Dendritic waterborne polyurethane-based high-molecular 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: 2019-06-14
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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  • Dendritic waterborne polyurethane-based high-molecular dye and preparation method thereof
  • Dendritic waterborne polyurethane-based high-molecular 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 the protection of nitrogen, add 3.0g H2OP, 17.3g p-phenylene diisocyanate (TDI) and 0.03g dibutyltin dilaurate to the reactor successively, react at 90°C for 3 hours, then add 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 purple li...

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 reactor, react 3 hours under 90 ℃, 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 purple l...

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 a dendritic waterborne polyurethane-based high-molecular dye, a polymer polyol and a dendritic polyester polyol are subjected to dehydration treatment for 2-3 hours under the conditions that the temperature is 100-110 DEG C and the vacuum degree is less than or equal to 0.1 mpa; under the protection of nitrogen, the dendritic polyester polyol, polyisocyanate and a catalyst are sequentially added into a reaction container for reacting for 3-8 hours at the temperature of 90-95 DEG C; the polymer polyol and a solvent are added for reacting at 80-90DEG C for 2-3 hours; a hydrophilic chain extender and a catalyst are added for reacting at 70-80 DEG C for 2-3 hours; a small molecular dye and a solvent are added for reacting for 2-3 hours at the temperature of 60-80 DEG C; after cooling to 30-50 DEG C, a neutralizer is added reacting for 30-60 minutes; a salt forming agent is added, and dispersing is performed for 20-30 minutes at a high speed;and in a rotary evaporator, rotary stirring is performed to remove the solvent at the temperature of 75-80 DEG C to obtain the dendritic waterborne polyurethane-based high-molecular dye the dye; andthe dendritic waterborne polyurethane-based high-molecular dye the dye has the characteristics of high temperature resistance, chemical resistance and corrosion resistance.

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 Applications(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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