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首页> 外文期刊>Journal of Coating Technology >Oleochemical Polyols—A New Raw Material Source for Polyurethane Coatings and Floorings
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Oleochemical Polyols—A New Raw Material Source for Polyurethane Coatings and Floorings

机译：油脂化学多元醇—聚氨酯涂料和地板的新原料来源

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摘要

The efforts of both industrialized and developing countries to use and cultivate natural oils as a renewable source for food and foodstuff manufacture have led to a high growth in worldwide production of natural oils. These efforts have also led to an expansion of natural oils as a convenient raw material base for industrial applications. To use natural oils as raw materials for polyurethane production, multiple hy-droxyl functionality is required. Hy-droxyl functionality occurs naturally in castor oil and can be introduced synthetically in other natural oils with unsatur-ated sites by epoxidation followed by ring opening. Ring opening can be accomplished by reaction with alcohols, amino alcohols, or acids. Hydroxyl functionality can also be obtained by esterifi-cation or transesterification with excess polyol. Dimerization of oleic alcohol, or, alternatively, hydrogenation of dimer acids yields dimer diols, liquid C_(36) hydrocarbons with two primary OH-groups. The main fields of application of these novel oleochemical polyols are areas where hydrophobicity, hardness, flexibility, and mechanical and chemical resistivity are needed. Applications for oleochemical polyols in VOC-free, two-component polyurethane coatings and floorings, as well as in oven-drying or air-drying aqueous polyurethane dispersions are described.
机译：工业化国家和发展中国家都在努力使用和种植天然油作为食品和食品制造的可再生资源，这导致全球范围内的天然油生产高速增长。这些努力也导致了天然油作为工业应用的方便原料基础的发展。要将天然油用作聚氨酯生产的原料，需要多种羟基功能。羟己基官能团天然存在于蓖麻油中，并且可以通过环氧化和随后的开环合成引入具有不饱和位点的其他天然油中。可以通过与醇，氨基醇或酸反应来实现开环。羟基官能团也可以通过用过量的多元醇酯化或酯交换来获得。油醇的二聚，或二聚酸的氢化产生二聚二醇，具有两个伯OH基的液态C_（36）烃。这些新型油脂化学多元醇的主要应用领域是需要疏水性，硬度，柔韧性以及机械和化学电阻率的领域。描述了油化学多元醇在不含VOC的二组分聚氨酯涂料和地板中的应用，以及在烘箱干燥或风干的水性聚氨酯分散体中的应用。

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