Invention Grant
- Patent Title: Spectacle lens
- Patent Title (中): 眼镜镜片
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Application No.: US12448048Application Date: 2007-12-04
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Publication No.: US07863354B2Publication Date: 2011-01-04
- Inventor: Seiichi Tanabe , Moritoshi Matsumoto , Jiro Ariki
- Applicant: Seiichi Tanabe , Moritoshi Matsumoto , Jiro Ariki
- Applicant Address: JP Tokyo
- Assignee: Teijin Chemicals, Ltd.
- Current Assignee: Teijin Chemicals, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2006-329354 20061206
- International Application: PCT/JP2007/073741 WO 20071204
- International Announcement: WO2008/069336 WO 20080612
- Main IPC: C08K5/3475
- IPC: C08K5/3475 ; C08K5/36

Abstract:
A resin composition which contains polycarbonate resin, does not transmit a wavelength of 385 nm substantially and has a high total light transmittance and excellent heat resistance.The resin composition comprises (1) polycarbonate resin, (2) an ultraviolet absorber (A) such as 2-(2H-benzotriazol-2-yl)-p-cresol, (3) an ultraviolet absorber (B) such as 2,2′-methylenebis[4-(1,1,3,3-tetramethylbutyl)-6-(2H-benzotriazol-2-yl)phenol] and (4) at least one compound (C) represented by the following formula (I) or (II) and is used for spectacle lenses. (R1—S—CH2—CH2—C(O)O—CH2—)4C (I) (R2—O—C(O)—CH2—CH2—)2S (II) (wherein R1 is an alkyl group having 4 to 20 carbon atoms, and R2 is an alkyl group having 6 to 22 carbon atoms.)
Public/Granted literature
- US20100029812A1 SPECTACLE LENS Public/Granted day:2010-02-04
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