Asahi Kasei Kabushiki Kaisha

Asahi Kasel Chemicals Corporation

Koshi Okita

Hiroshi Yamada

Kei Tomeba

Shinji Funakoshi

A plastic optical fiber including a first cladding; a first core forming a first sea portion inside the first cladding; and a first island portion formed inside the first core with at least an outer periphery having a lower refractive index than the first sea portion, wherein the first core includes a polymethyl methacrylate-based resin.

Plastic optical fiber, plastic optical fiber cable, connector-attached plastic optical fiber cable, optical communication system, and plastic optical fiber sensor

Problem to be Solved To provide a photosensitive resin composition which has good processability even in a relatively low temperature condition near room temperature and exhibits good efficiency in removing debris generated while shaping a printing plate by laser engraving. Solution A photosensitive resin composition, characterized by comprising: (a) 100 parts by mass of a resin having a number average molecular weight of 1,000 or more; and (b) 0.1 to 10 parts by mass of ultrafine particles having a number average particle diameter of primary particles of 5 nm or more and 100 nm or less; wherein the photosensitive resin composition has a viscosity at 20&#xb0; C. of 50 Pa&#xb7;s or more and 10,000 Pa&#xb7;s or less; and a precursor composition, which is obtained by excluding the component (b) from the photosensitive resin composition, has a viscosity at 20&#xb0; C. of 5 Pa&#xb7;s or more and 500 Pa&#xb7;s or less.

Growing community of inventors

Tokyo, Japan

Koshi Okita