Invention Application
- Patent Title: RETROREFLECTIVE ARTICLES
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Application No.: US15308853Application Date: 2015-04-30
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Publication No.: US20170131444A1Publication Date: 2017-05-11
- Inventor: Ying XIA , Shri NIWAS , Michael A. MCCOY , Yongshang LU
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- International Application: PCT/US2015/028388 WO 20150430
- Main IPC: G02B5/128
- IPC: G02B5/128 ; B32B37/12 ; A41D13/01 ; G02B1/04 ; A41D27/08

Abstract:
Retroreflective articles include a layer of optical elements, and a bead bond layer (140). The optical elements include transparent microspheres (110), a transparent polymeric polyurethane layer (120), and at least one reflective layer (130), where the transparent polymeric polyurethane layer (120) comprises a dried layer prepared from an aqueous polyurethane dispersion. The retroreflective articles have improved wash durability.
Public/Granted literature
- US10545268B2 Retroreflective articles Public/Granted day:2020-01-28
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