Light fatigue resistant photochromic formulations

Optical: systems and elements – Optical modulator – Having particular chemical composition or structure

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

252582, 252586, G02F 100, F21V 900

Patent

active

056991827

ABSTRACT:
The present invention provides for light fatigue resistant photochromic compositions including a unique combination of hindered aminoether light stabilizer ("HAELS") compounds to extend the usable lifetime of naphthopyran photochromic compositions and articles. Additionally, light stabilizer compounds and hydroxyphenyl benzotriazole UV absorbers have a synergistic effect in extending the usable lifetime of photochromic compositions and articles. Specifically, certain tertiary and secondary amine HALS compounds in combination with hydroxyphenyl benzotriazole UV absorbers extend the usable lifetime of spiro-indolino-oxazine photochromic compositions and articles. Similarly, aminoether HAELS compounds in combination with hydroxyphenyl benzotriazole UV absorbers further extend the usable lifetime of the naphthopyran photochromic compositions and articles.

REFERENCES:
patent: 3134674 (1964-05-01), Brown
patent: 3212898 (1965-10-01), Cerreta et al.
patent: 3239366 (1966-03-01), Miller et al.
patent: 3322542 (1967-05-01), Ullman et al.
patent: 3485764 (1969-12-01), Kazan
patent: 3488290 (1970-01-01), Gerhardt et al.
patent: 3508810 (1970-04-01), Baltzer
patent: 3519635 (1970-07-01), Meriwether et al.
patent: 3522143 (1970-07-01), Motter
patent: 3562172 (1971-02-01), Ono et al.
patent: 3565814 (1971-02-01), Pellon
patent: 3578602 (1971-05-01), Ono et al.
patent: 3625731 (1971-12-01), Taylor et al.
patent: 3635544 (1972-01-01), Stamm et al.
patent: 3660094 (1972-05-01), Poot
patent: 3666352 (1972-05-01), Wagner et al.
patent: 3671543 (1972-06-01), Koga et al.
patent: 3679351 (1972-07-01), Weissbein et al.
patent: 3707347 (1972-12-01), Mueller er al.
patent: 3794513 (1974-02-01), Krafft et al.
patent: 3843550 (1974-10-01), Hinnen
patent: 3950356 (1976-04-01), Hinnen
patent: 4012232 (1977-03-01), Uhlmann et al.
patent: 4025673 (1977-05-01), Reinnagel
patent: 4046586 (1977-09-01), Uhlmann et al.
patent: 4046737 (1977-09-01), Holt et al.
patent: 4049647 (1977-09-01), Holt et al.
patent: 4130760 (1978-12-01), Fanselow et al.
patent: 4166043 (1979-08-01), Uhlmann et al.
patent: 4171980 (1979-10-01), Ceintrey
patent: 4172725 (1979-10-01), Ceintrey
patent: 4215010 (1980-07-01), Hovey et al.
patent: 4237207 (1980-12-01), Ceintrey
patent: 4289497 (1981-09-01), Hovey
patent: 4342668 (1982-08-01), Hovey et al.
patent: 4360653 (1982-11-01), Stevens et al.
patent: 4440672 (1984-04-01), Chu
patent: 4485168 (1984-11-01), Arakawa et al.
patent: 4503177 (1985-03-01), Reid et al.
patent: 4630553 (1986-12-01), Landheer
patent: 4637698 (1987-01-01), Kwak et al.
patent: 4693962 (1987-09-01), Tamura et al.
patent: 4699473 (1987-10-01), Chu
patent: 4720356 (1988-01-01), Chu
patent: 4720547 (1988-01-01), Kwak et al.
patent: 4792224 (1988-12-01), Kwiatkowski et al.
patent: 4794068 (1988-12-01), Miyazaki et al.
patent: 4812171 (1989-03-01), Brettle et al.
patent: 4927180 (1990-05-01), Trundle et al.
patent: 4962013 (1990-10-01), Tateoka et al.
patent: 4992347 (1991-02-01), Hawkins et al.
patent: 4994208 (1991-02-01), McBain et al.
patent: 5017225 (1991-05-01), Nakanishi et al.
patent: 5017698 (1991-05-01), Machida et al.
patent: 5028047 (1991-07-01), Lee et al.
patent: 5130058 (1992-07-01), Tanaka et al.
patent: 5130353 (1992-07-01), Fischer et al.
patent: 5180524 (1993-01-01), Cailli et al.
patent: 5200116 (1993-04-01), Heller
patent: 5208132 (1993-05-01), Kamada et al.
patent: 5225113 (1993-07-01), Busetto et al.
patent: 5242624 (1993-09-01), Malatesta et al.
patent: 5260135 (1993-11-01), Corrigan et al.
patent: 5289547 (1994-02-01), Ligas et al.
patent: 5330686 (1994-07-01), Smith et al.
patent: 5385962 (1995-01-01), Corrigan et al.
patent: 5389219 (1995-02-01), Zwack et al.
patent: 5391327 (1995-02-01), Ligas et al.
Chu N., "Innovative Concepts for the Solar Building Program Evaluation of Photchromic Plastics," Final Report for Period Oct. 1987--Sep. 1988, Precision Products Business, American Optical Corporation, Oct. 1988.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Light fatigue resistant photochromic formulations does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light fatigue resistant photochromic formulations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light fatigue resistant photochromic formulations will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-212168

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.