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Colored copolymerized epoxy modified waterborne polyurethane and preparation method thereof

A water-based polyurethane and epoxy modification technology, applied in the field of polymer materials, can solve problems such as environmental pollution, and achieve the effects of avoiding large-scale use, low viscosity and moderate viscosity

Inactive Publication Date: 2019-03-12
安徽清彩科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, a large amount of organic solvents need to be used in the existing polyurethane synthesis process, and the use of organic solvents will cause problems such as environmental pollution.

Method used

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  • Colored copolymerized epoxy modified waterborne polyurethane and preparation method thereof
  • Colored copolymerized epoxy modified waterborne polyurethane and preparation method thereof
  • Colored copolymerized epoxy modified waterborne polyurethane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 10.0 g of PTMG (M n =1000) and 60.0 grams of BY3305 (M n =2000) dehydration at 100-120°C for 0.5-1.5 hours, then added 35.0 grams of IPDI, reacted at 90°C for 2 hours, added 10.0 grams of BDO, 0.89 grams of DYE1, reacted at 70°C for 2 hours, then added 0.094 grams of HQ and 0.851 g of HEMA was kept reacting at 60°C for 1.5 hours to obtain a polyurethane prepolymer with double bonds in the terminal group; then add 0.09 g of AIBN, 6.2 g of glycidyl methacrylate, add 100 mL of acetone, and add 285 mL of water under high-speed shearing , after stirring for 30 minutes, the reaction product was removed from the solvent acetone at 40°C and 0.01MPa vacuum conditions to obtain a block anionic water-based polyurethane emulsion Epoxy with a solid content of 30wt% and a glycidyl methacrylate content of 5.08wt%. -WPU1.

[0035] Among them, the structural formula of DYE1 is:

Embodiment 2

[0037] 5.0 grams of PCL (M n =1000) and 55.0 grams of BY3301 (M n=2000) was dehydrated at 100-120°C for 0.5-1.5 hours, then added 23.51 grams of TDI, reacted at 80°C for 2 hours, added 9.5 grams of DEG, 0.2 grams of TMP, 0.89 grams of DYE4, reacted at 70°C for 2 hours, then added 0.09 grams of BHT and 1.532 grams of HEMA were kept reacting at 60 ° C for 1 hour to obtain a polyurethane prepolymer with double bonds in the terminal group; 228mL of water was added under the pressure, and after stirring for 30 minutes, the reaction product was desolventized by acetone under 40°C and 0.01MPa vacuum conditions, and a block anionic compound with a solid content of 30wt% and a glycidyl methacrylate content of 3.07wt% was obtained. Water-based polyurethane emulsion Epoxy-WPU2.

[0038] Among them, the structural formula of DYE4 is

Embodiment 3

[0040] 50.0 grams of PPG (M n =2000), 6.0 g BY3306 (M n =550±30, effective content 70%±2) and 10.0 grams of BY3301 (M n =2000) was dehydrated at 100-120°C for 0.5-1.5 hours, then added 30.1 grams of IPDI, reacted at 80°C for 2 hours, added 5.1 grams of EG, 0.89 grams of DYE2, 0.15 grams of TIPA, reacted at 70°C for 2 hours, then added 0.06 g of BQ and 1.01 g of HPA were kept reacting at 60 ° C for 1 hour to obtain a polyurethane prepolymer with double bonds in the end group; then add 0.08 g of AIBN, 6.0 g of glycidyl methacrylate, add 130 mL of acetone, Add 254mL of water at low temperature, stir for 30 minutes, and remove the solvent acetone from the reaction product under 40°C and 0.01MPa vacuum conditions to obtain a block anionic compound with a solid content of 30wt% and a glycidyl methacrylate content of 5.51wt%. Water-based polyurethane emulsion Epoxy-WPU3.

[0041] Among them, the structural formula of DYE2 is

[0042] If other conditions of Example 3 remain unch...

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Abstract

The invention discloses colored copolymerized epoxy modified waterborne polyurethane and a preparation method thereof and relates to the technical field of high polymer materials. The colored copolymerized epoxy modified waterborne polyurethane comprises, by weight, 0.1-70% of macromolecular diol, 0.1-70% of hydroxyl terminated sulfonate polyester diol, 15-50% of diisocyanate, 1.5-11% of diol chain extender, 0.1-11% of colored micromolecular diol, 0.01-0.08% of dibutyltin dilaurate, 0.2-6% of end capping agent, 0.01-0.5% of polymerization inhibitor, 0.01-0.8% of initiator and 0.1-12% of glycidyl methacrylate. Epoxy groups in the copolymerized epoxy modified waterborne polyurethane synthesized by the preparation method can be stably stored in molecular structure, and an emulsion can be stored for a long time and high in stability; hydroxyl terminated sulfonate polyester diol is adopted as a raw material, so that solvent consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a color copolymerization type epoxy-modified waterborne polyurethane and a preparation method thereof. Background technique [0002] Water-based polyurethane uses water as the dispersion medium to replace the organic solvent in traditional polyurethane. It is a new type of polyurethane material that is green, environmentally friendly and pollution-free. Water-based polyurethane, in recent years, with the strengthening of national governance and environmental protection, water-based polyurethane materials with good mechanical and mechanical properties are widely used in coatings, inks, adhesives, fabric coatings and finishing agents, leather finishing agents, paper surface treatment Agents and fiber surface treatment agents and other fields. However, most of the water-based PU is currently prepared by the self-emulsification method, with PU containing hydrop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/00C08F220/32C08G18/67C08G18/66C08G18/48C08G18/44C08G18/42C08G18/46C08G18/32
CPCC08F283/008C08G18/3206C08G18/4018C08G18/4277C08G18/44C08G18/4676C08G18/4825C08G18/4854C08G18/672C08F220/325
Inventor 李军配李怡霞吴祥松杨文东
Owner 安徽清彩科技有限公司
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