-type photocuring unsaturated polyester resin and preparation method thereof |
-
2014
- 2014-12-30 CN CN201410839257.6A patent/CN105801761A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106800645A (en) * | 2017-01-06 | 2017-06-06 | 南京林业大学 | A kind of synthetic method of air-drying property unsaturated polyester (UP) |
| CN106800645B (en) * | 2017-01-06 | 2018-10-16 | 南京林业大学 | A kind of synthetic method of air-drying property unsaturated polyester (UP) |
| CN109180921A (en) * | 2018-09-11 | 2019-01-11 | 惠州市固德尔合成材料有限公司 | A kind of neighbour's benzene-type photocuring unsaturated polyester resin and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160727 |