A
Anil Kumar
Researcher at PPG Industries
Publications - 70
Citations - 1349
Anil Kumar is an academic researcher from PPG Industries. The author has contributed to research in topics: Coating & Pyran. The author has an hindex of 20, co-authored 69 publications receiving 1337 citations.
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Patent
Photochromic substituted naphthopyran compounds
Barry Van Gemert,Anil Kumar +1 more
TL;DR: In this article, reversible photochromic naphthopyran compounds are described, examples of which are 3H-naphtho[2,1-b]pyrans having an acyl or aroyl oxy-bearing substituent at the number 6 carbon atom and certain substituents at the 3 position of the pyran ring.
Patent
Polarizing, photochromic devices and methods of making the same
TL;DR: In this article, the authors describe optical elements comprising an at least partial coating having a first state and a second state connected to at least a portion of a substrate and having an average absorption ratio greater than 2.3 in the activated state.
Patent
Polymerizable polyalkoxylated naphthopyrans
TL;DR: In this article, photochromic polymerizable polyalkoxylated naphthopyran compounds are described, examples of which are certain 2H-naphtho[1,2-b]pyrans, 3H-Naphthoe[2,1-b]-pyrants, and indeno[2.1-f]naphthsopyrans.
Patent
Indeno-fused photochromic naphthopyrans
TL;DR: In this article, photochromic indeno-fused naphthopyran compounds have been described, which have a rating of at least 80 in the Relative ΔOD at Saturation Test and may be represented by the following graphic formula:
Patent
Photochromic heterocyclic fused indenonaphthopyrans
TL;DR: In this article, photochromic heterocyclic fused indenonaphthopyran compounds have been described and represented by either the following graphic formulae: ##STR1## Also described are polymeric organic host materials that contain or are coated with such compounds.