The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 07, 2021
Filed:
Mar. 26, 2018
Mitsubishi Engineering-plastics Corporation, Minato-ku, JP;
Keisuke Tomita, Hiratsuka, JP;
Akira Ohshima, Hiratsuka, JP;
Mitsubishi Engineering-Plastics Corporation, Minato-ku, JP;
Abstract
A polycarbonate resin composition for an optical component, the composition comprising 0.1 to 4 parts by mass of a polyalkylene glycol (B) and 0.005 to 0.5 parts by mass of a phosphorus-containing stabilizer (C) relative to 100 parts by mass of a polycarbonate resin (A), wherein the polyalkylene glycol (B) contains 40 to 80 mol % of a tetramethylene glycol unit (b1), 5 to 45 mol % of a (2-methyl)ethylene glycol unit (b2), and 5 to 50 mol % of an ethylene glycol unit (b3), and wherein at least two units selected from the tetramethylene glycol unit (b1), the (2-methyl)ethylene glycol unit (b2), and the ethylene glycol unit (b3) are contained as a copolymer component obtained by copolymerizing them.