CN101676316A - Method for preparing cashew shell oil water-based epoxy resin curing agent - Google Patents
Method for preparing cashew shell oil water-based epoxy resin curing agent Download PDFInfo
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- CN101676316A CN101676316A CN200810042955A CN200810042955A CN101676316A CN 101676316 A CN101676316 A CN 101676316A CN 200810042955 A CN200810042955 A CN 200810042955A CN 200810042955 A CN200810042955 A CN 200810042955A CN 101676316 A CN101676316 A CN 101676316A
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- curing agent
- epoxy resin
- oil water
- shell oil
- based epoxy
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Abstract
The invention relates to a method for preparing cashew shell oil water-based epoxy resin curing agent, comprising: first, carrying out end capping on triethylene tetramine by using monoepoxy compound,and leading primary amine hydrogen to be transformed into secondary amine hydrogen; using bisphenol A type ethoxyline resin to have addition reaction together with the triethylene tetramine; using acetic acid for salifying, appropriately improving the hydrophilicity, and leading the modified polyamine curing agent to have good hydrophilic-lipophilic balance; and then, adding cardanol for proportioning, and obtaining the curing agent. The method solves the technical problem of environmental pollution caused by adding emulsifying agent into the ethoxyline resin in the prior art. The method canlead the ethoxyline resin with comparatively low molecular weight to be well emulsified to obtain stable emulsion, so that the aim of directly emulsifying the ethoxyline resin without additionally adding the emulsifying agent can be achieved, and the paint with low environmental pollution can be prepared.
Description
Technical field:
The present invention relates to chemical field, relate in particular to a kind of preparation method of macromolecular compound, is a kind of preparation method of cashew shell oil water-based epoxy resin curing agent specifically.
Background technology:
In the prior art, when using Resins, epoxy, need to add emulsifying agent Resins, epoxy is carried out modification, improve the performance of Resins, epoxy, but adding excessive emulsifying agent pollutes the environment.
Summary of the invention:
The object of the present invention is to provide a kind of preparation method of cashew shell oil water-based epoxy resin curing agent, the preparation method of described this cashew shell oil water-based epoxy resin curing agent will solve available technology adopting and add emulsifying agent and solve the technical problem that the performance of Resins, epoxy pollutes the environment.
The preparation method of a kind of cashew shell oil water-based epoxy resin curing agent of the present invention at first, carries out end-blocking with mono-epoxy compounds to triethylene tetramine, makes primary amine hydrogen become secondary amine hydrogen, reduces the consistency of active raising simultaneously and Resins, epoxy; Use bisphenol A type epoxy resin and triethylene tetramine addition again, further improve consistency with Resins, epoxy, reduce the activity of polyamine curing agent simultaneously, prolong working life, polyamine curing agent itself is water miscible, and wetting ability descends after addition, adopt acetate to make it salify, suitably improve its wetting ability, make the polyamine curing agent after the modification have good hydrophilic-lipophilic balance, add cardanol then and carry out proportioning and become solidifying agent.
Further, described end-capping reagent adopts phenyl glycidyl ether or benzyl glycidyl ether or butylglycidyl ether or is the phenyl glycidyl ether of 1: 1: 1 mixed and the mixed ether of butylglycidyl ether with weight ratio.
By adopting the solidifying agent of above-mentioned preparation, the relative grain size of the emulsion of Resins, epoxy can be reduced to and be lower than 1.5 μ m.
The present invention and prior art compare, and its effect is actively with tangible.The present invention is the low relatively molecular mass Resins, epoxy of emulsification well, obtains stable emulsion, does not add the just purpose of the direct emulsion epoxy resin of energy of emulsifying agent thereby reached, and can be made into the coating of low VOC and NHA P (no atmospheric pollution).Mainly be because: the size of emulsion particle and distribute very big to the property effect of emulsion and coating.Along with reducing of particle diameter, the bonding force of the gloss of filming, water tolerance, hardness, emulsion and pigment, the viscosity of emulsion and stability are improved, and along with the reducing of particle diameter, the time of drying of filming, the ventilation property of coating have also obtained corresponding raising.
Embodiment:
At first, with mono-epoxy compounds triethylene tetramine is carried out end-blocking, make primary amine hydrogen become secondary amine hydrogen, use bisphenol A type epoxy resin and triethylene tetramine addition again, under the room temperature above-mentioned synthetics adding is had in the reaction vessel of condensation and whipping appts, slowly add an amount of mono-epoxy compounds and note observing system temperature with funnel, remain under certain temperature of reaction, reaction 2h, get an amount of above-mentioned product adding and have in the reaction vessel of condensation and whipping appts, slowly add an amount of certain density Resins, epoxy ethereal solution with funnel when being heated to 40 ℃ of left and right sides, control reaction temperature is under a certain temperature, reaction 1h, finish the back and keep temperature of charge to add an amount of acetic acid, react 1h again, and then add the suitable quantity of water dilution, make solidifying agent be dissolved in water, obtain the moderate aqueous epoxy curing agent of solid matter content and viscosity.
After adopting solidifying agent of the present invention, the relative grain size of the emulsion of Resins, epoxy can be reduced to and be lower than 1.5 μ m, along with reducing of particle diameter, the bonding force of the gloss of filming, water tolerance, hardness, emulsion and pigment, the viscosity of emulsion and stability are improved, and along with the reducing of particle diameter, the time of drying of filming, the ventilation property of coating have also obtained corresponding raising.
Claims (2)
1. the preparation method of a cashew shell oil water-based epoxy resin curing agent, it is characterized in that: at first, with mono-epoxy compounds triethylene tetramine is carried out end-blocking, make primary amine hydrogen become secondary amine hydrogen, use bisphenol A type epoxy resin and triethylene tetramine addition again, adopt acetate to make it salify, add cardanol then and carry out proportioning and become solidifying agent.
2. the preparation method of a kind of cashew shell oil water-based epoxy resin curing agent as claimed in claim 1 is characterized in that: described end-capping reagent adopts phenyl glycidyl ether or benzyl glycidyl ether or butylglycidyl ether or is the phenyl glycidyl ether of 1: 1: 1 mixed and the mixed ether of butylglycidyl ether with weight ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810042955A CN101676316A (en) | 2008-09-16 | 2008-09-16 | Method for preparing cashew shell oil water-based epoxy resin curing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810042955A CN101676316A (en) | 2008-09-16 | 2008-09-16 | Method for preparing cashew shell oil water-based epoxy resin curing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101676316A true CN101676316A (en) | 2010-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810042955A Pending CN101676316A (en) | 2008-09-16 | 2008-09-16 | Method for preparing cashew shell oil water-based epoxy resin curing agent |
Country Status (1)
| Country | Link |
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| CN (1) | CN101676316A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105330823A (en) * | 2015-12-16 | 2016-02-17 | 太仓康盛化工有限公司 | Flame-retardant epoxy resin curing agent |
| CN107636378A (en) * | 2015-05-28 | 2018-01-26 | 印度电钢有限公司 | With the improved corrosion-resistant buried nodular cast iron pipe fittings of external skin and preparation method |
-
2008
- 2008-09-16 CN CN200810042955A patent/CN101676316A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107636378A (en) * | 2015-05-28 | 2018-01-26 | 印度电钢有限公司 | With the improved corrosion-resistant buried nodular cast iron pipe fittings of external skin and preparation method |
| CN107636378B (en) * | 2015-05-28 | 2019-07-26 | 印度电钢有限公司 | With the improved corrosion-resistant buried nodular cast iron pipe fittings of external skin and production method |
| CN105330823A (en) * | 2015-12-16 | 2016-02-17 | 太仓康盛化工有限公司 | Flame-retardant epoxy resin curing agent |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100324 |