광변색성 물품

• Main Authors: TURPEN JOSEPH D, MONDAL SUJIT, AMOND EMILY, XIAO WENJING, SHAUGHNESSY BRIAN, KIM BEON KYU, WALTERS ROBERT W, HALEY MICHAEL FRANK, PARISE NICHOLAS J, YEH AN HUNG, ZEZINKA ELIZABETH A, CHOPRA ANU
• Format: Patent
• Language: Korean
• Published: 23.07.2021
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

본 발명은 기판, 및 경화성 광변색성 조성물로부터 형성되는 광변색성 층을 포함하는 광변색성 물품에 관한 것이다. 광변색성 조성물은 폴리카르보네이트 디올을 포함하는 폴리올 성분, 블로킹되지 않은 다작용성 이소시아네이트 및/또는 블로킹된 다작용성 이소시아네이트를 포함하는 이소시아네이트 성분, 및 적어도 하나의 광변색성 화합물을 포함한다. 이소시아네이트 성분의 블로킹된/블로킹되지 않은 이소시아네이트 당량 대 폴리올 성분의 히드록실 당량의 당량비는 5:1 이상이다. 광변색성 물품은 70초 이하의 23℃에서의 T1/2(페이드 반감기)를 나타낸다. The present invention relates to a photochromic article that includes a substrate and a photochromic layer formed from a curable photochromic composition. The photochromic composition includes a polyol component that includes a polycarbonate diol, an isocyanate component that includes an unblocked polyfunctional isocyanate and/or a blocked polyfunctional isocyanate, and at least one photochromic compound. The equivalents ratio of blocked/unblocked isocyanate equivalents of the isocyanate component to hydroxyl equivalents of the polyol component is at least 5:1. The photochromic article exhibits a T1/2 (Fade Half Life) at 23° C. of less than or equal to 70 seconds.