A kind of dendritic water-based polyurethane-based polymer dye and preparation method thereof

A water-based polyurethane and dendritic polyester technology, applied in the field of polymer dyes, can solve the problems of water resistance, heat resistance, chemical resistance, poor corrosion resistance, etc., and achieve high cross-linking degree, easy film formation, and processability Good results

Active Publication Date: 2021-08-27
浙江材华科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: traditional polyurethane-based polymer dyes have poor water resistance, heat resistance, chemical resistance and corrosion resistance, and a dendritic water-based polyurethane-based polymer dye and its preparation method are provided.

Method used

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  • A kind of dendritic water-based polyurethane-based polymer dye and preparation method thereof
  • A kind of dendritic water-based polyurethane-based polymer dye and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Under nitrogen protection, polytetrahydrofuran diol and H3OP were vacuum dehydrated at 100 ° C for 2 hours;

[0043] Under nitrogen protection, 3.0g H2OP, 17.3g p-phenylene diisocyanate (TDI) and 0.03g dibutyltin dilaurate were successively added to the reactor, reacted at 90°C for 3 hours, then added 40.0g polytetrahydrofuran diol and 15ml butanone , reacting at 90°C for 3 hours to obtain a dendritic polyurethane prepolymer;

[0044] Add 7.8g of dimethylolpropionic acid, cool down to 80°C and react for 2 hours;

[0045] Cool down to 75°C, add 2.2g of Disperse Violet 26[C 26 h 18 N 2 o 4 , CAS:12217-95-7] ​​and 10ml methyl ethyl ketone reaction 2 hours;

[0046]Cool down to 50°C, add 5.9g of triethylamine to react for 30 minutes, then transfer the solution to a high-speed mixing tank, add 150ml of distilled water, and stir for 30 minutes at high speed;

[0047] Finally, in a rotary evaporator, rotate and stir at 75° C. to remove the solvent, and the obtained purpl...

Embodiment 2

[0050] Under the protection of nitrogen, the polyoxypropylene glycol and H3OP were vacuum dehydrated at 105 ° C for 2.5 hours;

[0051] Under nitrogen protection, add 3.0gH3OP, 24.0g isophorone diisocyanate (IPDI) and 0.03g dibutyltin dilaurate successively in the reactor, react at 90 ℃ for 3 hours, then add 40.0g polyoxypropylene diol and 15ml of N-methylpyrrolidone was reacted at 80°C for 3 hours to obtain a dendritic polyurethane prepolymer;

[0052] Then add 6.0g dimethylolpropionic acid, cool down to 75°C and react for 2 hours;

[0053] Then add 2.3g disperse violet 4[C 15 h 12 N 2 o 2 , CAS:1220-94-6] and 10ml N-methylpyrrolidone were reacted for 2 hours;

[0054] Cool down to 50°C, add 3.0g of triethylamine to react for 30 minutes, then transfer the solution to a high-speed mixing tank, add 150ml of distilled water, and stir for 30 minutes at high speed;

[0055] Finally, in a rotary evaporator, rotate and stir at 75° C. to remove the solvent, and the obtained pur...

Embodiment 3

[0059] Under nitrogen protection, polycaprolactone diol and H3OP were vacuum dehydrated at 110°C for 3 hours;

[0060] Under nitrogen protection, 3.0g H3OP, 27.0g 4,4-diphenylmethane diisocyanate (MDI) and 0.01g stannous octoate were successively added to the reactor, reacted at 90°C for 3 hours, and then added 40.0g polycaprolactone Diol and 15ml N-methylpyrrolidone were reacted for 2 hours at 80° C. to obtain a dendritic polyurethane prepolymer;

[0061] Then add 6.5g dimethylol propionic acid, cool down to 75°C and react for 2 hours;

[0062] Heat up to 90°C, add 2.2g of Disperse Violet 63[C 19 h 19 CIN 6 o 3 , CAS:64294-88-8] and 10ml dioxane reaction for 2 hours;

[0063] Cool down to 40°C, add 3.0g of triethylamine to react for 30 minutes, then transfer the solution to a high-speed mixing tank, add 150ml of distilled water, and stir for 30 minutes at high speed;

[0064] Finally, in a rotary evaporator, rotate and stir at 80° C. to remove the solvent, and the obtai...

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Abstract

The invention discloses a preparation method of dendritic water-based polyurethane-based polymer dye, which comprises dehydration treatment of polymer polyol and dendritic polyester polyol at 100-110°C and vacuum degree ≤0.1MPa under nitrogen protection. 2 to 3 hours; under the protection of nitrogen, add dendritic polyester polyol, polyisocyanate and catalyst to the reaction vessel in sequence, and react at 90 to 95°C for 3 to 8 hours; then add polymer polyol and solvent, 80 to 90 React at ℃ for 2-3 hours; add hydrophilic chain extender and catalyst, react at 70-80℃ for 2-3 hours; add small molecule dyes and solvents, react at 60-80℃ for 2-3 hours; cool down to 30 ~50°C, then add neutralizing agent, react for 30-60 minutes; add salt-forming agent and disperse at high speed for 20-30 minutes; in rotary evaporator, rotate and stir at 75-80°C to obtain dendritic water-based polyurethane base Molecular dyes that are high temperature, chemical and corrosion resistant.

Description

technical field [0001] The invention belongs to the field of polymer dyes, in particular to a dendritic water-based polyurethane-based polymer dye and a preparation method thereof. Background technique [0002] Polyurethane is a material with excellent performance, which has good wear resistance, oil resistance and solvent resistance, and is widely used in various fields. Among them, in the field of textile printing and dyeing, the most widely used polyurethane material is polyurethane-based polymer dyes. [0003] The traditional two-component water-based polyurethane-based polymer dyes have a low degree of crosslinking due to the low functionality of the polyol component and the lack of a branched chain structure, which makes the final product low in water resistance, heat resistance, chemical resistance and corrosion resistance. Both are lower than solvent-based polyurethane-based polymer dyes, which greatly limits the application of water-based polyurethane-based polymer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/83C08G18/66C08G18/48C08G18/42C08G18/34
Inventor 胡先海李根刘翔程从亮李明君胡鹏威
Owner 浙江材华科技有限公司
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