Self-emulsified nonionic terpenyl epoxy resin polyalcohol emulsion and preparation method and application

A terpene-based epoxy resin, non-ionic technology, applied in the field of polyols, can solve problems such as complex synthesis process, and achieve the effects of excellent ultraviolet resistance, simple manufacturing method, and excellent mechanical and mechanical properties

Active Publication Date: 2010-12-15
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

The raw materials for the synthesis of such water-based polyols are mostly traditional fossil resources, and the synthesis process is generally more complicated

Method used

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  • Self-emulsified nonionic terpenyl epoxy resin polyalcohol emulsion and preparation method and application
  • Self-emulsified nonionic terpenyl epoxy resin polyalcohol emulsion and preparation method and application
  • Self-emulsified nonionic terpenyl epoxy resin polyalcohol emulsion and preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 80.1g TME, 6.4g PEG with an average relative molecular weight of 6000, and 7.4g TMP to a three-neck flask equipped with a thermometer, a stirrer, and a condenser tube, heat and stir to 90°C, add 1.21g sulfuric acid (diluted with 5.6g acetone) , maintain the reaction at 110°C for 1 hour; after the reaction, stir and disperse directly with deionized water to obtain a milky white polyol emulsion with a hydroxyl value of 100mg / g (solid resin) and a viscosity of 61mPa·s (25°C, 40% solid content) , Z average particle size 194nm. The infrared spectrum of the polyalcohol is shown as figure 1 As shown, the particle size distribution is as figure 2 shown.

[0033] Take 10.0g of the above-mentioned polyol emulsion (40% solid content), add 2g of hydrophilic modified polydiisocyanate S100, stir and mix evenly, dilute with 2g of water, coat the film, and measure the performance of the paint film after 7 days of maintenance at room temperature. Table 1.

Embodiment 2

[0035] In a three-neck flask equipped with a thermometer, a stirrer, and a condenser tube, add 40g HTME, 7.2g PEG with an average relative molecular weight of 10000, and 7.5g TMP respectively, heat and stir to 90°C, add 0.40g boron trifluoride diethyl ether (with 2.7g Diluted with acetone), maintain the reaction at 110°C for 2h; after the reaction, stir and disperse directly with deionized water to obtain a milky white polyol emulsion with a hydroxyl value of 200mg / g (solid resin) and a viscosity of 579mPa·s (25°C, 30% Solid content), Z average particle size 256nm.

[0036]Take 10.0g of the above-mentioned polyol emulsion (30% solid content), add 2g of hydrophilic modified polydiisocyanate S100, stir and mix evenly, dilute with 2g of water, coat the film, and measure the performance of the paint film after 7 days of maintenance at room temperature. Table 1.

Embodiment 3

[0038] In a three-neck flask equipped with a thermometer, a stirrer, and a condenser tube, add 37g TME, 3.7g PEG with an average relative molecular weight of 4000, and 7.6g TMP respectively, heat and stir to 90°C, add 0.46g boron trifluoride diethyl ether (with 2.6g Diluted with acetone), maintain the reaction at 115°C for 2h; after the reaction, stir and disperse directly with deionized water to obtain a milky white polyol emulsion with a hydroxyl value of 250mg / g (solid resin) and a viscosity of 21mPa·s (25°C, 40% Solid content), Z average particle size 295nm.

[0039] Take 10.0g of the above-mentioned polyol emulsion (40% solid content), add 3.2g of hydrophilic modified polydiisocyanate S100, stir and mix evenly, dilute with 1g of water, apply a film, and measure the performance of the paint film after 7 days of maintenance at room temperature As in Table 1.

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Abstract

The invention discloses self-emulsified nonionic terpenyl epoxy resin polyalcohol emulsion and a preparation method and application. The method comprises the following steps of: reacting hydroxyl and an epoxy group under the action of a catalyst by using a terpinene-maleic eater (TME) or a hydrogenated terpinene-maleic eater (HTME), polyethylene glycol (PEG) and a micro-molecule hydroxy chain extender; introducing a hydrophilic chain section polyethylene glycol (PEG) into a product to obtain a polyalcohol pre-polymer; and directly dispersing the polyalcohol pre-polymer with water to obtain the self-emulsified nonionic terpenyl epoxy resin polyalcohol emulsion. The polyalcohol emulsion is a bi-component waterborne polyurethane system consisting of a hydroxy component and polyisocyanate and can be widely applied to waterborne polymer systems such as paint, an adhesive and the like. The emulsion has the advantages of simple and convenient preparation method, clean preparation process, no solvent in a reaction process and high dispersion stability. The hydroxyl value of a polyalcohol resin is adjustable along with the adding amount of the micro-molecule chain extender. A prepared bi-component waterborne polyurethane paint film has high heat resistance and mechanical property.

Description

technical field [0001] The invention relates to a polyol used in the field of water-based polyurethane, in particular to a method for preparing a self-emulsifying nonionic terpene-based epoxy resin polyol emulsion and its combination with polyisocyanate as a water-based polyol component to obtain a two-component Use of water-separating polyurethane systems. Background technique [0002] With the improvement of people's awareness of environmental protection and the improvement of environmental regulations, the emission of volatile organic compounds (VOC) in traditional solvent-based coatings is increasingly restricted. Water-based coatings use water as the dispersion medium, and have the advantages of being non-flammable, non-toxic, non-polluting, and energy-saving. Two-component waterborne polyurethane coatings combine the high performance of two-component solvent-based polyurethane coatings with the low VOC content of waterborne coatings, and have become a hot spot in coat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/14C08L63/00C09D175/04C09J175/04C08G18/58
Inventor 孔振武吴国民陈健霍淑平
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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