Daikin Industries, Ltd.

Osaka University

Dai-ichi Kogyo Seiyaku Co., Ltd.

Atsuko Tanaka

Nobuhiko Tsuda

Taku Yamanaka

Makoto Ono

Takahiro Kitahara

Kenji Adachi

Taketo Kato

Yoshinori Nanba

Takahiro Taira

Takuji Ishikawa

Masayuki Hashimoto

Kazunobu Uchida

Tomoyuki Fukatani

Nahoko Izaki

Takahiro Sato

A nonionic surfactant composition including: a nonionic surfactant that contains a molecule having a C-Calkyl group and/or alkenyl group as a hydrophobic group, a polyoxyalkylene chain as a hydrophilic group, no aromatic ring, no C-Calkyl group derived from an alcohol that is produced from a higher olefin derived from a mixture of propylene and butene through an oxo process, and no Calkyl group derived from an alcohol that is produced from a higher olefin derived from a propylene tetramer through an oxo process. The nonionic surfactant has a hydrodynamic radius of 5.0 to 8.0 nm at 40&#xb0; C. in an aqueous solution in which a nonionic surfactant concentration is 0.1 kg/L in the nonionic surfactant composition, the radius being measured by a dynamic light scattering method.

Non-ionic surfactant composition and fluoropolymer aqueous dispersion

The present invention aims to provide a novel method for producing an aqueous dispersion containing non-melt-processable polytetrafluoroethylene particles. The present invention relates to a method for producing an aqueous dispersion containing non-melt-processable polytetrafluoroethylene particles, the method including polymerizing tetrafluoroethylene in an aqueous medium in the presence of perfluoro hexanoic acid or its salt.

Method for producing aqueous polytetrafluoroethylene dispersion

The present invention provides an organosol composition that is stable even in the case that the PTFE particle content is high. The present invention relates to an organosol composition of PTFE particles, comprising PTFE particles (A), a polymer (B), and an organic solvent (S), wherein (1) the polymer (B) is soluble in the organic solvent (S), (2) the amount of the PTFE particles (A) is not lower than 50% by mass of the total amount of the PTFE particles (A) and the polymer (B), and (3) the precipitation ratio of the PTFE particles after 48 hours is not higher than 60% when the total solids concentration of the PTFE particles (A) and the polymer (B) is 5% by mass.

Organosol composition of fluorine-containing polymer

Growing community of inventors

Settsu, Japan

Atsuko Tanaka