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Water-soluble color chain extender, copolymerization type colored polyurethane emulsion and colored polyurethane-acrylic ester copolymer emulsion, and preparation methods thereof

A technology of polyurethane emulsion and polyurethane prepolymer, which is applied in the fields of water-soluble color chain extender, copolymerized color polyurethane emulsion and color polyurethane-acrylate copolymer emulsion and its preparation, and can solve the synthesis steps and purification process of color chain extender Complicated, the reaction is difficult to be called green, economical, and limited color types, etc., to achieve the effect of a wide variety of colors, low cost, and complete color spectrum

Active Publication Date: 2017-03-15
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the above methods all use colored chain extenders to introduce chromogenic groups into polyurethane emulsions, the main problem of these methods is that the synthesis steps and purification process of colored chain extenders are very cumbersome, the production cost is high, and a large number of them are used. Organic solvents cause pollution, and there are many reaction by-products that make the reaction difficult to be called green and economical
And the kinds of colors prepared by these methods are limited, and only a few colors such as red, yellow and blue are available, which greatly limits its application in industrial actual production.
[0007] Therefore, the existing technology of preparing water-soluble colored chain extender, copolymerized colored polyurethane emulsion and copolymerized colored polyurethane-acrylate copolymer emulsion needs to be further improved

Method used

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  • Water-soluble color chain extender, copolymerization type colored polyurethane emulsion and colored polyurethane-acrylic ester copolymer emulsion, and preparation methods thereof
  • Water-soluble color chain extender, copolymerization type colored polyurethane emulsion and colored polyurethane-acrylic ester copolymer emulsion, and preparation methods thereof
  • Water-soluble color chain extender, copolymerization type colored polyurethane emulsion and colored polyurethane-acrylic ester copolymer emulsion, and preparation methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] Embodiment 1—Water-soluble red chain extender (I)

[0112] 5.62 grams of reactive red 22 (562 grams / mole), 3 grams of ethylenediamine and 40 grams of water were added to a 100 milliliter three-necked flask, stirred and mixed evenly, then heated up to 30°C, reacted for 5 hours and evaporated under reduced pressure at 50°C Remove water, wash with 100 milliliters of absolute ethanol, filter after standing, wash the filter cake three times with absolute ethanol, and vacuum-dry the filter cake to obtain the water-soluble red chain extender (I).

[0113] The above equation for preparing the water-soluble red chain extender is as follows:

[0114]

Embodiment 2

[0115] Embodiment 2—copolymerization type red polyurethane emulsion

[0116] (1) Add 50 grams of polyether polyol N210 and 33 grams of isophorone diisocyanate into a three-necked flask, stir and heat to set 80°C and react for 3 hours;

[0117] (2) Add 0.05 grams of dibutyltin dilaurate, 5.4 grams of dimethylol propionic acid, and 4.8 grams of butanediol into a three-necked flask for chain extension reaction, and continue the reaction at 80°C for 4 hours;

[0118] (3) Cool the above prepolymer to 40°C, add 4 grams of triethylamine and react for 30 minutes, while adding 8 milliliters of acetone to stir and reduce viscosity;

[0119] (4) Dissolve 1.5 grams of water-soluble red chain extender (I) in 180 ml of water, then add it to the polyurethane prepolymer that has been cooled to 25°C, stir vigorously to disperse and extend the chain, and remove it by distillation under reduced pressure Acetone, obtain copolymerization type red polyurethane emulsion, gained copolymerization typ...

Embodiment 3

[0120] Embodiment 3—copolymerization type red polyurethane-acrylate copolymer emulsion

[0121] (1) Add 30 grams of polycarbonate diol (molecular weight: 2000) and 12 grams of 1,6-hexamethylene diisocyanate into a three-necked flask, stir and heat to 80°C and react for 2 hours, then add 0.1 grams of dilaurel Dibutyltin dibutyltin, 2.22 grams of dimethylol butyric acid, 0.9 grams of 1,6-hexanediol, reacted at 80 ° C for 4 hours;

[0122] (2) Cool the prepolymer to 70°C, then add 1.42 g of N,N-bis(2-hydroxyethyl)acrylamide, and continue the reaction for 2 hours;

[0123] (3) Cool the prepolymer to 30°C, add a mixture of 3 g of styrene and 1 g of butyl acrylate, stir to reduce viscosity, then add 1.52 g of triethylamine to form a salt for neutralization, and react for 20 minutes;

[0124] (4) Dissolve 0.2 g of water-soluble red chain extender (I) in 88 ml of water, then add it to the prepolymer that has been cooled to 25°C, and stir for 40 minutes to obtain water-based polyureth...

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Abstract

The invention discloses a water-soluble color chain extender, copolymerization type colored polyurethane emulsion and colored polyurethane-acrylic ester copolymer emulsion, and preparation methods thereof, wherein at least one chromophoric group and at least two amino groups are contained in the water-soluble color chain extender. The water-soluble color chain extender can have various colors including red, yellow, blue, green, purple, brown, black and the like; in addition, the production process is simple; the production cost is low; the production efficiency is high; the green and environment-friendly effects are achieved; meanwhile, when the water-soluble color chain extender is used as a chain extender, the copolymerization type colored polyurethane emulsion and the copolymerization type colored polyurethane-acrylic ester copolymer emulsion with rich colors can be obtained through preparation; the water-soluble color chain extender can be widely used for industrial production.

Description

technical field [0001] The invention belongs to the technical field of materials and fine chemicals. Specifically, the invention relates to a water-soluble color chain extender, a copolymerized color polyurethane emulsion and a color polyurethane-acrylate copolymer emulsion and a preparation method thereof. More specifically, the application relates to a water-soluble chain extender. A non-toxic color chain extender and a preparation method thereof, a copolymerized color polyurethane emulsion and a preparation method thereof, a copolymerized color polyurethane-acrylate copolymer emulsion and a preparation method thereof. Background technique [0002] With the gradual enhancement of people's awareness of environmental protection, the application of traditional solvent-based polymer products has been more and more restricted, because water-based polymer products not only save a lot of organic solvents, greatly reduce the harm to the environment, but also significantly reduce th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/32C08G18/12C08G18/66C08G18/08C08F283/00C08F220/14C08F212/08C08F220/18
CPCC08F283/008C08G18/0823C08G18/12C08G18/3857C08G18/3872C08G18/6659C08G18/6692C08F220/1804
Inventor 李勃天金青君孙剑武阚成友
Owner TSINGHUA UNIV
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