Water-borne hyperbranched structure modified polyurethane polymer and preparation method thereof, and self-repair diffuse reflection coating composition

A technology of polyurethane polymer and terminal hydroxyl hyperbranching, which is applied in polyurea/polyurethane coatings, reflection/signal coatings, coatings, etc. It can solve the problems of poor transparency, inability to form a space network structure, and insufficient hardness of coatings. Adjustable, reduced coating process difficulty, and no pollution to the process

Active Publication Date: 2018-11-06
HARBIN INST OF TECH WUXI RES INST OF NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese invention patent application 2014105797477 discloses a synthetic method of polyurethane coating for anti-glare. The inventive method is simple, low in cost, and the synthetic polyurethane coating has good stability and excellent anti-glare performance, but the coating has poor transparency
Chinese invention patent application 201710037727.0 discloses a self-repairing anti-glare water-based polyurethane coating, which has good transparency, but since the coating is completely linear polyurethane prepared from diol and diisocyanate, it cannot form a dense spatial network structure, and the coating Good flexibility, but not enough hardness
[0005] Therefore, how to prepare a self-healing water-based coating with diffuse reflection properties, good transparency, hardness and flexibility has become a great challenge.

Method used

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  • Water-borne hyperbranched structure modified polyurethane polymer and preparation method thereof, and self-repair diffuse reflection coating composition
  • Water-borne hyperbranched structure modified polyurethane polymer and preparation method thereof, and self-repair diffuse reflection coating composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Take by weighing 200g (0.1mol) molecular weight is the aliphatic polyether diol of 2000g / mol, 200g (0.1mol) molecular weight is the aliphatic polyester diol of 2000g / mol, 100 ℃ of decompression dehydration, cooling to 60°C, blowing nitrogen, adding 0.1g catalyst dibutyltin dilaurate, 88.7g (0.4mol) isophorone diisocyanate, reacted for 3 hours. Add 2.7g (0.02mol) dimethylol propionic acid and react for 3 hours. Add 4.9 g of hydroxyl-terminated hyperbranched polyester (containing 0.015 mol of hydroxyl) with a molecular weight of 5000 g / mol and a functionality of 15, and react for 2 hours. Continue to add 1.4g (0.01mol) dimethylol propionic acid to react for 3 hours. Cool down to normal temperature, add 2g (0.02mol) neutralizing agent triethylamine, and stir for 10 minutes. Add 0.8g (0.002mol) diisooctyl sulfonate sodium succinate to prepare a hyperbranched structure modified polyurethane polymer.

[0040] Continue to add 500.5 g of deionized water, stir for 0.5 hour, a...

Embodiment 2

[0043] Take by weighing 200g (0.1mol) molecular weight is the aliphatic polyether diol of 2000g / mol, 100g (0.05mol) molecular weight is the aliphatic polyester diol of 2000g / mol, 100 ℃ of decompression dehydration, cooling to 60°C, blow nitrogen, add 0.1g catalyst dibutyltin dilaurate, 166.3g (0.75mol) isophorone diisocyanate, react for 5 hours. Add 30.2g (0.225mol) dimethylol propionic acid and react for 3 hours. Add 99.3 g of hydroxyl-terminated hyperbranched polyester (containing 0.3 mol of hydroxyl) with a molecular weight of 15 and a molecular weight of 5000 g / mol, and react for 2 hours. Continue to add 30.2g (0.225mol) dimethylol propionic acid to react for 3 hours. Cool down to normal temperature, add 45.5g (0.45mol) neutralizing agent triethylamine, and stir for 10 minutes. Add 52.8g (0.135mol) sodium diisooctyl sulfonate to prepare a hyperbranched structure modified polyurethane polymer.

[0044] Continue to add 724.3 g of deionized water, stir for 0.5 hour, and fi...

Embodiment 3

[0048] Take by weighing 200g (0.1mol) molecular weight is the aliphatic polyether diol of 2000g / mol, 20g (0.01mol) molecular weight is the aliphatic polyester diol of 2000g / mol, 100 ℃ of decompression dehydration, cooling to 70°C, blowing nitrogen, adding 0.1g catalyst dibutyltin dilaurate, 73.2g (0.33mol) hexamethylene diisocyanate, and reacting for 3 hours. Add 8.9g (0.066mol) of dimethylol propionic acid and react for 3 hours. Add 30.2 g of hydroxyl-terminated hyperbranched polyester (containing 0.009 mol of hydroxyl) with a molecular weight of 50,000 g / mol and a functionality of 15, and react for 2 hours. Continue to add 5.4g (0.04mol) dimethylol propionic acid to react for 3 hours. Cool down to normal temperature, add 10 g (0.099 mol) of neutralizing agent triethylamine, and stir for 10 minutes. Add 7.8g (0.02mol) diisooctyl sulfonate sodium succinate to prepare hyperbranched structure modified polyurethane polymer.

[0049] Continue to add 1422g deionized water, stir ...

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Abstract

The invention discloses a water-borne hyperbranched structure modified polyurethane polymer and a preparation method thereof, and a self-repair diffuse reflection coating composition. The preparationof the polymer comprises the following steps: performing reduced pressure vacuumization on aliphatic polyether diol and aliphatic polyester glycol at a temperature of 90-150 DEG C, cooling to 60-90 DEG C, and adding a catalyst and aliphatic diisocyanate; adding a hydrophilic chain extender for reacting for 1-3 hours; adding a hydroxy-terminated hyperbranched polymer, and reacting for 1-2 hours; adding a hydrophilic chain extender, and reacting for 1-2 hours; cooling to a normal temperature, and adding a neutralizer to regulate the pH value to 7-9; adding a sulfonate hydrophilic chain extenderand deionized water for reacting for 0.5-1 hour, thereby obtaining the water-borne hyperbranched structure modified polyurethane polymer. The self-repair diffuse reflection coating composition disclosed by the invention comprises the polyurethane polymer, and the coating composition has self-repair and diffuse reflection properties, is excellent in transparency, and also has excellent hardness andflexibility.

Description

technical field [0001] The invention relates to the field of polyurethane coatings, in particular to a water-based hyperbranched structurally modified polyurethane polymer and a preparation method thereof, and also to a self-repairing diffuse reflection coating composition. Background technique [0002] With the upgrading of social industrial level and people's consumption level, consumers have more and more strict requirements on the appearance, touch and experience comfort of daily necessities and industrial products. Many high-end products begin to attract the public's attention with their beautiful, comfortable appearance and touch. The application of anti-glare coating also arises at the historic moment. With its beautiful appearance and comfortable human physiological touch, it has gradually occupied a place in the automotive interior, electronic products and other industries, and has gradually gained more favor. [0003] Anti-glare materials can be divided into two ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/32C08G18/34C09D175/04C09D175/06C09D175/08C09D5/33
CPCC08G18/4018C08G18/4202C08G18/4804C08G18/4825C08G18/66C08G18/6625C09D5/004C09D175/04C09D175/06C09D175/08
Inventor 白永平岳利培李卫东李夏倩殷晓芬
Owner HARBIN INST OF TECH WUXI RES INST OF NEW MATERIALS
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