在涤纶、丙纶、氨纶等合成纤维由单体聚合后的纺丝工程中，需要用到纺丝油剂（俗称化纤油剂），这些油剂可以调节纤维的摩擦特性，防止或消除静电积累，赋于纤维平滑、柔软等特性，提高纤维抱合力、保护纤维强力、减少断头率，使化纤顺利通过纺丝、拉伸、加弹纺纱、织造等工序。
In the spinning engineering of synthetic fibers such as polyester, polypropylene and polyurethane which are polymerized by monomers, spinning oils (commonly known as chemical fiber oils) are needed. These oils can adjust the friction characteristics of fibers, prevent or eliminate the accumulation of static electricity, give them smooth and soft properties, improve the cohesive force of fibers, protect the strength and decrease of fibers. With less end breakage, chemical fibers can pass through spinning, drawing, stretching, spinning and weaving processes smoothly.
虽然这些油剂在合成纤维前道纺丝过程中发挥了重大作用，但在后续的碱减量、染色、印花和后整理等工序中，却会造成减量不均匀或效果变差、染色不均匀或有色点色斑等问题，需要大量的化学药品来去除。这些除油助剂除了一些酸碱外，还需要大量表面活性剂进行辅助，俗称为除油剂，而涤纶除油剂在里面所占的比例最大
Although these oils play an important role in the front-end spinning process of synthetic fibers, in the following processes such as alkali reduction, dyeing, printing and finishing, they will cause uneven reduction or poor effect, uneven dyeing or stain spots, which require a large number of chemicals to remove. In addition to some acids and bases, these additives also need a large number of surfactants to assist, commonly known as degreasers, in which polyester degreasers account for the largest proportion.