Patent ID: 11866851
Assignee: TAKEMOTO YUSHI KABUSHIKI KAISHA
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC D  C | IPC C  D

Claim 0:
1. An aqueous liquid of a carbon fiber precursor treatment agent comprising a carbon fiber precursor treatment agent and water, wherein
the carbon fiber precursor treatment agent contains an amino-modified silicone and a nonionic surfactant mixture having a molecular weight distribution (Mw/Mn) of 1.087 to 1.50,
the nonionic surfactant mixture includes two or more nonionic surfactants that are represented by the following Chemical Formula 1 and have different numbers of carbon atoms of R1 in Chemical Formula 1, wherein
R1 is a straight chain hydrocarbon group having 8 to 18 carbon atoms or a branched chain hydrocarbon group having 8 to 18 carbon atoms,
AO is an oxyalkylene group having 2 to 3 carbon atoms,
R2 is a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms, and
n is an integer of 1 to 60;
with the proviso that when the sum of the amounts of the amino-modified silicone, the nonionic surfactant mixture, and the water contained in the aqueous liquid is taken as 100 parts by mass, the aqueous liquid contains the amino-modified silicone at a ratio of 20 to 60 parts by mass and the nonionic surfactant mixture at a ratio of 1 to 10 parts by mass.