The global coating industry produces tens of millions of metric tonnes of paints each year, and this quantity continues to grow. Most of these paints are obtained totally or partially from fossil resources, and many of them still use volatile organic compounds (VOCs) and/or other harmful chemicals. This paper describes the use of the cashew nutshell liquid (CNSL) as a raw material for synthesis of paint binders (sustainable materials). These binders are obtained in a single chemical step without tedious separation. These new bio-based materials (renewable resources) form stable films (green coatings) in a short drying time. The formulated paints are 100% aqueous, have low toxicity and ecotoxicity and require no additional drying agents or VOCs. Oxidative coupling of the alkylidene chain and addition of carboxylic acid to the carbon–carbon double bonds are implemented. The products obtained can be applied on different kinds of surfaces, such as glass slides, metal, wood or concrete, and exhibit good stability against various solvents and tropical conditions.

中文翻译：

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CNSL 氧乙酸衍生物，用于涂料制备的新型生物基粘合剂

全球涂料行业每年生产数千万吨油漆，并且这一数量还在持续增长。这些涂料大多数全部或部分来自化石资源，其中许多仍然使用挥发性有机化合物（VOC）和/或其他有害化学物质。本文介绍了使用腰果壳液（CNSL）作为合成涂料粘合剂（可持续材料）的原料。这些粘合剂通过单一化学步骤获得，无需繁琐的分离。这些新型生物基材料（可再生资源）在短时间内形成稳定的薄膜（绿色涂层）。配制的涂料为100%水性，具有低毒性和生态毒性，不需要额外的干燥剂或VOC。进行亚烷基链的氧化偶联以及将羧酸加成到碳-碳双键上。所得产品可应用于不同类型的表面，如载玻片、金属、木材或混凝土，并且对各种溶剂和热带条件表现出良好的稳定性。