Patent ID: 11879205
Assignee: TAKEMOTO YUSHI KABUSHIKI KAISHA
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC D | IPC D

Claim 0:
1. A carbon fiber precursor treatment agent comprising
a lubricant, wherein the lubricant contains a modified silicone having a modified group that includes a nitrogen atom, a sulfur-containing diester compound represented by Formula I shown below:

R1—OOC—(CH2)a—S—(CH2)b—COO—R2  [1]

wherein a and b are each an integer from 1 to 10, and R1 and R2 are each a residue obtained by removing a hydroxy group from a saturated alcohol with 17 to 32 carbon atoms or a residue obtained by removing a hydroxy group from an alkylene oxide adduct of a saturated alcohol with 17 to 32 carbon atoms, and
a sulfur-containing monoester compound represented by Formula 2 Formula II shown below:

R1—OOC—(CH2)a—S—(CH2)b—COO—R2  [2]

wherein c and d are each an integer from 1 to 10, and R3 is a residue obtained by removing a hydroxy group from a saturated alcohol with 17 to 32 carbon atoms or a residue obtained by removing a hydroxy group from an alkylene oxide adduct of a saturated alcohol with 17 to 32 carbon atoms.