A kind of hyperbranched organosilicon wetting agent for aqueous polyurethane and preparation method thereof

A water-based polyurethane and silicone technology, which is applied in the field of synthetic leather chemical industry and leather, can solve unseen problems, achieve low viscosity, excellent ability to reduce surface tension, and high surface activity effect

Active Publication Date: 2021-11-02
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few studies on hyperbranched silicone surfactants, and there are basically no research reports on hyperbranched silicone wetting agents for waterborne polyurethane

Method used

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  • A kind of hyperbranched organosilicon wetting agent for aqueous polyurethane and preparation method thereof
  • A kind of hyperbranched organosilicon wetting agent for aqueous polyurethane and preparation method thereof
  • A kind of hyperbranched organosilicon wetting agent for aqueous polyurethane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] After the addition was weighed in a dry, clean and good 250mL three-neck flask 42.10g of diethanolamine DEA 10mL of methanol and the mixture was stirred for twenty diethanolamine DEA completely dissolved at room temperature with a stirring rod, MA methyl acrylate was poured into a solution of 69.087g tube then the three-necked flask equipped with a stir bar frame, and a condenser tube was added dropwise to a bath of oil, will begin at 35 ℃ methacrylate MA three-necked flask was slowly added dropwise, IH dropwise addition, the reaction incubated 4h and then subjected to suction filtration with vacuum suction machine circulating water to remove methanol and excess methyl acrylate MA obtained as a colorless transparent oil AB 2 Type monomers. The obtained monomer into a clean glass container for use.

[0040] P-toluenesulfonic acid, the preparation was added 17.89g trimethylolpropane TMP 0.48g and dried in a clean three-neck flask 70.23gAB 2 Monomer was poured into the droppin...

Embodiment 2

[0043] After the addition was weighed in a dry, clean and good 250mL three-neck flask 42.11g of diethanolamine DEA 10mL of methanol and the mixture was stirred for twenty diethanolamine DEA completely dissolved at room temperature with a stirring rod, was poured into the solution of 69.1g of methyl acrylate MA tube then the three-necked flask equipped with a stir bar frame, and a condenser tube was added dropwise to a bath of oil, will begin at 35 ℃ methacrylate MA three-necked flask was slowly added dropwise, IH dropwise addition, the reaction incubated 4h and then subjected to suction filtration with vacuum suction machine circulating water to remove methanol and excess methyl acrylate MA obtained as a colorless transparent oil AB 2Type monomers. The obtained monomer into a clean glass container for use.

[0044] P-toluenesulfonic acid, the preparation was added 17.94g trimethylolpropane TMP and 0.649g in dry and clean three-neck flask 72gAB 2 Monomer was poured into the droppin...

Embodiment 3

[0047] After the addition was weighed in a dry, clean and good 250mL three-neck flask 42.12g of diethanolamine DEA 10mL of methanol and the mixture was stirred for twenty diethanolamine DEA completely dissolved at room temperature with a stirring rod, was poured into the solution of 69.1g of methyl acrylate MA tube then the three-necked flask equipped with a stir bar frame, and a condenser tube was added dropwise to a bath of oil, will begin at 35 ℃ methacrylate MA three-necked flask was slowly added dropwise, IH dropwise addition, the reaction incubated 4h and then subjected to suction filtration with vacuum suction machine circulating water to remove methanol and excess methyl acrylate MA obtained as a colorless transparent oil AB 2 Type monomers. The obtained monomer into a clean glass container for use.

[0048] P-toluenesulfonic acid, the preparation was added 17.79g trimethylolpropane TMP and 0.645g in dry and clean three-neck flask 73.24gAB 2 Monomer was poured into the dro...

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Abstract

The invention relates to the technical field of leather and synthetic leather chemicals, in particular to a hyperbranched organic silicon wetting agent for water-based polyurethane and a preparation method thereof. Using hydroxyl-terminated hyperbranched polymer and epoxy-terminated silicone oil as raw materials, the ring-opening reaction is carried out under the action of a catalyst to finally prepare a hyperbranched silicone wetting agent. The hyperbranched silicone wetting agent prepared by the invention can effectively reduce the surface tension of water, can significantly reduce the surface tension of the water-based polyurethane emulsion, and improve the wetting and leveling property of the water-based polyurethane material on the surface of a substrate.

Description

Technical field [0001] The present invention relates to a leather, synthetic leather chemical technology, particularly relates to an aqueous polyurethane hyperbranched silicone wetting agent and preparation method thereof. Background technique [0002] Production of a conventional synthetic leather, requires a large amount of a polyurethane resin. Using a solvent-based polyurethane material containing a large amount of toxic solvents, pollution of air and human health and safety environment. Increasing standard of living people with a variety of restrictions on volatile organic compounds (VOC) emissions, the continued with the introduction of harmful environmental regulations BACKGROUND solvent content, the aqueous polyurethane dispersion in water, non-toxic, non-flammable, does not pollute the environment, safe and reliable synthetic leather industry has become an important direction for future development. However, conventional aqueous polyurethane there are still some drawback...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C08G77/42C08L75/04C08L87/00C09D7/47C09D7/65
CPCC08G77/42C08G83/005C08G83/006C08L75/04C09D7/47C09D7/65C08L87/005
Inventor 刘洁张斐斐宋迎虎李彦春
Owner QILU UNIV OF TECH
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