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A kind of emulsifier suitable for aqueous polyurethane synthesis and its preparation method and application

A technology of water-based polyurethane and emulsifier, which is applied in the field of water-based polyurethane, can solve problems such as the structure design of the emulsifier that has not been proposed, and achieve the effect of eliminating influence, simple process and good stability

Active Publication Date: 2018-04-24
传化智联股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned patents all use the prepolymer mixing method to prepare water-based polyurethane emulsion through resin blending, and do not propose an exact emulsifier structure design, and cannot fully utilize the advantages of external emulsification

Method used

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  • A kind of emulsifier suitable for aqueous polyurethane synthesis and its preparation method and application
  • A kind of emulsifier suitable for aqueous polyurethane synthesis and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Stir 1 mol of methyl ethyl ketone oxime and 1 mol of toluene diisocyanate under the protection of nitrogen, and react at a temperature of 90°C for 1.5 hours to obtain compound A; React for 4 hours to obtain compound B, then add 1 mol of methylcyclohexyl diisocyanate, stir evenly under the protection of nitrogen, and react at a temperature of 60°C for 4 hours to obtain compound C; add 0.5 mol of dimethylol propionic acid, Stir evenly under low temperature, and react at a temperature of 90° C. for 2.5 hours to obtain an emulsifier suitable for synthesizing water-based polyurethane.

[0033] 50g of polybutylene adipate diol with a molecular weight of 500 was vacuum dehydrated at 110°C for 1.5h, cooled to 65°C, added 39g of TDI, stirred for 0.5h under nitrogen protection, and added 0.015g of dibutyltin dilaurate , at 80°C, react for 2h; add 1g DMPA, 1g 1,4-butanediol, 2g neopentyl glycol, 10g butanone, 5g N-methylpyrrolidone, react at 80°C for 3h, cool down to 50 ℃, to obt...

Embodiment 2

[0035] 1 mol of caprolactam and 1 mol of toluene diisocyanate were stirred evenly under the protection of nitrogen, and reacted at a temperature of 60°C for 3 hours to obtain compound A; React at ℃ for 2.5h to obtain compound B, then add 1mol of 2,4-ethylbenzene diisocyanate, stir evenly under the protection of nitrogen, react at a temperature of 90℃ for 2.5h to obtain compound C; add 1mol of malic acid, Stir evenly under protection, and react at a temperature of 60° C. for 4 hours to obtain an emulsifier suitable for synthesizing water-based polyurethane.

[0036] 50g of polybutylene adipate diol with a molecular weight of 500 was dehydrated under vacuum for 1.5h at 110°C, cooled to 65°C, added 50g of IPDI, stirred for 0.5h under nitrogen protection, added 0.02g of stannous octoate, and At 80°C, react for 2 hours; add 2g sodium ethylene dihydroxyethanesulfonate, 3g 2-methylpropanediol, 2g 3-methylpentanediol, 10g butanone, 5g N-methylpyrrolidone, and react at 80°C 3h, lower ...

Embodiment 3

[0038] Stir 1 mol of 3,5-dimethylpyrazole and 1 mol of isophorone diisocyanate evenly under the protection of nitrogen, and react at a temperature of 90°C for 1.5 hours to obtain compound A; Add and stir evenly, react at a temperature of 60°C for 4 hours to obtain compound B, then add 1 mol of toluene diisocyanate, stir evenly under nitrogen protection, and react at a temperature of 60°C for 4 hours to obtain compound C; Add butyric acid, stir evenly under the protection of nitrogen, and react at a temperature of 90° C. for 2.5 hours to obtain an emulsifier suitable for synthesizing waterborne polyurethane.

[0039] 150g of polypropylene glycol with a molecular weight of 2000 and 50g of polyether polyol N330 were vacuum dehydrated at 110°C for 1 hour, cooled to 65°C, added 40g of IPDI, 30g of HDI, stirred for 0.5h under nitrogen protection, added 0.15g of stannous octoate, and React for 2 hours at 80°C; add 6g of diethylene glycol, 2g of trimethylolpropane, and 30g of acetone,...

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Abstract

The invention discloses an emulsifier suitable for synthesizing waterborne polyurethane, a preparation method and application thereof. The existing patents all use the prepolymer mixing method to prepare water-based polyurethane emulsion through resin blending, and do not propose an exact emulsifier structure design, and cannot fully utilize the advantages of external emulsification. The emulsifier of the present invention uses polyurethane resin as the hydrophobic and lipophilic segment, and uses carboxylic acid alcohol, sulfamate, amino acid or hydroxysulfonate as the hydrophilic end compound, and the hydrophilic end passes through the isocyanate bond with the hydrophobic and lipophilic segment. React to connect. The emulsifier of the present invention has a hydrophobic segment of polyurethane resin and can provide better compatibility with polyurethane systems than ordinary emulsifiers, thereby providing an external emulsification water-based polyurethane emulsion with better stability than traditional emulsifiers.

Description

technical field [0001] The invention relates to the technical field of water-based polyurethane, in particular to an emulsifier suitable for synthesizing water-based polyurethane and its preparation method and application. Background technique [0002] Solvent-based polyurethane is widely used in the surface protection of wood products, adhesives, artificial leather and other fields due to its excellent performance. The environment is polluted. [0003] In recent years, countries around the world have gradually paid attention to the hazards of volatile organic compounds (VOC) in organic waste gas. The regulations on VOC control have become increasingly stringent. Some western developed countries have clearly stipulated the types and amounts of organic compounds emitted. Different from solvent-based polyurethane, water-based polyurethane uses water as the medium. Water is non-flammable, non-explosive, non-toxic, tasteless, does not pollute the environment, and has good const...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/34C08G18/38C08G18/32C08G18/12C08J3/03C08L75/06C08L75/08
Inventor 余冬梅王小君蒋文佳周银彬陈八斤陈英英
Owner 传化智联股份有限公司