CN102504178A - Preparation method of novel mono-component water-based polyurethane coating agent - Google Patents
Preparation method of novel mono-component water-based polyurethane coating agent Download PDFInfo
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- CN102504178A CN102504178A CN2011103380719A CN201110338071A CN102504178A CN 102504178 A CN102504178 A CN 102504178A CN 2011103380719 A CN2011103380719 A CN 2011103380719A CN 201110338071 A CN201110338071 A CN 201110338071A CN 102504178 A CN102504178 A CN 102504178A
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Abstract
The invention discloses a preparation method of a novel mono-component water-based polyurethane coating agent, which includes the following steps of adding methyl isobutyronitrile ketone, IPDI (isophorone diisocyanate) and dibutyltin dilaurate in catalytic dosage into a dry and clean reactor full of nitrogen gas sequentially and heating and dissolving the same to obtain a liquor A; mixing and dissolving metered PEG (polyethylene glycol)-1000, N-methyldiethanolamine and methyl isobutyronitrile ketone and adding the same into the liquor A slowly to react together for 1 to 5 hours at the temperature ranging from 80 DEG C to 105 DEG C so as to obtain prepolymer; then adding methyl ethyl ketoxime to react for 1 to 5 hours in a heat insulation manner, and obtaining end-closed polyurethane emulsion; adding polydimethylsiloxane for modification and reaction for 1 to 2 hours in a heat insulation manner; and finally adding phosphoric acid in proper volume to be used as neutralizer, depressurizing to release solvent before adding deionized water, mixing uniformly and packaging to obtain the novel mono-component water-based polyurethane coating agent. The novel mono-component water-based polyurethane coating agent prepared by the preparation method is safe and non-toxic and capable of improving light and weather resistance of coating films greatly, has excellent yellowing resistance and can be used for high-end clothes fabrics.
Description
Technical field:
The present invention relates to a kind of novel mono-component aqueous polyurethane coating agent, the preparation method of the high aqueous polyurethane coating agent of particularly novel single component.
Background technology:
Urethane resin has adjustable, wear-resisting, the anti-solvent of soft durometer, low temperature resistant reaching with most of materials has than characteristics such as strong cementabilities, and development in recent years is rapid.Aqueous polyurethane is meant with water to be the polyurethane dispersions system of dispersion medium, and main raw material is to contain urethano (NH one CO one) on the POLYMETHYLENE POLYPHENYLISOCYANATE macromolecular chain that reaction generates with polyol and urinate basic (NH one CO one NH one) structural unit.Employed raw material directly affects the final performance of product in synthetic, has HS, rub resistance, and is nontoxic grade for excellent properties is being used widely aspect light textile, leather, coating, tackiness agent, the printing etc. a lot.Polyisocynate monomer commonly used mainly contains 2,4-dimethyl-vulcabond (TDI), 4,4 '-'-diphenylmethane diisocyanate (MDI), isophorone diisocyanate (IPDI), hexamethylene diisocyanate (HDI) etc.; Because TDI, MDI contain the rigidity aromatic ring, make that the force of cohesion of urethane is bigger, have stronger tensile strength; Characteristics such as the existence of aromatic ring can make glued membrane turn to be yellow easily, and toxicity is big, and HDI does not contain ring texture; Intensity is less, but its texture ratio is more regular, makes the polyurethane adhesive membrane crystallization; It is bigger that IPDI has intensity, and good weatherability is difficult for yellowing; Excellent properties such as safety non-toxic, but later to the research and development application of IPDI, report less.These factors are seriously restricting the development of corresponding polyurethanes auxiliary agent to the high-end field.
Summary of the invention:
Goal of the invention: to the defective that prior art exists, the invention provides a kind of preparation method of novel mono-component aqueous polyurethane coating agent, technology is simple, is fit to suitability for industrialized production.
Technical scheme: for realizing the foregoing invention purpose; The present invention adopts following technical scheme: a kind of preparation method of novel mono-component aqueous polyurethane coating agent; May further comprise the steps: in the reaction kettle of the dry cleansing that is full of nitrogen, add organic solvent methyl isopropyl cyanide ketone, IPDI, the dibutyl tin laurate of catalytic amount; Heating for dissolving obtains A liquid, and is for use; With polyoxyethylene glycol PEG-1000 and the hydrophilic reagent N methyldiethanol amine of metering and methyl isopropyl cyanide ketone miscible after, and slowly join in the said A liquid, and react 1 ~ 5h down at 80 ~ 105 ℃ and obtain prepolymer product; Add the end-capping reagent methyl ethyl ketoxime then, insulation reaction 1 ~ 5h obtains end capped polyaminoester emulsion; Add the hydroxy silicon oil YSR 3286 and carry out modification, insulation reaction 1 ~ 2h; At last, in reaction solution, add an amount of phosphoric acid, after solvent is deviate from decompression, add deionized water as neutralizing agent, stirring and evenly mixing, encapsulate product.
The mass ratio of said IPDI and PEG-1000 is 1 ~ 5.0:1.
Beneficial effect: compared with prior art, the present invention has the following advantages: the present invention makes aqueous polyurethane coating agent safety non-toxic, can improve greatly film fast light; Weathering resistance has good anti-yellowing property, can be used as high-end garment material; Leather and automobile, coating-forming agents such as aircraft.
Embodiment:
Below in conjunction with embodiment the present invention is done detailed description further, but the scope that the present invention requires to protect is not limited to the scope that embodiment representes.
Embodiment 1:
Be full of the drying of nitrogen, adding organic solvent methyl isopropyl cyanide ketone (125.0kg) and IPDI (320.0kg) in the reaction kettle of cleaning successively, catalyzer dibutyl tin laurate (1.05kg) is heated to 60 ℃ of dissolvings under stirring, and is for use;
Take by weighing PEG-1000 (285.0kg), N methyldiethanol amine (18.5kg) methyl isopropyl cyanide ketone (90.0kg) mixed solution slowly is added dropwise in the above-mentioned reaction soln, and controlled temperature is at 90 ~ 105 ℃; Reaction 1 ~ 5h, reaction is finished, and is cooled to about 80 ℃, in reaction product, adds end-capping reagent methyl ethyl ketoxime (122.0kg); Insulation reaction 1 ~ 5h obtains end capped polyaminoester emulsion, in reaction solution, adds hydroxy silicon oil YSR 3286 (100.0kg), insulation reaction 1 ~ 2h; Add neutralizing agent phosphoric acid (3.0kg), make PH=7.8, after solvent is deviate from decompression, add deionized water; Making solid content is about 30 ~ 35%, stirring and evenly mixing, encapsulate product.
Claims (2)
1. the preparation method of a novel mono-component aqueous polyurethane coating agent; May further comprise the steps: the dibutyl tin laurate that in the reaction kettle of the dry cleansing that is full of nitrogen, adds organic solvent methyl isopropyl cyanide ketone, IPDI, catalytic amount; Heating for dissolving obtains A liquid, and is for use; With polyoxyethylene glycol PEG-1000 and the hydrophilic reagent N methyldiethanol amine of metering and methyl isopropyl cyanide ketone miscible after, and slowly join in the said A liquid, and react 1 ~ 5h down at 80 ~ 105 ℃ and obtain prepolymer product; Add the end-capping reagent methyl ethyl ketoxime then, insulation reaction 1 ~ 5h obtains end capped polyaminoester emulsion; Add the hydroxy silicon oil YSR 3286 and carry out modification, insulation reaction 1 ~ 2h; At last, in reaction solution, add an amount of phosphoric acid, after solvent is deviate from decompression, add deionized water as neutralizing agent, stirring and evenly mixing, encapsulate product.
2. according to the preparation method of the said novel mono-component aqueous polyurethane coating agent of claim 1, it is characterized in that: the mass ratio of said IPDI and PEG-1000 is 1 ~ 5.0:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103380719A CN102504178A (en) | 2011-11-01 | 2011-11-01 | Preparation method of novel mono-component water-based polyurethane coating agent |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103380719A CN102504178A (en) | 2011-11-01 | 2011-11-01 | Preparation method of novel mono-component water-based polyurethane coating agent |
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| CN102504178A true CN102504178A (en) | 2012-06-20 |
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| CN2011103380719A Pending CN102504178A (en) | 2011-11-01 | 2011-11-01 | Preparation method of novel mono-component water-based polyurethane coating agent |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030774A (en) * | 2012-12-07 | 2013-04-10 | 青岛文创科技有限公司 | Preparation method of organic silicon modified cationic waterborne polyurethane |
| CN103173179A (en) * | 2013-03-07 | 2013-06-26 | 常州大学 | Preparation method of aqueous polyurethane adhesive for laminated composite fabrics |
| CN108252109A (en) * | 2018-03-02 | 2018-07-06 | 浙江华祥皮革有限公司 | A kind of preparation method of automobile cushion leather |
| CN111320743A (en) * | 2020-03-26 | 2020-06-23 | 中国科学院长春应用化学研究所 | High-solid-content carbon dioxide-based cationic waterborne polyurethane and preparation method thereof |
| CN111978851A (en) * | 2020-08-31 | 2020-11-24 | 荆晓东 | High-temperature-resistant and water-resistant waterborne polyurethane coating and preparation method thereof |
-
2011
- 2011-11-01 CN CN2011103380719A patent/CN102504178A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030774A (en) * | 2012-12-07 | 2013-04-10 | 青岛文创科技有限公司 | Preparation method of organic silicon modified cationic waterborne polyurethane |
| CN103173179A (en) * | 2013-03-07 | 2013-06-26 | 常州大学 | Preparation method of aqueous polyurethane adhesive for laminated composite fabrics |
| CN103173179B (en) * | 2013-03-07 | 2014-08-13 | 常州大学 | Preparation method of aqueous polyurethane adhesive for laminated composite fabrics |
| CN108252109A (en) * | 2018-03-02 | 2018-07-06 | 浙江华祥皮革有限公司 | A kind of preparation method of automobile cushion leather |
| CN111320743A (en) * | 2020-03-26 | 2020-06-23 | 中国科学院长春应用化学研究所 | High-solid-content carbon dioxide-based cationic waterborne polyurethane and preparation method thereof |
| CN111320743B (en) * | 2020-03-26 | 2021-04-27 | 中国科学院长春应用化学研究所 | High-solid-content carbon dioxide-based cationic waterborne polyurethane and preparation method thereof |
| CN111978851A (en) * | 2020-08-31 | 2020-11-24 | 荆晓东 | High-temperature-resistant and water-resistant waterborne polyurethane coating and preparation method thereof |
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Application publication date: 20120620 |