Search:
Computing and Library Services - delivering an inspiring information environment

Grey Colouring Photochromic Fused Pyrans

Clarke , David A., Heron, B. Mark, Gabbutt, Christopher D., Hepworth, John D., Partington, Steven M. and Corns, Stephen N. (2000) Grey Colouring Photochromic Fused Pyrans. WO/2000/018755.

Metadata only available from this repository.

Abstract

A photochromic grey colouring 2$i(H)-naphtho[1,2-$i(b)]pyran of formula (I) wherein R?1¿ is selected from mono-, di- or poly-substituted aryl groups, mono-, di- or poly-substituted naphthyl groups and mono-, di- or poly-substituted heteroaryl groups, wherein at least one substituent is a nitrogen containing group, including amino, C¿1?-C¿20? and C¿6?-C¿20? alkylamino, C¿1?-C¿20? and C¿6?-C¿20? dialkylamino, C¿2?-C¿20? dialkenylamino, C¿2?-C¿20? or C¿4?-C¿20? di(polyalkenyl)amino, arylamino, diarylamino, C¿1?-C¿20? alkylarylamino, tetra (C¿1?-C¿10? linear or branched alkyl) guanidino and cyclic-amino groups and at least one of R?7¿ and R?9¿, which may be the same or different, is selected from C¿1?-C¿20? $i(N) alkylamino C¿1?-C¿20? $i(N)-alkylamido, C¿1?-C¿20? $i(N,N)-dialkylamido, amido, nitro, amino, C¿1?-C¿20? alkylamino, C¿1?-C¿20? dialkylamino, C¿2?-C¿20? dialkenylamino, C¿4?-C¿20? di(polyalkenyl)amino, arylamino, diarylamino, C¿1?-C¿20? alkylarylamino, or cyclicamino groups. The compounds may be combined with a polymeric host material such as plastic or glass to make a sunglass lens, an ophthalmic lens or a window. The compounds may also be included in an ink or a fuel.

Item Type: Patent
Subjects: Q Science > QD Chemistry
Schools: School of Applied Sciences
Related URLs:
Depositing User: Graham Stone
Date Deposited: 19 Oct 2012 14:49
Last Modified: 19 Oct 2012 14:52
URI: http://eprints.hud.ac.uk/id/eprint/15649

Item control for Repository Staff only:

View Item

University of Huddersfield, Queensgate, Huddersfield, HD1 3DH Copyright and Disclaimer All rights reserved ©