公开(公告)号：EP3283553A1

公开(公告)日：2018-02-21

申请号：EP16780536.5

申请日：2016-04-12

申请人： 3M Innovative Properties Company

发明人： OUDERKIRK, Andrew J. ,  SHERMAN, Audrey A. ,  CRANDALL, Michael D. ,  SITTER, Brett J. ,  SONG, Zhipeng ,  LUNDQUIST, Jenna M. ,  ERDOGAN-HAUG, Belma ,  EVERAERTS, Albert I. ,  BROTT, Robert L.

IPC分类号： C08J3/12 ,  C08J5/18 ,  G02B5/02

CPC分类号： G02F1/19 ,  C08F212/08 ,  C08F257/02 ,  C08F285/00 ,  G02B3/0087 ,  G02B5/0242 ,  G02B5/0278 ,  C08F220/14

摘要： Particles having a first region and a second region surrounding the first region where the second region includes a copolymer extending across a thickness of the second region are described. The volume of the second region is at least 75 percent of the volume of the particle. The particles have a composition and a refractive index that each vary across the thickness of the second region.