Title:
ＬＥＤ信号用部材
Document Type and Number:
Japanese Patent JP5655657
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a member of an LED signal which comprises a polycarbonate resin composition of which the raw material is a dihydroxy compound of isosorbide or the like, in which the change in transparency and in color phase is few even used for a long period of time at an outdoor, and which is excellent in optical characteristics, long-term durability, and stability.SOLUTION: The member for an LED signal comprises molding a polycarbonate resin composition including a polycarbonate resin containing a structural unit originating in a dihydroxy compound having a region shown by general formula (1) in a portion of the structure. When the molding (thickness is 3 mm) formed from the polycarbonate resin composition is processed with the irradiation for 1,200 hours in which a sunshine carbon arc is used by the condition in accordance with JIS B7753, the variation amount of the haze before and after the irradiation treatment is at most 10, and the variation amount of the YI value is at most 10. However, the case where the region shown by the general formula (1) is the portion of -CH-O-H is excluded.
Inventors:
佐々木 一雄
Application Number:
JP2011062786A
Publication Date:
January 21, 2015
Filing Date:
March 22, 2011
Export Citation:
Assignee:
三菱化学株式会社
International Classes:
C08G64/02; C08K5/00; C08L69/00; F21S8/00; G02B5/02
Attorney, Agent or Firm:
Takeshi Shigeno
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