公开(公告)号：US20180251657A1

公开(公告)日：2018-09-06

申请号：US15757275

申请日：2016-09-01

Applicant: TOKUYAMA CORPORATION

Inventor： Hiromasa YAMAMOTO ,  Junji MOMODA ,  Shinobu IZUMI

IPC: C09D175/04 ,  G02B1/14 ,  C08B37/16

CPC classification number: C09D175/04 ,  C08B37/0015 ,  G02B1/14 ,  G02B5/23 ,  G02C7/102 ,  G02C2202/16

Abstract: To provide a primer composition for optical articles which comprises (A) a polyrotaxane and (B) a resin and/or precursor thereof. This primer composition for optical articles can suppress the production of a crack in a photochromic coat layer, form a laminate structure that the photochromic coat layer is hardly scratched, and provide a primer coat layer which exhibits excellent adhesion and photochromic properties on an optical substrate.

公开(公告)号：US20190382352A1

公开(公告)日：2019-12-19

申请号：US16322511

申请日：2017-07-26

Applicant: Tokuyama Corporation

Inventor： Fumiaki IWASAKI ,  Hiromasa YAMAMOTO ,  Kenji TANAKA ,  Masahiko SEKI ,  Yoshiki SEIKE

IPC: C07D233/34 ,  C07D487/04 ,  C07D491/048 ,  C07D495/04

Abstract: In the method, a trione compound represented by the following formula (1) is (i) reduced by NaAlH2(OCH2CH2OCH3)2 and subsequently further reduced by a metal borohydride salt, or (ii) reduced by calcium borohydride, thereby producing an amide alcohol compound represented by the following formula (3) (wherein, R1 and R2 may be the same or different and each represents a hydrogen atom or a protecting group of an ureylene group; R4 represents an alkyl group, an aralkyl group, or an aryl group; and each of R5, R6, and R7 represents a hydrogen atom, an alkyl group, an alkoxy group, or a halogen atom).