BR9714729A - Composto de naftopirano e artigo fotocrÈmico - Google Patents

Composto de naftopirano e artigo fotocrÈmico

Info

Publication number
BR9714729A
BR9714729A BR9714729-0A BR9714729A BR9714729A BR 9714729 A BR9714729 A BR 9714729A BR 9714729 A BR9714729 A BR 9714729A BR 9714729 A BR9714729 A BR 9714729A
Authority
BR
Brazil
Prior art keywords
compounds
naphthopyran
photochromic article
new
photochromic
Prior art date
Application number
BR9714729-0A
Other languages
English (en)
Inventor
Anil Kumar
David B Knowles
Barry Van Gemert
Original Assignee
Transitions Optical Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Transitions Optical Inc filed Critical Transitions Optical Inc
Priority to BR9714729-0A priority Critical patent/BR9714729A/pt
Priority claimed from PCT/US1997/009687 external-priority patent/WO1998055457A1/en
Publication of BR9714729A publication Critical patent/BR9714729A/pt

Links

Landscapes

  • Eyeglasses (AREA)
  • Optical Filters (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Abstract

"COMPOSTO DE NAFTOPIRANO E ARTIGO FOTOCRÈMICO".São descritos novos compostos de 2H-nafo[1,2-b]piranofotocrómicos reversíveis, exemplos dos quais são compostos tendocertos substituintes no átomo de carbono de número 5 da porçãonafto- do naftopirano e na posição 2 do anel de pirano. Certossubstituintes também poderão estar presentes nos átomos decarbono de números 6, 7, 8, 9 ou 10 da porção nafto- donaftopirano. Também são descritos materiais hospedeirosorgânicos que contenham ou sejam revestidos com taiscompostos. Artigos tais como lentes oftálmicas ou outrastransparências plásticas que incorporem os novos compostos denaftopirano ou combinações destes com compostos fotocrómicoscomplementares, p.e., compostos do tipo espiro(indolina), tambémsão descritos.
BR9714729-0A 1997-06-04 1997-06-04 Composto de naftopirano e artigo fotocrÈmico BR9714729A (pt)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR9714729-0A BR9714729A (pt) 1997-06-04 1997-06-04 Composto de naftopirano e artigo fotocrÈmico

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/US1997/009687 WO1998055457A1 (en) 1995-10-13 1997-06-04 Substituted naphthopyrans
BR9714729-0A BR9714729A (pt) 1997-06-04 1997-06-04 Composto de naftopirano e artigo fotocrÈmico

Publications (1)

Publication Number Publication Date
BR9714729A true BR9714729A (pt) 2001-12-18

Family

ID=25664963

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9714729-0A BR9714729A (pt) 1997-06-04 1997-06-04 Composto de naftopirano e artigo fotocrÈmico

Country Status (1)

Country Link
BR (1) BR9714729A (pt)

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 20/05/2008, OBSERVADAS AS CONDICOES LEGAIS.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time
B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)