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1. WO2020094772 - PHOTOCHROMIC ARTICLE

Publication Number WO/2020/094772
Publication Date 14.05.2020
International Application No. PCT/EP2019/080500
International Filing Date 07.11.2019
IPC
C08G 18/10 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
08Processes
10Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
B32B 27/40 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products essentially comprising synthetic resin
40comprising polyurethanes
C08G 18/22 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
08Processes
16Catalysts
22containing metal compounds
C08G 18/44 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
28characterised by the compounds used containing active hydrogen
40High-molecular-weight compounds
42Polycondensates having carboxylic or carbonic ester groups in the main chain
44Polycarbonates
C08G 18/80 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
70characterised by the isocyanates or isothiocyanates used
72Polyisocyanates or polyisothiocyanates
80Masked polyisocyanates
Applicants
  • TRANSITIONS OPTICAL, LTD. [IE]/[IE]
Inventors
  • TURPEN, Joseph D.
  • ZEZINKA, Elizabeth A.
  • AMOND, Emily
  • CHOPRA, Anu
  • HALEY, Michael Frank
  • KIM, Beon-Kyu
  • MONDAL, Sujit
  • PARISE, Nicholas J.
  • SHAUGHNESSY, Brian
  • WALTERS, Robert W.
  • XIAO, Wenjing
  • YEH, An-Hung
Agents
  • HEIROTH, Sebastian
Priority Data
62/757,45408.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PHOTOCHROMIC ARTICLE
(FR) ARTICLE PHOTOCHROMIQUE
Abstract
(EN)
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.
(FR)
La présente invention concerne un article photochromique qui comprend un substrat et une couche photochromique formée à partir d'une composition photochromique durcissable. La composition photochromique comprend un composant polyol qui comprend un polycarbonate diol, un composant isocyanate qui comprend un isocyanate polyfonctionnel non bloqué et/ou un isocyanate polyfonctionnel bloqué, et au moins un composé photochromique. Le rapport d'équivalents des équivalents isocyanate bloqués/non bloqués du composant isocyanate sur les équivalents hydroxyle du composant polyol est d'au moins 5/1. L'article photochromique présente une demi-vie T1/2 (demi-vie de décoloration) à 23 °C inférieure ou égale à 70 secondes.
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