Synthetic fiber treatment agent and uses thereof

Abstract

This invention relates to a treatment agent for synthetic fibers, which contains a smoothing component (A) and a surfactant (B), wherein the iodine value of the non-volatile component is 5 to 100, the strong acid value of the non-volatile component is 0.0 to 0.3 mg KOH / g, and the kinematic viscosity of the non-volatile component is greater than 60 mm² / s and less than 1000 mm² / s at 25°C. The present invention relates to a treatment agent for synthetic fibers, comprising a lubricating component (A) and a surfactant (B), where the treatment agent has a non-volatile content having an iodine value of 5 to 100, a strong acid value of 0.0 to 0.3 mgKOH / g, and a kinematic viscosity at 25℃ of more than 60 mm² / s and not more than 1000 mm² / s.