US 11,988,808 B2
Functional laminate and functional lens comprising the functional laminate
Katsuhiro Mori, Shunan (JP); Toshimitsu Hiraren, Shunan (JP); and Junji Momoda, Shunan (JP)
Assigned to TOKUYAMA CORPORATION, Shunan (JP)
Appl. No. 16/971,349
Filed by TOKUYAMA CORPORATION, Shunan (JP)
PCT Filed Feb. 19, 2019, PCT No. PCT/JP2019/005951
§ 371(c)(1), (2) Date Aug. 20, 2020,
PCT Pub. No. WO2019/163728, PCT Pub. Date Aug. 29, 2019.
Claims priority of application No. 2018-030413 (JP), filed on Feb. 23, 2018; application No. 2018-087691 (JP), filed on Apr. 27, 2018; and application No. 2018-197121 (JP), filed on Oct. 19, 2018.
Prior Publication US 2020/0386915 A1, Dec. 10, 2020
Int. Cl. G02B 1/04 (2006.01); B32B 7/12 (2006.01); B32B 23/08 (2006.01); B32B 27/08 (2006.01); B32B 27/28 (2006.01); B32B 27/30 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B32B 27/40 (2006.01); G02C 7/02 (2006.01); G02C 7/10 (2006.01); G02C 7/12 (2006.01)
CPC G02B 1/041 (2013.01) [B32B 7/12 (2013.01); B32B 23/08 (2013.01); B32B 27/08 (2013.01); B32B 27/283 (2013.01); B32B 27/306 (2013.01); B32B 27/308 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); B32B 27/40 (2013.01); G02C 7/02 (2013.01); G02C 7/102 (2013.01); G02C 7/12 (2013.01); B32B 2250/03 (2013.01); B32B 2250/05 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2307/412 (2013.01); B32B 2307/42 (2013.01); B32B 2551/00 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A functional laminate (A) having a first optical sheet (Aa), a second optical sheet (Ab) and a functional layer (Ac) existent between these two sheets and having photochromic properties, wherein
the first optical sheet (Aa) and the second optical sheet (Ab) are both made of polyvinyl alcohol resin, a surface modified area having a reactive functional group selected from hydroxy group, thiol group, carboxy group, amino group, sulfo group, (thio)isocyanate group, allyl group, (meth)acrylic group, vinyl group, epoxy group, oxetane group, thioepoxy group and silanol group is existent on the outer surface of at least one of the first optical sheet (Aa) and the second optical sheet (Ab), the functional layer (Ac) is a photochromic adhesive layer (Ac1) comprising a photochromic compound and a polyurethane urea resin, and the first optical sheet (Aa) and the second optical sheet (Ab) are directly bonded together by the photochromic adhesive layer (Ac1).