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.
CN101701059AInactive Publication Date: 2010-05-05INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
Publication Date
2010-05-05
Estimated Expiration
Not applicable · inactive patent

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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.
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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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