Method of preparing photochromic articles

Details Method of preparing photochromic articles Method of preparing photochromic articles

1998-07-22

1999-11-09

Berman, Susan W.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 90, 524107, 524112, 252586, 351163, 351159, 359642, C08J 545, C08J 515, G02B 523, G02C 710

Patent

active

059816341

ABSTRACT:
A method of preparing photochromic materials useful for optical applications, and photochromic materials prepared by such method, are described. Such method comprises polymerizing a blend of a polyol[(meth)acryloyl terminated carbonate] monomer and a photochromic amount of an organic photochromic substance, thereby forming a photochromic material. A preferred polyol[(meth)acryloyl terminated carbonate] monomer is diethylene glycol bis[(methacryloyloxy)ethylene carbonate]. Polymerization may be performed by free radical initiation using thermal initiators, photoinitiators or a combination of such initiators. Photochromic materials prepared by such method may be used in optical applications, e.g., photochromic lenses.

REFERENCES:
patent: 3361706 (1968-01-01), Meriwether et al.
patent: 3562172 (1971-02-01), Ono et al.
patent: 3567605 (1971-03-01), Becker
patent: 3578602 (1971-05-01), Ono et al.
patent: 3716571 (1973-02-01), Berlin et al.
patent: 3785850 (1974-01-01), Parker
patent: 4166043 (1979-08-01), Uhlmann et al.
patent: 4215010 (1980-07-01), Hovey et al.
patent: 4342668 (1982-08-01), Hovey et al.
patent: 4367170 (1983-01-01), Uhlmass et al.
patent: 4637698 (1987-01-01), Kwak et al.
patent: 4816584 (1989-03-01), Kwak et al.
patent: 4818096 (1989-04-01), Heller et al.
patent: 4826977 (1989-05-01), Heller et al.
patent: 4880667 (1989-11-01), Welch
patent: 4931219 (1990-06-01), Kwiatkowski et al.
patent: 4931220 (1990-06-01), Haynes
patent: 5066818 (1991-11-01), Van Gemert et al.
patent: 5238931 (1993-08-01), Yoshikawa et al.
patent: 5274132 (1993-12-01), Van Gemert
patent: 5384077 (1995-01-01), Knowles
patent: 5405958 (1995-04-01), Van Gemert
patent: 5429774 (1995-07-01), Kumar
patent: 5466398 (1995-11-01), Van Gemert et al.
patent: 5479555 (1995-12-01), Rot et al.
patent: 5621017 (1997-04-01), Kobayakawa et al.
Techniques of Chemistry, Photochromism, vol. 3, "Photochromic Processes Involving Heterolytic Cleavage", R.C. Bertelson, Chap. 3, pp. 48-55, pp. 252-254, pp. 399, p. 842, Wylie-Interscience.

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