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Color-changing polyurethane acrylic dyestuff resin and preparation method

A polyurethane acrylic and dye resin technology, applied in dyeing, textile and papermaking, etc., can solve the problems of high hardness, poor solvent resistance, low tensile strength, etc., and achieve bright colors, good color fastness, non-toxic use. Effect

Active Publication Date: 2018-09-14
安徽科翌新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyacrylate has the advantages of good gloss retention, stain resistance, weather resistance, and good transparency, but has disadvantages such as high hardness, poor solvent resistance, and low tensile strength.

Method used

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  • Color-changing polyurethane acrylic dyestuff resin and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take 0.15 mol of polytetrahydrofuran glycol 800 and add it to a four-necked flask equipped with a thermometer, agitator, reflux condenser and dropping funnel. The temperature is raised to 110°C and dehydrated. After 1 hour, nitrogen is introduced to cool to 80°C, and 0.30 mol is added. Isophorone diisocyanate (IPDI) and 0.0003mol stannous octoate (T 9 ), keep for 3h, add 40ml methyl ethyl ketone to adjust the viscosity, cool to 60℃, add 0.12mol Sudan orange G, heat up 90℃, and react for about 3h. Reduce the temperature to 85°C, add 0.035mol hydroxypropyl acrylate (HPA), react for about 3h, add 40ml acetone to adjust the viscosity. Reduce the temperature to 70°C, add 0.1 mol acrylate, 0.1 mol methyl methacrylate, and azobisisobutyronitrile in batches, with an interval of 20 minutes each time, about 3 hours to complete the addition, and keep the temperature for 5 hours. The temperature is increased to 110°C, the solvent is removed in a vacuum, and it is naturally lowered t...

Embodiment 2

[0024] Take 0.15 mol of polyoxypropylene glycol and add it to a four-necked flask equipped with a thermometer, agitator, reflux condenser and dropping funnel. The temperature is raised to 110°C and dehydrated. After 1 hour, the temperature is reduced to 80°C by nitrogen gas, and 0.30 mol is added. 4,4-Diphenylmethane diisocyanate (MDI) and 0.0003mol dibutyltin dilaurate (T 12 ), heat preservation for 3h, add 40ml methyl ethyl ketone to adjust the viscosity, reduce the temperature to 60℃, add 0.12mol Sudan orange G, increase the temperature at 80℃, and react for about 3h. Add 0.035mol of hydroxypropyl acrylate (HPA), react for about 3h, and add 40ml of acetone to adjust the viscosity. Reduce the temperature to 70°C, add 0.1 mol methyl methacrylate, 0.1 mol styrene, and azobisisobutyronitrile in batches, with an interval of 20 minutes each time, about 3 hours to complete the addition, and heat preservation for 6 hours. The temperature is increased to 110°C, the solvent is removed...

Embodiment 3

[0027] Take 0.16 mol of polytetrahydrofuran glycol 1000, add it to a four-necked flask equipped with a thermometer, stirrer, reflux condenser and dropping funnel, heat it up to 110℃, dehydrate, after 1h, blow in nitrogen to cool to 90℃, add 0.30 mol Hexamethylene diisocyanate (HDI) and 0.0003mol stannous octoate (T 9 ), heat preservation for 3h, add 40ml methyl ethyl ketone to adjust the viscosity, cool to 60℃, add 0.05mol solvent orange 3 and 0.05 Sudan orange G, increase the temperature at 90℃, and react for about 3h. Add 0.045 mol of hydroxyethyl methacrylate (H E M A), react for about 3 hours, and add 40 ml of acetone to adjust the viscosity. Reduce the temperature to 70°C, add 0.1 mol acrylate, 0.1 mol methyl methacrylate, and benzoyl peroxide in batches, with an interval of 20 minutes each time, approximately 3 hours to complete the addition, and keep the temperature for 5 hours. The temperature is increased to 110°C, the solvent is removed in a vacuum, and the temperatur...

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Abstract

The invention relates to color-changing polyurethane acrylic dyestuff resin and a preparation method. According to the color-changing polyurethane acrylic dyestuff resin, a double-bond-containing polyurethane dyestuff prepolymer is prepared from macromolecular polyol, polybasic isocyanate, a dyestuff and a hydroxyl acrylate monomer through step-by-step polymerization; then an initiator and an acrylate monomer are added and are subjected to solution polymerization to prepare the color-changing polyurethane acrylic dyestuff resin. The color-changing dyestuff is very stable and has a bright color; the obtained polyurethane acrylic dyestuff resin has an obvious photochromic property; the defects in the aspect of application of a small molecular azo dyestuff and limitation to an application field are overcome; the dyestuff is joined in a polymer molecular chain through a chemical bonding manner and the advantages of the dyestuff of friction resistance, migration resistance, staining resistance, gloss retention, safety in utilization and the like are obviously improved. The synthesized polyurethane acrylic dyestuff resin has excellent performance of polyurethane and acrylate. The color-changing polyurethane acrylic dyestuff resin has excellent thermal stability and processing performance, and has a wide application prospect in the fields of advanced materials including information storage and protection materials, liquid crystal displays, non-linear optical materials and the like.

Description

Technical field [0001] The invention relates to a preparation of polyurethane acrylic, in particular to a color-changing polyurethane acrylic dye resin and a preparation method. The polyurethane acrylic has good photochromic properties, and has broad application prospects in the fields of advanced materials such as information storage, protective materials, liquid crystal displays, and nonlinear optical materials. Background technique [0002] Azo dyes contain -N=N-azo groups in their molecular chains. Under light conditions, azo dyes have photochromic properties due to conformational changes of the azo groups in the structure. The number of small molecule azo dyes accounts for about 80% of the total amount of organic dyes, and has become the most widely used synthetic dye in various industries. Azo dye molecules contain an azo group (-N=N-), the azo bond is connected to a phenyl or naphthyl group, and the phenyl or naphthyl group is connected to -CR, -CH 3 , -NH 2 , -SO 3 , -NO...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/75C08G18/73C08G18/67C08G18/48D06P1/00
CPCC08G18/4825C08G18/4854C08G18/673C08G18/73C08G18/755C08G18/7671D06P1/0052
Inventor 胡先海刘蔓莉程从亮李根刘翔
Owner 安徽科翌新材料有限公司
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