Preparation method of cationic terpenyl epoxy resin polyalcohol water dispersoid and application thereof

A type of terpene-based epoxy resin and terpene-based epoxy resin technology are applied in the field of preparation and application of cationic terpene-based epoxy resin polyol water dispersion, and can solve the problem that the molecular weight of polyurethane polyol is difficult to control and the viscosity is high. and other problems, to achieve the effects of excellent mechanical properties, simple manufacturing method, and clean manufacturing process.

Inactive Publication Date: 2010-05-05
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

P.B.Jacobs and others use some polyhydroxy monomers such as trimethylolpropane to increase the hydroxyl functionality, but this method makes it difficult to control the molecular weight of polyurethane polyols and the viscosity is very high

Method used

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  • Preparation method of cationic terpenyl epoxy resin polyalcohol water dispersoid and application thereof
  • Preparation method of cationic terpenyl epoxy resin polyalcohol water dispersoid and application thereof
  • Preparation method of cationic terpenyl epoxy resin polyalcohol water dispersoid and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In a three-necked flask equipped with a thermometer, a stirrer, and a condenser tube, add 48.8g TME, 5.9g DEA, 14.3g polyethylene glycol 200, and 0.976g zinc chloride respectively, heat and stir, and react at 100°C for 7h; After finishing, cool to 70°C, neutralize the product with 3.2g acetic acid (diluted in 5.0g water), and then stir and disperse with deionized water to obtain a yellow transparent polyol water dispersion with a hydroxyl value of 248mg g -1 (solid resin), viscosity 2.047Pa s (25 ℃, 30% solid content), Z average particle size 35.4nm, the infrared spectrum of gained polyhydric alcohol is as follows figure 1 shown.

[0024] Take 20.0g of the above-mentioned polyol aqueous dispersion (30% solid content), add 9.6g of hydrophilic modified polydiisocyanate EC385 and 2.0g of PMA, mix and stir evenly by hand, paint a film, and test the paint after 7 days of maintenance at room temperature The membrane properties are listed in Table 1.

Embodiment 2

[0026] Add 36.5g TME, 4.4g DEA, and 4.8g 1,4-butanediol respectively to a three-necked flask equipped with a thermometer, agitator, and condenser, heat and stir evenly, and add 0.3ml titanium tetrachloride at 70°C, Raise the temperature to about 105°C and continue the reaction for 3 hours; after the reaction, cool to 65°C, neutralize the product with 2.4g of acetic acid (diluted in 5.0g of water), and then stir and disperse with deionized water to obtain a yellow transparent polyol aqueous dispersion. Hydroxyl value 288mg·g -1(solid resin), viscosity 2.451Pa·s (25°C, 30% solid content), Z-average particle size 40.2nm.

[0027] Take 20.0g of the above-mentioned polyol aqueous dispersion (30% solid content), add 10.9g of hydrophilic modified polydiisocyanate EC385 and 2.0g of PMA, mix and stir evenly by hand, paint a film, and test the paint after 7 days of maintenance at room temperature The membrane properties are listed in Table 1.

Embodiment 3

[0029] Add 35.1g TME, 4.2g DEA, 5.5g diethylene glycol and 0.702g zinc chloride to a three-necked flask equipped with a thermometer, agitator, and condenser respectively, heat and stir, and react at 100°C for 7h ; Cool to 70°C after the end, neutralize the product with 2.3g acetic acid (diluted in 5.0g water), then stir and disperse with deionized water to obtain a yellow transparent polyol water dispersion with a hydroxyl value of 277mg g -1 (solid resin), viscosity 2.221Pa·s (25°C, 30% solid content), Z-average particle size 36.9nm, TME epoxy value between 0.32-0.39mol / 100g.

[0030] Take 20.0g of the above-mentioned polyol aqueous dispersion (30% solid content), add 10.6g of hydrophilic modified polydiisocyanate EC385 and 2.0g of PMA, mix and stir evenly by hand, paint a film, maintain it at room temperature for 7 days, and then measure the paint The membrane properties are listed in Table 1.

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Abstract

The invention discloses a preparation method of cationic terpenyl epoxy resin polyalcohol water dispersoid and an application thereof. In the method, terpenyl maleic anhydride epoxy resin of glycidyl ester or hydrogenated terpenyl maleic anhydride epoxy resin of glycidyl ester is utilized to react with diethanol amine and micromolecule hydroxy chain extender under the action of catalyst to obtain the polyalcohol product, the polyalcohol product is neutralized with acid and directly disperses in water to obtain self-emulsifying cationic terpenyl epoxy resin polyalcohol water dispersoid. The polyalcohol water dispersoid is a bicomponent aqueous polyurethane system which is combined by hydroxyl component and polyisocyanate and can be widely applied to water paint, binding agent and polymer materials. The preparation method is simple and convenient, the preparation process is clean, the reaction process has no solvent, and stable self-emulsifying water dispersoid can be obtained with no need of stirring at a high speed; the hydroxyl value and the glass transition temperature of the polyalcohol resin can be adjusted along with the type and use level of the micromolecule chain extender; and the prepared bicomponent aqueous polyurethane paint film has excellent ultraviolet resistance and anti-yellowing performances.

Description

technical field [0001] The invention relates to a preparation method of a self-emulsifying cationic terpene-based epoxy resin polyol water dispersion and its use as a water-based polyol component combined with polyisocyanate to obtain a two-component water-based polyurethane system. Background technique [0002] With the strict restrictions on the content of volatile organic compounds (VOC) in coating systems in various countries' environmental protection regulations, waterborne polyurethane coatings that combine the high performance of solvent-based polyurethane coatings with the low VOC content of water-based coatings have become the fastest-growing coatings. one. There are many types of waterborne polyurethane coatings, which can be divided into one-component coatings and two-component coatings according to the packaging form. Water-based one-component polyurethane coatings are easy to construct, but they have many shortcomings such as chemical resistance, abrasion resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/14C08J3/03C08G18/58C08G18/67C09D175/04C09J175/04
Inventor 孔振武吴国民储富祥
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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