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Title:
PHOTOCHROMIC ARTICLES THAT INCLUDE PHOTOCHROMIC-DICHROIC MATERIALS
Document Type and Number:
WIPO Patent Application WO/2014/149852
Kind Code:
A3
Abstract:
The present invention relates to photochromic articles that include a substrate and at least one photochromic material that is adapted to change from an unactivated form to an activated form by exposure to radiation substantially in the wavelength range from 380 to 450 nanometers when measured over a range of from 380 to 700 nanometers. The photochromic article is also adapted to retain at least 12 percent of the delta OD measured in the Outdoor Test when tested in the Behind the Windshield Test. The photochrome material can be selected from certain compounds including, for example, fluoranthenoxazines, naphthopyrans, phenanthropyrans, fluoranthenopyrans, and indenonaphthopyrans, which each have bonded thereto at least one chiral or achiral lengthening group that provides the photochromic compound with dichroic properties. The present invention also relates to methods of forming a photochromic article.

Inventors:
DEMEIO, Rachel, L. (37 Annadale Drive, Gibsonia, PA, 15044, US)
KUMAR, Anil (2402 Oak Hurst Court, Murrysville, PA, 15668, US)
HE, Meng (3153 Barberry Court, Murrysville, PA, 15668, US)
DABIDEEN, Darrin, R. (2100 Jeremy Drive, Apartment 110Monroeville, PA, 15146, US)
MONDAL, Sujit (149 Lori Road, Gibsonia, PA, 15044, US)
Application Number:
US2014/021213
Publication Date:
December 31, 2014
Filing Date:
March 06, 2014
Export Citation:
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Assignee:
TRANSITIONS OPTICAL, INC. (9251 Belcher Road, Pinellas Park, FL, 33782, US)
International Classes:
C09K9/02; G02B5/23; G02C7/10; G03C1/73
Domestic Patent References:
WO2005005570A12005-01-20
WO2004085569A22004-10-07
WO1999016772A11999-04-08
WO2012082299A12012-06-21
WO2012082383A12012-06-21
Attorney, Agent or Firm:
FORTNEY, Lester, N. et al. (The Webb Law Firm, One Gateway Center420 Fort Duquesne Boulevard, Suite 120, Pittsburgh PA, 15222, US)
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