CN106009934B - Resin color paste and production process thereof - Google Patents
Resin color paste and production process thereof Download PDFInfo
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- CN106009934B CN106009934B CN201610344718.1A CN201610344718A CN106009934B CN 106009934 B CN106009934 B CN 106009934B CN 201610344718 A CN201610344718 A CN 201610344718A CN 106009934 B CN106009934 B CN 106009934B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D17/00—Pigment pastes, e.g. for mixing in paints
- C09D17/002—Pigment pastes, e.g. for mixing in paints in organic medium
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Epoxy Resins (AREA)
- Paints Or Removers (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
Abstract
The invention discloses a resin color paste and a production process thereof, belonging to the technical field of anticorrosive coatings, wherein the resin color paste comprises 260-330 parts of epoxy resin, 130-160 parts of alcohol ether solvent, 60-80 parts of isooctanol, 35-50 parts of diethanolamine and 100-200 parts of polyamine resin, and is prepared by dispersing the components in 10-20 parts of deionized water through chemical reaction and mixing. The production process comprises the steps of melting the epoxy resin, adding the raw materials and carrying out heat preservation reaction. The resin color paste has the advantages of less loss in the production process, reduction in production cost, good anti-shrinkage effect, improvement in product quality and strong hydrophilicity; the production process of the invention enables the ring opening of the epoxy resin to be moderate, avoids raw material waste, increases the water solubility of the epoxy resin, eliminates shrinkage cavity of the product and improves the product quality.
Description
Technical Field
The invention relates to the technical field of anticorrosive coatings, in particular to resin color paste and a production process thereof.
Background
The resin color paste is one of raw materials used for producing the coating, the resin color paste used for producing the water-based coating needs to have good water solubility, otherwise, the color paste floats in water after the coating is mixed with the water, and the coloring effect of the coating is poor; in addition, in the production process of the resin color paste, shrinkage cavities are easily generated, the product quality is reduced due to the generation of the shrinkage cavities, and a paint film is unsmooth when the later-period paint is used; moreover, in the process of producing the resin color paste, heating and heat preservation are needed to enable the reaction between the raw materials to be normally carried out, but in the process of heating and heat preservation, the solvent is easy to volatilize, so that the waste of the production raw materials and the environmental pollution are caused, and the loss and inconvenience are brought to production enterprises.
Disclosure of Invention
In view of the above-mentioned shortcomings in the prior art, the present invention provides a resin color paste and a production process thereof, so as to solve the above-mentioned problems.
The technical scheme adopted by the invention for solving the technical problem comprises the following steps: a resin color paste comprises 260-330 parts of epoxy resin, 130-160 parts of an alcohol ether solvent, 60-80 parts of isooctanol, 35-50 parts of diethanolamine and 100-200 parts of polyamine resin, and is prepared by dispersing the components in 10-20 parts of deionized water through chemical reaction and mixing.
The boiling point of isooctyl alcohol is as high as 185-189 ℃, and is much higher than that of other solvents. In the production process of the resin color paste, the reaction temperature is about 100 ℃ generally. Isooctanol is selected as a solvent, and the characteristic of high boiling point of the isooctanol is utilized, so that the isooctanol is not easy to volatilize in the production process, the loss is reduced, and the isooctanol is safe and environment-friendly; meanwhile, isooctanol also has the function of anticorrosion, and the anticorrosion effect of the coating is improved.
In order to further increase the water solubility of the epoxy resin, the further technical scheme is as follows: also comprises 1-3 parts of ethylenediamine by weight.
The further technical scheme is as follows: the adhesive also comprises 200-300 parts of a cross-linking agent by weight. In the production process, shrinkage cavities can be generated due to poor dispersion of the raw materials in water, the crosslinking agent can play a role in resisting shrinkage cavities, the shrinkage cavities are avoided, and the product quality is improved.
The further technical scheme is as follows: the alcohol ether solvent is propylene glycol methyl ether. Propylene glycol methyl ether can enhance film thickness. The thickness of a paint film without propylene glycol monomethyl ether is about 10 mu m generally, and the corrosion prevention effect is poor; after the propylene glycol methyl ether is added, the thickness of a paint film can reach 20-30 mu m, and the corrosion resistance is greatly improved. In addition, the propylene glycol methyl ether has low toxicity to human bodies and is safer.
The further technical scheme is as follows: the cross-linking agent is prepared from the following raw materials in parts by weight: 280-340 parts of polyisocyanate, 140-180 parts of ethylene glycol butyl ether, 200-250 parts of isooctyl alcohol, 1-4 parts of catalyst and 280-320 parts of propylene glycol methyl ether.
The further technical scheme is as follows: the polyisocyanate is TDI, and the catalyst is organic tin liquid. TDI is toluene diisocyanate and is a sealing agent, and is matched with diethanolamine, so that the problem that epoxy resin does not have water solubility due to non-ring opening of the epoxy resin can be solved, the problem that the epoxy resin has too strong water solubility due to too much ring opening of the epoxy resin and the solvent loss is too large can be solved, the ring opening of the epoxy resin is moderate, the product quality is ensured, the loss of raw materials is reduced, and the production cost is reduced.
The solution of the present invention for solving the technical problem further comprises: a production process of resin color paste comprises the following steps:
step 1: adding 60-80 parts of isooctanol and 130-160 parts of propylene glycol methyl ether into an epoxy kettle for melting epoxy resin, and then adding 260-330 parts of epoxy resin into the epoxy kettle;
step 2: heating the interior of the epoxy kettle until the epoxy resin is completely melted;
and step 3: putting the melted epoxy resin into a reaction kettle, heating and starting stirring, adding 35-50 parts of diethanolamine and 1-3 parts of ethylenediamine into the reaction kettle, and reacting until the epoxy resin is subjected to ring opening;
and 4, step 4: adding 100-200 parts of polyamine resin and 200-300 parts of a crosslinking agent into a reaction kettle, and sealing a kettle cover of the reaction kettle after the addition is finished;
and 5: heating to 110 +/-2 ℃, carrying out heat preservation reaction for more than 2 hours, then cooling to below 100 ℃, adding 10-20 parts of deionized water, and carrying out heat preservation reaction for 1-1.5 hours at the temperature to finish the preparation;
in the above step, the parts of the raw materials are all by weight.
The further technical scheme is as follows: and 3, heating to 80 ℃, adding the diethanol amine and the ethylene diamine, and reacting for more than 2 hours under the condition of heat preservation. The ring of the epoxy resin can be opened after the heat preservation for more than two hours, and if the heat preservation time is too short, the ring of the epoxy resin can not be opened, and the epoxy resin does not have water solubility.
The further technical scheme is as follows: and 4, after adding the polyamine resin, heating to 100 +/-2 ℃, and adding the crosslinking agent after preserving the heat for 2 hours.
The further technical scheme is as follows: and cooling water is introduced into a condenser of the reaction kettle in the production process, and after the epoxy resin is melted, a stirring device of the reaction kettle starts stirring and stirs until the preparation is finished.
In the step 5, after the temperature is raised to 110 +/-2 ℃, the heat preservation time is required to be more than 2 hours, and if the heat preservation time is insufficient, shrinkage cavities are easy to generate.
The invention has the beneficial effects that:
1. the boiling point of isooctyl alcohol is as high as 185-189 ℃, and the boiling point is much higher than that of other solvents. In the production process of the resin color paste, the reaction temperature is about 100 ℃ generally. Isooctanol is selected as a solvent, and the characteristic of high boiling point of the isooctanol is utilized, so that the isooctanol is not easy to volatilize in the production process, the loss is reduced, and the isooctanol is safe and environment-friendly; meanwhile, isooctanol also has the function of anticorrosion, and the anticorrosion effect of the coating is improved.
2. The water solubility of the epoxy resin can be increased by adding the diethanol amine, the product has better hydrophilicity, the phenomenon of layering can not occur after water is added, the coloring effect of the coating is better, and the product quality is finer and smoother.
3. The addition of the cross-linking agent has the effect of shrinkage cavity resistance, so that shrinkage cavities of the product are avoided, and the paint film is smoother.
4. TDI is added in the cross-linking agent as a blocking agent, so that the problem that the epoxy resin has too high water solubility due to too much ring opening and thus has too large solvent loss can be avoided, the epoxy resin has moderate ring opening, the product quality is ensured, meanwhile, the loss of raw materials is reduced, and the production cost is reduced.
5. The production process of the invention reasonably arranges the adding sequence, the reaction temperature and the reaction time of the raw materials, has high production efficiency, ensures the ring opening of the epoxy resin to be moderate, ensures the water solubility of the product to be moderate, avoids the shrinkage cavity of the product in the production process and improves the quality of the product.
6. In the production process, the exothermic reaction part is fed in a dropwise manner, so that the boiling phenomenon of the solvent is avoided, the normal reaction is ensured, and the waste of the solvent is avoided.
Detailed Description
The invention is further described with reference to specific examples below:
the first embodiment is as follows:
a resin color paste is prepared from the following raw materials:
the production process comprises the following steps:
step 1: adding isooctanol and propylene glycol methyl ether with the formula amount into an epoxy kettle for melting epoxy resin, then adding CYD epoxy resin with the formula amount, and introducing cooling water into the epoxy kettle and a condenser on a reaction kettle.
Step 2: and (4) keeping the temperature when the temperature is raised to 80 ℃, opening the kettle cover after the epoxy resin in the epoxy kettle is completely melted, and observing to confirm that the epoxy resin is completely melted.
And step 3: and (3) putting the melted epoxy resin into a reaction kettle, starting stirring when the temperature of the reaction kettle rises to 80 ℃, adding ethylenediamine and diethanolamine, and preserving the temperature for 2 hours.
And 4, step 4: and after the heat preservation is finished, adding polyamine resin, heating to 100 ℃, adding a crosslinking agent after the heat preservation is carried out for 2 hours, and sealing the kettle cover of the reaction kettle after the addition is finished.
And 5: heating to 110 ℃, reacting for 2 hours under heat preservation, then cooling to 80 ℃, adding deionized water with the formula amount, reacting for 1 hour under heat preservation at the temperature, discharging for later use, and informing central control personnel to take a sample for detection.
Example two:
a resin color paste is prepared from the following raw materials:
the production process comprises the following steps:
step 1: adding isooctanol and propylene glycol methyl ether with the formula amount into an epoxy kettle for melting epoxy resin, then adding CYD epoxy resin with the formula amount, and introducing cooling water into the epoxy kettle and a condenser on a reaction kettle.
Step 2: and (4) keeping the temperature when the temperature is raised to 85 ℃, opening the kettle cover after the epoxy resin in the epoxy kettle is completely melted, and observing to confirm that the epoxy resin is completely melted.
And step 3: and (3) putting the melted epoxy resin into a reaction kettle, starting stirring when the temperature of the reaction kettle rises to 85 ℃, adding ethylenediamine and diethanolamine, and preserving the temperature for 2.5 hours.
And 4, step 4: and after the heat preservation is finished, adding polyamine resin, heating to 102 ℃, adding a crosslinking agent after the heat preservation is carried out for 2.5 hours, and sealing the kettle cover of the reaction kettle after the addition is finished.
And 5: and raising the temperature to 112 ℃, carrying out heat preservation reaction for 2.5 hours, then reducing the temperature to 90 ℃, adding deionized water with the formula amount, carrying out heat preservation reaction for 1.5 hours at the temperature, discharging for later use, and informing central control personnel to carry out sampling detection.
Example three:
a resin color paste is prepared from the following raw materials:
the production process comprises the following steps:
step 1: adding isooctanol and propylene glycol methyl ether with the formula amount into an epoxy kettle for melting epoxy resin, then adding CYD epoxy resin with the formula amount, and introducing cooling water into the epoxy kettle and a condenser on a reaction kettle.
Step 2: and (4) keeping the temperature when the temperature rises to 82 ℃, opening the kettle cover after the epoxy resin in the reaction kettle is completely melted, and observing to confirm that the epoxy resin is completely melted.
And step 3: and (3) putting the melted epoxy resin into a reaction kettle, starting stirring when the temperature of the reaction kettle rises to 83 ℃, adding ethylenediamine and diethanolamine, and preserving the temperature for 2.2 hours.
And 4, step 4: and after the heat preservation is finished, adding polyamine resin, heating to 98 ℃, adding a crosslinking agent after the heat preservation is carried out for 2.2 hours, and sealing the kettle cover of the reaction kettle after the addition is finished.
And 5: heating to 108 ℃, reacting for 2.2 hours under heat preservation, then cooling to 85 ℃, adding deionized water with the formula amount, reacting for 1.2 hours under heat preservation at the temperature, discharging for later use, and informing central control personnel to take a sample for detection.
In the above embodiment, the cross-linking agent is prepared from the following raw materials in parts by weight:
the production process of the cross-linking agent comprises the following steps:
step 1: checking whether the reaction kettle is clean and whether each pipeline and valve are in place.
Step 2: the TDI with the formula amount is pumped in by vacuum, cooling water is introduced into a condenser on the reaction kettle, and the organic tin liquid with the formula amount is added by stirring.
And step 3: when the temperature of the materials rises to 60 ℃, starting to dropwise add the isooctyl alcohol pumped into the metering tank in advance, and dropwise adding the ethylene glycol butyl ether after the dropwise adding is finished. The reaction is exothermic reaction, the temperature change is noticed, the dropping speed is controlled, the temperature is controlled between 60 ℃ and 65 ℃, and the dropping speed of isooctyl alcohol and ethylene glycol butyl ether is about 350 kg/h.
And 4, step 4: after the dropwise addition, reacting at 70-75 ℃ for 2 hours in a heat preservation way, then heating to 88-92 ℃, reacting for 2 hours in a heat preservation way, cooling to 80 ℃ after the heat preservation is finished, adding propylene glycol methyl ether, uniformly stirring, discharging to a clean and dry closed container, and informing a central control staff to measure the solid content for later use.
The above description is only exemplary of the present invention, and not intended to limit the present invention, and any modifications, equivalents, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Other technical features than those described in the specification are known to those skilled in the art, and are not described in detail herein in order to highlight the novel features of the present invention.
Claims (5)
1. A resin color paste is characterized by comprising 260-330 parts of epoxy resin, 130-160 parts of an alcohol ether solvent, 60-80 parts of isooctanol, 35-50 parts of diethanolamine and 100-200 parts of polyamine resin, which are subjected to chemical reaction and mixing and dispersed in 10-20 parts of deionized water, wherein the parts are calculated by weight;
the adhesive also comprises 1-3 parts of ethylenediamine and 200-300 parts of a cross-linking agent by weight;
the alcohol ether solvent is propylene glycol methyl ether;
the cross-linking agent is prepared from the following raw materials in parts by weight: 280-340 parts of polyisocyanate, 140-180 parts of ethylene glycol butyl ether, 200-250 parts of isooctyl alcohol, 1-4 parts of catalyst and 280-320 parts of propylene glycol methyl ether;
the polyisocyanate is TDI, and the catalyst is organic tin liquid.
2. The production process of the resin color paste according to claim 1, which is characterized by comprising the following steps:
step 1: adding 60-80 parts of isooctanol and 130-160 parts of propylene glycol methyl ether into an epoxy kettle for melting epoxy resin, and then adding 260-330 parts of epoxy resin into the epoxy kettle;
step 2: heating the interior of the epoxy kettle until the epoxy resin is completely melted;
and step 3: putting the melted epoxy resin into a reaction kettle, heating and starting stirring, adding 35-50 parts of diethanolamine and 1-3 parts of ethylenediamine into the reaction kettle, and reacting until the epoxy resin is subjected to ring opening;
and 4, step 4: adding 100-200 parts of polyamine resin and 200-300 parts of a crosslinking agent into a reaction kettle, and sealing a kettle cover of the reaction kettle after the addition is finished;
and 5: heating to 110 +/-2 ℃, carrying out heat preservation reaction for more than 2 hours, then cooling to below 100 ℃, adding 10-20 parts of deionized water, and carrying out heat preservation reaction for 1-1.5 hours at the temperature to finish the preparation;
in the above step, the parts of the raw materials are all by weight.
3. The production process according to claim 2, wherein in step 3, the diethanolamine and the ethylenediamine are added when the temperature is raised to 80 ℃, and the reaction is carried out for more than 2 hours under the condition of heat preservation.
4. The process according to claim 2, wherein in step 4, the polyamine resin is added, heated to 100 ℃ ± 2 ℃, and the crosslinking agent is added after the temperature is maintained for 2 hours.
5. The production process as claimed in claim 2, wherein cooling water is introduced into a condenser of the reaction kettle during the production process, and after the epoxy resin is melted, a stirring device of the reaction kettle is started to stir until the preparation is finished.
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| CN201610344718.1A CN106009934B (en) | 2016-05-23 | 2016-05-23 | Resin color paste and production process thereof |
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| CN201610344718.1A CN106009934B (en) | 2016-05-23 | 2016-05-23 | Resin color paste and production process thereof |
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| CN108373661A (en) * | 2017-06-08 | 2018-08-07 | 江西乔威化工有限公司 | A kind of production technology of water paint mill base |
| CN115558382A (en) * | 2022-10-19 | 2023-01-03 | 山东优固德环保科技有限公司 | Simple and rapid construction floor paint and preparation method thereof |
| CN115717029B (en) * | 2022-12-08 | 2023-07-25 | 上海正欧实业有限公司 | Low-temperature curing epoxy floor paint and preparation method thereof |
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| CN1047398C (en) * | 1994-11-02 | 1999-12-15 | 化学工业部常州涂料化工研究院 | Resin used for cathode electrodeposition paint and its production and application |
| CN1074027C (en) * | 1998-04-09 | 2001-10-31 | 化工部常州涂料化工研究院 | Preparation of resin emulsion for electrophoretic paint used on thick-film cathode |
| CN103146295B (en) * | 2013-03-01 | 2015-06-03 | 广东科德化工实业有限公司 | Matte cathode electrophoresis coating as well as preparation method and use method for same |
| CN103965740A (en) * | 2014-05-20 | 2014-08-06 | 广东科德化工实业有限公司 | Sand finish type cathode electrophoretic coating and preparation method thereof |
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