Color chain extender, co-polymerized color polyurethane emulsion, color polyurethane-acrylate copolymer emulsion, and preparation method thereof

A technology of polyurethane emulsion and polyurethane prepolymer, applied in the field of color chain extenders, can solve problems such as affecting the mechanical properties of polyurethane

Active Publication Date: 2016-06-15
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, connecting the chromophoric group to the main chain of polyurethane in a block manner will affect the mechanical properties of the original polyurethane

Method used

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  • Color chain extender, co-polymerized color polyurethane emulsion, color polyurethane-acrylate copolymer emulsion, and preparation method thereof
  • Color chain extender, co-polymerized color polyurethane emulsion, color polyurethane-acrylate copolymer emulsion, and preparation method thereof
  • Color chain extender, co-polymerized color polyurethane emulsion, color polyurethane-acrylate copolymer emulsion, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] Specifically, the preparation method of the colored chain extender comprises the following steps:

[0019] S11, dissolving the dye raw material and the hydroxyl functional reagent in a solvent;

[0020] S12, react at 20°C-130°C for 1 hour-8 hours to obtain the colored chain extender.

[0021] In step S11, the molar ratio of the hydroxyl functional reagent to the dye raw material is 1 / 1 to 6 / 1, preferably, the molar ratio of the hydroxyl functional reagent to the dye raw material is 2 / 1 to 3 / 1. The mass ratio of the solvent to the dye raw material is 5 / 1 to 50 / 1, preferably, the mass ratio of the solvent to the dye raw material is 15 / 1 to 25 / 1.

[0022] The dye raw materials are anthraquinone dyes, such as 1-nitroanthraquinone, 1-methylamino-4-bromoanthraquinone, 1-(4-acyl chloride) benzamidoanthraquinone, etc.; azo dyes, Such as 7-benzamido-3-phenylazo-4-(6-chloro)hexyloxy-2-naphthalenesulfonate sodium, 4-methyl-2-(4-benzamido)phenyl Azo-1-(6-chloro)hexyloxybenzene, ...

specific Embodiment

[0057] The present invention will be further described below in conjunction with specific examples, but the specific examples do not limit the present invention in any way.

[0058] The experimental methods described in the following examples are conventional methods unless otherwise specified.

[0059] The raw materials described in the following examples, wherein 1-(4-acyl chloride) benzamidoanthraquinone, 7-benzamido-3-phenylazo-4-(6-chloro)hexyloxy- 2-sodium naphthalenesulfonate, 4-methyl-2-(4-benzamido)phenylazo-1-(6-chloro)hexyloxybenzene, 5-(3-methoxy)propylamino -8-(2-methyl-4-nitro)phenylazo-1-(6-chloro)hexyloxybenzene was synthesized according to the method in Chinese patent (application number: 201310073995.X), and others were obtained from commercial way to get.

[0060] In all following examples: the solid content of the emulsion is measured by gravimetric method; the latex particle size and potential are measured at 25°C on the Zetasize3000HS laser particle siz...

Embodiment 1

[0062] Embodiment 1—copolymerization type red polyurethane emulsion

[0063] (1) Synthesis of the red chain extender (A): 3.80 grams of 1-nitroanthraquinone, 5.47 grams of 2-amino-1,3-propanediol and 1.59 grams of sodium carbonate were added to a 150 ml single-necked flask, and then 75 milliliter of ethylene glycol dimethyl ether, stirred and heated to 85 ° C for 2.5 hours. After cooling to room temperature, 300 ml of water was added, allowed to stand, filtered, and the filter cake was washed three times with distilled water, then vacuum-dried to obtain a red chain extender (A).

[0064] (2) Preparation of copolymerized red polyurethane emulsion: Add 15 grams of polyether polyol N210, 13 grams of isophorone diisocyanate and 2 drops of dibutyltin dilaurate into a three-necked flask, stir and heat to 80°C and react 2 Hours; then add 1.61 grams of dimethylolpropionic acid, 1.73 grams of 1,6-hexanediol and 0.09 grams of red chain extender (A) for chain extension reaction, react f...

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Abstract

The invention relates to a color chain extender, a co-polymerized color polyurethane emulsion, a color polyurethane-acrylate copolymer emulsion, and a preparation method thereof. The method includes the steps of: 1) preparing the color chain extenders having the three base colors: red, yellow blue, through polymerizable modification of dye molecules; 2) performing a chain extension reaction of polyurethane with the color chain extenders as a component in a chain extender, and performing a subsequent phase-reversal emulsification process to prepare the co-polymerized color polyurethane emulsion; and 3) performing grafted emulsion copolymerization to a copolymerization-type color polyurethane prepolymer and a vinyl monomer to prepare the co-polymerized color polyurethane-acrylate copolymer emulsion. Because a chromophoric group is bonded to the molecular chain of the polymer as a side group, so that the copolymer emulsion can be directly used for producing a color aqueous polymer product without addition of a dye or a pigment. The copolymer emulsion can be widely used in the fields of aqueous coatings, paints and ink as an aqueous film-forming resin.

Description

technical field [0001] The invention relates to a colored chain extender, a copolymerized colored polyurethane emulsion, a copolymerized colored polyurethane-acrylate copolymer emulsion and a preparation method thereof. Background technique [0002] With the increasingly stringent requirements for environmental protection and the gradual enhancement of people's awareness of environmental protection, the application of traditional solvent-based polymer products has been more and more restricted, and environmentally friendly products have become an inevitable trend of development. Water-based polymer products are developing very rapidly due to the use of non-toxic, non-flammable and cheap water as the medium. [0003] Polyurethane emulsion is a very important water-based polymer product. It has the advantages of good flexibility, wear resistance, low temperature resistance, and corrosion resistance. Treatment agents and other fields have been widely used. Polyurethane-acryla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/75C08G18/66C08G18/48C08G18/32C08G18/34C08G18/76C08G18/42C08G18/67C08G18/44C08G18/73C08F283/00C08F220/14C08F212/08C08F220/18
Inventor 金青君李勃天王吉帅黄馨仪阚成友
Owner TSINGHUA UNIV
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