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Title:
POLYESTER COMPOSITION FOR LED REFLECTIVE PLATES, LED REFLECTIVE PLATE, AND LIGHT EMITTING DEVICE EQUIPPED WITH SAID REFLECTIVE PLATE
Document Type and Number:
WIPO Patent Application WO/2017/086334
Kind Code:
A1
Abstract:
Provided is a polyester composition for LED reflective plates that includes a polyester (A), titanium oxide (B), a phenolic antioxidant (C), and a phosphorus-based antioxidant (D). The polyester (A) has a structural unit derived from a dicarboxylic acid that includes at least 50 mol% of terephthalic acid and a structural unit derived from a diol that includes at least 50 mol% of 1,4-cyclohexanedimethanol. The phosphorus-based antioxidant (D) includes at least three of the group represented by formula (1) in the molecule thereof. Relative to 100 parts by mass of the polyester (A), the content of the titanium oxide (B) is 20–90 parts by mass, and the content of the phenolic antioxidant (C) is 0.1–0.8 parts by mass. The content of the phosphorus-based antioxidant (D) satisfies formula (I). Also provided are an LED reflective plate comprising the composition and a light emitting device equipped with the reflective plate. Formula (I): 0.20 ≤ mass ratio [component (C) / component (D)] ≤ 5.00 .

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Inventors:
KANAI SHIMON (JP)
OYA NOBUHIRO (JP)
SHIGEMATSU TAKAHARU (JP)
Application Number:
PCT/JP2016/083927
Publication Date:
May 26, 2017
Filing Date:
November 16, 2016
Export Citation:
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Assignee:
KURARAY CO (JP)
International Classes:
H01L33/60; C08K3/22; C08K5/00; C08K5/13; C08K5/524; C08K5/5393; C08K7/14; C08L67/02
Domestic Patent References:
WO2015146988A12015-10-01
WO2011027562A12011-03-10
Foreign References:
JP2015093943A2015-05-18
JP2014148615A2014-08-21
JP2013060587A2013-04-04
JP2009507990A2009-02-26
Other References:
See also references of EP 3379587A4
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
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