Highly-refractive plastic lens and process for making the lens
Номер патента: CA1316315C
Опубликовано: 20-04-1993
Автор(ы): Katsuyoshi Sasagawa, Koju Okazaki, Nobuyuki Kajimoto, Teruyuki Nagata, Tohru Miura, Yoshinobu Kanemura
Принадлежит: Mitsui Toatsu Chemicals Inc
Опубликовано: 20-04-1993
Автор(ы): Katsuyoshi Sasagawa, Koju Okazaki, Nobuyuki Kajimoto, Teruyuki Nagata, Tohru Miura, Yoshinobu Kanemura
Принадлежит: Mitsui Toatsu Chemicals Inc
Реферат: Abstract of Disclosure: The present invention relates to a process for producing a plastic lens having a high refractive index and profile regularity comprising forming a mexture of one or more of sulfur-containing aromatic polyisocyanate compounds, one or more of active hydrogen compounds selected from the group consisting of polyol compounds and polythiol compounds, and at least one internal mold releasing agent, and subjecting the resulting mixture to casting polymerization, and a plastic lens obtained according to the process.
High-refractivity plastic lens resin
Номер патента: CA1328527C. Автор: Masao Imai,Katsuyoshi Sasagawa,Teruyuki Nagata,Yoshinobu Kanemura,Nobuyuki Kajimoto. Владелец: Mitsui Toatsu Chemicals Inc. Дата публикации: 1994-04-12.