发明授权
- 专利标题: Methods for incorporating ultraviolet light absorbing compounds into anodic oxides
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申请号: US14161482申请日: 2014-01-22
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公开(公告)号: US09725819B2公开(公告)日: 2017-08-08
- 发明人: Jude Mary Runge , Patrick S. Wieler , John Murray Thornton, III , Max A. Maloney
- 申请人: Apple Inc.
- 申请人地址: US CA Cupertino
- 专利权人: APPLE INC.
- 当前专利权人: APPLE INC.
- 当前专利权人地址: US CA Cupertino
- 代理机构: Downey Brand, LLP
- 主分类号: C25D11/02
- IPC分类号: C25D11/02 ; C25D11/24 ; C25D11/26 ; C25D11/30 ; C25D11/34
摘要:
The embodiments described herein relate to anodic oxides and methods for forming anodic oxides. The methods involve incorporating an ultraviolet (UV) light absorbing compounds into anodic oxides to prevent color fading of the anodic oxides caused by exposure to UV light. In some embodiments, the UV light absorbing compound includes para-aminobenzoic acid (PABA). The UV light absorbing compound can be incorporated within the anodic oxide during a sealing process. The UV light absorbing compound becomes infused within a seal layer, which is formed during the sealing process. The resultant anodic oxide has a UV light absorbing seal layer that can block UV light from reaching any underlying colorant existing within the anodic oxide.
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