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Waterborne acrylic modified polyurethane hybrid resin prepared by solvent-free method

A technology of water-based acrylic and hybrid resin, applied in the direction of coating, anti-corrosion coating, etc., to achieve the effect of excellent adhesion

Inactive Publication Date: 2017-12-08
UNION FOSHAN CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In recent years, the research and development of water-based resins in my country has developed rapidly, which basically meets the needs of national economic construction, but there is still a large gap between them and the advanced countries in the world in terms of variety, quantity and technology.

Method used

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  • Waterborne acrylic modified polyurethane hybrid resin prepared by solvent-free method
  • Waterborne acrylic modified polyurethane hybrid resin prepared by solvent-free method
  • Waterborne acrylic modified polyurethane hybrid resin prepared by solvent-free method

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A kind of waterborne acrylic acid modified polyurethane hybrid resin, its preparation process is as follows:

[0039] a), in a four-port reactor equipped with a thermometer, a condenser, and an agitator, 6.0 parts of polytetrahydrofuran diol, 3.0 parts of butanediol, 1.5 parts of trimethylolpropane, two 2.6 parts of hydroxymethylpropionic acid, heat up to 95-110°C, dehydrate under vacuum for 1.5-2.0 hours;

[0040] b), the temperature is lowered to 60-70°C, 16.0 parts of hexamethylene diisocyanate is added, and N 2 , dropwise adding 0.05 part of dibutyltin dilaurate, and then heating up to 80-82°C for 2-2.5 hours to obtain the hydrophilic polyurethane prepolymer;

[0041] c) Prepare 16.0 parts of methyl methacrylate and butyl acrylate mixed monomer in advance, take 8 parts of it and add it to the hydrophilic polyurethane prepolymer until the viscosity is moderate, cool down to 70°C, add hydroxyethyl acrylate 1.5 parts of ester, continue to react for 1.5h, and check un...

Embodiment 2

[0045] A kind of waterborne acrylic acid modified polyurethane hybrid resin, its preparation process is as follows:

[0046] a) In a four-port reactor equipped with a thermometer, a condenser, and an agitator, add 6.0 parts of polycarbonate diol, 4.0 parts of dipropylene glycol, and 2.0 parts of trimethylolpropane in sequence according to the weight percentage of the formula ,, 3.0 parts of dimethylolpropionic acid, heat up to 95-110°C, dehydrate under vacuum for 1.5-2.0 hours;

[0047] b), cooling down to 60-70°C, adding 17.0 parts of isophorone diisocyanate, passing through N 2 , dropwise adding 0.05 part of dibutyltin dilaurate, and then heating up to 80-82°C for 2-2.5 hours to obtain the hydrophilic polyurethane prepolymer;

[0048] c) Add 8 parts of methyl methacrylate monomer to the hydrophilic polyurethane prepolymer until the viscosity is moderate, cool down to 70°C, add 1.8 parts of hydroxyethyl acrylate, continue the reaction for 1.5 hours, and detect when Until th...

Embodiment 3

[0052] A kind of waterborne acrylic acid modified polyurethane hybrid resin, its preparation process is as follows:

[0053] a) In a four-port reactor equipped with a thermometer, a condenser, and an agitator, add 6.0 parts of polycarbonate diol, 4.0 parts of dipropylene glycol, 1.5 parts of glycerin, and dimethylol in sequence according to the weight percentage of the formula 3.5 parts of propionic acid, heated to 95-110°C, dehydrated under vacuum for 1.5-2.0 hours;

[0054] b), cooling down to 60-70°C, adding 15.0 parts of hexamethylene diisocyanate, passing through N 2 , drop 0.05 part of dibutyltin dilaurate, then raise the temperature to 80-82°C for 2-2.5 hours to obtain the hydrophilic polyurethane prepolymer;

[0055] c) Prepare 12.0 parts of mixed monomers of methyl methacrylate and butyl methacrylate in advance, take 7 parts of mixed monomers and add them to the hydrophilic polyurethane prepolymer until the viscosity is moderate, and cool down to 70°C , add 2.0 part...

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Abstract

The invention relates to waterborne acrylic modified polyurethane hybrid resin. The waterborne acrylic modified polyurethane hybrid resin is composed of a polyurethane copolymer chain segment and an acrylic copolymer chain segment and is prepared from the following components: diisocyanate, oligomer polyol, polyol, dihydromethyl propionic acid, organic tin, hydroxyethyl acrylate, an acrylic monomer, ammonium persulfate, a neutralizer and de-ionized water. A solvent-free preparation method of the waterborne acrylic modified polyurethane hybrid resin, provided by the invention, meets green production requirements. The waterborne acrylic modified polyurethane hybrid resin prepared by the solvent-free preparation method, has the glass transition temperature Tg of 35 DEG C to 70 DEG C, the molecular weight of 4500 to 5500, the emulsion grain diameter of 150nm to 280nm, the pH (Potential of Hydrogen) of 7.5 to 8.5 and zero VOC (Volatile Organic Compounds) and has good adhesion force, water resistance, alkali resistance, ageing resistance and salt fog resistance; the waterborne acrylic modified polyurethane hybrid resin is widely applied to waterborne wood coating, waterborne anticorrosive coating, waterborne steel-structure coating, waterborne engineering coating and the like.

Description

technical field [0001] The invention relates to a water-based acrylic modified polyurethane resin, in particular to a solvent-free method for preparing a water-based acrylic modified polyurethane hybrid resin, and belongs to the technical field of water-based resin synthesis. Background technique [0002] In recent years, with the increasing attention of human beings to environmental pollution and the depletion of global oil resources, the use of solvent-based coatings has been greatly limited. Low-VOC and low-toxicity coatings such as water-based coatings, high-solid coatings, powder coatings, etc. The R&D and production of wood coatings and radiation-cured coatings have developed rapidly. Among them, water-based coatings, because water is used as the dispersion medium, have no pollution, no fire hazards, low production costs, conform to green production, and have very broad development prospects. [0003] Acrylic resins are usually prepared by free radical polymerization,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D5/08C08G18/48C08G18/44C08G18/73C08G18/75C08G18/32C08G18/34C08G18/66C08G18/67C08F283/00C08F220/14C08F220/18
CPCC08F283/008C08G18/0823C08G18/3206C08G18/348C08G18/44C08G18/4854C08G18/672C08G18/73C08G18/755C08G2150/90C08K3/36C09D5/08C09D151/08C08G18/6692C08F220/1804
Inventor 许钧强张武康伦国姚东生
Owner UNION FOSHAN CHEM
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