Invention Grant
- Patent Title: Multilayer polymeric reflector
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Application No.: US15031821Application Date: 2014-11-18
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Publication No.: US09739912B2Publication Date: 2017-08-22
- Inventor: Huiwen Tai
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Agent Philip Y. Dahl
- International Application: PCT/US2014/066220 WO 20141118
- International Announcement: WO2015/077249 WO 20150528
- Main IPC: G02B5/08
- IPC: G02B5/08 ; G02B5/30 ; G02B19/00 ; B32B27/08

Abstract:
A multilayer polymeric reflector is provided which comprises: a) a plurality of first optical layers, each first optical layer comprising a polyester having terephthalate comonomer units and ethylene glycol comonomer units, the polyester having a glass transition temperature, where each first optical layer is oriented, and b) a plurality of second optical layers disposed in a repeating sequence with the plurality of first optical layers, each second optical layer comprising a blend of polymethyl methacrylate (PMMA) and polyvinylidene fluoride (PVDF), where the blend has a glass transition temperature less than the glass transition temperature of the polyester comprising the first optical layers, and where the amount of PVDF in the PMMA/PVDF blend is greater than and not equal to about 40% and not more than about 65%. Articles comprising the multilayer polymeric reflector are also provided.
Public/Granted literature
- US20160245965A1 MULTILAYER POLYMERIC REFLECTOR Public/Granted day:2016-08-25
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